Answer:
Land plants are divided into two main groups. They are Mesophytes and Xerophytes
Explanation:
Xerophytes are types of plants that lives on dry habitat while Mesophytes are plants that lives on conditions that are optimal on dry land for growth.
Answer:
vascular; nonvascular
Explanation:
i just did it and got it right so yea
Student 1 said,
Magnetic force and electric charges are similar, because
opposites attract and likes repel.
Student 2 said,
Magnetism and electricity are similar because they both have
a force field extending out from them so they don’t have to
touch to work.
How would you respond to these students?
Student 1 -
Magnetic force and electric force are similar, because as in magnets the like (North and South) poles repel and unlike poles attract similarly in electricity the charges repel
Explanation
Magnets are dipole having a north pole and south pole respectively and when two magnetic objects are close to each other and in magnetic fields it is when the magnetic forces act upon each other where like poles attract and unlike poles repel. Now in case of electricity, we have a positive (+) charge and a negative charge(-) which attracts and repels similarly. Hence we can say that magnetic force and electric charges can be similar.Student 2 -
Magnetism and electricity are similar because magnetism exerts magnetic field extending out from it and electricity exerts electric field.
Explanation:
Now when we have to explain the forces acting with touching each other, we can give several examples for this one being the gravitational force. To consider the forces acting on each other without being in contact, we always imagine a field or an area around that object, and anything or any object coming close to this field would get pulled because of the field force or charge it exerts.The property of magnetism generally defined as a force of either attraction or repulsion acting at a distance. This is due to a magnetic field caused by moving electrically charged particles. It is also essentially in all magnetic objects. And for this, the magnetic objects in the field do not necessarily touch each other but the direction of poles which attract or repel from each other.In case of electricity, or you can term it is as an electric field it exerts an electrostatic force that pulls the object or a body coming close in that electrically charged field.Student 1 and Student 2 both make accurate statements about electricity and magnetism. They share similarities in attraction and repulsion, and both have force fields that extend from them. However, they differ in the concept of monopoles and the directions of the forces they exert.
Both electricity and magnetism share several fundamental similarities and differences:
Similarities :
Attraction and Repulsion: Just like electric charges, magnetic poles exhibit attraction between opposites and repulsion between like poles. This means that positive charges attract negative charges, and similarly, a North magnetic pole attracts a South magnetic pole.Field Concept: Both electric charges and magnetic poles have force fields extending out from them, which allows them to exert force without direct contact.Differences :
Monopoles: While electric charges can exist as single positive or negative charges (monopoles), magnetic fields always exist as dipoles with a North and a South pole. There are no isolated magnetic monopoles in known physics.Force Directions: The electric force on a charge in an electric field is parallel to the field lines, whereas the magnetic force on a moving charge is perpendicular to both its velocity and the magnetic field lines.In summary, Student 1 is correct in noting that both systems involve opposites attracting and likes repelling. Student 2 accurately points out that both electric and magnetic forces can act over a distance through their fields without direct contact.
What part of the brain connects the brain and the eyes?
O
A. Brain stem
O
B. Midbrain
O
c. Thalamus
O
D. Hypothalamus
Answer:
B. Midbrain
Explanation:
The midbrain is the uppermost region of the brainstem, which serves as the primary connection between the central nervous system. The midbrain is made up of three major components: the colliculus, tegmentus, and cerebral peduncles. The midbrain, commonly known as the roof and the tegmentum, is a growing human brain structure that includes the roof and the tegmentum. The midbrain is necessary for muscle movement, particularly eye movement, as well as multisensory processing.
The thalamus connects the brain and the eyes, acting as the primary relay station for visual information from the retina. Though the optic nerve and midbrain are involved in visual processing, the thalamus is the correct answer among the options provided.
The Connection Between the Brain and the Eyes
The part of the brain that connects the brain and the eyes is the optic tract, which is an extension of the optic nerves after they cross at the optic chiasm. The optic tracts continue to the thalamus, which is part of the diencephalon, along with other connections to the hypothalamus and the midbrain. However, when considering the choices provided in the question (Brain stem, Midbrain, Thalamus, Hypothalamus), the thalamus is the most accurate answer as it is the primary relay station for visual information coming from the retina before it proceeds to the visual cortex of the cerebrum.
It's important to note that while the optic nerve and tract are directly involved in the pathway from the eyes to the brain, the brain stem, which include the midbrain, plays a role in coordinating sensory representations including those for visual information. Yet, for the connection between the brain and eyes specifically, the thalamus is where the optic tracts relay visual signals.
How is a solid substance affected by adding heat energy to it?
O A) Its mass increases.
OB) Its temperature decreases.
OC) The motion of its particles increases.
OD) The motion of its particles decreases.
Answer:
D) the motion of its particles increases
Explanation:
When heat is added to a solid substance, the particles in the solid gains kinetic energy and the motion of the particles increases.
Answer: The motion of its particles increases.
Explanation: When heat energy is applied to a solid substances its particles acquire kinetic energy. As the kinetic energy of the particles increases, the bonds between the particles begin to break, and the particles engages in a random motion. As the heat energy increases, their kinetic energy increases and consequently their is an increase in the motion of the particles.
33. How is the speed of light affected as light passes at an angle from air to water?
It remains constant.
It speeds up.
It passes through unchanged.
It slows down.
Answer: I believe the answer is "It slows down."
a scientist wants to study maing behaviour in crickets
A scientist wants to study mating behaviors in crickets. She hypothesizes that males that win the most male vs male contests mate with the most female. She observes the crickets to obtain data. For each male, she counts the number of male-male fights he wins and the number of females he mates with. What is the independent variable?
Answer:The number of fights is the independent variable.
Explanation:Independent variable in an event is defined as the event that's occurring and its number is fixed from the beginning. Also all the other dependent variable or dependent events are completely dependent on these independent events and their number varies with the change of independent variable.
Here in this event, the independent variable is the number of fights. The number of fights is actually the number of males - 1 and this number of males in a community is fixed. Till the end, the males will fight and the final winner will have the chance to mate with the most number of females. So the number of fights in the community is the independent variable here.
Final answer:
The independent variable in the cricket mating behavior study is the number of fights won by male crickets, while the dependent variable is the number of females they mate with. Replication is achieved by including a large enough sample of crickets.
Explanation:
In the study of mating behavior in crickets, the independent variable is the number of male-male fights a male cricket wins. The dependent variable is the number of females the male cricket mates with. Replication in this experiment constitutes having a sufficient number of male crickets to ensure that the results are not due to chance but rather are representative of the entire population of crickets being studied.
biology help needed! Thanks!!
Answer:
Explanation:
2)The correct answer is speciation.
3)The correct answer is Temporal isolation.
4)The correct answer is Natural selection.
5)The correct answer is' B' that is Physical separation of populations prevents interbreeding and mixing of gene pools.
6)The correct answer is natural selection.
What is a basic unit a sugar molecule
Answer: The basic unit of a sugar molecule is carbon.
Explanation:
Carbon forms the skeleton of all sugar molecules. It is the basic unit of every sugar molecule which has the ability to form covalent bonds with other elements like hydrogen and oxygen to form sugar molecules. For instance, in a simple sugar such as glucose having a formula of C6H12O6, carbon combines with hydrogen and oxygen in the ratio of 1:2:1.
HELP!!!
Check out the map showing tornado alley in the U.S. During the winter of 2017, massive tornadoes occurred in the states of Alabama and Georgia, two states that ARE NOT in tornado alley. If the conditions for a tornado are predictable, how could these tornadoes have formed in these two states?
A) Warm, moist Pacific coast air meets cold, Atlantic coast air.
B) Arctic, Canadian air meets west moving air from the cold Atlantic coast.
C) Warm, moist Gulf coast air meets cold, dry continental air moving down from Canada.
D) A northeastern air mass drops down into the southern states bringing precipitation.
Answer:
the answer is C.
Please vote brainliest. Thank you.
Explanation:
Warm, moist Gulf coast air meets cold, dry continental air moving down from Canada. The correct option is C.
What is tornado alley?The central United States' loosely defined "Tornado Alley" is where tornadoes most frequently occur.
A research project on severe weather in Texas, Louisiana, Oklahoma, Kansas, South Dakota, Iowa, and Nebraska was the first to use the word in 1952.
The name "Tornado Alley" refers to a part of the United States where tornadoes are frequent. Usually starting in the Southern Plains, Tornado Alley runs through the upper Midwest and ends at the Canadian border.
Tornado Alley is frequently connected with the states of Texas, Kansas, and Nebraska.
As cold, dry continental air travelling south from Canada collides with warm, moist Gulf coast air, tornadoes have formed in these two states.
Thus, the correct option is C.
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Your question seems incomplete, the missing image is:
what is an example of Newton’s 2nd or 3rd Law in daily life.
I think this is more of Physics, not Biology:
2nd law:
Well, have you ever sat in a car, and when the car accelerates fast enough, you get pushed to the back of your seat, and the back of your seat kind of "pushes" you forward? The back of our seat operates force on our back which is proportional to the acceleration and our weight (mass).
The second law basically defines “force” in terms of “mass” and “acceleration”. So any situation in which an object changes its velocity involves that law.
3rd law:
For every action, there is an equal and opposite reaction. Let's consider the example of the apple falling on Newton's head. Gravity applies a downard force on the apple. While the apple applies an equal and opposite force upwards to keep the apple "suspended". But when the force becomes too weak to match gravity, it falls downward.
A man with type A blood marries a women with type B. Their offspring all have type AB blood. the pattern of inheritance is called
When the blades of a fan move, they have mechanical energy.
This mechanical energy comes from
A.
electrical energy flowing into the fan from the wall outlet.
B.
sound energy flowing into the fan from a radio.
C.
heat energy flowing into the fan from the air.
D.
light energy flowing into the fan through the window.
Answer:
A) Electrical energy flowing into the fan from the wall outlet
Explanation:
The peripheral nervous system is involved in _____.
involuntary, but not voluntary, actions
both voluntary and involuntary actions
voluntary, but not involuntary, actions
The peripheral nervous system is involved in both voluntary and involuntary actions.
Explanation:
The peripheral nervous system (PNS) is the neural system that resides outside the central nervous system (CNS). This contains nerves which in turn connect with the organs of the body like the sensory organs, glands, blood vessels, muscles etc with the central nervous system (CNS).
The PNS is divided into somatic and autonomic nervous systems.
The somatic nervous system contains sensory and motor nerve fibers which send sensory information and controls motor functions respectively. The voluntary movements of skin, skeletal muscles, bones, and joints are controlled by somatic PNS.
The autonomic nervous system composed of sympathetic, parasympathetic and enteric nervous systems controls the involuntary actions of smooth muscles of the internal visceral organs.
a branch of study or knowledge
about the physical and material world
which is conducted through investigation
and observation
Answer:
Science.
Explanation:
Can also refers to a practical, intellectual activity that involves the study of natural and physical worlds by shedding light into their structure and also behavior in a systematic way.
The sun's motion across the sky is caused by _____.
Answer:
by the rotation of the Earth on its axis
Explanation:
Answer:
The movement of the sun is causes by the rotation of the earth. This is also why the moon goes across the sky. Also, the earth doesn't go in an exact circle around the sun; instead, it is closer to the sun in the hotter months and farther in the cooler months. Hope this helps with the answer.
Pretend human eye color is determined by a single gene, with brown eyes (B) being dominant over blue (b). A brown-eyed man marries a blue-eyed woman, and they have three children. Two of the children are brown-eyed, and one is blue-eyed. What is the probability the brown-eyed children have the genotype BB?
The probability of the brown-eyed children having the genotype BB is 0% as their father must be heterozygous (Bb) in order to have a blue-eyed child with a blue-eyed woman. The existence of a blue-eyed child confirms that both parents cannot have a homozygous dominant BB genotype.
Explanation:The question revolves around the genetics of eye color, specifically the probability of the brown-eyed children inheriting a certain genotype (BB)
Given that we know the blue-eyed woman must have a genotype of bb (as blue eye color is recessive), and one of their children also has blue eyes, we can conclude that the brown-eyed man must have a genotype of Bb in order to produce a blue-eyed child. This is because two heterozygous Bb parents have a 25% chance of producing a bb (blue-eyed) offspring.
Therefore, with each Bb parent (the brown-eyed man and the blue-eyed woman), we use a Punnett square to predict offspring genotypes. The possible genotypes for their children would be 25% BB, 50% Bb, and 25% bb. However, since one child is blue-eyed (bb), we know the man's genotype cannot be BB. So the possible genotypes for the two brown-eyed children are either BB or Bb. But since BB is not possible, as at least one parent is Bb, the probability of the brown-eyed children having the genotype BB is 0%.
endocytosis brings large particles
Explanation:
During endocytosis large cells, particles, and cell fragments moved across the plasma membrane through a process of invagination; part of the external cell membrane folds into itself and creates a small pocket that surrounds the target molecule, this breaks off from the membrane to form an intracellular vesicle.
Specific endocytosis processes, such as phagocytosis, pinocytosis, and endocytosis are regulated by receptors-they take in cells, fluids, and specific compounds respectively. During phagocytosis, cells absorb large particles in cell compartments called phagosomes, after which specifically enzyme-containing lysosomes break them down.
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The lack of upwelling during an El Nino period results in which of the following
Answer:
Fish migration to other parts of the ocean results when there is a lack of upwelling during an El Nino period.
Explanation:
During an El Nino period, the trade winds blow towards the east and keep eastern Pacific Ocean warmer.
Ocean upwelling due to trade wind brings nutrient-rich cool and dense water to the ocean’s surface. Upwelling makes the surface ocean water fertile for a healthy marine life.
El Nino not only affects the ocean’s surface water temperature but also the strength and speed of the ocean currents, all of which affects marine life.
During El Nino Southern Oscillation when there is a warm phase, the trade wind becomes weak and warm water is pushed into the eastern Pacific Ocean.
Due to weaker trade winds, upwelling of ocean waters is reduced and the nutrient-rich waters remain in the deep and far from the coastal areas.
This makes the fishes like anchovies to migrate from the surface waters to deep and far ocean areas in search of nutrients.
Daren has sickle-cell disease. Because of the disease, some of Daren's blood cells are long and thin instead of being disk-shaped. Daren's father also suffers from sickle-cell disease, but his mother and two sisters do not. This is an example how A. a person can choose which genes he or she will inherit. B. cells can be influenced by genetic factors. C. cells always repair damaged genes immediately. D. a person cannot survive if even one cell becomes damaged.
Answer: B cells can be influenced by genetic factors
Explanation: Daren has sickle cell disease. Sickle cell disorder is a kind of disease that affects the hemoglobin in the red blood cells. Hemoglobin, is a molecule in red blood cells that delivers oxygen to cells throughout the body. People with Sickle cell disorder have hemoglobin molecules called hemoglobin S, which distort the shape of the red blood cells. A normal red blood cell has a disc shape but people with sickle cell like Daren have their red blood cells and distorted into a sickle, or crescent, shape
Histone methyltransferases are a class of enzymes that methylate certain amino acid sequences in histone proteins. A research team found that transcription of gene R decreases when histone methyltransferase activity is inhibited. Which scientific claim is most consistent with these findings?
The histone methyltransferases enzymes prevents the access of transcription factors of R gene there by decreasing the activity of R gene.
Explanation:
Histone methyltransferase enzymes perform methylation or demethylation of a DNA sequence of a gene.
These enzymes can get the gene on or off by performing methylation or demethlylation of DNA sequence or gene.
They surround the gene to be transcripted by polyadenylation tail, this prevents the access of transcription factors to the gene, thereby preventing the transcription process and consequently no protein formed.
This way transcription of R gene decreases.
By methylating the DNA sequence it modifies the gene and inhibits transcription thereby decreasing or no enzymatic activity.
Transcription is the process by which RNA is produced from the DNA. Option D is correct. Histone methylation opens up chromatin at gene R so transcription factors can bind to DNA more easily.
Histone Methylation:
It is the process by which histone is methylated by the action of histone methyl transferase.
The transcription of the R gene is decreased when methyl transferase activity is inhibited. This means the nucleosome structure is not opened up yet. Hence, RNA polymerase is unable to bind with DNA.
Therefore, Histone methylation opens up chromatin at gene R so transcription factors can bind to DNA more easily.
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What energy takes place within cells?
Answer:
cellular respiration
Explanation:
Answer:
Metabolism i believe
Explanation:
can germs live in cold weather
Answer:
Research suggests that these viruses may survive and reproduce more effectively at colder temperatures, making it easier for them to spread and infect more people. Cold weather may also reduce the immune response and make it harder for the body to fight off germs.
Explanation:
Hope this helps.
Answer:
Yes and cold weather can lower you ability to fight them off. Trust the guy on the top. Trust me and him.
Explanation:
organism interaction and relationship webquest
In biology, organism interaction and relationships refer to the ways in which different species interact with each other and their environment. This can include predator-prey relationships, symbiosis, competition, and more. Studying these interactions helps us understand the complex properties of organisms and how they interact with their environment.
Explanation:In biology, organism interaction and relationships refer to the ways in which different species interact with each other and their environment. These interactions can include predator-prey relationships, symbiosis, competition, and more. One example of organism interaction is a food web, which shows the feeding relationships between different organisms in an ecosystem.
For instance, a food web can show how plants are consumed by herbivores, which are then consumed by carnivores. Another example of organism interaction is the evolutionary relationships among species, which can be explored through interactive exercises and phylogenetic analysis.
Overall, studying organism interaction and relationships helps us understand the complex properties of organisms and how they interact with their environment.
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Match each vocabulary word to the correct definition.
Following are the definitions matched with the words given
Explanation:
Social behavior
having a complex social structure marked by role specializations.
Hydrodynamic :
related to movement of fluids or related to objects moving in fluids.
Forage :
to forage is to search for and collect food.
Migrate :
to move from one location to another seasonally.
Eusocial :
the interaction between two or more members of the same species. These interactions are highly ritualized and follow the same pattern every time.
Answer:
Social behavior: the interactions between two or more members of the same species
hydrodynamic: relating to the movement of a fluid or object's through a fluid
Forage: to search for and collect food
Migrate: to move from one location to another seasonally
Eusocial: having a complex social structure characterized by role specialization
Explanation:
Which type of thermal energy transfer causes clouds to form?
Question 2 options:
convection
conduction
radiation
freezing
Answer:
Convection
Explanation:
Answer:
Option A, Convection
Explanation:
In convection, heat is transferred by physical movement of either liquid or gas from one region to other. This movement is governed by difference between the temperatures of two regions.
When water gets heated, it converts into water vapor and starts moving towards the sky.
As it reaches a certain altitude the water vapor condenses to form tiny water droplets that constitutes the clouds
Hence, option A is correct
prompt: sexual reproduction requires that half of the chromosomes in a zygote come from one parent and the other half from the second parent
question: describe the process by which a germ cell’s complement of chromosomes is halved in the formation of gametes
Answer:
Meiosis
Explanation:
Meiosis takes place when a(n) reproductive cell (e.g egg, sperm) is created to help form a zygote
The germ cell's chromosome complement is halved through meiosis, a type of cell division that produces four genetically unique haploid gametes. This ensures the proper chromosome number in the zygote upon fertilization.
The process by which a germ cell's complement of chromosomes is halved in the formation of gametes is known as meiosis. Meiosis is a type of cell division that reduces the chromosome number by half, creating four haploid cells, each genetically distinct from the parent cell that gave rise to them. This reduction is critical for sexual reproduction because it ensures that when two gametes unite at fertilization, the resulting zygote has the correct number of chromosomes.
Meiosis occurs in two main phases: Meiosis I and Meiosis II. During Meiosis I, homologous chromosomes (one from each parent) pair up and exchange genetic material through a process called crossing over, then the cell divides. This results in two cells, each with a mixed set of chromosomes but still with the diploid number. Meiosis II follows without DNA replication, and separates the sister chromatids, leading to four haploid gametes. These gametes are ready to participate in fertilization, contributing to the genetic diversity of offspring.
Drag each item to the correct location in order to place the events in the development of plants into the correct order
Explanation:
The events in the development of plants is as follows:
1. Cyanobacteria begin to photosynthesize.
Cyanobacteria which are commonly called as Blue green algae are Prokaryotes.
They are aquatic and photosynthetic, it means, they live in the water, and can manufacture their own food.
2. Cyanobacteria become the chloroplast of plants.
Cyanobacteria have the endosymbiotic plastid. Eukaryotes or plants considered to have evolved from endosymbiotic cyanobacteria.
3. Bryophytes become the first land plants.
Bryophytes are the first land plants to be evolved from aquatic plants, specifically green algae.
4. Plants evolve to have vascular tissue to transport water.
During the evolution of plants from Bryophytes to Pteridophytes, Pteridophytic plants have vascular tissue i.e. xylem and phloem. Xylem helps in transport of water to various parts of the plants.
The events in the development of plants into the correct order is Cyanobacteria begin to photosynthesize -> Cyanobacteria become the chloroplasts of plants -> Bryophytes become the first land plants -> Plants evolve to have vascular tissue to transport water.
Cyanobacteria are photosynthetic bacteria that are thought to be the ancestors of plant chloroplasts.
Chloroplasts are the organelles in plant cells that are responsible for photosynthesis.
Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into oxygen and glucose.
Bryophytes are a group of nonvascular plants that are the first plants to colonize land.
Nonvascular plants do not have vascular tissue, which is specialized tissue that transports water and nutrients throughout the plant.
Vascular tissue evolved in plants to help them transport water and nutrients more efficiently.
This allowed plants to grow larger and taller than nonvascular plants.
Therefore, the correct order of the events in the development of plants is as follows:
Cyanobacteria begin to photosynthesize.
Cyanobacteria become the chloroplasts of plants.
Bryophytes become the first land plants.
Plants evolve to have vascular tissue to transport water.
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The blue shiner is an endangered fish in Georgia. It lives in the Coosawattee River. A dam is built on the river to create a reservoir. The water below the dam decreases.
What would MOST LIKELY happen to the blue shiner numbers after the dam is built on the river?
A) They would decrease because of new predator fish.
B) They would increase because they will have more space to lay eggs.
C) They would decrease because the dam would change the environment.
D) They would increase because there would be more nutrients in the water.
Answer:
D
Explanation:
Answer:
c
Explanation:
How much more [H+] does lemon juice (pH 2) have compared with pure water (pH 7)? Remember that each pH unit represents a 10 fold change in the [H+].
Answer:
[tex]10^5 \\or\\100,000[/tex]
Explanation:
As we know that the formula for pH is
[tex]pH = -[log H+]\\[/tex]
It is also given in the question that one pH unit represents the 10 fold change in the concentration of hydrogen ion.
Now for lemon juice whose pH is 2, hydrogen ion concentration is equal to
[tex]10^-2\\= \frac{1}{100}[/tex]
And for pure water whose pH is [tex]7[/tex], hydrogen ion concentration is equal to
[tex]10^ -7\\= \frac{1}{10000000}[/tex]
Thus, the H+ ion concentration in lemon juice is [tex]10^5[/tex] times greater than the pure water.
The difference in [H+] between lemon juice and pure water is 100,000 times.
Explanation:The difference in pH between lemon juice (pH 2) and pure water (pH 7) is 5. Since each pH unit represents a 10-fold change in [H+], we can calculate the difference in [H+] using the formula:
[H+] difference = 10pH1 - pH2
Substituting the values, we get [H+] difference = 107 - 2 = 105 = 100,000 times more [H+] in lemon juice compared to pure water.
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vel rise
7. A person with diabetes cannot regulate their blood sugar,
es cannot regulate their blood sugar mainly because the pancreas does not release
enough insulin. To treat the disease, a person must monitor their blood suga
must take an injection of insulin. How do you think they would need to treat low
ust monitor their blood sugar, if their blood sugar is high, they
hink they would need to treat low blood sugar?
Answer:
Blood sugar regulation in a diabetic patient is done by Injecting prescribed quantity of hormone insulin after definite time intervals.Consuming prescribed amount of sugars.Injecting glucagon to maintain blood sugar level if alpha cells of the pancreas are also non-functional.Explanation:
The concentration of sugar in the blood is regulated by the hormone, insulin, produced in the pancreatic beta cells in normal person and injected from outside in a diabetic person.When the concentration of glucose in the blood is high, the insulin signals the hepatocytes to express their glucose transporters to take up the excess glucose from blood and convert them to glycogen.When concentration of sugar in the blood is low, another hormone called glucagon, released from the alpha cells of the pancreas, signals the liver to carry out glycogenolysis (breakdown of glycogen to glucose) and release the glucose into the blood. This would maintain the glucose level in the blood.In a diabetic patient, usually the beta cells of the pancreas are affected but not the alpha cells, so the glycogenolysis can occur in the body spontaneously.But excess injection of insulin should also be avoided as that can cause the blood sugar level to come down below normal.Who did Charles Darwin study with
Charles Darwin has studied with many people, but his most important studies were with Alfred Russel Wallace.