Answer:
The correct option is B) Flies were not found in the sealed jars of rotting meat.
Explanation:
Redi discarded the phenomenon or hypothesis for spontaneous generation through his experiments. The hypothesis of spontaneous generation supported that live could originate from non-living things.
Through his experiments, he proved that only flies could give rise to other flies. He did experiments by keeping meat pieces in a sealed and in an open jar. The absences of the flies in the sealed jar proved that meat could not give rise to flies and only flies gave rise to other flies.
Final answer:
The correct option is B. Flies were not found in the sealed jars of rotting meat. Redi's experiment demonstrated that maggots only developed in rotting meat when flies had access to it, not in sealed jars, hence disproving spontaneous generation.
Explanation:
Francesco Redi conducted an experiment that is considered one of the first to challenge the theory of spontaneous generation—the belief that living organisms could arise from nonliving matter. In his experiment, he used jars with rotting meat to demonstrate his hypothesis that maggots only arose when flies had contact with the meat. Redi's findings showed that flies were not found in the sealed jars of rotting meat, supporting the idea that maggots were the offspring of flies and not a product of spontaneous generation. As a result, option B is the correct answer.
pls pls pls help!! i will make brainliest!!
1. RNA
2. Nucleic acid.
3. Units.
4. DNA.
5. Protein.
6. Transcription
7. Molecules
8. Units
9. Amino acids.
10. Translation.
Explanation:Protein synthesis and the RNA synthesis is the total process that takes place together in each and every cell which is the Central Dogma theory.
In this theory, the RNAs are produced from the DNA by means of the process of transcription. In this process, the enzyme DNA dependent RNA polymerase acts as the primary DNA.
In the second step, the RNA produces the protein by the process of translation. This process involves the participation of each and every types of RNA like the rRNA, tRNA, and mRNA. These RNAs are all involved to form proteins by accumulation of amino acids and polymerizing them to form proteins.
What energy takes place within cells?
Answer:
cellular respiration
Explanation:
Answer:
Metabolism i believe
Explanation:
NEED HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!
A tropical storm is an example of what two spheres of the earth interacting?
atmosphere and hydrosphere
geosphere and cryosphere
biosphere and atmosphere
cryosphere and atmosphere
Answer:
atmosphere and hydrosphere.
Explanation:
Answer:
atmosphere and hydrosphere i hope this helps
Explanation:
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:
Nitrogen atoms are part of the structure of some organic molecules, such as all amino acids and some modified carbohydrates. What other organic molecules contain nitrogen?
Explanation:
The nucleic acids are comprised of smaller units called nucleotides and function as storage for the body’s genetic information. These monomers include ribonucleic acid (RNA) or deoxyribonucleic acid (DNA). They differ from other macromolecules since they don’t provide the body with energy. They exist solely to encode and protein synthesis.
Basic makeup: C, H, O, P; they contain phosphate group 5 carbon sugar does nitrogen bases which may contain single to double bond ring.
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Answer:
nucleotides
Explanation:
Have a good day :)
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.
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
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.
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:
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."
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:
This term means: To expose a subject to an infectious agent (such as a virus). It is often
done to prevent the subject from getting a disease, in which case it is synonymous with the
term 'vaccinate'.
Answer:
Immunization
Explanation:
Immunization can be described as a process in which an organism is exposed to an infectious agent or its antigens. The infectious agent might be completely or partially killed do that in might not cause disease in the host cell. However, the host cell will produce antibodies against the pathogen and remember the pathogen. Next time if that pathogen infects the host cell, it will be recognized quickly and a response will be generated.
Answer:
Inoculate
Explanation:
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the incomplete metamorphosis consists of three stages: egg, nymph, and adult.
1. egg
2. nymph
3. adult
the answer is egg
Answer: Egg
Explanation: There are basically two types of metamorphosis: complete and incomplete metamorphosis. In complete metamorphosis, the insect passes through the egg, larva and pupa stages before emerging as an adult. In incomplete metamorphosis, the egg hatches into a nymph, and the emerges into adult without passing through the pupa stage.
Stages of complete metamorphosis are egg, larva, pupa and adult. Stages of incomplete metamorphosis are egg, nymph and adult
what prevents blood movement from left ventricle to left atrium
The Mitral valve which is also known as left atrioventricular prevents blood movement from left ventricle to left atrium.
Explanation:
Human heart is four chambered.Two of these are receiving chambers known as atria and the other two are distributing chamber known as Ventricles.Atria are superior chambers and ventricles are inferior chambers.The heart has four valves broadly grouped as Atrioventricular valves and Semi lunar valves. Atrioventricular valves allows flow of blood from atria to ventricle. These are tricuspid valve and bicuspid valve.Semi-lunar valves allow blood to pass out of the heart. These include the pulmonary and aortic valves.The pulmonary valve allows blood to flow from right ventricle to the heart while aortic valve allows blood to flow from left ventricle to the Aorta.The Tricuspid valve located between the right atrium and right ventricle allows blood to flow from right atrium to the right ventricle. The Bicuspid valve ( Mitral valve) located between the left atrium and left ventricle allows the blood flow from left atria to left ventricle.Valves maintain the unidirectional flow of blood and thus prevent its back flow.The mitral valve prevents blood from flowing backwards from the left ventricle to the left atrium in the heart. It's a one-way valve that closes when the left ventricle contracts, ensuring blood flows in the correct direction. Malfunction of this valve can lead to heart problems.
Explanation:The structure that prevents blood movement from the left ventricle back to the left atrium is called the mitral valve, also known as the bicuspid valve. This valve is a one-way valve that ensures blood flows in the correct direction. When the left ventricle contracts, this valve closes tightly to prevent blood from flowing backwards into the left atrium.
The mitral valve's functionality is crucial for the efficient functioning of the heart, as any disruption in the valve can lead to health complications such as mitral valve prolapse, mitral regurgitation, or heart murmurs.
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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.Question 2 (Multiple Choice Worth 2 points)
Which of the following correctly describes a way in which Earth's atmosphere interacts with the biosphere?
Living organisms breathe gases in the atmosphere.
Ecosystem distribution is related to precipitation; regions that receive large amounts of precipitation are wet and therefore
Ecosystem distribution is related to precipitation; regions that receive large amounts of precipitation are wet and therefore have increased vegetation.
Explanation:
Precipitation in the form of rain and climate determines the vegetation of an ecosystem. Ecosystems with abundant rainfall will have dense vegetation and one with scarce rainfall will have limited or no vegetation.
Tropical rainforest ecosystems receive large amounts of rainfall distributed year round and have thick vegetation.
Water is the prime growth factor for plants and rainfall is the main source of water for plants. Any ecosystem, maybe a desert, grassland, fertile plain, bushlands, evergreen forest etc depend upon rainfall.
The rainfall determines the density of vegetation, the type of vegetation, greenness, structure of plants or trees like foliage, height, branching etc
Ecosystem distribution is related to precipitation, as high rainfall areas can sustain richer and more diverse biomes, including tropical wet forests and aquatic biomes. Conversely, regions with lower precipitation often have less diverse ecosystems. Climate change also plays a significant role in ecosystem distribution.
Explanation:Ecosystem distribution can indeed be related to precipitation. In regions that receive large amounts of precipitation, the environment is typically wet and rich in biodiversity. This moisture can lead to the formation of various types of biomes, including tropical wet forests that exhibit high net primary productivity due to the warm temperatures, abundant water, and a year-round growing season. Other ecosystems, such as aquatic biomes, are shaped according to different factors, including density and temperature, as well as the amount of sunlight available.
On the other hand, regions with lower precipitation like deserts and the tundra have a lower primary productivity and less diverse ecosystems due to extreme temperatures and a lack of available water.
Climate change is another important factor impacting the distribution of ecosystems, as changes in temperature and greenhouse gas concentrations can affect the living conditions of various species and disrupt their habitats.
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Which term best describes the work done by a community in which people
mostly raise animals for meat, milk, and clothing?
O
A. Farming
O
B. Domestigating
Hunting and gathering
O
D. Manufacturing
Answer:
Explanation:
Farming
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.
Two steel balls that are the same mass and size are rolled with the same force across different level surfaces.
The ball rolling across carpet will come to a stop faster than the one rolling across concrete because of
A) air resistance.
B) friction.
C) gravity.
D) speed.
Answer:
The reason why the ball rolling across carpet will come to a stop faster than the one rolling across concrete is the friction (option B).
Explanation:
The contact surface on which the balls move is different. Irregularities in the carpet cause the ball in it to stop faster. The concrete surface is less irregular, and allows the ball to move a little more and then stop. This is due to friction.
In physics, friction is a force that is capable of opposing movement, since the contact of two surfaces limits its movement. A smooth surface produces less friction than a rough or irregular surface.
Since the friction that stops both balls occurs when they are in motion, it is called dynamic friction, that is, the force that causes a moving body to stop.
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The ball rolling across the carpet will come to a stop faster than the one rolling across the concrete because of friction.
Frictional force refers to the resistance force experienced by a moving object on a surface as a result of the opposing tendency of the surface.The smoother a surface is, the lower the frictional force it offers, and the more coarse a surface is, the more frictional force it offers.Two steel balls rolling on two different surfaces would experience similar forces. However, a carpeted surface is more coarse and irregular than a concreted surface.
Thus, the frictional force on the carpeted surface would be more and the ball would stop faster as opposed to the concrete surface.
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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%.
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.
Which of these actions is a reproductive strategy?
A.
a lioness teaching her young how to hunt
B.
a tiger hunting deer
C.
cattle grazing on meadows
D.
bats hanging upside down on trees
Answer:
Which of these actions is a reproductive strategy
a lioness teaching her young how to hunt
Explanation:
when a a lioness teaches her young how to hunt, it shows that the lioness wants continuity of its generation as a result practicing reproductive strategy.
Answer:
A
Explanation:
hope it helps
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
Rosalind Franklin’s photographs of the X-ray diffraction pattern of DNA provided important clues about the structure of the DNA molecule. What was revealed by the photograph that enabled Watson and Crick to build their model of the DNA molecule? Select all that apply. A. The nitrogenous bases form the backbone on the outside of each DNA strand. B. The DNA strands are twisted around each other. C. There are two strands in the DNA molecule. D. The nitrogenous bases are near the center of the DNA molecule.
Answer:
The correct answers: B, C and D.
Explanation:
X-ray diffraction studies of the DNA reveal the following:The DNA is comprised of two strands which are coiled around each other in the shape of a helix.The backbone of the DNA is made up of phosphate and deoxyribose groups, alternately, which are exposed towards the outside of the helix.The nitrogenous bases which form the hydrogen bonds that link the two helices are directed towards the centre of the helix.The atomic and molecular arrangement of the compound subjected to the X- rays can be defined by using the X-ray diffraction method.
The photograph enabled Watson and Crick to develop their DNA molecule structure and revealed:
Option B. The DNA strands are twisted around each other. Option C. There are two strands in the DNA molecule. Option D. The nitrogenous bases are near the centre of the DNA molecule.This can be explained as:
The DNA fragment comprises two antiparallel strands.They are in a twisting style and form a helical formation.The DNA molecule includes sugar, nucleotide and phosphate in alternative styles in helical formations.The phosphate and the sugar are projected to face outwards, while the nitrogenous bases face inwards.Therefore, DNA is a double helical arrangement with two antiparallel strands containing nitrogenous bases, sugar and phosphates.
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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.
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.
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.
Using the cowpox virus to create a virus for smallpox
Answer:
...induced a primary immune response and immunological memory. Because of this, an encounter with the pathogen would trigger a rapid and strong secondary response.