Explanation:
Proglottids are segments in cestodes that contain bot the male and female reproductive organs. These segments go ahead to make eggs and then dettach form the worm. They are excreted and become agents of infection on the next hoist. Proglittids formed near the neck of the worm are immature while those at the tail end are literally bags of mature eggs.
The scolex is the head of the worm that is attached to the host. It is also the part that ‘sucks’ nutrients from the host. It has hooks that it uses to anchor itself in the host. In some species, rather than hooks, there are suction-cups that use suction for anchorage.
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Gametes are haploid, while somatic cells are diploid. What is the difference between a haploid cell and a diploid cell
Answer: Haploid cells have 23 chromosomes while diploid cells have 46 (23 pairs) chromosomes
Explanation: Haploid cells are produced in a type of cell division called meiosis. In meiosis, parent cells undergo two cell divisions to produce four daughter cells with half the number of chromosomes in the parent cell. Diploid cells are produced by a type of cell division known as mitosis. In mitosis, parent cells undergo one cell division to produce two identical daughter cells that have the same number of chromosomes as the parent cell. Gametes undergo meiosis while somatic cells undergo mitosis.
3. Photosynthetic organisms are usually
O producers
decomposers
O chemotrophs
heterotrophs
Answer: Producers
Explanation: Photosynthetic organisms use the green pigment called chlorophyll to manufacture their own food in the presence of sunlight, carbon dioxide and water. These organisms are called producers or autotrophs.
Molecules of dna are composed of long chains of
Which label belongs in the area marked x?
Answer: the answer is A. iron
Explanation:
The label that belongs in the area marked X is the mitochondria.
Explanation:Label for Area X:The label that belongs in the area marked X is the mitochondria.
Mitochondria are organelles found in eukaryotic cells. They are responsible for producing energy in the form of ATP through cellular respiration. The main role of mitochondria is to generate ATP, which is required for various cellular processes.
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Kareem drew a diagram to compare flatworms and segmented worms. Which label belongs in the area marked X? Can reproduce sexually Are always parasites Are all sessile Are covered in setae
Answer:
C. are all sessile
Explanation:
Answer:
the actual answer is A
Explanation:
Why should extra precautions against sun exposure be taken when boating?
Answer:
Use good lotions that will protect your skin from the sun’s Ultraviolet rays. Good clothing, such as wide-brimmed hats, can help protect your skin. Drinking plenty of water keeps your skin hydrated and helps prevent it from becoming dried out. UV rays can also harm your eyes, so wear UV protective sunglasses.The sun is less powerful in the morning and late in the day when it’s not directly overhead.Explanation:
disorders of the blood forming organs is called
Answer: They are called Hematologic diseases which includes; rare genetic disorder, anemia,HIV,Sickle cell diseases
Explanation:
Electrical energy can produce many other types of energy.
When electricity runs through an electric stove, what other type of energy is produced?
A.
mechanical energy
B.
chemical energy
C.
heat energy
D.
sound energy
Answer:
Heat energy is the answer
Explanation:
I hope that answers your question.
An INHIBITORY signal is sent between neurons when __________ rushes into the neuron.
A. Na+
B. K+
C. Cl-
D. Ca-
An INHIBITORY Signal is sent between neurons when (A)Na+ rushes into the neuron.
Explanation:
When one spot of membrane supports an action potential, lots of \text {Na}^+Na+start text, N, a, end text, start superscript, plus, end superscript ions hurry into the cell by that spot. These ions radiated out sideways into the cell and can depolarize a nearby spot of membrane, stimulating the hole of voltage-gated sodium channels and causing the nearby spot to support its action potential.The action potential can only move in one direction – from the cell body towards the axon terminal – because a spot of membrane that has just experienced one action potential is in a “refractory period” and cannot withstand another.An INHIBITORY signal is sent between neurons when Cl- rushes into the neuron.
Explanation:
Inhibitory signal essentially pushes or slows the neuron’s brakes and inhibits the threshold to trigger an action potential.
Inhibitory signal occurs at synaptic membranes of neurons when neurotransmitters like GABA are released at the inhibitory synapses triggers an inhibitory postsynaptic potential. The neurotransmitter binds with Cl- ions and rushes the cl- ions into the neurons and hyperpolarizes the synaptic membrane. This will inhibit the neuron’s threshold to trigger an action potential.
Describe three rolls a paleontologist performs in their job
Answer: They discover fossils, learn about the history of the earth and evolution of species.
Explanation:
Unit Test
21
Active
22 23
24
25
TIME REMAINING
01:19:50
Which type of scientific statement is defined as a statement of fact that is generally accepted to be true and universal because
it has always been observed to be true?
theory
probability
law
hypothesis
The type of scientific statement that is defined as a statement of fact that is generally accepted to be true and universal because it has always been observed to be true is a law, which is the third option.
What is the scientific law?In science, a law is a statement of a universal pattern or regularity that describes an observed phenomenon in nature. Laws are typically based on repeated observations or experiments and are considered factual and reliable because they have been observed to be true in all known cases. Laws do not explain why a phenomenon occurs but rather describe what happens when certain conditions are present.
Hence, a scientific statement that is defined as a statement of fact that is generally accepted to be true and universal because it has always been observed to be true is a law, which is the third option.
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Carlos and his family were camping over the summer and came across the fossil picturered above. When school started, Carlos asked his parents if he could share the fossil with his class. Carlos told his peers he discovered the fossil within a particular layer of rock. What type of rock was this fossil most likely found in?
Answer:
Sedimentary
Explanation:
Almost all fossils are preserved in sedimentary rock because Igneous rocks form from molten rock, and rarely have fossils in them. Metamorphic rocks have been put under great pressure, heated, squashed or stretched, and fossils do not usually survive these extreme conditions.
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Is a cheetahs speed considered genetic variation? If so, what mechanisms would explain this variation?
Yes the speed of cheetah is considered a genetic variation.
Explanation:
A cheetah named Chewbaaka's genome has been sequenced and found that 11 genes have undergone mutations over generations to provide the speed to cheetah.
The changes in genes over a period of time in several generations caused genetic variation in the cheetah and natural selection leading to its evolution to fast runner.
I really need help!
A solar flare is observed on Earth
A) immediately.
B) approximately eight years after it happens on the Sun.
C) approximately eight hours after it happens on the Sun.
D) approximately eight minutes after it happens on the Sun.
The answer is D. Because it takes light 8 mins to reach the Earth from the sun.
Answer:
Your answer is option D - approximately eight minutes after it happens on the sun.
Explanation:
You can give Brainliest to the first person that answered they wrote more down
Bob adds heat to a liquid substance. When enough heat is added, A. its particles move farther apart and the substance becomes a gas. B. its particles move farther apart and the substance becomes a solid. C. its particles move closer together and the substance becomes a solid. D. its particles move closer together and the substance becomes a gas.\
A.
its particles move farther apart and the substance becomes a gas.
Answer: Its particles move farther apart and the substance becomes a liquid.
Explanation: When enough heat is added to a solid substance, it melts, changing from a solid to a liquid. When this happens, its particles move farther apart and the substance becomes a liquid.
A maglev train uses powerful magnets to lift the train above the tracks as it moves forward. Such a design reduces what following force.
A rolling friction
B gravity
C air resistance
D fluid friction
A. Rolling Friction
Explanation:
Maglev is train transportation that uses magnets. Maglev will have two sets of magnets, the function of the first set of the magnet is to repel and push the train and lift the train from the track and the function of the second set of the magnet is to elevate the train further. In this process, the lack of friction is the main advantage.Guideway is the magnetic coil running along the track and it repelling the big magnets present on the undercarriage of the train. This repulsion causes the train to go up by 1 to 10 centimetres above from the guideway. All the maglev trains are floating on the magnetic cushion and it reduces the rolling friction.Answer:
They use magnets
Explanation:
when cells are grown in a laboratory, which factor can stop normal cells from dividing
What are several adaptations that leaves have undergone? Why do leaves have adaptations in different parts of the world?
Explanation:
example= leaves of plants, in Africa, point downward because Africa gets little rain if any. the leaves point downward because it directs the rain to the root of plant.
so, parts of the world, like rainforest, leaves are shaped like "cups" that animals that live in trees, can drink the h2o from leaves, Instead of leaving their habitats. if they were 2 travel downwards, preditors lurk,(snakes, chimpanzees, etc...) would be preditors...
Carl and Abby are discussing what they have learned in class about electricity and magnetism. Carl tells Abby that an electric current running along a wire can be used to produce a magnetic force. Abby, on the other hand, tells Carl that moving electrons through a magnetic field can produce an electric current.
Carl and Abby are discussing what they have learned in class about electricity and magnetism. Carl tells Abby that an electric current running along a wire can be used to produce a magnetic force. Abby, on the other hand, tells Carl that moving electrons through a magnetic field can produce an electric current. Which of the students is/are correct? A. Only Abby is correct. B. Both Carl and Abby are correct. C. Neither student is correct. D. Only Carl is correct.
Answer:Both Carl and Abby are correct.
Option B
Explanation:The electrons that move through a magnetic field are moving in a circular motion. This is because the electric field and magnetic fields are perpendicular to each other. And the electrons move maintaining the Fleming's Left Hand Rule. And by current, we actually mean moving electrons. So electrons moving in magnetic field can produce current. So Abby is correct.
According to Carl, the electric current moving through a wire can produce magnetic field. This is the magnetic effect of current. The magnetic field produced by the wire is perpendicular to the wire maintaining Fleming's Left Hand Rule and its strength depends on current strength and distance from wire. So both Carl and Abby are correct.
What kind of pollution might cause whales and dolphins to strand on beaches?
Marine pollution is the cause for dolphins and whales to strand on beaches.
Explanation:
Marine pollution is caused by the combination of chemicals and trash, industrial and residential waste, plastic waste, etc that are washed away from land sources into the ocean which causes harmful effects to the health of marine living organisms.Frequently dolphins and whales strands on the beaches because of the plastic wastes that are consumed by whales and in case of dolphins some plastic stuck up in their nose which blocks to them breath freely thereby resulting to death.These organisms die because of pollution and changes in the direction tides push these dead animals to shore.How is biotechnology being used in the fields of medicine, forensics, or agriculture? Choose ALL that apply.
A) Gel electrophoresis is used for the separation and analysis of DNA, RNA and proteins, based on their size and charge.
B) In the future, scientists hope gene therapy will allow doctors to treat a genetic disorder by inserting a gene into a patient's cells instead of using drugs or surgery.
C) DNA sequencing may be used along with DNA profiling methods for forensic identification and paternity testing.
D) Gene therapy is currently being used to correct genetic mutations by inserting functional genes in their place.
E) Therapeutic cloning could allow an individual's own cells to be used to treat or cure that person's disease, without risk of introducing foreign cells that may be rejected.
Answer:
A,C,and E
Explanation:
Therapeutics, diagnostics, genetically modified crops for agriculture, processed foods, bioremediation, waste management, and energy generation are just a few of the uses for biotechnology, hence option a, c, and e is correct.
What is biotechnology?The most well-known use of biotechnology is the use of genetic engineering to produce therapeutic proteins and other medications.
Mass-producing insulin, human growth hormones, follistim (to treat infertility), human albumin, monoclonal antibodies, antihemophilic factors, vaccinations, and several more medications have all been made via genetic engineering in medicine.
Therefore, in a scientific study, creatures are genetically modified to learn how certain genes operate, hence options a, c, and e are correct.
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A parent cell gives rise to daughter cells with identical genetic information. Which of the following data supports the idea that heritable information is passed from a parent cell to a daughter cell through the process of mitosis??
A child has brown eyes; one of its biological parents has green eyes, and the other has brown eyes.
A feline skeletal muscle cell undergoes cell division, resulting in two feline skeletal muscle cells.
A human sperm fuses with a human egg cell, resulting in the development of a new human.
A long-stemmed plant reproduces with a short-stemmed plant, and the offspring are all long-stemmed.
Answer:
A feline skeletal muscle cell undergoes cell division, resulting in two feline skeletal muscle cells.
Explanation:
We are looking for a parent cell that gives rise to daughter cells with identical genetic information.
In simpler words, we are looking for something that makes 'clones' of itself.
In this statement (second option), the parent and daughters are all feline skeletal muscle cells.
A feline skeletal muscle cell undergoes cell division, resulting in two feline skeletal muscle cells.
Other incorrect choices: (All having to do with reproduction).
A child has brown eyes; one of its biological parents has green eyes, and the other has brown eyes.
This situation has two parents, each with a different trait. The child takes one of the parent's trait. The parents did not make a 'clone' of themselves.
A human sperm fuses with a human egg cell, resulting in the development of a new human.
The parents don't make 'clones' of themselves. The sperm did not make more sperm. The egg did not make more egg cells.
A long-stemmed plant reproduces with a short-stemmed plant, and the offspring are all long-stemmed.
The offspring plant only took the trait from one of it's parents. Also, whole plants are not individual cells.
Final answer:
The evidence that a feline skeletal muscle cell divides and produces two genetically identical daughter cells supports the idea that mitosis is the process through which heritable information is passed from parent to daughter cells.
Explanation:
The scenario that best supports the idea that heritable information is passed from a parent cell to a daughter cell through the process of mitosis is the example where a feline skeletal muscle cell undergoes cell division, resulting in two feline skeletal muscle cells. During mitosis, a single cell divides to produce two identical daughter cells, each with an identical set of chromosomes. This cell division ensures that the genetic information in the parent cell is accurately duplicated and passed on to each daughter cell, maintaining genetic consistency in the types of cells produced. This is how heritable information is preserved during growth and tissue repair in multicellular organisms.
The division of the nervous system that includes the
brain is the
Select one:
a. somatic nervous system
b. peripheral nervous system
C. central nervous system
d. autonomic nervous system
Answer:
C. central nervous system
Explanation:
It includes the brain.
The brain is part of the central nervous system, which also includes the spinal cord. This system controls most of the body and mind functions. The somatic, peripheral, and autonomic nervous systems are separate divisions of the nervous system.
Explanation:The division of the nervous system that includes the brain is the central nervous system (Option C). The central nervous system is one of the major divisions of the nervous system and it comprises the brain and the spinal cord. This system plays a crucial role in controlling most functions of the body and mind. In contrast, the somatic, peripheral, and autonomic nervous systems encompass other components and areas of the nervous system, but do not include the brain.
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amino acids are used to build
Answer: proteins
Explanation: Amino acids are the building blocks or monomeric units of proteins. There are twenty naturally occurring amino acids. These amino acids are joined by peptide bonds to form polypeptide chains. During protein synthesis, the genetic code on the mRNA is read by the ribosome and the amino acid it codes for is fetched from the cytosol by the tRNA and used to make a polypeptide chain which then undergoes posttranslational modifications to form proteins.
Amino acids are used to build proteins. In living things, proteins play a number of different roles since they are substantial, complicated molecules. In addition to supporting structural functions, enzymatic activity, transport, and communication, they also participate in a variety of other biological activities.
An extended chain of amino acids called a protein is made up of these amino acid chains and peptide bonds. 20 different amino acids, each with a distinct side chain, are often found in proteins. The shape and function of a protein are governed by the particular amino acid sequence of the protein.
In order to produce a messenger RNA (mRNA) molecule, which is used by cells to manufacture proteins, transcription is the process by which a cell uses genetic information encoded in DNA to create a molecule of mRNA. A process known as translation is subsequently used to convert the mRNA molecule into a series of amino acids.
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which tissues in plants is similar in function to the circulatory system in humans ?
Explain the value or importance of using to International System of Units when describing motion. Provide an example that supports your reasoning.
The International System of Units is used just for convenience and easy communication of these scientific units.
Explanation:
International unit system is the modern system of units used to measure quantities like length(m), speed (m/s), mass (kg), temperature ( Kelvin), etc. is makes easier for people from different countries to understand.If we take the example of motion, where it is measured in meters as per International unit system if you like to say that I moved 4 m away from the chair. People who have an idea on what is a meter can only make a sense of what he says. Hence, there is a need for an International System of Units to make sense of measurable scientific quantities to people from different countries.How do you do this please it’s due tomorrow
3. genotype is round seed
phenotype is Rr
4. genotype is grey fur
phenotype are WW and Ww
5. genotype is short
phenotype is tt
1. genotype is high metabolism
phenotype are HH and Hh
Explanation:
The dominant trait is the capital letter and the reccessive is the lowercase letter.
To do a punnet square you bring down each letter say like problem 1, you bring down capital D down and little d down to each of the 2 squares below them, then you drag the sides to the right of the two squares and you get DD for the first square, then Dd, then below Dd, then next to it DD.
Phenotype is a organism's actual appearence.
Genotype is a gene combination. The gene combination that determines the phenotype
Answer: 3) Possible phenotypes is Rr only. All offsprings have Rr genotype.
Possible phenotypes: All the offsprings have round seed.
4). Possible genotypes are WW, Ww and ww.
Possible phenotypes: Three offsprings have white fur while one offspring has black fur.
5). Possible genotypes is tt only, all the offsprings have tt genotype.
Possible phenotypes: All the offsprings are short
I) Possible genotypes are HH and Hh.
Possible phenotypes: All the offsprings have high metabolism.
Explanation: Dominant trait is able to express itself in the presence of a recessive trait. A recessive trait is not able to express itself in the presence of a dominant trait.
Genotype is the gene makes up of an organism while phenotype is the physical manifestation of the genetic make up. Phenotype is simply the outward appearance of an organism which are usually controlled by the genes.
See the attached punnet squares for better understanding.
Which of these choices is the smallest unit of matter?
atoms
molecules
droplets
vapor
Which statement is true about the adaptations of organisms?
O
A. They are acquired during life.
O
B. They are inherited from parents.
O
C. They are necessary for reproduction.
O
D. They are learned as needed.
Explanation:
Characters are certain features that are inherited from parents .
But all characters are not passed from parents to offspring .
There are certain variations also shown by an individual as compared to parents .
There are certain characters or features that are developed in organism not as a result of heredity or variation . They are refereed as Adaptation .
Adaptations
They are the certain characters that are developed in an organism according the conditions in which it survives .
The organism adapt to environmental condition in order to survive better and cope up better with the surroundings .
Answer:
B
Explanation:
what is the complimentary strand to AGG-CTA_AAC
Answer: The complementary strand is TCC- GAT - TTG
Explanation: During DNA replication, each strand of the DNA serves as a template for the synthesis of a new strand, thereby producing two new DNA molecules, each with one new strand and one old strand. A template is a DNA strand that would allow nucleotide molecules to be lined up in a specific order and be joined to create another DNA with a unique sequence. This results in creation of a double stranded DNA in which each strand is complementary to the other. In nucleotide base pairing, Guanine pairs with Cytosine while Thymine pairs with Adenine.
G = C while T = A.