Answer: DNA is a nucleic acid
Explanation:
The acronym DNA stands for deoxyribonucleic acid.
I need helping naming
Answer and Explanation:
I answered what I could remember and some of the lines are confusing..
A normal body cell of a fruit fly contains eight chromosomes. Each normal
gamete of this organism contains only four chromosomes, as a result of
the process of *
binary fission
vegetative propagation
germination
meiosis
Answer:
Meiosis.
Explanation:
This is because meiosis is a type of cell division in that occur in sexual producing organism in which the chromosome number is reduce to half and produce for gamete. The diploid patent chromosome are reduced to half or haploid. This is the cell diving that produced sexual gamete i.e sperm and egg. In the case of fruit fly with 8 chromosomes and it is reduced to 4 is as a result of it undergoing meiosis.
5. Explain how the interconnectedness of living and nonliving things is shown in the
biogeochemical cycles. Answer in five to 10 sentences, giving specific examples
from at least two of the cycles.
Answer:
Biogeochemical cycles are the various cycles that essential for the living organism. In these cycles, elements or compounds are moved between living and nonliving organisms. These cycles are interconnected to support life and move the energy and molecules into the loop. Examples of such biogeochemical cycles are the water cycle, carbon cycle oxygen cycle, and many others.
Carbon is an element that is important and moves in different spheres of earth including the atmosphere, geosphere, and biosphere. Similarly, water is a compound essential for living organisms and moves from the hydrosphere to living organisms and the atmosphere.
What is the sexual reproduction process of angiosperms?
Answer:fertilization
Explanation:
Answer: Sexual reproduction occurs in three stages: pollination, fertilization, and dispersal. During pollination, pollen is transferred from the anther to the stigma. Once the pollen is stuck to the stigma, it produces a pollen tube that grows down the style to the ovary and into the ovule. A sperm cell then travels down the pollen tube into the ovule and fertilizes the egg cell. The fertilized egg is called a zygote. This zygote grows into a plant embryo. The embryo is located inside the seed along with the seed coat and stored food. The ovule develops into the seed. The ovary develops into the fruit that protects the seed. The fruit also helps disperse the seed. Seeds are dispersed, or spread, to new locations, where they grow into seedlings. or pollen is taken to the stigma. i took the test
Although ascospores are produced by mitotic division, none of the spores develop into fungi that are identical to either parental hyphae. What is the BEST explanation for this observation?
A.
The spores inherit half their genes from each parent.
B.
The spores inherit haploid nuclei from their parents.
C.
The spores inherit mutations as a result of meiosis.
D.
The spores inherit mutations as a result of mitosis.
Answer:
A
Explanation:
The correct answer would be that the spores inherit half of their genes from each parent.
The ascospores start their journey through the fusion of 2 haploid nuclei (karyogamy) to form a diploid zygote nucleus. The zygote nucleus develops and then divides by meiosis to produce 4 haploid daughter cells. Each daughter cell then divides mitotically, making it eight haploid nuclei at the end.
Hence, each spore inherits half of its gene from different nuclei.
The correct option is A.
Answer:
A. The spores inherit half their genes from each parent.
Explanation:
The explanation above is correct. Just wanted to confirm.
toxic substances may: *
Answer:
pollute our oceans and air?
Answer:
Burn is the answer
Explanation:
1.Cellular contact inhibition is important in which process?
A. Sweat production.
B. Tyrosinase production.
C. Wound healing.
D. Scoliosis development.
Answer:wound healing
Explanation:
Cellular contact inhibition is important in wound healing.
What is contact inhibition?Contact inhibition is the process whereby a normal cell's unchecked proliferation is inhibited as a result of its contact with neighboring cells.
What is wound healing?The process by which a living creature replaces lost or injured tissue with newly formed tissue is known as wound healing.
What happens when contact inhibition is lost?When this property is lost the cells undergo uncontrolled division and they form cancerous growth.
What are the stages of wound healing?The stages of wound healing are:
hemostasisinflammationproliferationremodelingTo learn more about contact inhibition, proliferation, and wound healing here
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please help Most ovens we use at home are powered by electricity or natural gas. These ovens use fossil fuels. Describe why the
energy used by a solar oven is considered a clean source of energy.
Answer:
Explanation:
Clean energy are renewable energy. This are energy from natural sources that are renewed without extra cost. Sun, wind, water are examples of renewable natural resources that helps generate clean energy.
The energy are refer to as clean because, they do not lead to any deposit of gasses that can affect the environment leading to environmental pollution. They have little or no side effects, no combustions or release of gases that are toxic or can deplete the environment as in the case of non- renewable energy.
Which of the following are examples of active transport that cells use to maintain homeostasis? (mark all that apply)
Pinocytosis and phagocytosis are examples of active transport that cells use to maintain homeostasis, hence option A and C are correct.
What is homeostasis?The propensity to oppose change in order to preserve a stable, largely constant internal environment is known as homeostasis. Negative feedback loops are frequently used in homeostasis to combat deviations from set positions in a variety of properties.
Moving uphill is considered active transportation. A cell must expend energy to transport materials against a concentration or electrochemical gradient.
This is precisely what active transport systems do they use energy, frequently in the form of ATP, to keep the proper concentrations of ions and molecules in living cells.
Therefore, option A and C are correct.
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What causes sickel cell anemia
Answer:
Sickle cell anemia is caused by a mutation in the gene that tells your body to make the iron-rich compound that makes blood red and enables red blood cells to carry oxygen from your lungs throughout your body (hemoglobin)
Explanation:
Answer:
Sickle cell anemia is caused by a mutation in the gene that tells your body to make the iron-rich compound that makes blood red and enables red blood cells to carry oxygen from your lungs throughout your body
Explanation:
After an earthquake, a small group of beetles from a much larger population becomes trapped in a cave. They are able to persist (continue living and reproducing) in the cave, but they cannot migrate back to the source population outside the cave. What would most likely result from this scenario
Answer:
They will evolve into a new species
Explanation:
The most likely result from this scenario is that the now isolated group of beetles will evolve and become a new beetle species that is unique from the old population.
The beetles have become geographically isolated from the original population and this makes them become a new species through the process of allopatric speciation. Allopatric speciation is an evolutionary mechanism of species formation as a result of being geographically separated from the old population. It is as opposed to sympatric speciation in which a new species is formed within a population of species without being geographically barred from the original population.
The fact that the isolated species are now in an environment that is different from that of the original population means that they will take a different route to evolve in terms of trying to adapt to the changes that would be occurring in their environment.
What does the circulatory system do for your body?
Answer:
The circulatory system, also known as the cardiovascular system, is a simple loop which starts, and ends, with your heart. It is a closed system, meaning blood does not enter or leave the system during its journey from your heart to your body and back again.
Explanation:
what would happen to exposed flesh in the higher levels of the atmosphere?
Rabbits can have different types of ears. Tall ears stand up and floppy ears drag the
ground. Assume that the ear type is determined by a single gene and that the allele for tall
ears is dominant over the allele for floppy ears. In a cross between two rabbits with floppy
ears, what percentage of the offspring would be expected to have tall ears.
100%
O 50%
2596
096
Answer:
Explanation: 0% because neither of the rabbits have the dominant gene for tall ears. We know that neither of them have the dominant gene for tall ears because
The parents both have floppy ears
How much of Earth is covered in water?
A. 95%
B. 75%
C. 25%
D. 50%
9 MBO
Which codon is the code for the amino acid serine (Ser)?
A. AGA
B.AGU
C.AGG
D.UGA
Among the three types of protists, which one produces spores?
Protozoa
Ciliates
Red algae
Slime molds
The spore-producing protists amongst the given answers are red algae, i.e., option C.
What are spores?Spores are reproductive cells that protists and other organisms produce. When two protist spores come into contact, they can fuse to form a diploid zygote. The zygote then goes through meiosis, producing haploid cells that continue the cycle.
Red algae reproduce both sexually and asexually. Asexual reproduction can occur via spore production as well as vegetative reproduction.
Thus, the correct option is C.
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PLEASE HELP ME !!!
which graph best represents the percentage of lighted Side of the Moon that can be seen by an observer in the northern hemisphere when the moon is at the position shown
Answer:
4
Explanation:
The graph that represents the percentage of lighted side of the moon is ; ( 4 ) i.e. The fourth graph .
Given that the observer is stationed at the Northern Hemisphere, as the moon orbits around the sun following a parabolic path, the observer will observe a fully lighted moon ( i.e. 100% ) when the moon get to the center of its parabolic path because at this position the earth cannot cast a shadow on any part of the moon.
Hence we can conclude that the graph that represents the percentage of the lighted side of the moon is Graph 4
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How does your radio tuner select for different FM radio stations
Modern radio tuners use a superheterodyne receiver with tuning selected by adjustment of the frequency of a local oscillator. This system shifts the radio frequency of interest to a fixed frequency so that it can be tuned with fixed-frequency band-pass filter
a certain stem cell produces only muscle
Answer:
unipotent stem cell
Explanation:
This sidewalk has changed over time.
A. Identify what caused the sidewalk to change and what the process causing the
change is called?
Answer:
expansion
The process where by things expand when they come in contact with heat
Why is the variety of life on Earth now different than it was in Earth’s past?
Answer:
becuz thingz evolve
What is the medullary index for an organism that has a medulla width of 2cm and hair shaft width 4cm? Is this organism human or animal?
Answer:
a. 1/2 b. The organism is an animal
Explanation:
a. What is the medullary index for an organism that has a medulla width of 2cm and hair shaft width 4cm?
Medullary index = diameter of medulla/diameter of hair.
Given that diameter of medulla = medulla width = 2cm and diameter of hair = hair shaft width = 4cm,
Medullary index = diameter of medulla/diameter of hair = 2 cm/4cm = 1/2
b. Is this organism human or animal?
Since the medullary index = 1/2 > 1/3 (if it is ≤ 1/3 it is human hair and ≥ 1/2 it is animal hair), it is animal hair. So, the organism is an animal.
What evidence that supports Darwin theory of evolution was not known until after he died
Answer:
The term "genetics" wasn't even coined until 1905, long after Darwin's death in 1882. And though the first fossil recognized as an ancient human—dubbed Neanderthal Man—was discovered in Germany just before Origin was published, he could not have known about the broad and varied family tree of ancestral humans.
Explanation:
hope this helps
The diagram below shows the branching tree diagram for cats.
A slanting, horizontal line is shown. On the extreme left, there is a label that says Common Ancestor. Along the slanting, horizontal line there are five dots labeled from left to right with the following traits Four limbs, Amniotic egg, Fur, Shearing teeth, and Retractable claws. There is one vertical line between each of the consecutive five dots. The lines are labeled from the from left to right as Amphibians, Reptiles, Marsupials, Dogs, Cats.
Which shared derived characteristic do reptiles, marsupials, and dogs have?
Amniotic egg
Fur
Retractable claws
Shearing teeth
Answer:
I am pretty sure it is shearing teeth
Explanation:
Answer:
shearing teeth
Explanation:
Please HELP PLEASE ITS A BIG GRADE
Answer:
I believe the third one I'm not sure if I'm right
Sphere interactions are driven by two sources of energy. The EXTERNAL source of energy comes from what?
Answer:
From the Sun
Explanation:
Solar power is energy turned by the sun into thermal or electricity. The cleanest and most generous source of usable green energy is solar energy.
Solar energy, Solar radiation capable of heat creation, chemical reactions or power generation. The cumulative number of solar energy events on earth significantly exceeds existing and planned energy needs worldwide.
Water is a polar molecule because?
A. It has a charge
B. It does not have a charge
C. Contains two hydrogen atoms for each oxygen atom
D. Different parts of the molecule have slightly different charged
Answer:
D. Different parts of the molecule have slightly different charges
Explanation:
Water is a polar molecule because different areas of the molecule have different and opposite charges
Oxygen has a higher electronegativity than hydrogen, which means the electrons of the water molecule will stay closer to the oxygen than the hydrogen.
This creates an uneven distribution where the oxygen has a partial negative charge and the hydrogen has a partial positive charge.
So, D is the correct answer.
The depolarization of the ____________ normally generates the action potential that leads to depolarization of all other cardiac muscle cells.
Answer:
The depolarization of the ___SOMA NEURONAL_________ normally generates the action potential that leads to the depolarization of all other cells of the heart muscle.
Explanation:
The depolarization of the neuronal body, that is, the body of the neuron, generates an action potential that is transported throughout the axon, until in the motor unit (union between neuron and muscle) the action potential is transmitted to the cardiac cell, depolarizing the membrane of the myocardial cell and thus effecting cardiac contraction.
Cardiac contraction occurs in a controlled, rhythmic and systematic manner, with autonomic character and as a consequence of the release of calcium from REL to LIC
What is the connection between the structure of DNA and the structure of a protein?
Explain using dystrophin as an example.
Explanation:
The sequence of basis on the DNA molecule is what directs the sequence of amino acids in the protein molecule - that's how it all links together! So, the sequence of bases in DNA codes for the sequence of amino acids of a protein.
