Answer:
E) Reducing the number of chromosomes by half during meiosis ensures the chromosome number is maintained during fertilization.
A) Increasing genetic diversity ensures that no two haploid gametes are exactly the same.
Explanation:
Meiosis is a kind of cell division that strictly occurs in sexually-reproducing organisms. It is the process whereby four daughter cells that are genetically different from their parents are produced. In meiosis, the chromosome number of each daughter cell (gamete) is reduced by half. As highlighted in this question, the meiotic process is essential in the sexual reproduction and life cycle of many organisms.
This importance is attributed to the fact that:
- Reducing the number of chromosomes by half during meiosis ensures the chromosome number is maintained during fertilization. That is, a diploid organism (2n) produces a haploid gamete (n), which becomes diploid again when fertilized by another gamete.
- Increasing genetic diversity ensures that no two haploid gametes are exactly the same. This occurs because of a process called CROSSING OVER, which enables that the alleles of each gamete is recombined to be different from one another in order to promote genetic diversity.
Answer:
A, B, C, E
Explanation:
i just did it
what are the the four main categories of organic macromolecules ?
Answer:
There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids), and each is an important component of the cell and performs a wide array of functions.
Four main categories of organic macromolecules are as follow:
carbohydratelipidsproteinsnucleic acidWhat are macromolecules?Macromolecules are polymers containing long chains of molecular sub-units known as monomers. These play an important role in biophysical processes and composed of thousands of atoms that are covalently bonded.
Carbohydrate is a biomolecule having carbon, hydrogen and oxygen atom.It is the main source of energy of the body.
Lipids are macromolecules that are insoluble in water and the main function is to serve as structural component of cell membrane.
Proteins are macromolecules that are extremely complex in structure and made up of amino acid residues joined by peptide bonds.
Nucleic acids are biopolymer macromolecules and composed of nucleotide. The function is to carry genetic information which helps to make RNA.
Therefore,Four main categories of organic macromolecules are as follow:
carbohydratelipidsproteinsnucleic acidLearn more about macromolecules here:
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Explain how an abiotic factor (stronger storms, warmer oceans, or lower ocean pH) can affect populations in a coral reef ecosystem
Answer:
Climate change leads to: A warming ocean: causes thermal stress that contributes to coral bleaching and infectious disease.
Explanation:
Sea level rise: may lead to increases in sedimentation for reefs located near land-based sources of sediment. Sedimentation runoff can lead to the smothering of coral.
Linnaeus based one of his classification categories on plants. He even named the Kingdom Plantae. Which best describes the organisms in this kingdom?
A. They are autotrophic and have eukaryotic cells
B. They are made of prokaryotic cells
C. They are multicellular and do not have cell walls
D. They are always single celled and produce their own food
Answer:
b
Explanation:
all plants are make of prokaryotic cells.
Break question
what pets would you want
(p.s. could you please answer one of my questions)
Can anyone solve this
In recent years the elephant population in certain African ecosystems have seen a decreased. The decrease is most likely due tl
Answer:
mostly poaching
Explanation:
i dont know if this was the answer you wanted but...
nvm I had my head on the wrong question
how does biodiversity help with farming
Answer:
biodiversity is the basis of agriculture and our food systems. agricultural biodiversity also performs ecosystem services such as soil and water conservation, maintenance of soil fertility, conservation of biota and pollination of plants, all of which are essential for food production and for human survival.
good luck :)
hopefully, this helps
have a great day !!
Why can grasses not survive on the island yet?
If u looked at a SA cells and cardiac muscle cells under a microscope, do u think they would look the same or different from each other? Explain ur reasoning HELP MEE PLSSSSS
Answer:
They look a little bit different. SA cells contain fewer mitochondria, fewer myofibers, and a smaller sarcoplasmic reticulum. This means that the SA node cells are less equipped to contract compared to the atrial and ventricular cells.
What regulates breathing rate and how does the body sense when to breath?
Answer:
Involuntary respiration is controlled by the respiratory centers of the upper brainstem (sometimes termed the lower brain, along with the cerebellum). This region of the brain controls many involuntary and metabolic functions besides the respiratory system, including certain aspects of cardiovascular function and involuntary muscle movements (in the cerebellum).
Explanation:
The respiratory centers contain chemoreceptors that detect pH levels in the blood and send signals to the respiratory centers of the brain to adjust the ventilation rate to change acidity by increasing or decreasing the removal of carbon dioxide (since carbon dioxide is linked to higher levels of hydrogen ions in blood).
Given a DNA sequence of ACG, what would be the corresponding RNA sequence? Once you determine the RNA sequence, what would be the corresponding amino acid for the RNA codon? Would a change in one nucleotide of the DNA alter the corresponding amino acid? Explain.
Answer:
- RNA sequence: UGC
- Amino acid sequence: Cysteine
- Yes, a change in nucleotide will alter the amino acid.
Explanation:
According to this question, a DNA sequence was given as follows: ACG. The process of transcription will produce a RNA sequence from this DNA sequence using complementary base pairing i.e. A-U, G-C etc. Based on this, the mRNA sequence that will result of the DNA sequence above is UGC.
The resulting mRNA transcript is a codon (three nucleotides) that will be used in the process of translation to yield an amino acid. The mRNA sequence: UGC codes for amino acid Cysteine.
- A change in one nucleotide of the DNA will alter the corresponding amino acid because DNA sequence in a particular reading frame is responsible for the production of amino acid. Hence, a slight change in nucleotide might change the reading frame of the sequence and hence give rise to a different amino acid.
see attached...thank you
PLSS HELP
Look at the picture and answer the question(s) that follow.
Which of these strata are MOST likely the oldest?
-J and E
-K
-A and F
-D and E
fertilization of an egg to form a zygote takes place in?
A.urethra
B.uterus
C.cervix
D.fallopain tube
the dna structures
Answer:
Each DNA strand is composed of nucleotides—units made up of a sugar (deoxyribose), a phosphate group, and a nitrogenous base. Each strand of DNA is a polynucleotide composed of units called nucleotides. A nucleotide has three components: a sugar molecule, a phosphate group, and a nitrogenous base. Explanation:
Answer:
are you c a biologist or what
Explanation:
why do you want this answer
Which nucleic acid serves as a strand for protein synthesis?
a. tRNA
b. ribosome
c.mRNA
d.dATP
Answer:
c.mRNA...............
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Cells Unit Test 705
01:04:11
KAYLEN HAWKINS
QUESTION 17
Endocytosis relies on which two organelles to move molecules into the
cell?
Cell membrane and vesicle
Cell membrane and cell wall
Mitochondria and vesicle
4
Mitochondria and cell membrane
Answer:
Cell membrane and vesicle
The original source of the matter in food
Answer:
I think your asking what is the original source of the matter in food
Explanation:
if so The Sun is the major source of energy for organisms and the ecosystems of which they are a part.
Giving a lot of point and brainiest!!
How does cooling of magma affect crystal size?
A) Slow cooling creates small crystals
B) Fast cooling creates both large and small crystals.
C) Slow cooling creates large crystals
D) Fast cooling create large crystals
Answer:
When magma cools, crystals form because the solution is super-saturated with respect to some minerals. If the magma cools quickly, the crystals do not have much time to form, so they are very small. If the magma cools slowly, then the crystals have enough time to grow and become large.
Answer:
I learned about this, Uhm...
C is the right answer bc igneous rocks cool and form crystals.
Lava, since it comes out of a volcano, cools faster and has smaller crystals since they could not be developed enough.
Magma, still underground, cools slower than lava because of all the density and heat, which causes bigger crystals.
Hope this helps :)
What unit of time on Earth is based on the revolution of the Moon around the Earth?
A. day
B. year
C. hour
D. month
Answer: I think it’s months
Because I found this information... The Moon appears to move completely around the celestial sphere once in about 27.3 days as observed from the Earth. This is called a sidereal month
How are the smallest ocean waves produced?
Answer:
Ocean waves are usually formed by a distant wind. ... The area which the wind affects the surface is called the fetch. The larger the fetch, the greater the waves produced. the small waves generated by storm winds are often confused and disorganized.
Explanation:
Answer:
For a wave to effectively be produced there need to be large wind, long period of time and a large distance of water. If they are all reduced, then there would be a reduction in the intensity of the wave.
Explanation:
HELP URGENT!!!!!!!!!!!
Answer:
dominant trait
Explanation:
Recessive alleles can only show up when there is no dominant allele present to suppress them.
Answer: Dominant traits
Explanation:
Recessive traits only show up when there are no dominant alleles
Extraterrestrial traits are not a thing
How does a food chain differ from a food web?
A. A food chain identifies the consumers and producers, while a food web lists all of the animals in an ecosystem
B. A food web shows what to eat, while a food chain shows how the eating patterns are connected.
C. A food chain shows an eating pattern, while a food web shows how the various eating patterns are connected.
D. a food chain shows how eating patterns are connected among organisms, while a food web shows the eating patterns among organisms
Answer:
C
Explanation:
A food chain shows an eating pattern, while a food web shows how the various eating patterns are connected.
The text box below contains facts about salmon:
Facts about salmon. baby salmon migrate from freshwater streams and rivers to the ocean.
in the ocean, baby salmon d/r/i//n/k salt water.
Special cells on the salmon's gills called c/h//l/o//r/i/d//e cells help the salmon to e/x/c/r//e/t//e/ salt.
How do populations of baby salmon respond to changes in s/a//l/i//n/i//t/y as they migrate?
The baby salmon u/t/i/l/i//z/e// special structures but do not a/l/te/r/ their behavior.
The baby salmon al/t/e/r/ their behavior and u/t//i/l//i/z/e special structures.
The baby salmon u/t/i//l//i//z/e special structures to a/l/t/e//r their behavior.
The baby sa.l.m.on a/l/t/e/r their behavior but do not u/t/i/l//i/z/e special structures.
Answer:
what even is the question i am so cunfuzzles
Using the information in this photo, what can MOST LIKELY be learned about the rocks in the illustration?
A)
relative age
B)
absolute age
C)
melting point
D)
average rainfall
Answer:a
Explanation: got it right on usates
Some people's earlobes dangle or flap unattached, while others don't. This trait is genetically determined. Use the genetics simulation to explore the genes that determine whether earlobes are attached or unattached. One trait is dominant and the other is recessive. See what happens when you cross parents with different genetic combinations. Follow the specific instructions for each trial.
Complete question, Answer, and Explanation:
Due to technical problems, you will find the complete question, answer, and explanation in the attached files
Which of the following does not provide new genetic combinations?
Which step is a protein formed during gene expression?
a. reverse transcription
b. translation
c. dehydration synthesis
d. DNA replication
1) All of the following are examples of an asexual reproduction except
a) Cloning technique b) Forming zygots
c) Runners technique I
d) Tuber technique in the potato
Answer:
b) Forming zygots
Explanation:
A zygote can be defined as a eukaryotic cell formed by the fusion of gametes during sexual reproduction. In general, a zygote is a diploid (2n) cell produced by the fusion of two haploid (n) gametic cells (eg., in mammals, sperm and egg cells). In multicellular organisms, the zygote is the first stage of development, which will give rise to an adult organism as it divides and grows. A zygote cell can be considered as a pluripotent stem cell because it differentiates into all cell types.
The average molecular weight of proteins encoded in the human genome is about 50,000. A few proteins are very much larger than this average. For example, the protein called titin, which is made by muscle cells, has a molecular weight of 3,000,000. Estimate how long it will take a muscle cell to translate an mRNA coding for an average protein and one coding for titin. The average molecular mass of amino acids is about 110 daltons. Assume that the translation rate is two amino acids per second.
Answer:
13,636 seconds = 227.3 minutes = 3.79 hours
Explanation:
The titin protein has a molecular weight of 3,000,000 daltons, while the average molecular mass of one amino acid is 110 daltons, so it is expected that this protein is composed of 27,273 amino acids (3,000,000 daltons/110 daltons = 27,272.72). Moreover, and since the translation rate is two amino acids per sec, it is expected that the protein will be synthesized in approximately 3.79 hours (27,272.72/2 = 13,636 seconds = 227.3 minutes = 3.79 hours).