BIOLOGY HIGH SCHOOL

Which of the following is true about the alpine biome?a.
The alpine biome has four distinct seasons.
b.
It is characterized by the presence of coniferous trees.
c.
It is the largest biome in the world.
d.
It is located in mountain regions.

Answers

Answer 1
Answer:

Answer:

the correct answer is D

Explanation:

I got it correct on Edge 2022

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Cyclin-dependent kinases (cdks are enzymes involved with the control of mitosis; drs. lee hartwell and paul nurse won the nobel prize for physiology or medicine in 2001 for their work on cdks. what organism was used to study these enzymes

Answers

Answer:

Dr. Leland Hartwell utilized the baker’s yeast; Saccharomyces cerevisiae

Paul Nurse used a different type of yeast, Schizosaccharomyces pombe, as a model organism.

Explanation:

Dr. Leland Hartwell utilized the baker’s yeast; Saccharomyces cerevisiae, as a model system, to study the enzymes that are involved in the control of mitosis including deriving the checkpoints concepts etc. Paul Nurse used a different type of yeast, Schizosaccharomyces pombe, as a model organism.

Determine the most stable secondary structure that can be formed from the RNA oligonucleotide 5’-GAGUGCGCGAGCCUCU-3’. Consider only Watson-Crick base-pairing

Answers

Complementarity is achieved through interactions between nucleobases. In the RNA, base complements are adenine - uracil (A-U) and guanine -cytosine (G-C). RNA secondary structure is achieved when two regions of one strand base pair and form a double helix.
Respecting the rule of complementarity and base-pairing, some of the bases will pair and some will not, as it can be seen on the image. The stability depends on helix length, base composition, and the number of mismatches.

How can speciation of plants benefit humans

Answers

There are many ways, for example, new speciation can create new food for humans. Some plants that weren't edible, could now become edible. Also, medicine is often made out of plants, so a new plant might have new medical properties that humans could use. They could also be used for feeding cattle and humans need cattle.

Answer:

What you should of included in your response:

New species of plants can possibly be used as medicine.

New species of plants can be discovered.

Explanation:

edge 2021

Which statement accurately describes how identification of individuals through the use of genetic engineering is possible?     A. The DNA in mitochondria is passed from mother to child in the nucleus of a cell.
B. The Y chromosome doesn't experience crossing-over.
C. The mitochondria DNA in a mother and her offspring vary greatly.
D. The X chromosome can only be passed from a father to his son.

Answers

The identification of an individual by the means of genetic engineering is possible because the Y chromosomes in the males does not experience any crossing-over as there is only a single Y chromosome present in a human male.

The mitochondrial DNA is passed from the mother to child in the cytoplasm of the cell, and it is passed on without any changes. The X chromosome is can be passed from a mother to her son as he will receive Y chromosome from his father.

Hence, the correct answer is 'Option B - The Y chromosome does not experience crossing over'.
A. The DNA in mitochondria is passed from mother to child in the nucleus of a cell.

A benefit of genetic engineering is the production of valuable proteins that have helped in managing of illness in human beings. Bacteria were genetically engineered to produce proteins of medical importance. One example of such a protein is human insulin which is given the name humulin and is made using E. coli bacteria.Earlier,  insulin from pig cells was used to treat patients with diabetes but many of them could not tolerate it because it has a slightly different arrangement of amino acids from that of humans and so the human body rejects it. Humulin is tolerated by the human body and so many patients are now using it to lead normal lives.

What happened to the number of aquatic species as a result of the restoration activities in sudbury?

Answers

The best answer to this biology and ecology question is that the number of aquatic species would increase as a result of the restoration activities in Sudbury. Restoration activities helps in cultivating and protecting marine animals, resulting to the increase in number.

While dna in a human cell was being replicated, a single base was miscopied. what will most likely be the result for the cell in which it happened?

Answers

Answer:

The options to this question are missing, they are:

A) All the proteins the cell creates from the miscopied strand will do different jobs than the old ones.

B) Any miscopied DNA will be replaced with an accurate DNA copy once the cell divides.

C) Both new DNA strands will end up together in a new cell, and the inaccurate one will be discarded.

D) If the new sequence codes for the same amino acid as the original cell, it will function normally.

THE CORRECT ANSWER IS D

Explanation:

What occured to this cell replicating its DNA is called MUTATION, which is a change (small or big) in the nucleotide sequence of a DNA. The miscopied base will alter the nucleotide sequence of the DNA. Since a single base is involved, it is referred to as a POINT MUTATION.

A point mutation, such as the one in this case, can produce varying effects in the resulting organism. The mutation can either lead to a different protein in that particular sequence the mutation occured or have no effect on the organism.

The mutation will have no effect on the organism in a case where the base that was miscopied produced a codon that codes for the same amino acid as the original codon. Hence, the same protein will be produced and have both effect on the cell. This is possible because of the degenerate nature of the genetic code, as more than one codon codes for a given amino acid.
Mutation I presume ??
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