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padilas [110]
3 years ago
10

In what ways are the respiratory structures of all animals similar?

Biology
1 answer:
sveta [45]3 years ago
7 0
Answer: All respiratory structures in all animals serve the same purpose of providing the required molecules used in respiratory functions
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Open the site in your browser and play the podcast. Think about whether you believe the information presented or whether you hav
mario62 [17]

Answer:

My answer would be 5-6 (very trustworthy).

Explanation:

The person or organization providing the information has the credentials and knowledge to speak on this topic because the web site is--the domain name ".org" tells that this site is run by a nonprofit organization.The writer maybe a staff member at the Discovery Institute.

5 0
3 years ago
If a germ-line cell from a frog contains 10 picograms of DNA during G1 of interphase, then how many picograms of DNA would be pr
DIA [1.3K]

Answer:

10

Explanation:

The cell cycle is composed of three states: interphase, cell division and resting.

The interphase is composed of 3 phases: G1, S and G2 (in this order). During this state the cell prepares itself  for cell division. As part of the preparation the cell duplicates all its genetic material, that is, all its chromosomes. This duplication is done during the phase S.

During the meiotic cell division (composed of meiosis 1 and meiosis 2) a single diploid mother  cell (with duplicated chromosomes) produces four haploid daughter cells. the meiosis 1 produces two haploid cells with duplicated chromosomes, and the meiosis 2 produces 4 haploid cells with normal chromosomes (no duplicated).

If a germ-line cell from a frog contains 10 picograms of DNA during G1, then this cell will have 20 picograms of DNA before the product of the first meiotic division, and will have 10 picograms at the begining of the meiosis 2 (i.e prophase II)

7 0
3 years ago
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tankabanditka [31]
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6 0
2 years ago
Read 2 more answers
How do mutations contribute to genetic variation​
Alex

Answer: Genetic Change

Explanation:

Mutations contribute to genetic variation by causing new traits to emerge. Mutations happen when there is a change in the DNA of a creature developing in utero. These random changes in creatures are common, although most mutations end up being lethal or inhibiting to the organism. In rare cases, this mutation can prove benificial or helpful, and if the organism reproduces and the trait is passed along, it could become a new branch of genetic variation within the species.

6 0
1 year ago
An egg is released from the ovary but is not fertilized what process occurs about two weeks later
Advocard [28]
Menstruation occurs                                                                                                              
8 0
2 years ago
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