2. Gas exchange occurs in the bark through light and dark disruptions called:

Biology

2 answers:

LiRa [457]4 years ago

6 0

Answer:

Explanation:

Nutka1998 [239]4 years ago

6 0

Answer:

stomata

Explanation:

Stomata is a pure found in the epidermis of leaves, stems, and other organs, that facilitates gas exchange.

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What functions of the body are most obviously affected by alcohol?

Leya [2.2K]

Those controlled by the brain.

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4 years ago

In your research on gene regulation in E. coli, you produce 2 mutant strains with the same phenotype: they can grow on lactose b

morpeh [17]

Answer:

E) B and D.

Explanation:

A test that is used to determine if two mutations that are associated with a specific phenotype are allelic or non allelic is known as a complementation test.
If the mutation is allelic then the combination does not complement, but if complementation occurs it shows that the combination is not allelic.
In the given case, the mutants cannot grow on glucose, however a combination of two strains were able to grow on glucose, this means they are able to complement each other.
If they complement each other this means that mutations lie on different genes and since, they are affecting the growth on glucose it also confirms that the atleast 2 different genes are required for glucose metabolism in E.coli.

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3 years ago

An organism with 24 chromosomes in each body cell will produce sex cells with __________ chromosomes.

Alik [6]

<span>The organism will produce 12 chromosomes (A).

Sex cells are the products of meiosis. Daughter cells of meiosis contain half the number of chromosomes of the parent cell. So if the parent cell has 24 chromosomes, then the sex cell would have <em>12 chromosomes</em>.</span>

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4 years ago

Read 2 more answers

If all of your cells have the same complete set of DNA why do different cells in different proteins

Ivan

Why do we have different cells in our bodies if every cell has the same DNA?

The genome of a cell contains in its DNA sequence the information to make many thousands of different protein and RNA molecules. A cell typically expresses only a fraction of its genes, and the different types of cells in multicellular organisms arise because different sets of genes are expressed.

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3 years ago

Can anyone tell me what the # of DNA fragments are?

Svetach [21]

Answer:

1. 3

2. 2

3. 3

4. 3

5. 3

6. 3

The total number of fragments is 17

Explanation:

What the image shows is 6 columns of DNA sequences. It looks like the annotations represents cut sites for restriction enzymes. Restriction enzymes cut at defined sequences. The cut site is represented by the horizontal line (see attached pic, red arrows).

That means any time there is a horizontal line, a new fragment is made. Remember that the DNA is double stranded, so the cuts made will produce what we call "overhangs" or "sticky ends" where they are uneven in length.

Column 1