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oksano4ka [1.4K]
3 years ago
7

What led to the understanding of complimentary base pairings in dna

Biology
1 answer:
maxonik [38]3 years ago
4 0

The complementary base pairing of the DNA  is the two strand of the DNA molecules have the complementary base pairs in the structure.

<u>Explanation:</u>

The DNA strands contain the nucleotide sequence which helps the strand to supply the information needed for the molecules to produce the partner in the DNA structure.

If the strands of the DNA molecules are separated then each sequence can be used as a pattern, so it can template to produce the complementary strands in the DNA easily.

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(31) The rough endoplasmic reticulum (A) has ribosomes bound to it (B) is part of the membrane system found throughout the cell'
worty [1.4K]

Answer:

(D) all of the above

Explanation:

The rough endoplasmic reticulum is part of the endoplasmic reticulum, the other one is known as the smoother endoplasmic reticulum.

1. This rough endoplasmic reticulum is considered rough because it has ribosomes bound to it.

2. Also, it is part of the membrane system found throughout the cell's cytoplasm, even though its density is considered to be higher in some places, such as near the nucleus.

3. It is also is connected to the nuclear envelope or membrane

Some of its functions include

1. It produces antibody in certain leukocytes

2. It produces insulin in pancreatic cells

Hence, in this case, the correct answer is Option D "all of the above."

4 0
2 years ago
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mojhsa [17]

Answer:

The gene for beta-galactosidase turns off.

Explanation:

The gene that codifies the beta-galactosidase enzyme is part of the <em>lac</em> operon, which also contains two other genes that produce enzymes involved in the metabolization of lactose.

Between glucose and lactose, the bacteria will preferentially use glucose as an energy source. On the other hand, lactose is a dimer, and thus a series of enzymes are needed to process lactose before its use as an energy source.

If there is no lactose present, the genes contained inside this operon are turned off (the operon is repressed).

6 0
3 years ago
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Answer:

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Explanation:

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Temporal isolation

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