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Georgia [21]
3 years ago
15

Which three structures are found in both prokaryotic and eukaryotic cells?

Biology
1 answer:
nadezda [96]3 years ago
3 0

Answer:

It would be >>2.ribosomes, DNA, cytoplasm

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Anyone know the answer
inessss [21]

Answer:

b.nuclear energy to heat energy to electrical energy

4 0
3 years ago
Which of the following is true ?
yulyashka [42]
Water is important to some organism.... i think
6 0
3 years ago
Read 2 more answers
20 POINTS
podryga [215]
I think it will be RNA for both questions
8 0
2 years ago
Read 2 more answers
Which of the following statements regarding restriction enzymes is NOT true?
Anni [7]

Answer:

The correct option is option A

Explanation:

Restriction enzymes are endocleases that cleave DNA fragment (<u>of usually four, five or six nucleotide long</u>) at <u>specific sites to produce blunt or sticky ends</u>. They <u>recognize palindromic sequences of host DNA when cleaving the specific sites</u>. The sequences below (on complementary strands) give an example of a palindromic sequences.

5'-CCC║GGG-3'

3'-GGG║CCC-5'

As can be seen above, when read from 5' to 3', the two sequences are the same despite being on opposing strands. And when cut between the guanine (G) and cytosine (C) (as shown above), it produces a blunt end. But when cut as shown below produces a sticky end.

5'- G║AATTC -3'

3'- CTTAA║G -5'

The explanation above shows options C and D are right while option A is wrong (hence the correct option).

Also, bacteria prevent their own DNA from been digested by restriction enzymes by adding methyl group to their restriction sites <u>which prevents restriction enzymes from recognizing restriction sites of their DNA;</u> this generally makes bacterial DNA to be highly methylated. This explanation makes option B right also.

6 0
3 years ago
If nondisjunction occurs during meiosis,
tresset_1 [31]
The answer is choice B.

Nondisjunction happens when the chromosomes don't separate correctly during meiosis, which can result in an extra copy of certain chromosome.

I hope this helped a little bit.
6 0
3 years ago
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