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Lady bird [3.3K]
4 years ago
10

Can somebody help me, please?​

Biology
1 answer:
avanturin [10]4 years ago
3 0

Answer: c

Explanation:i thank that the answer is C because it moved all of the organism so i was guessing that that would take long term change.  so primary disturbance.  I hope this helped.  Have good day

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What is self correction in science
notsponge [240]

Answer:correcting yourself

Explanation: they key to that question is “self correction” it’s when you find your mistake and correct it

7 0
3 years ago
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
How does facilitated transport (facilitated diffusion) help a cell maintain homeostasis?
7nadin3 [17]
Diffusion is when particles move from an area of high concentration to an area of low concentration. Think of it like a little kid party with two bouncy houses. Let's say that both bouncy houses have the same number of kids, but then half of the people in one bouncy house decide to go get lunch. Then one bouncy house is really full and the other almost empty! So you move to the empty bouncy house so you have more space to jump. This is diffusion. So it helps homeostasis because (back to the bouncy house example) you helped even out the two bouncy houses. Now let's say the kids come back from lunch. Now that bouncy house is too crowded so you move back to the now-emptier one. This is diffusion and you would be helping maintain homeostasis, or an equal level, in both bouncy houses.
7 0
3 years ago
Explain why it's advantageous to have several different organ systems instead of one large system to handle all of the human bod
AfilCa [17]

Answer:

to avoid a general collapse of the system (eventually caused by the failure of the local organs)

Explanation:

An organ system can be defined as a group of organs that work together as a unit in order to perform a particular function. In an organ system, each organ has specific functions and is composed of different tissues that in turn have specialized tasks. Organ systems include, among others, the cardiovascular system, respiratory system, digestive system, urinary system, skeletal system, endocrine system, nervous system, etc.

3 0
3 years ago
ASAP!
drek231 [11]

Answer:

C

Explanation:

Active transport requires energy, while passive energy does not.

4 0
2 years ago
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