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V125BC [204]
2 years ago
6

Please help with this question

Biology
1 answer:
sergey [27]2 years ago
7 0

Answer:

C

Explanation:

the answer is C bc I read this and u can site it in the text

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What is the maximum magnification of most classroom compound light microscopes?
Nutka1998 [239]

Answer:2000x

Explanation:The maximum resolution, or resolving power (the ability to distinguish two points) of a compound light microscope is 0.2 µm; maximum magnification is 2000x.

4 0
3 years ago
A scientist is testing a new plant food to see if it causes plants to grow faster. The scientist tests two plants with the new p
SashulF [63]
The independent variable is the new plant food
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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
Bacteria can survive in extreme environments. True False
olchik [2.2K]

true, certain bacteria can survive in places like the dead sea and other high pH climates

5 0
3 years ago
Read 2 more answers
Which water conservation strategy is being used when a household uses eco-friendly cleaning products? (worth 1 point) a1. Elimin
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Answer:

Pollution prevention

Explanation:

The water conservation strategy being used when a household uses eco-friendly cleaning products would be <u>pollution prevention</u>.

<em>The cleaning of household materials generally generates wastewaters that somehow find their way into the water cycle of the environment. </em><u><em>Eco-friendly products are those that do not harm the environment in any way </em></u><em>and the use of eco-friendly cleaning products would ensure that the wastewaters generated from cleanings are minimally polluted, effectively conserving the water due to the environment.</em>

5 0
2 years ago
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