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Levart [38]
3 years ago
9

Which of the following is true of T-lymphocytes.

Biology
1 answer:
allsm [11]3 years ago
4 0
Hello.

The answer is 

<span>B.They help produce plasma cells. 

Have a nice day</span>
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Approximately 72 hours (3 days)

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3 years ago
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How do daily human activities effect the ecosystem?
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things that we do daily such as driving for example, has an effect on our ecosystem. Driving pollutes the air in our ecosystem and uses up gas and diesel resources.

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3 years ago
Why are antibiotics effective in curing diseases against some pathogens but not others?
Leya [2.2K]

Answer:

The correct answer is "I, II, and III".

Explanation:

The missing options of this question are:

I only

II only

III only

I, II, and III

The correct answer is "I, II, and III".

Antibiotics are of different spectrums of activity depending on the number of pathogens they can kill. They are different reasons for this differences in antibiotic specificity:

I. Antibiotics interrupt processes found in some but not all pathogen cells. For instance, some antibiotics are directed to cell walls that not all bacteria posses.

II. Some pathogens have no metabolic processes to interrupt. The antibiotics that are directed to metabolic reactions of bacteria are not effective in treating viruses because they do not perform this metabolic reactions.

III. Some pathogens have developed genetic resistance to specific antibiotics. Bacteria have a remarkable genetic plasticity having plasmids that can be easily transmitted among them, which give them antibiotic resistance.

7 0
3 years ago
Which of the following is not an example of mechanical control of nonnative species?
olasank [31]

Answer:

The answer is A.

Explanation:

Quizlet said so.

Have a nice day :)

3 0
2 years ago
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1)The picture is an aerial view of what and what type boundary forms this feature?
melamori03 [73]

Answer:

The correct answer is - aerial view of the fault line of San Andreas which represents a transform or strike-slip type of boundary.

Explanation:

The picture is given in the question is an aerial view of the fault line of San Andreas.

A fault is a planar break or intermittence in a volume of rock across due to rock-mass movement that leads to significant relocation or displacement. In San Andreas, the faultline represents the transform or strike-slip type of boundary.

Observation:

  1. A complex zone of crushed and broken rock
  1. Many smaller faults branch
5 0
3 years ago
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