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BigorU [14]
3 years ago
14

When is the lac operon most active?

Biology
1 answer:
Over [174]3 years ago
8 0
I believe it's "C. When glucose levels are low and lactose is present" I may be wrong.
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ants and aphids often live near each other. the ants feed on the wastes produced by the aphids, and the aphids are protected fro
matrenka [14]
The answer is <span>c. mutualism.
</span>
<span>Mutualism is a relationship between two different species in which both species have benefits. In this example, ants benefit because they feed on aphids' wastes while aphids benefit because ants provide them protection.
</span>
<span>Commensalism is a relationship between two species in which only one of them has benefit, and the other one is not affected. Parasitism is a relationship between two species in which only one of them has benefit, and the other one is harmed.</span><span>


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7 0
3 years ago
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A b c d ?? pls help me
TEA [102]

Answer:

cell membrance

Explanation:

because that is the defect mostly to be located

7 0
3 years ago
Developing a new vaccine takes about 5-10 years. So how is it possible to develope Corona vaccine so quickly?​
rusak2 [61]

Answer:

vaccines were designed by using new technologies (i.e., RNA-based vaccines and adenovirus-based vaccines)

Explanation:

RNA-based vaccines are vaccines based on the delivery of specific messenger RNA (mRNA) sequences that are capable of encoding only one viral protein, thereby preventing the complete viral cycle/replication. Subsequently, this protein is recognized by the immune system that generates memory immunity by synthesizing specific antibodies against this protein (in this case, the spike S protein). On the other hand, adenovirus-based vaccines are vaccines designed by inserting a transgene cassette into an adenovirus which is used as vector to produce one specific viral protein inside the host. Like mRNA vaccines, this antigenic viral protein is then recognized by the immune system in order to produce antibodies against a defined protein epitope, thereby producing memory immunity.

6 0
2 years ago
What would happen if you fed termites a drug that killed trichonympha?
yaroslaw [1]
<h2>Answer:</h2>

Termite will not perform its function which is digesting cellulose. Hence termite will unable to decay woods.

<h3>Explanation:</h3>

Termites and trichonympha ( a protist ) are in symbiotic relation. Trichonympha lives in the hind gut of a termite. Termites give a home to trichonympha while trichonympha produce an enzyme which is used by termites to digest cellulose. So without trichonympha, there will be no enzyme and no digesting activity by termites.

7 0
3 years ago
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in order to provide meaningful information measurements must be expressed in terms of their A. Numbers B. Units C. Accuracy D. Q
shepuryov [24]
I would go for C. Accuracy is the best one if you have the right information then your numbers should be right
4 0
3 years ago
Read 2 more answers
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