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Solnce55 [7]
3 years ago
11

What does the immune system do for months or years after the invasion of a certain antigen?

Biology
1 answer:
olga55 [171]3 years ago
7 0

Answer:

idk

Explanation:

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Do male or female songbirds build the nest? please show source and evidence to support your answer
hjlf

Actually it is the females the mostly build the nests the males will help build it sometimes both males and females will build it but typically it is females and that goes for all birds.

"Females typically build nests, but sometimes both parents or just the male"

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3 years ago
Which of these statements about white light is not true?
Ray Of Light [21]
C it contains only yellow and blue
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What are two types of evidence that evolution has taken place?
lukranit [14]
An example i can think of is...

the amount of salt present in human cells cytoplasm suggests we evolved from species in the sea
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3 years ago
15 Pts. Will give brainliest if correct.
Margarita [4]

Answer:

interbreeding occurs

Explanation:

The speciation is a process through which from one common ancestor, two or more different species occur. This can happen because of multiple different factors. One of the factors is that the populations should be isolated geographically. This leads to limited gene pool, and also no interaction with the rest of the population, while in meantime developing traits that are suitable for the particular environment. One of the easiest ways to see of two animals are belonging to different species is can they produce fertile offspring. If the answer is no, then that means that they have diverged enough to be considered as different species. One thing that doesn't contribute to speciation is the interbreeding, as it is a process that occurs within the population, and it is a common process through which the traits of the population are passed on to the next generation.

5 0
3 years ago
How does a noncompetitive inhibitor decrease the rate of an enzyme reaction?
Wittaler [7]

Answer :B. By changing the shape of the enzyme's active site.

check the attachment

Explanation: This is a type of inhibition , in which a molecule binds to another part of the enzyme instead of the  active site.

On binding, it disrupts the  normal hydrogen bond and hydrophobic   interactions holding the enzyme molecule in its three dimensional shape, therefore distorting the conformation and   ACTIVE SITE of the  enzyme (changed it shape).

Since the active site is the precise location enzyme must bind with substrates for enzymatic reactions,this makes the enzyme not fit  for binding with the substrate, therefore  the efficiency  is reduced. No substrate-enzyme complex, and hence no substrate-product  complex for the release of  products, this brings down the turnover rate and eventually

<u>the rate of reaction of the enzyme</u>

Thus, the enzyme function is totally blocked, even in high concentration of the substrate,

Download docx
4 0
3 years ago
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