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Rashid [163]
3 years ago
14

Vaccinations elicit a primary immune response so that secondary immune responses are rapid and symptoms are mild. vaccinations e

licit a primary immune response so that secondary immune responses are rapid and symptoms are mild.
a. True
b. False
Biology
1 answer:
Oliga [24]3 years ago
3 0
The answer would be true

The objective of vaccination is to elicit the primary immune response by introducing pathogen antigens. This antigen can be a whole weakened pathogen or just part of pathogen proteins. 
The antigen will activate the primary immune response cascade that <span>will </span>activate of B-cells and T-cells from the secondary immune response. This will makes secondary immune response ready when the real pathogen comes.
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Debora [2.8K]

Answer:

The virus uses the host cell to make new viral parts,

Explanation:

4 0
3 years ago
What is the relationship between cellular respiration and photosynthesis?
Alex Ar [27]

Answer:

A

Explanation:

Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process

8 0
3 years ago
Which step in the PCR program would you have to change if your fragment would have been 10 times longer and how?
bekas [8.4K]

Answer:

increasing extension time

Explanation:

The Polymerase Chain Reaction is a technique widely used in molecular biology laboratories to amplify target DNA regions. The standard steps of a PCR are as follow 1-denaturation, 2-annealing and 3-elongation/extension. These steps are repeated 15-40 times in order to exponentially amplify the linear DNA fragment. It is well known that longer extension times can be used as a strategy to increase the yield of longer PCR products. This is because the extension time depends on the synthesis rate of the DNA polymerase used in PCR technique and the length of the DNA fragment to be amplified.

7 0
3 years ago
Approximately how far apart were north america and europe 200,000 years ago
Ne4ueva [31]

The correct answer is - 1,180 km.

North America and Europe move away from one another, though on the other end of the plates, the Eurasian and the North American plates are actually merging. Since the rate of moving away is 2 cm per year, and the current distance is 1,184 km between North America and Europe, the distance between them 200,000 years ago was 1,180 km.

To get to the result we only need to multiply the number of years with the annual movement

2 x 200,000 = 400,000

Then divide the result with 100,000, as that is how much cm are in one km

400,000 / 100,000 = 4

And we get 4 km, in this case 4 km less, thus the distance between the two, 200,000 years ago, was 1,180 km.

4 0
3 years ago
Compare how eyes work compared to a camera
blondinia [14]

Answer:

plz give brainlyist I'm tryingcamerasblurriness to level up

Explanation:

can zoom in cameras

eyes are connected to your brain

eyes can be damaged in more ways than

the camera can fix their  while we would need glass

and more

6 0
3 years ago
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