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iris [78.8K]
3 years ago
12

Which of these is true about vaccines?

Biology
2 answers:
Bad White [126]3 years ago
8 0

Answer:

A. C, and D

Explanation:

A: it inserts that type of virus into your body so your immune system learns how to defend your body from it.

C: Your body produces some type of small organism cell or whatever it is to work and fight against that specific virus.

D: Yes, the vaccine is basically the virus but a test so your body learns how to fight it.

zhenek [66]3 years ago
5 0

Answer:

a

Explanation:

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Any alloy of iron mixed with a small amount of carbon to increase its strength or malleability is called _______________.group o
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Any alloy of iron mixed with a small amount of carbon to increase its strength or malleability is called Steel.

<h3>Why we use alloy ?</h3>

The most common reason for alloying is to increase the strength of a metal. This requires that barriers to slip be distributed uniformly throughout the crystalline grains. On the finest scale, this is done by dissolving alloying agents in the metal matrix (a procedure known as solid solution hardening).

It increases tensile strength also. Hardness, hardenability and resistance to wear. It decreases tendency toward scaling and distortion. It increases the rate of carbon-penetration in carburizing.

<h3>How to make Alloy? </h3>

Alloys are made by mixing two or more elements, at least one of which is a metal. This is usually called the primary metal or the base metal, and the name of this metal may also be the name of the alloy.

To know more about Alloy please click here: brainly.com/question/716507

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1 year ago
Give three reasons why you might have a situation in which bacterial colonies were found on the first section of a streak plate,
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Hi. You have not shown the sections this question refers to, nor have you provided more information about those sections. This makes it difficult for your question to be answered. However, I will try to help you as best I can.

Generally speaking, we can consider that there was no growth of bacterial colonies in sections 2 and 3, because, for some reason, the bacteria was not inoculated in sections 2 and 3. What could also have happened, is that the bacteria in the sections 2 and 3 were eliminated, but the bacteria from section 1 managed to survive and form colonies.

Another possibility is that after inoculating the bacteria in section 1, you didn't handle the bacteria correctly in the other sections, leaving that bacteria to dry out and die.

Finally, the culture media in sections 2 and 3 could be inappropriate for bacteria to develop and form colonies.

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Which of the following is NOT a major characteristic used to identify minerals? a. hardness c. density b. magnetism d. luster Pl
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Sink to the bottom because it is more dense than the water.
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3 years ago
1.True or false? Gametogenesis is the same as meiosis?
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1. False. They are similar, though.

meiosis- A kind of cell division involving having the chromosome number. It is responsible for genetic recombination.

Gametogenesis- It's the process when gametes or germ cells are produced in an organism. They undergo meiosis to form gametes.

2. Spermatogenesis- happens in the testes of males. 4 gametes are produced. Spermatogenesis involves a metamorphosis stage called spermiogenesis. Spermatogenesis produces small, motile spermatozoa

Oogenesis- takes place in the ovary in a female. 1 gamete produced. in oogenesis there is no metamorphosis stage. In oogenesis the ovum is spherical, and isn't motile and is bigger with more food reserves and cytoplasm.

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3 0
2 years ago
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