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lina2011 [118]
2 years ago
14

6. Adolescent females often require additional amounts of iron in their diet. Explain why.

Biology
1 answer:
Oxana [17]2 years ago
6 0
Our blood contains a large proportion of the iron in our bodies. Because women lose blood during a period, they also lose iron. This means that they need more iron in their diet to counteract this.
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Please help
Ludmilka [50]
A memory B cell is kinda of how it sounds it has a memory of what your body has fought before such as a virus and can stimulate a response quicker then the first time you encountered it. 

If you lack memory B cells your body doesn't built up the same immune response when you come into contact with the virus again.

"Vaccination would prevent further disease" Incorrect, a vaccine lets you build up memory cells to combat the disease if you lack them you cannot build up a defense.
"Vaccination would not prevent further disease" Correct, a vaccine can be a dead version of a virus or parts of a virus that shows your body what to respond to quickly in the future. If you body cannot make memory b cells it wouldn't help to use a vaccine. Your body wouldn't keep a memory of it being bad.
"You would not produce antibodies" Even if your body does not remember a particular virus it does produce antibodies to combat it just not as quick or efficiantly as something it has come into contact with before and produced memory cells.
"You would over produce histamine" Incorrect, different process for that histamine.
6 0
3 years ago
Evolutionary theory has become the central organizing principle of biological science. Could this scientific theory ever become
sveta [45]

The answer requires looking at the meaning of the words 'theory' and 'law'. The formal definition of a theory is that it is a comprehensive explanation of a observed phenomenon supported by a lot of evidence. Law is a fact that is bound to be true in nature, example Newton's second law. However, a theory is subjected to continuous refinements based on the several new findings that happen with time. These refinements make the theory appear incomplete. As with the theory of evolution, a lot of research work is being put to understand the complex phenomenon of genetic inheritance of traits of behaviour. Unless there are evidences from nature for all the aspects of evolution in theory, it'll remain a theory and not become a law.

Answer is A) Yes, if scientists decide that enough evidence supports the theory.


6 0
3 years ago
Which step in transcription occurs first?
asambeis [7]
Which step in transcription occurs first?

C. RNA polymerase attaches to the promoter.
8 0
3 years ago
Arrange the following sequence of events in the reproduction of flowering plants:
Varvara68 [4.7K]

Answer:

Pollination →Fertilisation → seed formation → dispersal of seed → Germination

Explanation:

This is the correct sequence of events in the reproduction of flowering plants.

5 0
3 years ago
what will happen to the picture when a car with a blowing horn is approaching according to the Doppler effect​
Ganezh [65]

Answer:

The horn will sound like it is at a higher pitch.

Explanation:

Th sound waves are closer together at the front of the car because the car is traveling forward.

6 0
2 years ago
Read 2 more answers
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