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Dafna11 [192]
3 years ago
15

Which of the following occurs in the upper respiratory system?

Biology
1 answer:
Mariana [72]3 years ago
3 0
Head Area: The nose and mouth take in oxygen that goes through the throat and into the lungs. There are 2 ways, but a little flap opens when oxygen comes in and closes right after. This is used so food doesn't get in the wrong way.
Chest Area: Capillaries in the lungs move the oxygen to the heart to pump it throughout the body.
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Answer:

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Explanation:

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3 years ago
Six fingered offspring are formed from normal fingered parents . why?
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<span>Polydactyly in its most common form, is an autosomal dominant mutation. Let's represent the mutation as P and the normal state as +. Thus, if both parents are heterozygous (P+), both would have the mutation (and thus have six fingered). They have 3/4 chances of having a child with the extra digit, 1/4 normal. </span>
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3 years ago
What pulls the chromosomes apart in anaphase?
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Answer:

D. Spindle Fibers

Explanation:

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4 0
3 years ago
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3 years ago
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romanna [79]
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