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allochka39001 [22]
3 years ago
14

How does the structure of the small intestine match its function?

Biology
1 answer:
Ostrovityanka [42]3 years ago
6 0
In small intestine millions of micro villi are present for greater absorbption of digested food.
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1. What causes the autorhythmicity or action potentials of the nodal cells? a. A decrease in chloride permeability b. A gradual
Sveta_85 [38]

Answer:

The correct answer will be option-C

Explanation:

The rhythm of the heartbeat is controlled by the pacemaker of the heart called the sino-atrial node.

The SA node generates action potentials which trigger the contraction and relaxation of the atrium and ventricles. The membrane potential generation initiates by the depolarization of the cell membrane when the L type of Ca⁺² ions opens up and calcium ions enter the cell.

This depolarizes the cell until the potential threshold is reached which lies between the -40 and -30 mV.

Thus, Option-C is the correct answer.

5 0
3 years ago
Suppose a newborn baby was accidentally mixed up in the hospital. In an effort to determine the parents of the baby, the blood t
Sladkaya [172]

Answer:a. Draw Punnett squares for each couple (you may need to do more than 1 square/ couple)

Baby 2 MUST belong to the Browns because Mr. Brown is the only parent with an A allele to

contribute… then the rest works out as follows:

b. To which parents does baby #1 belong? Why? Hint you may want to refer to your Punnett

squares.

Baby 1 must belong to the Smiths, because they are the only ones with the possibility of EACH

having a recessive allele to pass down to the baby, Mr. Brown has type AB blood and therefore

only has the dominant A and dominant B alleles – no recessive allele possible.

Explanation:

6 0
3 years ago
Which of the following statements about forestry education is true?
olya-2409 [2.1K]
I think you forgot to give the options along with this question. I have researched with the question and have found the options as well. Hope it helps you in your study. Among the choices that i have come up with, the option that says that temperate deciduous forests are less open than tropical rain forests.
4 0
3 years ago
Read 2 more answers
10. A fish is characterized by the presence of
egoroff_w [7]

Answer:

d

Explanation:

Fishes are aquatic vertebrates having scales, pharyngeal gill slits and paired fins. ... Most fish are ectothermic ("cold-blooded"), allowing their body temperatures to vary as ambient temperatures change. fishes have scales that covers the skin of fishes. Thus, the correct answer is option D.

3 0
3 years ago
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A glass of ice water is placed in a warm room. Over time, the ice melts.
NikAS [45]

You forgot to provide the statements

4 0
3 years ago
Read 2 more answers
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