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Nookie1986 [14]
2 years ago
10

Does the stomach only does chemical digestion to break down food?

Biology
1 answer:
bonufazy [111]2 years ago
8 0
In the stomach, food undergoes chemical and mechanical digestion. Peristaltic contractions (mechanical digestion) churn the bolus, which mixes with strong digestive juices that the stomach lining cells secrete (chemical digestion). As food travels from your mouth into your digestive system, it's broken down by digestive enzymes that turn it into smaller nutrients that your body can easily absorb. This breakdown is known as chemical digestion.
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Explain how the invention of the motor vehicle has been both beneficial and harmful?
natulia [17]
It is harmful because motor vehicles spit out gas and like fumes. That can lead to pollution in the air.

It is beneficial because it helps people get to places they need to get to quicker
8 0
3 years ago
In algae, cyanobacteria, and plants, chlorophyll a absorbs all colors of light except for
kakasveta [241]
B. Green


Chlorophyll is found in and around the photosystems embedded in the thylakoid membrane of the chloroplasts.

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<span>Since the chlorophyll is insided the chloroplast which is inside the cytoplasm, it is safe to say that the chlorophyll of the green algae is spread throughout the cytoplasm of its cells.</span>
4 0
3 years ago
Read 2 more answers
Does the distribution of bases in sea urchin DNA and salmon DNA follow Chargaff’s rules? a) Yes, because the %A approximately eq
MArishka [77]

Answer:

A. Yes, because the %A approximately equals the %T and the %G approximately equals the %C in both species.

Explanation:

According to Chargaff's rule, in all cellular DNAs, the number of adenosine residues (A) is equal to the number of thymidine residues (T). And the number of guanosine residues (G) is equal to the number of cytidine residues (C). Therefore, the sum of the purine residues equals the sum of the pyrimidine residues (A+ G= C+ T). It is based on the fact that a purine base always pairs with a pyrimidine base in a double helix DNA.

Chargaff’s rule is followed in all the double-helical DNA molecules irrespective of the species. In DNAs of sea urchin and salmon, the percentage of adenine is equal to that of the thymine and the percentage of guanine is equal to that of the cytosine. Therefore, Chargaff's rule is followed.

3 0
3 years ago
Type 0 blood indicates what about the presence or absence of antigens and antibodies
Morgarella [4.7K]
<span>If you belong to the blood group 0, you have no A or B antigens on the surface of your red blood cells but you do have A and B antibodies in your blood plasma.</span>
3 0
2 years ago
Which of the following is not correct about diffraction?
kotykmax [81]

Answer:

Diffraction occurs just with electromagnetic waves.

Explanation:

8 0
3 years ago
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