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kumpel [21]
2 years ago
14

What is the first form of chemical digestion that food encounters when entering the digestive system? A.molars B.pepsin C.saliva

D.tongue
Biology
1 answer:
Archy [21]2 years ago
4 0

Answer:

Chemical digestion actually starts in the mouth when our saliva mixes in with the food. So, A. wouldn't really be correct. It's not the molars that are doing the chewing, but rather your jaw muscels. I don't even know what pepsin is... <u>C. would probably be your best bet because it's your saliva that breaks down your food and helps you chew it.</u> And D. your tongue just helps to move the food around...

Explanation:

Hope this helps you!!!

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4 years ago
Which statement correctly describes metabolic reactions? Intermediary metabolism breaks down material and transforms fuels into
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Answer:

Catabolic processes break down material and transforms fuels into cellular energy, whereas anabolic processes require energy for biosynthesis.

Explanation:

Metabolism is a constructive and destructive process which occurs in the body of living organisms. There are two types of metabolism i. e. catabolism and anabolism. Catabolism is a destructive process in which food molecules are broken down into simpler substances for the production of energy while anabolism used this energy for the formation of new cells and muscles etc.

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Why is the relationship between surface area and volume central to many cellular processes?
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6 0
3 years ago
Natural selection is an evolutionary mechanism by which:.
Romashka-Z-Leto [24]
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3 0
3 years ago
Read 2 more answers
3
Volgvan

Answer: :Total distance to be travelled = 4.4 km

= 4400 m

Diameter of wheel = 70 cm = 0.7 m

Radius of wheel= 0.7 / 2 m

Circumference of wheel = 2 * pi *r

= 2* 22*0.7 / 7* 2

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= 2.2 m

No. Of revolutions = Total distance / Circumference of wheel

= 4400 / 2.2

= 2000

Explanation:

3 0
3 years ago
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