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tia_tia [17]
3 years ago
12

When not enough oxygen is available to cells during rigorous exercise, muscle cells must convert pyruvate to __________ to gener

ate additional ATP.
A) lactic acid
B) NAD+
C) oxygen
D) glucose
Biology
1 answer:
Kipish [7]3 years ago
3 0

The correct answer is: A) lactic acid.

During the exercise, muscle cells use anaerobic respiration in order to make enough energy in the form of ATP. Anaerobic respiration doesn’t require oxygen, but glucose is broken down to produce energy. Glucose is broken down to pyruvate in the process called glycolysis. Next step is convert of pyruvate into lactic acid (or lactate).

During the exercise, the oxygen level in muscle cells decreases, which results in anaerobic respiration of the cells.


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Options: dna, nucleus, cytoplasm, cell membrane, ribosomes
Finger [1]

Answer:

Sorry if I get it wrong but I think

A: Nucleus

B: Cytoplasm

C:Ribosomes

D:DNA

E:Cell membrain

Explanation:

6 0
3 years ago
A test that determines the percentage of erythrocytes in a volume of blood:
Nataliya [291]
Red blood cell count
6 0
3 years ago
A mother, 13 years of age, delivers a low-birth-weight neonate. The neonate is transferred to the neonatal intensive care unit.
Natalka [10]

Answer:

The excessive alcohol consumption of the mother.

Explanation:

Alcohol consumption during pregnancy harms the developing baby, the foetus. This is because alcohol passes from the mother's blood to the baby's blood and this affects the growth of the baby's cell.

This causes severe damage to the cells of the brain and the spinal cord.

FASD - Fetal Alcohol Spectrums Disorder is characterised by growth and developmental problems and it can range from mild to severe.

Example is the baby having small head, narrow eye and behavioural problems later in life.

7 0
3 years ago
Read 2 more answers
What are the communication skills??
Anna71 [15]

Answer:

presentation, active listening, nonverbal communication, giving/taking feedback,

Explanation:

Some of the most important communication skills for any job are presentation, active listening, nonverbal communication, giving/taking feedback, and others. Improve your communication skills by learning how to listen, noticing nonverbal cues, and practicing oral communication

i pick Hobby

Hope This Helped

6 0
2 years ago
A scientist was studying bones from an individual who died thousands of years ago. Which portion of the bones was the scientist
ludmilkaskok [199]

Answer: Minerals

Explanation: The body decomposes and after about 40 to 50 years bones are mostly brittle and dry with no traces of flesh. After thousands of years bones also disintegrate (decay) leaving brittle mineral frame. The life of bones is determined by the soil type its buried in, nuetral soils takes longer then acidic soil condition.

In this case osteocytes(bone cells) are the first to decompose followed by the cartilage and bone marrow, leaving behind mineral traces that scientist can study after thousand years.

7 0
3 years ago
Read 2 more answers
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