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Elenna [48]
3 years ago
7

How long are food chains?

Biology
2 answers:
vodomira [7]3 years ago
6 0

it varies with ecosystem

Ann [662]3 years ago
3 0
It varies with ecosystem
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At first glance, fermentation of pyruvate to lactate appears to be an optional add-on reaction to glycolysis. After all, could c
Serhud [2]

Answer:

No, glycolysis can not be continued without fermentation in the absence of oxygen.

Explanation:

In the absence of oxygen, cells perform fermentation to oxidize NADH into NAD+. NAD+ is required during the conversion of glyceraldehyde 3 phosphate into 1,3 bisphosphoglycerate. Fermentation reduces pyruvate and oxidizes NADH so that the NAD+ supply is continued to ensure continuity of glycolysis.

If fermentation does not occur under anaerobic conditions, cells will accumulate pyruvate and NADH. Glycolysis could not be continued in the absence of NAD+.

8 0
3 years ago
Suppose thymidine labeled with carbon-14 was added to a culture of bacteria and allowed to incubate for 20 minutes (one generati
Yanka [14]

Answer:

One strand of all the isolated DNA double helices would have C-14 labeled thymidine.

Explanation:

DNA replication is a semiconservative process which means that each newly formed DNA double helix contains one parental strand and one newly formed strand.

Since the medium has thymidine labeled with C-14, all the newly formed strands formed during DNA replication would have radio-labeled thymidine.

Therefore, by the end of 20 minutes, one out of two strands on each double helix would have labeled thymidine nucleotides.

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3 years ago
What the advantage to animals of storing energy in the form of lipids rather than carbohydrates for long-term energy needs?
nadya68 [22]
Animals storing energy is a long term cause when an animal is wanting another animal their is things that do change in their bodies and it can cause them to do theses kinds of things .
5 0
3 years ago
Use of antibiotics in animal feed leads to antibiotic-resistant bacteria because
alexandr402 [8]

Answer:

The correct option is D.

Explanation: The options attached to this question are given below:

A) Bacteria from other animals replace those killed by the antibiotics.

B) The few surviving bacteria that are affected by the antibiotics develop immunity to the antibiotics, which they pass on to their progeny.

C) The antibiotics cause new mutations to occur in the surviving bacteria, which results in resistance to antibiotics.  

D) The antibiotics kill susceptible bacteria, but the few that are naturally resistant live and reproduce, and their progeny repopulate the host animal.

E) The antibiotics persist in soil and water.

Antibiotics are sometimes used in animals to control infections. With time, the microbes that are been targeted with the antibiotics usually develop mutations, which makes the antibiotics to become ineffective, thus, the antibiotics will only be able to kill the susceptible microbes while the ones that have developed resistance will remain and give birth to young ones that are also resistant to antibiotics.

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3 years ago
What is the overall reaction ( equation ) for photosynthesis?
den301095 [7]

Answer:

6CO2 + 6H2O → C6H12O6 + 6O2

Explanation:

5 0
1 year ago
Read 2 more answers
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