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yan [13]
3 years ago
11

What unique features of veins help move blood back to the heart?

Biology
1 answer:
hram777 [196]3 years ago
8 0
They have valves that give it a pumping effect so that it can pump blood
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Which statement explains how ATP and its phosphate groups are related to the energy that is used in plant processes?
Ksju [112]

Answer;

ADP gains a phosphate group to create ATP, which stores energy for making sugars.

Explanation;

-ATP is a molecule that carries energy within cells. It is the main energy currency of the cell, and it is an end product of the processes of photophosphorylation (adding a phosphate group to a molecule using energy from light), cellular respiration, and fermentation.

-ATP is the main carrier of energy that is used for all cellular activities. When ATP is hydrolyzed and converted to adenosine diphosphate (ADP), energy is released. The removal of one phosphate group releases 7.3 kilocalories per mole, or 30.6 kilojoules per mole, under standard conditions.

8 0
4 years ago
Which of the following is true about scientific theories?
melamori03 [73]

Answer:

Explanation:

It certainly isn't the last one. A theory is close to a guess. It fits all the known facts, but there is usually something missing. If someone figures out what is missing, usually by experiment, then the theory become a fact.

The rest of them (1 2 an 3) can all be true. 3 is the least viable. You have to be able to come up with a counter example to reject a theory.

I'm not sure about 2. New phenomena can still be part of current theories. Reluctantly, I wouldn't choose 2 because

1 is the best answer of a very poor lot. Do not be surprised if you use it, that it turns out to be wrong.

5 0
3 years ago
Anyone wanna ta.lk to me bc i bo..red
Irina18 [472]

Answer:

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4 0
3 years ago
Read 2 more answers
if you can set up an experiment and the results do not support your hypothesis what should you conclude
LiRa [457]
Either you have made error in your experiment or you might have wrong hypothesis.
7 0
3 years ago
You know that one cell produces four daughter
Usimov [2.4K]

Answer:32

Explanation:

U would multiply 8×4=32 so 8 cells produce 32 daughter cells

4 0
3 years ago
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