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nadya68 [22]
3 years ago
5

Which is the best definition of activation energy?

Biology
1 answer:
Nataly [62]3 years ago
5 0
The energy required to bind a substrate to an active site when an enzyme is
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Please help me with this!!! very quick answers plz
Leviafan [203]

The direction of the reaction.

7 0
2 years ago
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Explain the phases of the moon. what are the periods of rotation and revolution?
cluponka [151]

The Moon is the natural satellite of Earth. Its revolution lasts 27.322 days, while its rotation around its axis lasts 27 days. From the Earth's perspective, the Moon seems to have different phases, where it appears as fully lighted, partially lighted, or totally dark. What the Moon appears to be from the Earth depends on how the Earth, Moon, and Sun are aligned in relation to each other. If the Earth is between the Sun and the Moon, the Moon is full, with the reason being that the Sun is lighting up the side that is facing the Earth. If the Moon is between the Earth and Sun, then the Moon can not be seen, it is totally dark, and that is because the side that is facing the Earth is not lighted by the Sun at all. If the Moon is positioned sideways, not being in a straight line with the Earth and Sun, then it appears to be partially lighted, and that is the side that can be seen from Earth that is lighted by the Sun.

5 0
3 years ago
Explain how cells were discovered.
sweet [91]

Answer:

they were discovered by Robert Hooked in 1665. It looked like similar to cellua.

3 0
3 years ago
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Which of the following is a common renewable resource found in deserts
frez [133]

Minerals

Explanation:

Minerals can be found in the cactus and ground and are very resourceful

3 0
2 years ago
Scientists have engineered bacteria to produce human proteins, such as human growth hormone (hGH) used to help treat dwarfism. S
Zigmanuir [339]

Answer:

Bacteria do not possess the tendency to withdraw sequences of introns from a gene, thus, if the gene for the human growth hormone were transcribed, it would translate into a non-functional protein.  

When the expression of a gene takes place in eukaryotes, the budding mRNA comprising introns are removed consequently at the time of post-translational processing to produce mature mRNA. Also, the human growth hormone is produced by the pituitary gland in the form of a pre-hormone comprising a leader peptide of about 20 amino acids in length, which need to get removed post-translationally to produce a mature functional protein.  

Bacteria do not possess the biochemical machinery either to effectively withdraw the leader peptide after translation or to splice out the introns. Thus, when an unchanged human growth hormone is cloned, the bacteria cannot produce the functional human growth hormone.  

8 0
3 years ago
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