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bazaltina [42]
3 years ago
14

A. What gases were present in Earth's early atmosphere?

Biology
1 answer:
frutty [35]3 years ago
5 0

Answer:

The early atmosphere was probably mostly carbon dioxide, with little or no oxygen. There were smaller proportions of water vapour, ammonia and methane. As the Earth cooled down, most of the water vapour condensed and formed the oceans.

Explanation:

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The nurse begins intermittent oral feedings for a small-for-gestational-age newborn to prevent which occurrence
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<span>The nurse begins intermittent oral feedings for a small-for-gestational-age newborn to prevent Hypoglycemia.</span>
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For Mendel to have postulated the law of independent assortment which of the following reasons had to be valid?
Jobisdone [24]

Answer:

Option (A).

Explanation:

Mendel is known as the father of genetics. He explains the concept of dominance and introduces the law of segregation and law of independent assortment.

The law of independent assortment explains that the segregation of one pair of character is independent on the other character. The law of independent assortment is valid because the trait used by the Mendel are located on different chromosome and does not show the linkage.

Thus, the correct answer is option (A).

4 0
3 years ago
A number of mutations have been described in G proteins that have profound effects on their activity. For example, some mutation
gavmur [86]

Answer:

The answers are :

Explanation:

A. Hidrolyisis- deficient RAS mutant :1. Continual activation of the MAP kinase pathway even in the abscence of signaling molecule, 5.Change in the expression of genes in the absence of the appropriate signaling molecule

C. High GDP affinity RAS mutant: 2.Failure to activate MAP kinase pathway following ligand binding to receptor kinase, 6. Target genes are not expressed even in the presence of signaling molecule

B. Neither: 3. Failure of receptor kinase to dimerize in the presence of ligand, 10. A continuously activated receptor in the absence of ligand

3 0
3 years ago
Plz help ASAP THANKS :)))
Papessa [141]
The answer to question one is B. The answer to question two is D.
7 0
3 years ago
Hormones released by the endocrine system travel in the blood until they find their specific target cell. Group of answer choice
IgorLugansk [536]

Answer:

True

Explanation:

Hormones are released directly into the blood stream.Each hormone synthesized  is specific  to a particular receptor on the target cell. Therefore  the hormone  are activated to produce their effect when they bind with  the cells through the complimentary receptors on the cells.

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2 years ago
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