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dangina [55]
3 years ago
6

What happened as a result of higher oxygen levels millions of years ago?

Biology
1 answer:
swat323 years ago
6 0

Answer:

A Flowers started to be pollinated by trees.

Explanation:

Hopefully this helps

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Water makes up a large percentage of the body’s cells. For a cell to remain in homeostasis, it should
mario62 [17]

Answer: Osmosis

Explanation:

"Water makes up a large percentage of the body's cells. For a cell to remain in homeostasis, there must be a mechanism to control water changes in the cells. The movement of water from an area of high water concentration to an area of low water concentration is osmosis." Source, Quizlet. https://quizlet.com/350562884/cell-homeostasis-flash-cards/

7 0
3 years ago
Tadpoles must undergo a major metamorphosis to become frogs. This change includes reabsorption of the tail, growth of limbs, cal
nevsk [136]

Answer:

There are many receptors for thyroxine on different target cells (tissues), so its effect can be huge

Explanation:

Target cell for a certain hormone is a cell that have hormone receptor specific for that hormone. There are two main types of receptors on target cell:

  • cell membrane receptors (also called  trans membrane receptors)-usually for peptide hormones, such as insulin
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Hormone binding to the receptor leads to the signal cascade within the cell, which results in cell response.

Receptors for thyroid hormones are nuclear receptors.

4 0
3 years ago
Im stuck! Please help
Mademuasel [1]

When it is winter in the Northern Hemisphere, the Southern Hemisphere faces the Sun more directly and thus experiences warmer temperatures than the Northern Hemisphere. Meaning that the date is June 21- summer

6 0
3 years ago
"A nursing student is critiquing a study for her nursing research class. She feels like the study findings are generalizable to
11Alexandr11 [23.1K]

Answer:

There is consistency of the current study's findings with that found in previous research studies.

8 0
3 years ago
It is a small RNA molecules that interfere with gene expression.
Semmy [17]

Answer:

miRNA ( micro RNA )

Explanation:

The small RNA molecule that interfere with gene expression are miRNA. The miRNA is micro RNA that are non-coding molecules of RNA. These small RNA regulate gene expression after transcription (post transcription).

The miRNA binds to 3' UTR region (untranslated region ) and halt the process of protein production and thereby silencing mRNA.

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