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marissa [1.9K]
3 years ago
8

Which statements are true about molecules?

Biology
2 answers:
TiliK225 [7]3 years ago
5 0
I think is D that what i think
iren [92.7K]3 years ago
3 0

Answer:

They are the smallest unit of an element or a compound. They are a group of atoms that are strongly joined.

Explanation:

I just took the test :D

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The amount of land and ocean needed to support one person is a(n)
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Answer:

Ecological Footprint

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3 years ago
Which of the following statement(s) is/are true regarding the adrenal glands' relationship with the autonomic nervous system?
Studentka2010 [4]

Answer:

The true statements regarding the adrenal glands' relationship with the autonomic nervous system are:

a. The adrenal cortex is an extension of the parasympathetic nervous system.

c. The adrenal glands are strictly nerve tissue.

d. The parasympathetic division stimulates the adrenal cortex to secrete glucocorticoids.

e. The adrenal medulla is penetrated by the fibers of the sympathetic nervous system.

Explanation:

The  levels of the central nervous system which play important roles in influencing the autonomic nervous system include cerebral cortex, hypothalamus, brain stem, and spinal cord.  Usually, epinephrine (adrenaline) and norepinephrine are released into the blood stem when stress or a threat occurs.  This alert serves as a warning signal and defense system.  The purpose is to maintain homeostasis.

4 0
3 years ago
Peat contains acids that can help fight diseases.<br> True<br> False
siniylev [52]

Answer:

false

Explanation:

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5 0
3 years ago
Histamine is a chemical substance released in inflammatory and allergic responses. The histamine H1 receptor on target cells is
grin007 [14]

Answer:

-Histamine binds extracellularly to the H1 receptor.

-When histamine binds to the H1 receptor. the receptor undergoes a conformation change and binds the inactive G protein.

-Once the G protein is active, it binds to the enzyme phospholipase C, activating it.

-Histamine is likely hydrophilic.

When histamine encounters a target cell, it binds extracellularly to the H1 receptor, causing a change in the shape of the receptor. This change in shape allows the G protein to bind to the H1 receptor, causing a GTP molecule to displace a GDP molecule and activating the G protein. The active G protein dissociates from the H1 receptor and binds to the enzyme phospholipase C, activating it. The active phospholipase C triggers a cellular response. The G protein then functions as a GTPase and hydrolyzes the GTP to GDP. The G protein dissociates from the enzyme and is inactive again and ready for reuse.

Explanation:

5 0
3 years ago
Why do farmers plough their field during summer
elena-s [515]

Consequently plant roots will get more moisture with less effort. It also improves soil structure due to alternate drying and cooling and soil aeration which helps in multiplication of micro-organisms. This is the reason that farmers plough their field during summer. These are reasons why farmers plough their fields during the summer.


Hope this helps! :3

~Kana ^^

4 0
4 years ago
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