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Art [367]
3 years ago
8

Kinetic energy is the __________.

Biology
1 answer:
levacccp [35]3 years ago
3 0
A. energy of motion.
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What second messenger most directly causes calcium ions to be released from intracellular stores?
NemiM [27]

Answer: adenylyl cyclase inositol triphosphate mainly known as IP3 causes the release of Calcium ions directly from the inracellular stores and causea contraction.

Explanation:

IP3, inositol phosphate is a second messenger a signaling molecule. It is made by hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2), a phospholipid that is located in the plasma membrane, by an enzyme phospholipase C.

IP3 binds to the calcium channels and opens Ca2+ channels that are embedded in the ER membrane, releasing Ca2+ into the cytosol. Calcium ions released may cause contraction and regulate the Ca2+ channels in the membranes.

6 0
3 years ago
The letter D represents a _______ (which are three based on the mRNA).
skad [1K]

Answer:The genetic code is based upon the reading of how many bases at a time? A. one. B. two. C. three. D. four.

8 0
3 years ago
What is the transport of material out of a cell by means of a sac or vesicle that first engulfs the material and then is extrude
Iteru [2.4K]
Exocytosis occurred, where a vesicle or liposome is transported through the cell's cytoskeleton to the cell surface membrane to fuse with it, releasing the contents from within the vesicle and into the extracellular environment.
It does not matter if the vesicle or liposome had previously fused with a lysosome previously.
So long as it is a vesicle/liposome, which has a phospholipid bilayer membrane (I.e. the same as the cell surface membrane), and fusion occurs, it is exocytosis.

Hope this helps! :)
5 0
3 years ago
Planet C has a tilt of zero degrees. What seasonal changes would be expected on this planet? Extreme temperature changes between
12345 [234]
<span>No change in temperatures between seasons. Tilt is the angle between the direction of positive pole and the normal to the orbital plane. Seasons occur due to the tilt of axis. If there is no or zero degree tilt there will be no season. Season means changes in temperature. the amount of sunlight received remains same throughout the year which causes for no change in temperature and hence no season.</span>
8 0
3 years ago
Read 2 more answers
]Which of these statements best explains the origin of life on Earth?
Flauer [41]
The statement which best explains the origin of life on Earth is that r<span>eproducing molecules evolved into living molecules by biological processes.
RNA is the precursor of all life on Earth, and today's life descends from RNA world.
</span>
8 0
3 years ago
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