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Yuliya22 [10]
3 years ago
9

Certain cells have protein channels on them to transport substances across the cell membrane This kind of transport is referred

to as
Biology
1 answer:
Dimas [21]3 years ago
4 0

This is called active transport. The proteins use ATP to transport stuff in and out of the cell.

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How many people are diagnosed with skin cancer in the U.S. annually
fiasKO [112]

Current estimations are that one in five Americans will develop skin cancer in their lifetime. It is estimated that approximately 9,500 people in the U.S. are diagnosed with skin cancer every day. Which adds up to over 3.3 million persons each year.

Hope this helps! :)

4 0
3 years ago
When you examine fluid that you have drawn from a blood vessel in someone's arm, you find that it is relatively high in carbon d
ziro4ka [17]

Answer:

The given blank can be filled with a venule.

Explanation:

A small blood vessel in the microcirculation, which connects the capillary beds to the veins is known as the venules. Various venules combine to form a vein. The walls of a venule are formed of three layers, that is, the inner endothelium formed of squamous endothelial cells, a middle layer of elastic and muscle tissue, and an external layer formed of fibrous connective tissue.  

The size of a venule ranges from 8 to 100 micrometers in diameter and are produced when capillaries come in close association. A venule refers to a small blood vessel that permits the deoxygenated blood high in carbon dioxide and waste products to return from capillary beds to the bigger blood vessels known as veins.  

4 0
3 years ago
A cell's organelles are suspended within its _____.
rosijanka [135]
D) the cytoplasm hope this is right
3 0
2 years ago
In the marine mollusk, Aplysia, serotonin binds to a G-protein-coupled receptor and activates a Gs subunit. The resulting activa
dem82 [27]

The serotonin binds to a G-protein -coupled receptor and activates a G-subunit . This results in activation of PKA and closing of the potassium channels. This will subsequently decrease the influx of potassium ions into the cell, and lead to depolarization of the cell. This changes the membrane potential of the cell.

Aplysia are sea slugs which fall under the category of mollusks. Serotonin is a hormone which is responsible for the transfer of electrical signals from the brain to different parts. In this particular mollusk, serotonin was studied to find that it is an essential neurotransmitter that is responsible for the maintenance of synaptic plasticity in the neurons. Synaptic plasticity is the feature which is essential for the communication of neurons. This is the modification which occurs at the synapses during the transmission of synapses. Without this activity, the transmission of signals would be impossible.

Learn more about depolarization here-

brainly.com/question/8438145

#SPJ4

4 0
2 years ago
What are the two types of quantities scientists consider when examining something?
Luda [366]

Answer:

The two types of quantities scientists consider when examining is Scalars and Vectors

8 0
1 year ago
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