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3 years ago

Gtpase activity is important in the regulation of signal transduction because it

Biology

1 answer:

laila [671]3 years ago

4 0

Answer:

It responses when cell surface receptors are activated especially trans membrane receptors such as taste, smell and vision.

Explanation:

GTPases are a large group of hydrolase enzymes that link to the nucleotide guanosime triphosphase and hydrolyze it to guamosine diphosphate.

Signal transduction is the process whereby a chemical or physical signal is transmitted using a cell as series of molecular events or activities mostly protein Phosphorylation catalyzed by protein kinases which are finally resulting in a cellular response. Receptors are seen as proteins which can sense stimuli even though most times, sensors are used.

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When a neuron isn't being

pashok25 [27]

Correct option is A)

There are electrical and concentration gradients in neurons that induce the sodium ions to enter the cell. The resting potential is maintained because the channels for sodium ions are closed. The membrane remains impermeable to sodium ions in the rest state. The membrane is more permeable to potassium passage. The potassium ions leak through the membrane at a greater rate than sodium enters. There is loss of positively charged ions from the inner part of the cell membrane. The inner part of the membrane carries a relatively more negative charge than the outer part of the cell membrane.

Thus, the correct answer is option A.

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2 years ago

Read 2 more answers

The ductus arteriosus allows fetal blood to move from the

AnnZ [28]

The ductus arteriosus allows fetal blood to move from the pulmonary trunk into the aorta. The ductus venosus on the other hand is a fetal vessel that transports blood from the umbilical vein to the inferior venacava. Ductus arteriosus is a blood vessel connecting the main pulmonary artery to the proximal descending aorta. It allows most of the blood from the right ventricle to bypass the fetus's fluid-filled non-functioning lungs.

4 0

3 years ago

Ent var

jok3333 [9.3K]

Answer: Oxygen

Explanation:I hope it helps . i have breifly explained it .

Oxygen gas is one of the products of photosynthesis.

Which reactant is the source for oxygen gas and how is it released?

A .

Water, released when sunlight splits it into oxygen and hydrogen ions

B .

Glucose, released when glucose is broken down into carbon dioxide gas, oxygen gas and water

C .

Carbon dioxide, released when sunlight splits it into carbon and oxygen gas

D .

Electrons, released when they strike the chloroplasts

Green plants capture energy and convert it into chemical energy by the process known as photosynthesis. During photosynthesis, carbon dioxide and water are transformed into simple carbohydrates and oxygen is liberated into the atmosphere.

light

6CO2 + 12H2O ----------------> C6H12O6 + 6O2

chlorophyll

Water is also used as a source of hydrogen required for reduction of carbon dioxide to form carbohydrate.

Water is oxidised in presence of light and chlorophyll. Hydrogen is removed from water and oxygen is released as follows:

light

4‎H20 ---------------> 2‎H20 + 4H+ + 4e− + O2

chlorophyll

or,

2‎H2O ----------------> 4H+ + 4e− + O2

Hence the source for oxygen gas is water and it is released when water splits in the presence of sunlight into oxygen and hydrogen ions.

So, the correct answer is 'Water, released when sunlight splits it into oxygen and hydrogen ions'.

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3 years ago

How do ciliates move?

Scilla [17]

Protozoans that Move with Cilia. These protozoans are called Ciliates and have hundreds of tiny cilia which beat in unison to propel them through the water. ... In addition to locomotion, the Paramecium and other ciliates like the Stentor use cilia to sweep food down into their central channel or gullet.

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3 years ago

What statement is true regarding the nervous and endocrine systems?

almond37 [142]

Answer:

The nervous system and the endocrine system are both necessary to maintain homeostasis and keep the human body alive.

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2 years ago