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ladessa [460]
3 years ago
11

Signal transduction: .

Biology
1 answer:
34kurt3 years ago
4 0

Answer: a) relies on the uptake of an external signal molecule from the cell

Explanation: Signal transduction is known as the transmitting of any signal of a molecule from exterior of cell to interior of cell.This technique is termed as critical is taken care of successful transmission of signal effectively and positive result and reception is done by the cell surface receptors.It is also known as cell signalling. Thus,option(a) is the correct option of all.

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Rebekah is studying a molecule and trying to determine if it is DNA or RNA. Which kind of molecule is she studying? I NEED HELP
Alex

Answer: Rebekah is studying [C-nucleic acids].

Explanation: This is  since both DNA (DeoxyriboNucleic Acid) and RNA (RiboNucleic Acid) contain nucleic acids, as their names show.

6 0
3 years ago
What is the pH of a 0.00125 M HCl solution?
timofeeve [1]

Answer:

pH=2.9

Explanation:

Hello,

In this case, the pH is computed by:

pH=-log([H^+])

Whereas the concentration of hydrogen ions equals the concentration of the acid for strong acids such as hydrochloric acid (HCl) due to its complete ionization in solution, which means that such concentration is 0.00125 M. Thus, the pH turns out:

pH=-log(0.00125)\\\\pH=2.9

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4 0
3 years ago
Some bacteria living in the ocean floor can turn methane (a gas) into food.
Nesterboy [21]

Answer:

Option A

Explanation:

Only an autotrophic species can convert methane into food.  

Deep below the sea, methane and hydrogen sulfide are found in abundance. These gases get mixed into the sea water.  

Autotrophic bacteria containing phosynthetic pigments oxidize these dissolved gases thereby producing food.  

Hence these autotrophic bacteria’s will be considered as producers as they produce food.  

Thus, option A is correct.

3 0
3 years ago
What is a protein channel?
aliya0001 [1]
<span>Protein channels are needed to transport substances because it accelerates the transport process. Very few substances enter or leave cells without being attached to a transport protein. Different types of substances require different types of proteins to transport them. Protein channels transport water or ions downwards and ATP-powered pumps transport molecules or ions upwards. ATP generates energy to transport the molecules upwards. Gravity is used to transport the water molecules downwards. So, in a nutshell, if substances need to be transported from the top of the body downward, the force of gravity is used to transport the substances down. If substances need to be transported upwards, ATP, a coenzyme, is used to generate energy to transport the substance upwards</span>
5 0
3 years ago
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True or False - The four biotic categories are - Animals, Plants, Viruses, and Mushrooms.
kvasek [131]

Explanation:

answer is animals hope you I think answer is animals only

3 0
3 years ago
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