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skelet666 [1.2K]
2 years ago
11

Using what you have now learned about temperature and pressure at high altitudes in the troposphere, why do you think that helic

opters do not fly to the top of Mount Everest?
Biology
1 answer:
gregori [183]2 years ago
6 0

Answer:

The air would be too thin for most helicopters to create enough lift to remain airborne. And if somehow a helicopter did make it up there, landing wouldnt be easy.

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Scientists have found 2 frameshift mutations in patients with Cystic fibrosis. This condition is very serious and without the pr
Makovka662 [10]

Answer:

b

Explanation:

6 0
3 years ago
Human proteins can be produced by cells in the milk-producing mammary glands of transgenic mammals if the regulatory sequence of
natta225 [31]

Answer:

It is important to use the regulatory sequence of a milk gene when constructing a recombinant gene used to produce a human protein secreted in milk because<em> it is capable of increasing or decreasing the expression of specific genes within an organism.</em>

Explanation:

<em>Regulatory Sequence</em> is<em> a segment of a nucleic acid molecule</em> which is capable of increasing or decreasing the expression of specific genes within an organism. Regulation of gene expression is an essential feature of all living organisms and viruses.

6 0
3 years ago
What do the tympanic membranes do for the frog?
BabaBlast [244]
A tympanic membrane, (is also called a tympanum), is the circular patch of skin directly behind the frog’s eye that we commonly call an eardrum. It functions much like our’s does.

The tympanum sends sound waves to the middle of the war then to inner ear, which allows a frog to hear both in the air and below water.
7 0
3 years ago
Summarize why the pyramid of energy can never be inverted like the pyramids of numbers and biomass can.
Art [367]
Base on one of the Law of Thermodynamics, the amount of available energy decreases whenever energy is changed in form (which includes a transfer from one trophic level to another). So, as we go from the first trophic level to the top trophic level, the amount of available energy becomes less and less. 
4 0
3 years ago
Read 2 more answers
Another application of the Polymerase Chain Reaction (PCR) is to screen samples for the presence of viruses. For example, rememb
yuradex [85]

Answer:

For the 1st part, the correct answer is option C.  

In a polymerase chain reaction, the amplification of DNA template takes place not RNA. So, prior to going into the process, there is a need to initially convert RNA into DNA with the help of an enzyme reverse transcriptase.  

For the 2nd part, the correct answer is option D.  

The suitable temperature for human DNA polymerase is 37 degrees Celsius, and it gets denatured at greater temperatures. As PCR runs at exceedingly high temperature like 95 degrees Celsius, only Taq DNA polymerase can withstand the temperature. Thus, normal DNA polymerase cannot be utilized in the PCR reactions.  

3 0
3 years ago
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