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snow_tiger [21]
2 years ago
7

The PCR technique requires a DNA polymerase from an organism that can endure high heat, such as Thermus aquaticus. What step of

the protocol makes the heat-stability most necessary?
Biology
1 answer:
DENIUS [597]2 years ago
5 0

Answer:

Extension

Explanation:

Polymerase chain reaction is given by Kary Mullis and it contains three steps denaturation, annealing, and extension. In denaturation, the temperature is raised to 96° c so that the DNA can denature.

In annealing, the temperature gets reduced to 55°c so that the primer can bind to the complementary sequence. In extension, Taq polymerase is used to extend the new strand.  

This enzyme is isolated from thermophilic bacteria and the temperature here is raised to 72°c so that the enzyme can extend the primer and make the complementary strand. So the right answer is extension.

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3 years ago
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A group of plants cells was exposed to radiation, which damaged the chloroplasts and caused them to lose function. If the mitoch
melisa1 [442]

Answer: <u>The Plant Cell would die</u>

<u />

Explanation: Although the <u>Mitochondria</u> is unharmed the <u>Plant Cell</u> still needs the<u> Chloroplasts</u> because they are responsible for <u>Photosynthesis </u>which gives the plant energy, And without the Chloroplast ,Photosynthesis cannot be started

5 0
3 years ago
Match the following terms and definitions. 1. an organism that can make its own food commensalism 2. a symbiotic relationship be
Dmitriy789 [7]

Terms matched with the right definitions.  

1. An organism that can make its own food – Autotroph

2. A symbiotic relationship between two organisms in which one species benefits and no effect is apparent to the other species – Commensalism.  

3. A cell that has a membrane-bound nucleus and/or organelles as its major characteristic -Eukaryote.  

4. The study of organisms that are too small to be seen with the naked eye - Microbiology.  

5.  A disease-causing organism - A germ pathogen.  

6. A one- or few-celled organism with chromosomes; may have characteristics of both animals and plants – Protist.


An autotroph is an organism that produces its own food from simple substances available in its environment. Autotrophs usually use inorganic chemical reactions or light energy in producing their food and are usually the producers in a food chain. Examples of autotrophs are plants and algae.


Commensalism is a type of relationship between organisms of two species where one organism benefits from the relationship and the other organism is not affected by it (neither benefits nor harmed).



5 0
3 years ago
32. Cold air takes up ___________ space than warm air
laila [671]

Answer:

less

Explanation:

less

6 0
3 years ago
Select the living organisms that will decrease as a result of the loss of coral in the food web (Other answers besides the ones
kirill [66]

Answer:

Parrotfish

Triggerfish

Butterfly fish

Explanation:

these three are the ones that eat the coral directly

this is why they are going to be the ones who are the most affected said the coral dies out

Hope this helps!

3 0
3 years ago
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