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Yuri [45]
3 years ago
14

The cephalic stage of digestion

Biology
2 answers:
Dafna1 [17]3 years ago
6 0
It begins before food is eaten, the answer is C.

bagirrra123 [75]3 years ago
6 0
C) prepares the mouth and stomach for the arrival of food
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Phosphorus is required to synthesize the deoxyribonucleoside triphosphates used in DNA replication. A geneticist grows some E. c
Harlamova29_29 [7]

Answer:

<h2> After one round: one strand of DNA  will contain radioactive 3232P, while the other strand  will not contain any radioactive phosphate. </h2><h2> After two rounds:  here 50%  of DNA will have 3232P in both strands, while 50% will contain 3232P in one strand and nonradioactive in the other strand. </h2>

 

Explanation:

1. In the initial sample which is immediately removed after addition of radioactive isotope of phosphorus ( 3232P), hence there is  no incorporation of 3232P into the DNA because replication in the medium containing 3232P has not yet occurred.  

2. After one round of replication in  radioactive isotope of phosphorus ( 3232P) containing  medium, here  only one newly synthesized strand of DNA molecule will contain 3232P, while the other strand  will not contain any  radioactive isotope of phosphorus ( 3232P),  because DNA replication occurs in semi-conservative way.

3. After two rounds of replication in medium which contains radioactive isotope of phosphorus ( 3232P), here 50% of the DNA molecules will have  radioactive isotope 3232P in both strands, while the rest 50% will contain 3232P in only one strand and nonradioactive phosphorous in the other strand.

4 0
3 years ago
Primary producers are the basis of any food chain. Sunlight powers photosynthesis which results in the production of chemical en
I am Lyosha [343]

Answer:

A) Chemosynthesis

Explanation:

Organisms, such as bacteria and other living organisms, use chemosynthesis when there is an absence of light. They use inorganic chemicals to produce energy through reactions.

8 0
3 years ago
Which of the following are independent
sesenic [268]
The second and third one I believe
3 0
3 years ago
Blank is the pentose sugar on RNA. please help me!!!!
Brut [27]
The pentose sugar on RNA is called ribose. (a trick to remember it is that the "R" in RNA stands for ribo)

Hope this helps :)
4 0
3 years ago
Which of the following describes the amount of organic material that is available for transfer to the next trophic level after s
asambeis [7]

Answer:

Net Primary productivity

Explanation:

In an ecosystem, primary productivity is a term used for autotrophic organisms. It is the process by which these organisms like plants, green algae etc. make their own food using inorganic sources. However, they do not utilize all the matter they make from this process.

The NET PRIMARY PRODUCTIVITY (NPP) is the amount of organic material that is available for transfer to the next trophic level after subtracting material used for respiration. This means that NPP is the amount available after removal of the one to be lost via respiration i.e. NPP = GPP - respiration.

3 0
2 years ago
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