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ratelena [41]
3 years ago
14

Digestion begins when__

Biology
2 answers:
olchik [2.2K]3 years ago
7 0
1-The esophagus passes food to the stomach
Rus_ich [418]3 years ago
4 0

Answer:

Down in the explanation :)

Explanation:

My guess is number 1: The esophagus passes food to the stomach, but I'm not sure if I'm right. Hope this helped!

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How is the end product of mitosis different then the end product in meiosis
zzz [600]

Answer:

2 diploids

Explanation:

Meiosis ends in four haploid daughter cells (which are similar)

and mitosis ends in 2 diploid sister cells (which are genetically identical)

hope that helps :) have a great day!

8 0
3 years ago
Which solution would most likely cause a plant placed in it to become firmer and more rigid?
harina [27]
The appropriate response is hypotonic. Plant cells are encased by an unbending cell divider. At the point when the plant cell is set in a hypotonic arrangement, it takes up water by osmosis and begins to swell, yet the cell divider keeps it from blasting. 
On the off chance that a plant cell is set in a hypertonic arrangement, the plant cell loses water and subsequently turgor weight by plasmolysis: weight declines to the point where the cellular material of the cell peels far from the cell divider, leaving holes between the cell divider and the film and influencing the plant cell to shrivel and fold.
6 0
3 years ago
Read 2 more answers
Can someone help me please
coldgirl [10]

Answer:

C

Explanation:

It experiences more evaporation due to the ocean being around 83 degrees farenheit

3 0
3 years ago
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Which of the following is a living factor in an ecosystem that could limit the size of a raccoon population?
Gennadij [26K]

Answer:

what are the options

the only thing i can think of without seeing the options is Competition from other animals.

Explanation:

5 0
3 years ago
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What is photosystem 1 and photosystem 2 and what do they do? What are the steps ?
lesantik [10]

P I and PII are proteic compounds present in the thylakoid membrane that contain about 300 chlorophyll molecules each.

<h2><em><u>Step I</u></em></h2>

First of all light with a wavelength of 690nm is absorbed by P II. The light excites an  electron that leads to the photolysis of water(H2O--->2H+ +2e- + 1/2O2). The two electrons released go into the electron transport chain. The second compound in electron transport chain is plastoquinone that is reduced when it accepts electrons then oxidised when it loses them to P I. The next two compounds are cytocromes  that make  hydrogen protons  go inside the thylakoid when they recieve the electrons.(I will mention what happens to the  H+  in the second step). The next compound in the electron transport chain is a compound that contains Fe and S. The electrons finally reach the last step: Reduction of NADP+ to NADPH+H+.

<h2><em><u>Step II</u></em></h2>

In the second step is ATP synthesis. Hydrogen protons accumulate inside  the thylakoid membrane. An electrochemical gradient is formed. The protons can leave the thylakoid according to this gradient through an enzyme.

When the protons flow through , it turns ADP into ATP.

<u>To sumarize: the role of P II is O2 production through photolysis and ATP synthesis(indirectly) The role of P I is NADPH+H+ synthesis.</u>

<em><u /></em>

3 0
3 years ago
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