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Semenov [28]
2 years ago
9

Contraction of atria

Biology
1 answer:
yaroslaw [1]2 years ago
4 0

Answer:

Atrial contraction, or “atrial kick,” occurs at the end of diastole just before the closing of the mitral valve and after passive flow has reached the diastasis. Normally, greater than 75% of flow occurs during the passive portion of diastole.

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Factors that remain constant from experiment to experiment are the
alexandr402 [8]

Answer:

Factors that remain constant from experiment to experiment are the constants.

Explanation:

A constant in an experiment is also known as a <em>control variable</em>. It is the part of an experiment that must stay the same in order to validate the experiment. If the constant were to change, the results would be skewed and therefore false.

i.e. you want to test the rate of growth of lima bean plants in different types of lighting. You believe that a lima bean plant that grows in yellow will grow faster and stronger than a lima bean plant that grows in blue or red light.

In this experiment, the constant would be the lima bean plant. You cannot change the type of seed or else your experiment is invalidated. If you tried to use a sunflower seed in the blue lighting and a tomato seed in the red lighting, your results would be invalidated and skewed.

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3 years ago
Name the structures of the female duct system and describe the important functions of each
NISA [10]
The female duct system is composed of the following organs:
a. Fallopian tubes - this is like a bridge that serves as a passage way for eggs from the ovaries to be delivered to the uterus. 
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c. Uterus - This is where the mature ovaries begin to develop and start to form new life.  
5 0
3 years ago
Select all that apply.
slava [35]
Both are prokaryotes
3 0
3 years ago
Read 2 more answers
Introns must be removed prior to translation of the mRNA. In addition, eukaryotic transcripts (mRNA) have to undergo two more st
Ivan

Eukaryotic transcripts (mRNA) have to undergo capping and splicing before it can be translated.

<h3>RNA processing:</h3>

1. An RNA transcript is first produced in a eukaryotic cell as a pre-mRNA, which needs to be converted into a messenger RNA (mRNA).

2. The RNA transcript is given a 5' cap at the start and a 3' poly-A tail at the end.

3. The process of splicing involves cutting out some RNA transcript segments (introns), then joining the remaining segments (exons) back together.

4. Some genes have the ability to alternate splices, which produces various mature mRNA molecules from the same beginning transcript.

The introns not only do not contain the information necessary to construct a protein, but they also need to be cut off in order for the mRNA to create a protein with the correct sequence. An mRNA with extra "junk" in it will be created if the spliceosome fails to remove an intron, and the translation process will result in the production of the incorrect protein.

Learn more about RNA transcript here:

brainly.com/question/13834206

#SPJ4

6 0
2 years ago
Thermostats transform thermal energy into mechanical energy.<br> True or false
Vlad1618 [11]

Answer:

False

Explanation:

Hope this helps you :)

4 0
2 years ago
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