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Sophie [7]
3 years ago
12

Galaxies such as the Milky Way are held together by _________. A. gluons B. gravity C. dark matter D. dark energy

Biology
2 answers:
yulyashka [42]3 years ago
7 0
The answer is b, gravity. 
Ivan3 years ago
5 0
I can second that the answer is B gravity I now much about this topic
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Blood is normally slightly basic, with a normal pH range of about 7.35 to 7.45. Usually the body maintains the pH of blood close to 7.40. A doctor evaluates a person's acid-base balance by measuring the pH and levels of carbon dioxide (an acid) and bicarbonate (a base) in the blood.

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If chromosomes unfolded stuff how is transcription enhanced
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Read 2 more answers
According to the Merck Veterinary Manual, the average resting heart rate for a certain type of sheep dog is 115 beats per minute
olga nikolaevna [1]

Answer:

C: H0:μ=115, Ha:μ≠115

Explanation:

In statistics, H0 is null hypothesis otherwise known as hypothesis of no difference. Meaning that there is no difference in the observed data or population

Ha is the alternate hypothesis, meaning there is a significant difference in the observed data or population.

In this case, the normal heart rate is 115 bpm. This represents the standard. The observed mean of 118.2 will be statistically compared to 115.

<em>Hence, the hypothesis of no difference (H0) will assume that the observed mean 118.2 is the same is the standard mean, H0:μ=115 while the alternate hypothesis will assume that 118.2 is significantly different from 115, Ha:μ≠115.</em>

<em>Correct option: C</em>

6 0
3 years ago
1) Label the following terms in the following picture
baherus [9]

Answer:

Enzyme is C

Active Site is B

Product is D

and Protein is A

5 0
3 years ago
Which system runs perpendicular to the myofibril and functions with the triad as a microtransportation network to spread the act
Svetlanka [38]

Answer:

The preferable options will be -

T-tubule system

Explanation:

  • T-tubules or transverse tubules are a part of the skeletal and cardiac muscle membrane systems. They are the cell membrane extensions that can penetrate into the center of those muscles.
  • It contains a large amount of on channels, transporters, and pumps. It allows the transmission of the action potential, frequently. T-tubules also regulates the cellular calcium concentration.
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3 years ago
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