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lara [203]
3 years ago
13

What distance was used to define the astronomical unit (AU)?

Biology
1 answer:
Aleonysh [2.5K]3 years ago
5 0

The average distance from the sun to Earth

Explanation:

  • Astronomical unit is defined as the the average distance from the center of the earth to the center of the sun.
  • It is represented by AU.
  • The value is equal to a unit of measurement of  149.6 million kilometers.
  • An Astronomical Unit  is approximately equal to  93 million miles (150 million km). It's approximately 8 light-minutes.
  • Astronomical units are usually used to measure distances in solar system.

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Blood flow
horrorfan [7]

Answer:

D. Tricuspid → right ventricle → pulmonary valve → pulmonary circulation

Explanation:

The circulatory system is the system of organs and blood vessels which is associated with the circulation of the blood in the body.

The circulatory system is divided into two portions: the systemic circulatory system (body) and the pulmonary circulatory system (lungs).

The vena cava brings the oxygen-poor blood from the body to the right atrium from where the blood is transferred to the same side of the ventricle controlled by the tricuspid valve (atrioventricular valve).

From the right ventricle, the blood is pumped to the pulmonary artery which transports the blood to the lungs where the oxygen will be exchanged.

Thus, Option-D is correct.

4 0
4 years ago
A phenotypic ratio for a dihybrid cross is predicted to be 9:3:3:1. The experimental values are:
Maslowich
Two traits that we are examining are the color (purple/white) and the smoothness. 
In our sample, we have 135 individuals ( 75 +28+24+8= 135).

Since we know that expected ratio of a dihybrid cross, is <span>9:3:3:1 we can calculate what is the expected values of each phenotype is.

So, for the white wrinkled phenotype, we expect that there will be one-sixteenth of the whole sample ( there are 16 parts of the whole sample 9+3+3+1=16).
So, we multiply the whole sample- 135 with one-sixteenth (or </span>0.0625) and get 8,4375.
When you calculate the values for all phenotypes you get results shown in the attached excel table.
When you have your expected and experimental values you compare them with a chi-square test. (The test determines if the difference between the expected and experimental results is statistically significant).


4 0
3 years ago
Read 2 more answers
A primary healthcare provider decides to omit a treatment that was part of a course of chemotherapy for a client because the cli
jonny [76]
The nurse should explain that myelosuppression is a common side effect of cancer treatments. The healthcare provider should explain to the patient that it is better to reduce or stall the treatment for a while because it would be more harmful to them if they continued. 
4 0
4 years ago
Give an example of a free-living flatworm and a parasitic flatworm
harkovskaia [24]

Free-living flat worms = carnivores or scavengers
Have digestive cavity, mouth, pharynx 

Parasitic Flatworms: = Feed on blood, tissue fluids, or pieces of cells from within a host

4 0
3 years ago
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“The call of the frog does not have a particular gene of causation. However, it does show a strong correlation with tongue lengt
Amanda [17]

Answer:

to hold her breath i think

Explanation:

5 0
3 years ago
Read 2 more answers
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