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olga_2 [115]
3 years ago
7

Please someone help me with this

Biology
1 answer:
fiasKO [112]3 years ago
8 0

Answer:

Explanation:

1. a. Sunlight hitting the Earth's surface is the source of all energy in the pyramid.

b. 25,500 kcal is provided by this source to a square meter per year.

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4.
Luden [163]
4. DNA sequence comparison

5. Random mutations 


6 0
3 years ago
The forward and reverse PCR primers used for the amplification of a VNTR locus on chromosome number 4 are 20 bases and 21 bases
zimovet [89]

The repeats which occur together on a chromosome are referred to as VNTR. The length of each repeat is 60bp.

The first primer is 20bp and is 53 bp away from 1st repeat. Therefore, the total length of sequence amplified by the first primer till 1st repeat = 20+53 = 73bp. Beyond this point 6 repeats on 60 bp are present, hence, the length becomes = 73 + (60X6) = 433bp.

Now the reverse primer which is 21bp in length is located 28bp from the repeat on its side. Reverse primer comes from the opposite direction, so it must be present after the 6 repeats.

The total length of the amplified region = 433 + 28 + 21 = 482 bp.

5 0
3 years ago
Jed was hospitalized for a hip surgery. He is eight years old, and is now exhibiting confusion about the time of day or day of w
Fudgin [204]

Answer:

The correct answer is delirium.

Explanation:

An unexpected variation in the brain, which leads to emotional disruption and mental confusion is known as delirium. It makes an individual difficult to remember, sleep, think, to pay attention, and several other consequences. One might experience delirium post-surgery, at the time of alcohol withdrawal, or with dementia.  

However, the condition is generally impermanent and can be cured efficiently. Delirium influences the emotions, mind, sleep patterns, and control of muscles. One may find it tough to concentrate or feel confused regarding his or her locations. One may also move gradually or briskly than generally, and may even encounter with mood swings.  

Thus, it can be concluded that in the given case of 8 year Jed, who had undergone surgery is not able to concentrate on anything and is feeling confused due to a condition known as delirium.  

5 0
3 years ago
Clouds form when the water vapor in air condenses as
svlad2 [7]

Answer:

Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals. For this to happen, the parcel of air must be saturated, i.e. unable to hold all the water it contains in vapor form, so it starts to condense into a liquid or solid form.

Explanation:

7 0
2 years ago
Viscous fiber helps to lower blood cholesterol levels by interfering with the reabsorption of ________ in the intestines.
Yuki888 [10]
By interfering with the absorption of BILE in the intestine. Bile contains cholesterol, if it absorbed from the intestines it will increase the level of cholesterol in the blood stream. So, the viscous fiber stop this by sequestering the bile acids.
8 0
3 years ago
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