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Brums [2.3K]
3 years ago
12

What were the old models of the solar system?

Biology
1 answer:
Jobisdone [24]3 years ago
6 0

the models of the solar system were the couple of planets and a very big star. AKA the sun

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How much protein should Sarah add to her diet if she gets pregnant?Sarah's protein requirements during pregnancy would be higher
GenaCL600 [577]

Answer:

Sarah should add 19 grams of protein to her diet if she gets pregnant.

Explanation:

Daily protein requirements = body weight in x conversion factor

Pregnant women= 1.1g/kg prepregnancy body weight

Sarah's prepregnancy weight= 132 pound

Sarah should add about 19 grams of protein to her diet to account for the higher protein requirements of pregnancy. That’s only about 1 cup of Greek yogurt. Pregnancy  might be the time to switch to these “twice the protein” products.

8 0
3 years ago
Describe the most common molecular mechanism for recessively inherited human genetic diseases such as cystic fibrosis.
Marta_Voda [28]

Answer:

Explanation:

cystic fibrosis is an autosomal recessive disorder. When the child receives the defective gene from both of his parents, he suffers from cystic fibrosis. Because his parents are carriers. In recessive genetic disorder, the genes will be expressed when both recessive genes are present in one person. The person suffering from this disease have a lung infection and pancreatic dysfunction.  

In this cystic fibrosis, genes are located in chromosome 7. The effective gene is the CFTR gene. The CFTR gene is present in the DNA and by transcription, this forms CFTR protein. This is a channel protein and transports chloride ion.

This CFTR protein transports chloride ions and it makes a balance in the cell membrane. These genes are commonly present in the epithelial cells. Outside the epithelial mucus is present to keep the cells moist.

The epithelium gets a lack of water and chloride due to the defect. Therefore cells need CFTR proteins also. This causes lung infection and pancreatic disorder.

6 0
3 years ago
John and Joshua used a light microscope to observe a plant cell. They indicated the magnification as x1000. Given the eye piece
Zinaida [17]

Answer:

Objective Lens Magnification = ×100

Explanation:

In a microscope, the ocular (eyepiece) lenses are usually to a magnification of ×10, meaning that it magnifies the image 10 times. While the standard objective lenses have magnifications of ×4, ×10, ×40, and ×100.

In order to work out the total magnification, the individual magnifications of the ocular and objective lenses have to be known, after which a simple multiplication of both magnifications will give the total magnification used.

Total Magnification = (eyepiece lens magnification) × (objective lens magnification)

1000 = 10 × obejcetive lens magnification

Dividing both sides by 10

Objective lens magnification = 1000 ÷ 10 = 10

∴ Objective lens magnification = ×100

7 0
3 years ago
All elements are made of basic particles called
Ivenika [448]
All elements are made of "atoms", and an atom is made up from 3 basic particles: Electrons are particles with a negative charge :)
8 0
2 years ago
How do ldl and hdl differ structurally and functionally?
ZanzabumX [31]

The main structural difference between LDL and HDL is their compositions. Approximately 50% of the weight of an LDL particle is cholesterol and only 25% is protein. High-density lipoprotein particles, on the other hand, consist of 20% percent cholesterol by weight and 50% protein.

5 0
3 years ago
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