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Reil [10]
3 years ago
15

Why do scientists believe the universe is still expanding?

Biology
1 answer:
yaroslaw [1]3 years ago
5 0

Answer:

b

Explanation:

I looking at the electro magnetic spectrum I can tell scientists if things are moving toward the Earth or away from the Earth

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The diagram shows two cells. Identify structures C, D, and E and explain how they work together to perform a specific process wi
neonofarm [45]

Answer:

C is endoplasum, d is ribosomes , e is mitocondia

Explanation:

3 0
3 years ago
The lab setup shows four test tubes. Tube 1 contains water only. Tube 2 contains a live snail. Tube 3 contains a live green wate
katovenus [111]

Answer:

I would assume D

Explanation:

Tube 1 doesn't contain an organism so it can't be that one. Both a snail and a plant are considered an organism, and cellular respiration occurs in almost any organism's cells

8 0
3 years ago
If a chromosome unfolds itself, how is transcription enhanced?
konstantin123 [22]
The DNA region is easily accessible 
^^^^^^^^^^^^
6 0
3 years ago
In humans, the antibiotic amoxicillin (a type of penicillin) is used to treat certain bacterial infections. Complete the sentenc
mihalych1998 [28]

Answer:

Amoxicillin inhibits an enzyme required to build cell walls in bacteria.

Since humans have cell membranes, they are unaffected by amoxicillin.

Explanation:

Antibiotics are specifically designed to target bacterial cells, therefore, they don't kill human cells.

Amoxicillin, a type of penicillin, inhibits the biosynthesis of bacterial cell wall. The bacterial cell wall contains peptidoglycan that constitutes almost 95% of the cell wall in some Gram positive bacteria and as little as 5-10% of the cell wall in Gram negative bacteria. Amoxicillin inhibits the cross linkage between the linear peptidoglycan polymer chains that make up a major component of the cell walls of both Gram positive and Gram negative bacteria.

3 0
3 years ago
Which of the following statements concerning carbohydrates associated with the plasma membrane is correct? (eText Concept 7.1)
Ksju [112]

Answer:

The correct answer is : * Membrane carbohydrates function primarily in cell-cell recognition.

Explanation:

The carbohydrates (poly or oligosaccharides) associated with the plasma membrane, are covalently bound to it (to proteins or lipids). They are found in the outer part of the plasma membrane forming the glycocalix. Its main functions are:

-Cell recognition

-Support to the membrane.

8 0
3 years ago
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