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Paha777 [63]
4 years ago
7

Explain why antibiotics such as penicillin, kill bacteria and not viruses

Biology
2 answers:
nekit [7.7K]4 years ago
4 0

Antibiotics cannot kill viruses because viruses have different structures and replicate in a different way than bacteria.
zimovet [89]4 years ago
3 0

Answer:

Antibiotics cannot kill virus.

Explanation:

Viruses are different from bacteria.They have different ways of survival and reproduction.Viruses have a protective protein coat instead of cell wall.But many Antibiotics including penicillin work by attacking cell wall.

Thus bacteria can be attacked by antibiotics but viruses cannot.

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5. The energy for the water cycle comes from
Brums [2.3K]

Answer:

A. the sun

Explanation:

4 0
3 years ago
Read 2 more answers
Paints, glues, and liquid paper are examples of ______.
mamaluj [8]
The correct answer is option #1; carbon monoxide. Paints, glues, and liquid paper are examples of carbon monoxide. Carbon monoxide is a colorless and odorless gas that is less dense than the air. The carbon monoxide is converted into things that it enables it to create things such as paints, glues, and liquid paper.
8 0
3 years ago
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1. Describe the developments that led to the cell theory.
vazorg [7]

Answer:

Virchow saw cells dividing and added that living cells arise only from other living cells. All organisms are made of cells, all life functions occur in cells, and all cells come from other cells

Explanation:

Hope this helped you out.

3 0
3 years ago
What is NOT an example of proof of the existence of the emdosymbiotic theory in modern day mitochondria?
garik1379 [7]

Answer:

The correct answer is - option B. mitochondria have their own nucleus.

Explanation:

Endosymbiotic theory is a evolutionary theory which explains how eukaryotic cells evolved from prokaryotic organisms.

Evidences of endosymbiotic theory are:

1. Mitochondria and chloroplasts are double membrane bound cell organelles. The inner membrane probably evolved from the plasma membrane of engulfed bacterium and outer membrane from the plasma membrane or endoplasmic reticulum of the host cell.

2. Almost similar size of mitochondria and chloroplast and bacteria and their ribosomes.

3. Cristae of mitochondria resemble the folded membranes is groups of bacteria.

4. Mitochondrion and chloroplast both have circular DNA similar to those of bacterial DNA.

8 0
3 years ago
A person that is heterozygous type AB (AB) marries a person that is heterozygous type A (AO). What is the probability that their
BigorU [14]

Answer:

The correct option is <em>B. 25 %</em>

Explanation:

 A heterozygous type can be described as the type in which both the alleles of a gene are different. If both the alleles of a gene are similar in an organism, then the person is said to be homozygous for the trait.

In the above question, two heterozygous parents are to be cross- bred to check the probability of them producing homozygous alleles (AA).

A punnet square made will show the following results:

       A     O

A     AA    AO

B    BA     BO

Hence, there will be 25% chance that the offspring produced could be homozygous AA.

6 0
3 years ago
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