BIOLOGY HIGH SCHOOL

Ciprofloxacin (cipro) is an antibiotic that inhibits bacterial dna replication. it enters cells by diffusion. many cells resist the action of cipro by expressing a membrane protein that pumps the antibiotic out the cell. what does the cipro-resistance protein have in common with porins?

Answers

Answer 1
Answer:

The porins are the membrane proteins, which allows the transfer of the molecules. It is a transport protein. The cipro-resistance protein is also a transport protein. Both the porins and the cipro resistance proteins are membrane transport protein. The presence of the cipro-resistance protein does not allow the ciproflaxin drug molecule to cross through the normal protein, as a result it causes resistance.

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Which of the following biomolecules typically contains both nitrogen and phosphate? A- lipid
B- protein
C- Nucleic acid
D- carbohydrate

Answers

Biomolecules that typically contain both nitrogen and phosphate - C. Nucleic acids.

Nucleic acids are biomolecules made up of the monomers called nucleotides, Nucleic acids store, transmit, and expresshereditary information. There are two types of nucleic acids:DNA (deoxyribonucleic acid) and RNA (ribonucleic acid).

All the genetic information is coded in the sequences of nucleotides. Nucleotide has the following components:

  • Sugar (ribose or deoxyribose sugars) - pentose sugars are present in them.
  • Phosphate - with sugar, phosphate makes the backbone and framework of the nucleic acids.
  • nitrogen base - there are four nitrogen bases two purines;adenine and guanine and two pyrimidines;Thymine (uracil in RNA) and cytosine.

Thus, Biomolecules typically contain both nitrogen and phosphate - C. Nucleic acids.

Learn more about nitrogenous bases:

brainly.com/question/817276
 Nucleic acids as the nitrogen is part of the nitrogen base and the phosphorous is part of the phosphate group.

Genetic drift tends to occur in populations that

Answers

Answer:

are reproductively isolated

Explanation:

The genetic drift represents a change in the frequency of an already existing gene variant in a population as a consequence of random sampling of organisms. The offspring would have the genes from their parents, and because the population is limited in numbers and it has been exposed to a new environment, the individuals with advantageous traits will survive and reproduce, while the others will die out gradually. This occurs when a small population of some species is reproductively isolated. The genetic variation is very small because of the small number of individuals, so only certain genes are passed on tot he offspring, thus resulting in gradual changes that will eventually lead to the creation of a separate species.

which best helps scientists determine the age of fossils? a. physical traits b. genetic makeup c. reproductive strategy d. radioactive isotopes

Answers

it would be the genetic make up of an organism

the correct answer is radioactive isotopes

Which of the following statements about air pollution is not true?a. Air pollution is caused by natural and human processes.
b. Carbon monoxide and sulfur oxides are common air pollutants.
c. Natural components of air, like carbon dioxide, cannot be considered air pollutants.
d. Primary and secondary pollutants are harmful to human health and the environment.

Answers

Answer: c) Natural components of air, like carbon dioxide, cannot be considered air pollutants.

Explanation:

Carbon dioxide plays a role as greenhouse gas. Though living being emit carbon dioxide when they breathe, carbon dioxide is considered as a pollutant when associated with cars, power plants, and other human activities that involve the burning of fossil fuels such as gasoline and natural gas.
the answer is C. the other answers are correct

Endorphins increase basal metabolic rate. increase muscle mass. reduce appetite. reduce carbohydrate cravings.

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The answer is "Endorphins reduce appetite." Endorphins are hormones that are released when you exercise. They have several benefits such as decreasing appetite, reducing stress, blocking pain, and simulating euphoria. The more exercise you do, the more endorphins you release. This means that more endorphins stay in your blood which makes it easier to do longer periods of exercise.

Scientists use the scientific method in order to: (select all that apply) answer questions. provide an objective, standardized approach to experimentation. generate evidence to support their arguments. minimize prejudice or bias in the experimenter.

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Answer:

The scientific method attempts to minimize the influence of bias or prejudice in the experimenter. ... It provides an objective, standardized approach to conducting ... By using a standardized approach in their investigations, scientists can feel ... Or they can ignore data that does not support the hypothesis.

Explanation:
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