The chromosomes of most prokaryotes consist of proteins and.

A scientist examines a human cell under a microscopeShe observes the cell engulfing and killing bacteria on the slideWhat functi

Mkey [24]

Answer:

I believe it is An immune cell that defends the body.

6 0

3 years ago

An operon is controlled by a repressor. When the repressor binds to a small molecule, it is released from binding to DNA near th

Dominik [7]

Answer:

Negative inducible.

Explanation:

Operon may be defined as the cluster pf genes that are expressed by the single RNA polymerase. The operon includes in the example of the the polycistronic genes.

Negative inducible operon includes the binding of regulatory protein with the DNA and inhibits transcription. The regulatory protein binds with the operator that prevents RNA polymerase transcription. The mutation in the negative inducible operon prevents the binding of repressor to the small molecule.

Thus, the correct answer is option (a).

6 0

4 years ago

Are some people immune to certain viruses

denpristay [2]

Yes because the traits of the parents can cause that to happen in the body of their offspring.

3 0

3 years ago

Assume that the import of a particular amino acid across the plasma membrane is observed to occur only down its concentration gr

vekshin1

Answer:

facilitated diffusion

Explanation:

In facilitated diffusion, certain transport proteins of membranes (channels and carriers) serve in transport of the substances across the membrane. The movement of the amino acid occurs down the concentration gradient only. In facilitated diffusion, transport of substances occurs from the region of their higher concentration to that of the lower concentration. It is a passive process. The addition of some other amino acid slows down the transport of the first amino acid due to the saturation effect. All the transport proteins that facilitate the diffusion of amino acids across the membrane become occupied. This slows down the transport of the amino acid.

4 0

3 years ago

Read 2 more answers

In peas, purple flowers are dominant to white and tall plants are dominant to short. A white and short plant is crossed with a p

Mumz [18]

to understand what the result of these crosses would be like, we need to know what is gene

The gene is a strand of a DNA molecule (deoxyribonucleic acid), which carries the characteristics that are genetically inherited. They are composed of a sequence of DNA and RNA (ribonucleic acid), responsible for the production and synthesis of proteins in the cell. The gene's greatest attribution, therefore, is to be a store and transmitter of information.

Genes can be classified into:

Dominant genes: assume the specific characteristic in the offspring;
Recessive genes: manifests itself in the absence of the dominant gene;
Structural genes: are those that contain the information that will determine the structure of living beings;
Operator gene: acts on the functioning of other genes;
Regulatory gene: responsible for controlling the synthesis and transcription of other genes.

in genetics, are individuals who have pairs of genes that are identical or different alleles. This means that while the has two identical genes alleles, with the beings the opposite happens, since they have two different genes alleles.

with this information we can say that a white and short plant, when crossed with a plant for both traits, has 60% of this plant being with expression of the dominant genes and 40% of being with expression of the recessive gene.

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Learn more about gene in brainly.com/question/787658?referrer=searchResults

6 0

3 years ago