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JulsSmile [24]
2 years ago
11

When during the cell cycle is a cell’s DNA replicated

Biology
2 answers:
vlabodo [156]2 years ago
5 0

Answer:

S phase

Explanation:NA is replicated during the S phase of the cell cycle. After passing the G1 checkpoint, which evaluates whether a cell has the size, nutrients, and DNA integrity to continue with replication, the cell becomes committed to division.

sp2606 [1]2 years ago
4 0

Answer:

In the eukaryotic cell cycle, chromosome duplication occurs.

Explanation:

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Which antibiotic was not effective against E. coli? neomycin, penicillin, erythromycin, ampicillin
qaws [65]

The antibiotic called ampicillin was not effective against E.coli.

Answer: D

Explanation:

E.coli is normal microbial flora which is present in the gut of the mammals.

It is gram negative bacteria and very few strains of this bacteria causes harm.

Antibiotics are the chemical drugs which are used to treat the microbial infection either by killing the causative organism or by its growth inhibition.

Antibiotics such as neomycin, penicillin and erythromycin are usually used to treat E.coli infection.

Antibiotic such as Ampicillin is not used as the bacterium E.coli is highly resistant to it.  

6 0
3 years ago
Where is the majority of negative charge on the water molecule?
rusak2 [61]
 A water molecule (H2O) will have a slightly positive side, and a slightly negative side. The oxygen side of water is the one that is negative, while hydrogen side tends to be more positive. When a molecule has a half negative and half positive side like water does, it is called a polar molecule. :D 
5 0
3 years ago
Opossums are solitary animals that usually meet in nature only to mate. What is their probable distribution pattern?
Goryan [66]

Random distribution is the probable distribution pattern of opossums.

Explanation:

The opossums are the member of low density population. They are sparsely distributed because of the low number. There are troubles for them to find a mate.

Their habitat makes them solitary as they have flexible dietary habits. they are terrestrial animals living in burrows and are nocturnal.

They have random distribution pattern. The opossums are distributed in the population as random. The mates in opossums do not have choices of mates and the environment conditions in which they live are stagnant.(having no social life). Random interaction is seen in <em>species which do not have any social  bonding</em> between the species of the animals or plants.

7 0
3 years ago
You are observing a blood slide under the microscope and you see a large cell with a U-shaped nucleus and light blue cytoplasm.
velikii [3]

Answer: Monocytes.

Explanation:

Monocytes have a abundant amount of gray cytoplasm with fine lilac granules in it and because of this the cytoplasm appears ground glass.

The vacuoles are vacant and there is a gap sen in the cell as vacuoles when observed under microscope. The vacuoles of the monocytes are not stained.

They have a U-shaped nucleus and are extremely motile. The monocytes are lightly stained as compared to leukocytes.

4 0
3 years ago
Mutations result in changes to genotype that can result in changes in phenotype. Explain how a mutation causes a change in the g
Alecsey [184]

Answer:

A mutation can alter the structure/function of a particular protein, thereby also altering the phenotype resulting from this new variant

Explanation:

A mutation can be defined as a genetic change in the genome of an organism. Some mutations are capable of modifying the expression and/or structure of the proteins, while other mutations (known as silent mutations) have no effect on the resulting proteins. When mutations occur within the gene region encoding a protein (i.e., exons), they are potentially capable of producing a faulty protein. For example, a mutation can alter the Open Reading Frame (ORF) of the resulting protein, thereby inactivating it. The mutations that alter the structure and/or function of the protein can also alter the resulting phenotype associated with the expression of this protein. For example, a mutation within a gene that encodes a key enzyme can potentially alter the binding site of the protein, so the resulting mutated enzyme cannot bind to the substrate anymore. In consequence, this mutation alters the phenotype of the individual who is not more able to carry out the metabolic reaction catalyzed by the faulty enzyme.

8 0
2 years ago
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