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4 years ago

These are statements or phrases that surround a word that help to explain its meaning.

1 answer:

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Statements that surround a word that help to explain its meaning are called CONTEXT OR CONTEXT CLUES.
The meaning of a word can be derived from the context clues that surrounded it. A word may have different meanings depending on the type of context in which it is found.

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Most protein purification procedures require that all steps be done at refrigeration temperatures (4 °C). This is done partly to

svlad2 [7]

Explanation:

A protein purification is a series of processes that allow the isolation of a single type of protein from a complex mixture. Protein purification is vital for the characterization of the function, structure interactions of the protein of interest, for example an enzyme a cell receptor or an antibody. The initial material is generally a biological tissue or a microbial culture. There are several steps in the purification process; it can release the protein from the matrix that confines it, separate the protein and non-protein parts of the mixture, and finally separate the desired protein from all the others. This last step may be the most laborious aspect of protein purification.

Techniques used

Homogenization

Cell fractionation

Reversible denaturation with ammonium sulfate

Chromatography

Electrophoresis

Dialysis

Ultraviolet-visible spectroscopy

Enzymatic assay

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3 years ago

Before S phase, the cell was diploid (two copies of each chromosome). After cytokinesis, are the cells diploid or haploid? Why?

Alexandra [31]

Answer:

Explanation:

S phase. In S phase, the cell synthesizes a complete copy of the DNA in its nucleus. It also duplicates a microtubule-organizing structure called the centrosome. The centrosomes help separate DNA during M phase.

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3 years ago

The diagram shows a bacterial cell dividing. What is an ADVANTAGE of this type of reproduction?

hjlf

What is an ADVANTAGE of this type of reproduction?
B) Only one parent is required

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4 years ago

Read 2 more answers

Describe fertilisation in terms of cellular and intracellular changes. I will be very happy if someone answer this I will give t

marysya [2.9K]

Answer:

during this process the nucleic of the male and female gametes are fused in order to create a zygote .known as fertilisation.Gametes contain half the number of chromosomes of all other cells in the organism .Meaning they are haploid .

Cells responsible for fertilisation:

fertilisation is the fusion of the nucleus of a male gamete with the nucleus of a female gamete ,producing a new cell called a zygote

hope it helps

5 0

3 years ago

Road construction has isolated a small population of a beetle population from the main population. This newly isolated populatio

In-s [12.5K]

Answer:

genetic drift

Explanation:

The newly isolated population of beetle would have very different allele frequencies than the main population because of genetic drift.

Genetic drift refers to a change in the frequencies of alleles in a population over generations brought about by pure chance. Genetic drift can cause a bottleneck or founder effect. A bottleneck effect is a temporary decrease in the genetic diversity of a population while the founder effect refers to a decrease in the genetic variability of a new population formed from a small number of individuals that get separated from a larger population.

Hence, the newly formed population of beetles would have lower allele frequencies than the main population due to the founder effect brought about by genetic drift.

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3 years ago