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3 years ago

Why is it difficult to observe individual chromosomes with a light microscope during interphase?

Biology

1 answer:

asambeis [7]3 years ago

7 0

Answer:

They have uncoiled to form long, thin strands.

Explanation:

Chromosomes are present in cell nucleus and consist of chromatin. Genes are present in linear order on chromosomes. The chromosomes become visible under the microscope as distinct structures during cell division. When cells are not dividing, the chromosomes decondense to loose their individuality and make the mass of chromatin.

Chromatin is complex of DNA and packing proteins. As the cells enter the prophase stage of cell division, condensation of chromatin occurs and individual chromosomes become visible under microscope. Before that (during interphase), chromosomes are not visible as they are present in decondensed form.

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What can you conclude is one limitation of the arrangement of glucose molecules that gives chitin and cellulose their strength?

bonufazy [111]

Answer:

It cannot be digested and, therefore, provides little nutritional value

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4 years ago

What are some of the structures inside a cell that help it to live and reform its role in an organism?

RSB [31]

Plasma are some of the structures inside a cell that help it to live and preform its role in an organism.

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3 years ago

In ________ conditioning, an established conditioned stimulus is paired with a new neutral stimulus.

irina [24]

An established conditioned stimulus is paired with a new neutral stimulus in: higher-order conditioning.

Classical conditioning refer to a learning process that involves the repeated pairing of two (2) stimuli:

Conditioned stimulus.

Unconditioned stimulus.

Basically, classical conditioning is a learning procedure which helps psychologists in understanding when a neutral stimulus is paired with a conditioned response or a neutral stimulus and an unconditional stimulus.

Similarly, a higher-order conditioning involves pairing an established conditioned stimulus with a new neutral (the second-order) stimulus, in order to make the new stimulus elicit (bring forth) the conditioned response, without presenting the initial conditioned stimulus.

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3 years ago

During which phase of the cell is a cells DNA copied

MakcuM [25]

Explanation:

Hi there!

Cell cycle has 2 phases (i.e M-phase and Inter-phase). Interphase is considered to be the longest phase. Interphase also has G1-phase, S-phase and G2-phase. In cell cycle while moving from M-phase it has two option either to go in G1-phase or G0 phase. It it goes to G0-phase it doesn't go under cell division but if it goes to G1-phase it starts to prepare materials required to replicate or copy DNA. After preparing all the material it goes in S-phase and copies DNA. It doesn't go to G2-phase until it copies DNA perfectly. Then it goes to G2-phase. In this phase it prepares material for replication of other cell organelles.

Therefore, DNA is copied in S-phase.

Hope it helps!

6 0

3 years ago

Read 2 more answers

The force of gravity depends on what 2 things

Delvig [45]

Answer:

mass and distance

Explanation:

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3 years ago

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