The phase of mitosis that is characterized by the disappearance of the nuclear membrane is

Answers

Answer 1
Answer:

Answer:

Prometaphase (late prophase)

Explanation:

Mitosis is the kind of cell division in which two genetically identical copies of a cell is formed from a cell. Mitosis comprises of stages which include prophase, metaphase, anaphase and telophase. Each phase is characterized by specific occurrences that all work together to achieve the main goal of forming two daughter cells.

According to this question, PROPHASE stage is the stage characterized by the condensation of chromatids into chromosomes, the disappearance of nucleolus and BREAKDOWN of NUCLEAR MEMBRANE.


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Answers

Answer:

Explanation:

A

Describe how an allosteric enzyme works.

Answers

Answer:

Allosteric enzymes bind at different site from the substrate binding site.

Explanation:

The activities of some enzymes, particularly those which form a part of a chain of reactions like metabolic pathways, are regulated internally. Some specific low molecular weight substances such as the products of another enzyme further on in the chain, acts as the inhibitor. Such a modulator substance binds with a specific site of the enzyme different from the substrate binding site. This binding increases or decreases the enzyme action. Such enzymes are called allosteric enzymes and the site at which they bind is called allosteric site.

Example: Hexokinase is an enzymes which converts glucose to glucose-6-phosphate in glycolysis. Decline in the enzyme activity by the allosteric effect of the product is called feedback mechanism, like the allosteric inhibition of hexokinase by glucose-6-phosphate,

When viewing a specimen through a light microscope, scientists use ________ to distinguish the individual components of cells.a beam of electrons
radioactive isotopes
special stains
high temperatures

Answers

Answer:

When viewing a specimen through a light microscope, scientists use special stains to distinguish the individual components of cells.

Explanation:

Microscope cell staining -

Microscope cell staining is a method that is used to for the better visualization of the cells and the parts of the cell , when are studied under microscope .

Stains are basically a type of biological tissues .

By the use of different type of stains , a nucleus of the cell or the cell wall of the cell are viewed easily , cells are sometimes stained in order to highlight metabolic process and can be used to find the difference between a dead or a live cell .

Some type of stains are specific for living cells , but some stains can work both for living as well as the non living cells .

You going on a trip to Europe you need to figure out how much money you should save for gasoline you have determined that while you are traveling in Europe you will cover about 325 miles how many kilometers will you be traveling?

Answers

Answer:

523.035 km

Explanation:

It is given that, a distance of 325 miles is covered on a trip to Europe. In this problem, we need to find how many kilometers will you be traveling.

To convert 325 miles to km, we must know the conversion from miles to kilometers.

1 mile = 1.60934 km

For 325 miles, multiply it by 1.60934 i.e.

325 miles = (325 × 1.60934) km

= 523.035 km

Hence, you will be travelling 523.035 km on a trip to Europe.

Final answer:

To convert from miles to kilometers, you multiply the miles by 1.60934. Therefore, if you're planning to travel 325 miles in Europe, this is approximately equivalent to 523.0 kilometers.

Explanation:

When converting miles to kilometers, you should know that 1 mile is approximately equivalent to 1.60934 kilometers. To find out how many kilometers you will be traveling, you would multiply the total miles you are planning to travel by the conversion factor.

Therefore, if you plan to travel 325 miles:
325 miles * 1.60934 (kilometers/mile)= 523.0285 kilometers.

The answer can be rounded to the nearest tenth, therefore you will be traveling approximately 523.0 kilometers.

Learn more about Conversion here:

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You have discovered a very small amount of dna from an ancient organism that you want to save and study. what is the very first thing you should do to allow you to study this dna in the lab?

Answers

Answer:

PCR amplify the DNA

Explanation:

HIV's genome of RNA includes the code for reverse transcriptase (RT), an enzyme that acts early in infection to synthesize a DNA genome off of an RNA template. The HIV genome also codes for protease (PR), an enzyme that acts later in infection by cutting long viral polyproteins into smaller, functional proteins. Both RT and PR represent potential targets for antiretroviral drugs. Drugs called nucleoside analogs (NA) act against RT, whereas drugs called protease inhibitors (PI) act against PR. Which of the following treatment options would most likely avoid the evolution of drug-resistant HIV (assuming no drug interactions or side effects)?(a) Use a series of NAs, one at a time, and change about once a week.

(b) Use a single PI, but slowly increase the dosage over the course of a week.

(c) Use high doses of NA and a PI at the same time for a period not to exceed one day.

(d) Use moderate doses of NA and two different PIs at the same time for several months.

Answers

Answer:

(d) Use moderate doses of NA and two different PIs at the same time for several months.