Question

Which of the following is the function of a totipotent cell?

Answer 1

Correct Answers:

Develops into any kind of cell.

Rationale :

Totipotent cells are the most versatile cells in an organism because they have the ability to differentiate into any type of cell in the body, including both embryonic and extra-embryonic tissues.

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Answer 2

Correct Answers:

Particulate matter is dispersed in a solution.

Rationale :

A colloidal solution consists of tiny particles (particulate matter) that are dispersed throughout a continuous medium.

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Answer 3

Correct Answers:

Insulation.

Rationale :

The myelin sheath acts as an insulating layer around the axons of nerve cells, allowing electrical impulses to travel more quickly and efficiently along the nerve.

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Answer 4

Correct Answers:

Particles become less ordered.

Rationale :

As a solid turns into a liquid (melting), the particles gain energy, leading to a decrease in their orderly arrangement.

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Answer 5

Correct Answers:

Graduated cylinder, water, weighing balance

Rationale :

A weighing balance measures the mass, while water displacement in a graduated cylinder determines the volume of irregular solids.

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Answer 6

Correct Answers:

Proteins

Rationale :

Enzymes are biological catalysts made up of proteins. They speed up biochemical reactions by lowering the activation energy without being consumed in the process.

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Answer 7

Correct Answers:

The reaction is completed in a shorter amount of time.

Rationale :

A catalyst speeds up a chemical reaction by lowering the activation energy required for the reaction to occur, allowing it to proceed more quickly without affecting the reaction's yield or energy release.

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Answer 8

Correct Answers:

Virus

Rationale :

Antibiotics are effective against bacteria but not against viruses. Colds and sore throats are often caused by viruses, which do not respond to antibiotic treatment.

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Answer 9

Correct Answers:

Crural

Rationale :

The tibia and fibula are the two long bones located in the lower leg, which corresponds to the crural region.

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Answer 10

Correct Answers:

The opening of potassium channels, allowing potassium to leave the neuron

Rationale :

During repolarization, potassium channels open, allowing potassium ions to exit the neuron.

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QLexNursing

1 : Which of the following is the function of a totipotent cell?

2 : Which of the following is a colloidal solution?

3 : Which of the following functions does the myelin sheath perform for a nerve cell?

4 : Which of the following summarizes a change that takes place as a solid turns to a liquid?

5 : To accurately measure the density of a series of small irregular solids made of plastic, wood, fiberglass, and glass, a student will need which of the following laboratory tools?

6 : Which of the following classes of biological molecules includes enzymes?

7 : Which of the following best describes the result of using a catalyst in a chemical reaction?

8 : A patient goes to the doctor with a cold and sore throat and asks for antibiotics. The doctor refuses to prescribe antibiotics to the patient because the illness is caused by which of the following pathogens?.

9 : In which of the following regions of the body are the tibia and fibula?

10 : Which of the following actions allows for repolarization of a neuron?