1. Hematocrit is best described as which of the following The number of red bloo

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Question

1. Hematocrit is best described as which of the following

The number of red blood cells in a given volume of blood

The size of red blood cells in a given volume of blood

The fraction of plasma that is occupied by red blood cells.

The fraction of whole blood that is occupied by red blood cells.

2. Which of the following might influence haemoglobin levels?

Number of red blood cells

Size of red blood cells

Hematocrit

All of the above

3. Why is myoglobin expressed as a level (=concentration) but lactate dehydrogenase as a rate?

By convention. There is no real reason.

Though both are proteins (and thus can have a "level"), myoglobin is an enzyme and is therefore expressed as a catalytic rate.

Enzymes do not have concentrations.

Though both are proteins (and thus can have a "concentration"), but lactate dehydrogenase is an enzyme and is therefore expressed as a catalytic rate

4. What does the measurement of mRNA for a protein tell you?

Since proteins are made of mRNA, measuring mRNA tells you the amount of protein

mRNA measurements will tell you whether a tissue has a gene

Since mRNA is made of protein, measuring mRNA tells you the amount of protein

Measuring mRNA gives you an idea of whether a gene encoding a protein of interest is "turned on"

The number of red blood cells in a given volume of blood

The size of red blood cells in a given volume of blood

The fraction of plasma that is occupied by red blood cells.

The fraction of whole blood that is occupied by red blood cells.

Ans: D:Measuring mRNA gives you an idea of whether a gene encoding a protein of interest is "turned on"

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