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3 years ago

_____ is the measurement of the density of a substance as compared to water.

Biology

2 answers:

denpristay [2]3 years ago

8 0

D. Specific gravity

tester [92]3 years ago

7 0

Answer: Option (D) is the correct answer.

Explanation:

When density of a substance is measured with respect to the density of a standard substance which is usually water then the ratio is known as specific gravity.

Whereas density is defined as the mass of a substance present in per unit volume.

Mathematically, Density = $\frac{mass}{volume}$

For example, specific gravity of water is 1 and a substance that has specific gravity less than specific gravity of water will float otherwise it will sink.

So, specific gravity of mercury is 13.6. Hence, it will sink in water.

Thus, we can conclude that specific gravity is the measurement of the density of a substance as compared to water.

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Semmy [17]

Answer:

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Which of these statements are accurate? Hexokinase is a type of transferase that catalyzes the transfer of a phosphoryl group fr

Agata [3.3K]

Answer:

A. The conformational shift that occurs when glucose, but not water, enters the active site prevents water from hydrolyzing ATP. True

B. Hexokinase consists of two domains, or lobes, that come together when glucose and the MgATP2–MgATP2– complex are bound. True

C. Hexokinase is a type of transferase that catalyzes the transfer of a phosphoryl group from ATP to a hexose. True

Explanation:

A. Hexokinase suffers and conformational changes by binding glucose in a reaction that prevents ATP hydrolysis.

B. Hexokinase is an enzyme with two domains that function by binding to the substrate (i.e., glucose). The region linking both protein domains is responsible for the catalytic activity.

C. Hexokinase is a type of transferase that catalyzes the transfer of a phosphoryl group from ATP to a hexose. During the first stage of glycolysis, the hexokinase transfers one phosphorous group from magnesium-ATP (Mg-ATP) to one hexose molecule, such as fructose, mannose or glucose.

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- Most kinases require the presence of a monovalent metal ion cofactor to prevent ATP hydrolysis. False: In canonical kinases, conserved amino acids bind to divalent metal ions before the transference of the phosphate group to their substrates.

- Hexokinase is found in the mitochondrial membrane. False: Hexokinase is found in the cytosol.

- Hexokinase transfers the terminal phosphate of ATP to carbon 3 of glucose. False: Hexokinase catalyzes the transfer of the terminal phosphate ATP to form glucose 6-phosphate.

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Answer:

C. Meiosis since it produces haploid cellsneeded for reproduction.

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nlexa [21]

Answer:

Two

Explanation:

Because there is two cells in each thing

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What do we call the outer layer of the nucleas?

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