What is the principal energy storage molecules of plants and animals?

A. sugars.
B. proteins.
C. lipids.
D. vitamins.
E. carbohydrates.


Ans: E. carbohydrates.

Biology & Microbiology

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In bacterial synthesis of polysaccharides, such as starch and glycogen, glucose is donated to the end of the growing chain by ADP-glucose. A similar reaction occurs in bacterial branching of phospholipids when phosphatidic acid is attached to a ________.

A. dihydroxyacetone phosphate B. fatty acyl-ATP C. acetyl-CoA D. cytidine diphosphate carrier

Biology & Microbiology

The mitotic spindle is primarily composed of ____

a. actin b. intermediate filaments c. microtubules d. keratin e. motor proteins

Biology & Microbiology

Bacteria in the colon protect people from some infections.?

Indicate whether the statement is true or false.

Biology & Microbiology

Which of the following is NOT true about IgG type antibodies?

a. It is the most common/abundant type of antibody in the blood b. It is the most common/abundant type of antibody in body secretions c. It can cross the placenta and protect the fetus. d. It is the longest lasting type of antibody produced.

Biology & Microbiology