________ consist of a core of segments of DNA or RNA surrounded by a protein coat.

A. Viruses
B. Protists
C. Archaea
D. Bacteria


Answer: A

Biology & Microbiology

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Before it was genetically engineered, what was

the source of chymotrypsin used in cheese production?

a. calf stomachs b. pig livers c. human cadavers d. sheep brains e. cow intestines

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Four of the five trees listed below are gymnosperms

Select the exception. a. ginkgo b. redwood c. cycad d. palm e. pine

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Plant meristematic cells _____

A) are distributed evenly in all tissues throughout the plant B) are undifferentiated cells that produce new cells C) increase the surface area of dermal tissue by developing root hairs D) subdivide into three distinct cell types named parenchyma, ground meristem, and procambium

Biology & Microbiology

Why would a diet containing unsaturated fats that form triglycerides be better for an athlete when considering energy levels and health?

A. Unsaturated fats have a linear structure, making them easy to break down and releasing high amounts of energy when glucose levels are low. B. Saturated fats have double bonds, making them harder to break down for energy release and creating artery clogging structures. C. Saturated fats are packed closer together, making their breakdown for energy release less efficient and forming unnecessary fat deposits. D. Unsaturated fats are packed closer together, making them higher in energy storage levels and fluid within the body.

Biology & Microbiology