Animals with radial symmetry have a mesh of interconnected neurons called a:

a. nerve
b. nerve cord
c. nerve net
d. ganglia
e. brain


c

Biology & Microbiology

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Even though bacteria lack membrane-bound organelles, such as chloroplasts and mitochondria, they

can still perform the functions of these organelles by localizing certain metabolic enzymes on: a. the nuclear membranes. b. the endoplasmic reticulum. c. the plasma membrane. d. ribosomes. e. the cell wall.

Biology & Microbiology

The final three-dimensional shape of a single polypeptide is called its ________ structure.

A. primary B. secondary C. tertiary D. quaternary

Biology & Microbiology

The bacterium that causes tuberculosis can be expelled from the lungs by a cough and remain viable in the air for an hour or more. If a person inhales the bacteria from the air, what type of transmission has occurred?

A) indirect contact B) airborne C) waterborne D) foodborne E) bodily fluid

Biology & Microbiology

What is the most likely consequence of a mutation that causes sporopollenin to degrade quickly after it is synthesized?

A. a decrease in the number of sperm that can be produced B. a reduction in the ability of pollinators to detect and transfer pollen grains to a stigma C. a decrease in the ability of the pollen grain or spore to open when a suitable location is found D. a reduction in the ability of the integument of an ovule to develop into a seed coat E. a reduction in the ability of pollen and spores to disperse to new areas

Biology & Microbiology