________________ is a virus that infects the widest range of mammals.

a. Rabies
b. Influenza
c. The common cold virus


Ans: a. Rabies

Biology & Microbiology

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The antiparallel arrangement within DNA molecules refers to

A. a purine always bonding to a pyrimidine. B. each base bonding at the 1' position of the sugar. C. one helix strand that runs from the 5' to 3' direction and the other strand runs from the 3' to 5' direction. D. an original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule.

Biology & Microbiology

Microtubules and microfilaments have different

functions mainly due to a. their chemical composition. b. their location in the cell. c. their association with other proteins. d. their physical structure. e. the type of cells that they are in.

Biology & Microbiology

The information storage molecules of cells are called

A. phospholipids. B. nucleic acids. C. proteins. D. hormones. E. enzymes.

Biology & Microbiology

The field of neurobiology is seeing rapid advances in our understanding of neural circuitry in the brain

Part of this work involves the physical mapping of all synapses (a project dubbed the connectome); another critical advance is in the area of optogenetics, which allows scientists to dissect neural circuits that determine specific behaviors in a range of organisms from fruit flies to monkeys. A. Describe the method of optogenetics. B. Optogenetics has great potential for deepening our understanding of behavior, learning, memory, and cognitive development. However, it is not as likely to be used directly for treatment of problems such as depression or anxiety. Why not? Consider the limitations of the method when answering this question.

Biology & Microbiology