The basic unit of life is the ____

a. atom
b. molecule
c. organelle
d. cell
e. organism


ANSWER: d

Biology & Microbiology

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Given the locally unwound double strand above, in which direction does the RNA polymerase move while transcribing DNA?

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A(n) __________ is a hybrid, with two nonidentical alleles (Aa). Fill in the blank(s) with the appropriate word(s)

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Synapse in which neurotransmitters decrease the chance of an action potential on the postsynaptic cell. _____ 2) Synapse in which neurotransmitters allow sodium to enter the postsynaptic cell. _____ 3) A specific type of neuron that conducts information toward the brain and spinal cord from a sensory receptor. _____ 4) The junction between a neuron and another cell. _____ 5) The short branching projections of a neuron, which provide surface area for sending and receiving signals from other cells. _____

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A role of the lymphatic system is to ________

A) transport histamine B) produce hormones related to fighting infections C) produce white blood cells D) return tissue fluid to the circulatory system

Biology & Microbiology