A ribosome consists of ____
a. two small subunits
b. two large subunits
c. three subunits of different size
d. rRNA and ribosomal proteins
e. tRNA and ribosomal proteins
ANSWER: d
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The action of a nerve impulse, neurotransmitter release at the neuromuscular junction, calcium release from the sarcoplasmic reticulum, and subsequent muscle contraction is known as:
A. an action potential B. threshold potential C. a motor event D. excitation-contraction coupling
What is observed when syntenic genes are close enough to one another that they are unable to assort independently?
What will be an ideal response?
Is there a relationship between the problems encountered cloning mammals and the rarity of polyploidy in this group?
What will be an ideal response?
Which of the following factors should be considered when estimating the ecological footprint of urban areas?
A. the population density of the urban area B. the amount of waste generated by the urban population C. the affluence of the urban population D. the amount of undeveloped land outside the urban boundary needed to supply ecological services to the urban population E. All of the above should be considered.