Which of the following is an example of potential energy?
a. riding a bicycle
b. swinging on a rope swing
c. doing jumping jacks
d. sitting on a couch
d. sitting on a couch
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Which of the following eukaryotic RNA polymerases is responsible for transcribing ribosomal RNAs (rRNAs)?
A. RNA Pol I B. RNA Pol II C. RNA Pol III D. RNA Pol I and RNA Pol III E. RNA Pol II and RNA Pol III
A biologist discovers a new species of organism adapted to living in a deep underground cavern that provides no source of free water. The organism is eyeless and covered by fur, and it has a four chambered heart with a closed circulatory system. What excretory system adaptations to this extreme environment might the biologist expect to find?
A. Very long malpighian tubules B. Very short malpighian tubules C. Metanephridia with a large number of nephridiopores D. Nephrons with long loops of Henle E. Nephrons with short loops of Henle
Transmission of the nerve impulse across a synapse is accomplished by
a. the release of Na+ at the presynaptic membrane b. the release of neurotransmitters at the postsynaptic c. the reception of neurotransmitters at the postsynaptic membrane d. only a and c are correct
An experiment during which two heterozygous F1 individuals are bred and produce two different phenotypes for a single trait is termed a ___________.
A. Punnett square B. Ctrihybrid cross C. monohybrid cross D. dihybrid cross