When homologous replicated chromosomes pair up during meiosis, they form a
A. sister chromatid.
B. tetrad.
C. single-stranded chromosome.
D. centromere.
B
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What molecule directly provides stimulation and growth of bone and cartilage?
What will be an ideal response?
Suppose both excitatory and inhibitory neurons synapse with a single postsynaptic neuron. What determines if an action potential is initiated in the postsynaptic neuron?
A. the kind of neuron involved B. the size of the neuron involved C. whether the neuron is myelinated or non-myelinated D. the number of EPSPs in relation to the number of IPSPs E. This situation is not possible in humans.
Motor pathways are ascending pathways in the brain and spinal cord that control the activities of skeletal muscle.
Answer the following statement true (T) or false (F)
The epithelial lining of the uterine tube is
A. stratified cuboidal epithelium. B. nonkeratinized squamous epithelium. C. ciliated columnar epithelium. D. pseudostratified columnar epithelium. E. ciliated cuboidal epithelium.