Bones in joints are connected by ligament
1.True
2.False
1
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Neurotransmitters act by binding to receptors that are
a. ligand-gated ion channels. b. located in the cytoplasm. c. tyrosine-kinase receptors. d. not coupled to G proteins.
A theta (?) structure is characteristic of
a. a circular replicon in the middle of replication. b. a replication bubble at the end of a linear chromosome. c. a replication fork. d. the concatenated replication products of a circular replicon. e. a replication bubble in the middle of a linear chromosome.
According to the theory of evolution, those best adapted to the environment will _____
a. survive and reproduce b. not survive
c. produce offspring that are genetically identical to the parents d. have lower fertility rates e. have fewer offspring on average
Which of the following was produced in experiments on primitive Earth conditions conducted by Miller-Urey and others?
A. ammonia and water B. amino acids C. CO2 and H2O D. ammonia and hydrogen sulfide E. methane and oxygen