The intermediate stage of cellular respiration
A. produces pyruvate and occurs in the mitochondria.
B. requires Coenzyme A and occurs in the cytosol.
C. produces ATP and occurs in the cytosol.
D. produces carbon dioxide and occurs in the mitochondria.
Answer: D
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When neurotransmitter binds to muscarinic receptors on smooth muscle cells in the gastrointestinal tract,
A. motility increases. B. motility decreases.
Of the different sources of genetic variability which on could be defined as permanent, transmissible changes to the DNA coding sequence that are often caused by outside environmental factors?
A) independent assortment B) crossing over C) random fertilization D) mutation
Answer the following statements true (T) or false (F)
1. Arteries always carry blood away from the heart. 2. Arteries always carry oxygen-rich blood. 3. Every blood vessel in the body has the tunica media layer. 4. Every blood vessel in the body has the tunica intima layer. 5. Veins have one-way valves that are not present in arteries.
Differentiation is
A) the transfer of genetic information from one generation to the next. B) the gradual change in anatomical and physiological characteristics from conception to maturity. C) the formation of more specialized cell types through selective changes in genetic activity. D) the fusion of two haploid gametes that results in one diploid zygote. E) a developmental stage of the embryo where body shape becomes discernable.