Food macromolecules are absorbed intact from the digestive tract and they are broken down only by the cells that ultimately use them.
Indicate whether the statement is true or false.
Answer: False.
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Most mollusks have a closed circulatory system in which hemolymph is confined within the walls of hearts and
vessels.
a. True b. False
Destruction of the motor areas in the right cerebral cortex results in the loss of ____
a. sensation on the right side of the body b. sensation on the left side of the body c. voluntary movement on the left side of the body d. voluntary movement on the right side of the body e. involuntary control of the right side of the body
Which of the following substances found in C4
plants has four carbon atoms? a. phosphoglycerate (PGA) b. ribulose bisphosphate (RuBP) c. phosphoglyceraldehyde (PGAL) d. glucose e. oxaloacetate
In a certain population, the allele causing sickle cell anemia has an allele frequency of 0.2. If the population is in
genetic equilibrium for this allele, what fraction of the population would be carriers for the allele (heterozygous individuals)? a. 0.24 b. 0.32 c. 0.42 d. 0.48 e. 0.80