Which of the following accurately describes an effect of smoking?
a. smoking enables hemoglobin to carry more oxygen.
b. smoking decreases heart rate.
c. smoking lowers blood pressure.
d. smoking damages cilia in the trachea and more particles enter the lungs.

Which one of the following reasons is not typically why athletes strive for lower body weight and lower body fat?

Which of these is a sexual stereotype? a) on average, males are taller than females. b) people over the age of 60 are not interested in sex. c) male hormone levels differ from those of females. d) there are more male representatives than female representatives in congress.

Which of the following statements describes the lysogenic cycle of lambda (λ) phage? a) after infection, the viral genes immediately turn the host cell into a lambda-producing factory, and the host cell then lyses.b) most of the prophage genes are activated by the product of a particular prophage gene.c) the phage genome replicates along with the host genome.d) the phage dna is copied and exits the cell as a phage.