Which of the following STDs is caused by a virus?
A. vaginitis
B. gonorrhea
C. chlamydia
D. HIV/AIDS
E. syphilis
Answer: D
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The organ system that regulates and integrates body functions via hormones
A) Muscular
G) Respiratory
B) Reproductive
H) Skeletal
C) Digestive
I) Nervous
D) Cardiovascular
J) Endocrine
E) Integumentary
K) Lymphatic
F) Urinary
Which of the following is TRUE of a morphogen? It is a signaling molecule that
A. is required for cell-to-cell contact within the embryo. B. induces the differentiation of cells within the embryo. C. induces blastulation of the developing embryo. D. induces implantation of the embryo into the uterus of mammals. E. that separates out cytoplasmic factors to their respective cells within the developing embryo.
The cause of the Irish potato famine of the 1840s was the protist
a. Pseudomonas aeruginosa. b. Phytophthora infestans. c. Plasmodium falciparum. d. Physarum polycephalum. e. Phytophthora ramorum.
The evolution of membrane-bound organelles and thus compartmentalization within eukaryotic cells likely arose due to all of the following except ________.
A. the need to increase the overall amount of cell membrane to maximize efficiency of transport systems B. the need to increase surface area to maximize those processes that take place in a membrane, such as oxidative phosphorylation C. the need to spatially separate simultaneous processes in order to ensure independent control D. the need to prevent mixing of cellular macromolecules such as proteins and polysaccharides