Sexual reproduction requires __________.
A) meiosis
B) fertilization
C) spore formation
D) meiosis and fertilization
Answer: D) meiosis and fertilization
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The most commonly used unit for measuring cell size is a ____
a. decimeter (dm) b. centimeter (cm) c. millimeter (mm) d. micrometer (?m) e. nanometer (nm)
Which of the following is an exocrine gland
that secretes mucus into semen?
a. prostate b. seminal vesicle c. bulbourethral d. epididymus e. vas deferens
Which of the following scenarios exemplifies cancer therapy targeted toward a specific mutation?
A) A patient with leukemia receives chemotherapeutic drug that inhibits DNA synthesis. B) A benign tumor is surgically removed from a patient's kidney. C) A patient with melanoma receives a drug that targets a signal transduction pathway protein. D) A patient with two mutant tumor-suppressor alleles receives radiation and a chemotherapeutic drug that blocks mitosis.
Fruit flies all look more or less alike. If you have a male and female fruit fly, how could you test the hypothesis that they're the same species?
A) Determine the sequence of several of their genes. B) Examine them closely under a microscope, and compare what you see to a published description of fruit flies. C) See if they'll mate when they're put together. D) See if they mate and if their offspring can also mate.