In a flowering plant, the cells that give rise to sperm undergo meiosis in the
A) ovaries.
B) sepals.
C) anthers.
D) stigma.
Answer: C
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Each villus contains a lacteal, which functions to:
a. absorb the products of lipid digestion. b. aid in the absorption of carbohydrates. c. aid in the absorption of water. d. secrete enzymes to aid in the absorption of fats. e. remove protein from the interstitial fluid.
Name that STD! Choose from the following STDs. You may use each choice more than once. In some cases, there may be several correct answers
gonorrhea, chlamydia, human papillomavirus (HPV) infection, genital herpes, syphilis • Which STD usually causes death if it is left untreated? • This STD goes through three stages before causing death. • Which STD is suspected after an abnormal PAP test in females? • Name two STDs that can be contracted on mucus membranes other than those of the reproductive systems. • If an STD is detected early, many can be easily treated. Which STD cannot be treated (meaning that the person can never get rid of it, even though it may be managed)? • Name three STDs that may have no symptoms (in either men or women). • John has symptoms of an STD (burning sensation while urinating and a yellowish discharge from the urethra) that popped up 3 days after sexual contact with a questionable partner. Based on his symptoms and this timing, John probably has which STD? • This STD can cause genital warts. • Which STD can cause a rash over the entire body? • Several STDs can be transmitted by oral sex. Name one. • For which STD is there now a vaccine available for females?
Assume that a dihybrid F2 ratio, resulting from epistasis, was 15:1. If a double heterozygote was crossed with the fully recessive type, what phenotypic ratio is expected among the offspring?
A) 1:3 B) 3:1 C) 5:7 D) 1:2 E) 1:1
The spirochetes include the causative agents for ________.
A. plague B. whooping cough C. gonorrhea D. Lyme disease