Which of the following statements about schistosomiasis is FALSE?
A) The cercariae penetrate human skin.
B) They symptoms are caused by immune reactions to the eggs shed in the human host.
C) The intermediate host is an aquatic snail.
D) It is caused by a roundworm.
E) The female worm lives in a groove that runs down the body of the male.
D
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Ribosomes are organelles that are involved in ____
a. plasma membrane selectivity b. cellular energy production c. protein synthesis d. transport of materials e. DNA replication
Refer to the accompanying figure. Which statement about label 1 is FALSE?
a. It is haploid. b. It was produced by mitosis. c. It was produced from a megaspore. d. It is not a product of fertilization. e. It is part of the sporophyte generation.
After fertilization, which hormone is secreted by the developing embryo to maintain the function of the corpus
luteum? a. GnRH b. FSH c. hCG d. ACTH e. LH
Conservation is concerned with applying scientific knowledge to prevent the loss of biodiversity. Which of the following human activities is least likely to threaten biodiversity?
A) organic farming B) habitat destruction C) overexploitation D) introduced species