Which of these molluscs commonly have a hinged shell?
A) gastropods only
B) bivalves only
C) cephalopods only
D) gastropods and bivalves
Answer: B
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Regions at the ends of chromosomes that prevent chromosomes from sticking to each other are called ____
a. satellites b. telomeres c. centromeres d. q zones e. p zones
No till farming is advantageous because it
A) reduces soil erosion. B) increases yield. C) decreases need for pesticide use. D) decreases plant cover.
Mendel selected pea plants for his experiments because ____
a. the offspring are infertile b. others were also using pea plants for their experiments and this would allow data sharing c. male and female flowers are on separate plants d. they can be self-fertilized or artificially fertilized by hand e. he was told by his superior that only pea plants were suitable for experimentation
What is the primary body part affected by tuberculosis?
A) the liver B) the muscles C) the immune system D) the lungs