What is a canaliculus?
A. the large cavity inside a long bone
B. a type of bone forming cell
C. a stress plate in spongy bone
D. a small channel in the matrix of bone
E. a fibrous connective covering of bone
Answer: D
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Which of the following organisms has a pattern of gastrulation that is the most similar to humans?
a. amphibians b. birds c. drosophila d. sea urchin e. zebra fish
Which of the following is dense connective
tissue that joins two bones? a. sutures b. ligaments c. muscles d. tendons e. fascia
Which of the following statements most accurately describes a selectively permeable membrane?
a. Solutes are never able to cross the membrane. b. Large molecules are always excluded from crossing the membrane. c. Substances can only pass through the membrane with the help of either active or passive transport proteins. d. Certain solutes move freely across the membrane by simple diffusion while others must be helped across by active or passive transport proteins; some substances are completely excluded from crossing the membrane.
This group is one of the two main angiosperm clades. This plant group has about 60 000 species that are characterized by having a single cotyledon. What is the name of this plant group?
a. eudicots b. orchids c. monocots d. water lilies