N-CAM mediates interactions between neural cells and is a member of which of the following protein families?
A) catenins
B) cadherins
C) selectins
D) immunoglobulin superfamily (IgSF) proteins
E) lectins
Answer: D
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The diploid number of a roundworm species is 4. Assuming there is no crossover, and random segregation of homologues during meiosis, how many different possible combinations of chromosomes might there be in the offspring
(not including variety generated by crossing over)? A) 4 B) 8 C) 16 D) 64
What enzyme is responsible for proofreading activities during DNA replication?
a. DNA polymerase b. RNA polymerase c. primase d. telomerase
a. a diploid zygote
a. a seed plant with seeds exposed on modified leaves b. a structure that produces vessels in woody tissue c. a sac-like structure at the tip of the stamen d. a seed plant with small spores that produce gametophytes
Habitat: Small Intestine
What will be an ideal response?