Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through _____
A) plasmodesmata
B) intermediate filaments
C) tight junctions
D) desmosomes
E) gap junctions
Answer: E
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What kind of eye color would be expressed in male progeny from a white-eyed female and a red-eyed male?
A. All males would have red eyes. B. All males would have white eyes. C. Half of the male progeny would have red eyes and half of the male progeny would have white eyes (1:1 ratio of eye color in males).
Alleles are defined as ________
a. paired chromosomes with the same size and shape b. different genes c. different forms of a gene d. genetically identical copies of an individual
A protein combined with cholesterol in the blood is an example of a(n) ____
a. irregular protein b. lipoprotein c. glycoprotein d. denatured protein e. collagen
How is sex determined in most ants and bees?
A) by the X-Y system B) by the Z-W system C) by the number of chromosomes D) by the size of the sex chromosome