A karyotype of one of your skin cells would reveal a total of 46 chromosomes. How many of these are maternally inherited autosomes?
a) 23
b) 22
c) 46
d) 24
e) 21
Ans: b) 22
You might also like to view...
Water is most dense and thus heaviest at 4?C. At 0?C, ice forms and the ice can float on liquid water. Suppose ice were more dense than water at 0?C. What would happen in a lake at this temperature?
A. The ice would cover the bottom of the aquatic system and would build up in layers over time. B. Ice would not form because solids are always less dense than liquids. C. The ice would cover the surface of the aquatic system and would never melt. D. The cold temperatures and the subsequent ice formation would prevent hydrogen bonds from forming between the water molecules, thus causing the existing ice crystals to become disassociated from each other.
Photochrome is the pigment responsible for
a. thigmotropism. b. phototropism. c. gravitropism d. photoperiodism. e. senescence
Calcium ions are normally in higher concentrations outside most living cells than within cells. Which of the following processes is most likely responsible for this condition?
A) active transport B) facilitated diffusion C) osmosis D) simple diffusion
A capnophile is a microorganism that thrives in conditions of high
A. carbon dioxide levels. B. hydrostatic pressure. C. oxygen levels. D. pH. E. salt concentration.