During which phase do sister chromatids separate?
a. interphase
b. prophase
c. anaphase
d. telophase
e. metaphase
ANSWER: c
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Evidence that all differentiated cells contain the organism's complete genome is provided by ____
a. comparing frog and sea urchin development b. observing that some cells remain totipotent c. observing that totipotent cells give rise to multipotent cells d. observing that multipotent cells give rise to pluripotent cells e. the successful cloning of a sheep, Dolly
Which feature is not consistent with animals?
a. Heterotrophs b. Single celled c. Ingest food d. Unwalled cells in their bodies e. Motile during some point in their life
Tree rings are formed by growth in the ________
a. epidermis b. vascular cambium c. periderm d. cortex
The apical ends of intestinal cells face the intestinal channel and have long processes that facilitate the absorption of nutrients. What is the name of these processes and what cytoskeletal element forms their internal skeleton?
A) microvilli, microtubules B) villi, microtubules C) microvilli, actin filaments D) villi, actin filaments E) microvilli, intermediate filaments