In a process called ____, cells lose their normal regulatory controls and revert partially or completely to an embryonic
developmental state.
a. metastasis
b. embryogenesis
c. induction
d. determination
e. dedifferentiation
ANSWER: e
You might also like to view...
If you isolate a single nucleotide from a nucleic acid chain and determine that the nitrogenous ring structure is cytosine, you could say with certainty that the nucleotide could have come from:
A. DNA but not RNA. B. RNA but not DNA. C. either DNA or RNA. D. neither DNA nor RNA. E. double-stranded DNA but not single- stranded DNA.
Answer the following statements true (T) or false (F)
1. In the evolution of plants, wood appeared before seeds. 2. Ginkgo trees and humans have similar chromosomal sex-determination systems. 3. The fossil record shows that pollen cones of conifers have become increasingly complex through their evolutionary history. 4. All gymnosperms are wind-pollinated. 5. Some conifers shed their leaves seasonally.
Excess glucose is converted into glycogen in
a. the pancreas. b. the liver. c. the thymus. d. the thyroid. e. the adrenal cortex
Fat absorption differs from protein and carbohydrate absorption because
A. fats enter lacteals rather than capillaries. B. fats are not broken down before they are absorbed. C. there are no enzymes involved in the breakdown of fats, so they are absorbed as fat molecules. D. glycerol cannot be absorbed by villi.