Which one of the following is a difference between a normal cell and a cancer cell?
a.

normal cells undergo apoptosis while cancer cells don’t.

b.
normal cells do not respond to regulatory signals while cancer cells do.

c.
normal cells invade surrounding tissues while cancer cells don’t.
which of the following checkpoints determines if dna replication was successful?
a. g2
b. g1
c. m

In eukaryotes, genetic information is passed to the next generation by processes that include mitosis or meiosis. which of the explanations identifies the correct process and supports the claim that heritable information is passed from one generation to another? a. mitosis, followed by cytokinesis, produces daughter cells that are genetically different from the parent cell, thus insuring variation within the population. b. during mitosis, dna replication occurs twice within the cell cycle to insure a full set of chromosomes within each of the daughter cells produced. c. in asexual reproduction, a single individual is the sole parent and passes copies of its genes to its offspring without the fusion of gametes. d. single-celled organisms can fuse their cells, reproducing asexually through mitosis to form new cells that are not identical to the parent cell.

Which symbols below represent the ions found in the glass of water ? a. oh- and h+ b. co2 and o2 c. o2 and h2 d. nh3- and h+

The basic types of tissue in the human body are