When cells differentiate they
a. lose DNA
b. remain totipotent
c. express a specific subset of genes
d. stop growing
e. gain DNA
C
You might also like to view...
Put the following events of transcription in chronological order. 1. Sigma binds to the promoter region. 2. The double helix of DNA is unwound, breaking hydrogen bonds between complementary strands. 3. Sigma binds to RNA polymerase. 4. Sigma is released
Put the following events of transcription in chronological order. 1. Sigma binds to the promoter region. 2. The double helix of DNA is unwound, breaking hydrogen bonds between complementary strands. 3. Sigma binds to RNA polymerase. 4. Sigma is released. 5. Transcription begins. A) 2, 3, 4, 5, 1 B) 2, 3, 1, 4, 5 C) 3, 1, 2, 5, 4 D) 3, 2, 1, 4, 5
An ion is:
a. a type of gas. b. an individually charged particle. c. heavy water. d. water with an extra hydrogen atom. e. a neutrally-charged atom.
What type of normal human cell contains 22 autosomes and a Y chromosome?
A) egg cell B) somatic cell of a female C) somatic cell of a male D) sperm cell
Many features of a protein change when it is moved into an environment with a different pH. Which of the following features would stay the same?
A) amino acid sequence of the protein B) tertiary structure of the protein C) function of the protein D) shape of the protein E) binding properties of the protein