The terms exon and intron are best associated with
A. transcription.
B. translation.
C. replication.
D. prokaryotic cells.
A. transcription.
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The energy currency of a cell is _______
A. ATP B. glucose C. glycogen D. triglycerides E. proteins
Why is nitrogen fixation by prokaryotes essential to life on Earth?
a. It removes nitrogen from the soil. b. It converts atmospheric nitrogen to a non-toxic form. c. It provides nitrogen sources for plants and animals. d. It provides an energy source for photosynthesis. e. It allows for the breakdown of complex macromolecules.
The primary difference between different nucleated cells in a developing zygote is
a. the genetic code of each cell. b. the expression of housekeeping genes. c. the expression of a gene or group of genes. d. the number of chromosomes present in the nucleus. e. the presence or absence of gene regulators.
Which of the following terms describes gene regulation that occurs by rendering a protein non-functional?
a. epigenetic level of regulation b. post-transcriptional level of regulation c. translational level of regulation d. post-translational level of regulation