Answer the following statements true (T) or false (F)
1. Restriction enzymes bind to specific sequences of DNA to seal them together.
2. Most plasmids used in biotechnology contain a selectable marker such as an antibiotic-resistance (ampR) gene.
3. A DNA library is known as a genomic library when it is derived from mRNA.
4. If a large protein is run on a gel slab and subjected to electrophoresis, one would expect to find its band towards the top of the gel.
1. FALSE
2. TRUE
3. FALSE
4. FALSE
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The cyclic carbon fixation reactions are also known as the
A. Krebs cycle. B. Calvin cycle. C. citric acid cycle. D. tri carboxylic acid cycle.
Which of the following statements describes proteobacteria?
a. Gram-negative and includes the purple bacteria b. Gram-negative and includes the green bacteria c. Gram-positive and includes the purple bacteria d. Gram-positive and includes the green bacteria e. Gran-neutral and includes the green bacteria
Differentiate between the following terms: threatened species, endangered species, and extinct species. What will be an ideal response?
The artificial selection of different breeds of dogs is an example of speciation.
a. true b. false