A microbiologist Gram stains a bacterium and finds the bacterium to be blue to purple in color. This identifies the

A. bacterium as gram-positive.
B. bacterium as a disease-causing organism.
C. bacterium as an endospore former.
D. species of bacterium.
E. bacterium as gram-negative.


A. bacterium as gram-positive.

Biology & Microbiology

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Answer the following statements true (T) or false (F)

1. A single gene always encodes for an enzyme. 2. RNA polymerase II of eukaryotes always requires more than one general transcription factor to initiate transcription. 3. DNA is used as a template to make mRNA, which contains the information to make a polypeptide. 4. As part of the transcriptional unit, regulatory sequences are the sites where RNA polymerase and transcription factors bind to regulate transcription.

Biology & Microbiology

Glycolysis depends upon a continuous supply of

a. NADP. b. pyruvate. c. glucose. d. NADH. e. H2O.

Biology & Microbiology

Suppose that two bases are inserted into the coding region of a gene just after the start codon of a gene. What type of mutation has occurred?

a. a missense mutation b. a chromosomal mutation c. a silent mutation d. a frameshift mutation

Biology & Microbiology

Pumps are transporters that are able to harness energy provided by other components in the cells to drive the movement of solutes across membranes, against their concentration gradient. This type of transport is called:

What will be an ideal response?

Biology & Microbiology