About 80% of all living gymnosperm species belong to the phylum ____
a. Anthophyta
b. Cycadophyta
c. Ginkgophyta
d. Gnetophyta
e. Coniferophyta
ANSWER: e
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Of the asaccharolytic, oxidase-positive bacilli that do not grow on MacConkey agar, which one of the following organisms is generally associated with mixed infections resulting from bites or clenched-fist wounds?
a. Eikenella corrodens b. Weeksella virosa c. Pseudomonas maltophilia d. Sphingomonas paucimobilis
Warm, still water holds __________oxygen than cold
Fill in the blank(s) with correct word
With the sequence of the gene-coding regions of the human genome in hand and the development of newer
sequencing methods, scientists ____. a. now know that the types of mutations present in all cancers are very similar b. can now sequence and analyze the protein-coding genes in cancer cells c. are still unable to systematically identify all the mutations present in a cancer cell d. found that the number of mutational events that occur during the transition from normal to malignant cells is much smaller than previously thought e. found that most tumors had at least 100 mutations in common with any other tumor, emphasizing the common origin of cancer
The reaction: pyruvate + CoA + NAD+ ? acetyl CoA + CO2 + NADH, is catalyzed by pyruvate dehydrogenase. If an inhibitor of this enzyme was added to cells, then ________ levels in the cytoplasm would increase.
A. CO2 B. pyruvate C. NADH D. acetyl CoA