What is the most common cause of a miscarriage?

a. cervical incompetence
b. genetic disorders of the embryo or fetus
c. infections
d. trauma
e. malnutrition of the mother


ANSWER: b

Biology & Microbiology

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These are straight filaments arising from the bacterial cell wall, making the bacterium look like porcupine

A. Capsules B. Endospores C. Fimbriaec D. Flagella

Biology & Microbiology

The complete set of 61 sense codons can be read by fewer than 61 distinct tRNA molecules according to ____

a. alternative splicing b. degeneracy c. exon shuffling d. the wobble hypothesis e. aminoacylation

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Disease-causing microorganisms are called

A. decomposers. B. fermenters. C. pathogens. D. prokaryotes. E. eukaryotes.

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In general, riboswitches regulate ________ in Gram-negative bacteria such as Escherichia and ________ in Gram-positive bacteria such as Bacillus.

A. transcription; translation B. replication; translation C. translation; transcription D. transcription; replication

Biology & Microbiology