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
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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
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
Disease-causing microorganisms are called
A. decomposers. B. fermenters. C. pathogens. D. prokaryotes. E. eukaryotes.
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