Which of the following could be a choice to track the source of hospital-acquired infections?

a. DNA fingerprinting
b. determination of sugar-fermentation patterns
c. morphology determination
d. Gram stain
e. acid-fast stain


Ans: a. DNA fingerprinting

Biology & Microbiology

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The mechanism of DNA synthesis differs between the two new daughter strands during replication.  This is due to the fact that

A. the DNA strands run antiparallel to each other and the DNA polymerase can only add nucleotides to the 3' end of the growing strand. B. both daughter strands can't extend toward the replication fork because there would not be room for two DNA polymerase enzymes. C. one RNA primer attaches to the 5' end of the parent strand and the other primer to the 3' end. D. both RNA primers attach to the 3' end of the template strands, which are at opposite ends from each other.

Biology & Microbiology

The tip of an actively lengthening shoot is called a ____

a. flower stalk b. shoot cap c. lateral meristem d. terminal bud e. lateral bud

Biology & Microbiology

What is formed by the three layers of tissue that include the endoderm, mesoderm, and ectoderm?

A) zygote B) blastocyst C) gastrula D) fetus

Biology & Microbiology

The planned process of cell suicide is called:

A) meiosis. B)mitosis. C) apoptosis. D) metastasis. E) malignancy.

Biology & Microbiology