Antiseptic surgery was pioneered by ________.

A. Kitasato
B. Pasteur
C. Jenner
D. Lister


Answer: D

Biology & Microbiology

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Photosynthesis ceases when leaves wilt, mainly because _____

A) the chlorophyll in wilting leaves is degraded B) flaccid mesophyll cells are incapable of photosynthesis C) stomata close, preventing carbon dioxide from entering the leaf D) photolysis, the water-splitting step of photosynthesis, cannot occur when there is a water deficiency E) accumulation of carbon dioxide in the leaf inhibits enzymes

Biology & Microbiology

Which of the following is NOT true of polyploidy?

a. It produces twinning in humans. b. It occurs in plants without negative effects. c. It results in multiple sets of chromosomes. d. It could produce three copies of each chromosome. e. It produces multiple copies of alleles.

Biology & Microbiology

In 1969 RH Whittaker proposed a 5 kingdom classification based mainly on?

a. Size and color of cells b. Ability to reproduce and develop c. Cell structure and how an organism derived nutrition d. Electronic microscopy and biochemisrty e. RNA sequence analysis

Biology & Microbiology

What two major types of recombination involve exchange between duplex DNAs?

What will be an ideal response?

Biology & Microbiology