In addition to investigations with bacteria that led to him being considered the Father of Microbiology, Pasteur also
A. found that some molecules can exist as stereoisomers.
B. created aspartame.
C. separated organic acids using a microscope.
D. discovered polarized light.
E. found that some molecules can exist as stereoisomers AND separated organic acids using a microscope.
E
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Intercalating agents, like acridine orange and ethidium bromide, lead to mutagenesis by pushing DNA base pairs apart, which can lead to insertions or deletions
Indicate whether the statement is true or false.
Choose the option that places the following events in plant defense in the correct order:
1. Plant cell recognizes double-stranded RNA (dsRNA) as foreign and cleaves it into fragments. 2. Single-stranded RNA (ssRNA) molecules bind to the protein-bound small interfering RNA (siRNA) and are destroyed. 3. A virus infects the host plant, injecting ssRNA into the cell. 4. Viral genome is replicated and dsRNA molecules are formed. 5. siRNA bind to a plant protein complex, which retains only one of the RNA strands. A. 3 2 1 4 5 B. 1 2 4 3 5 C. 5 3 4 2 1 D. 1 2 3 4 5 E. 3 4 1 5 2
Select the hydrogen acceptor molecule that stores electrons in the process of photosynthesis
a. nicotinamide adenine dinucleotide phosphate (NADP+) b. nicotinamide adenine dinucleotide (NAD+) c. flavin adenine dinucleotide (FAD) d. adenine triphosphate (ATP) e. adenine diphosphate (ADP)
What do both the C4 and CAM pathways of photosynthesis allow plants to do?
A) to perform photosynthesis in the absence of carbon dioxide B) to outcompete C3 plants in cool, dry conditions C) to keep stomata partially or completely closed during the hottest parts of the day D) to take up carbon dioxide at night and then store it as an acid until the day