Which of the following are characteristics of hydrogenosomes that distinguish them from mitochondria?
A. The inner membrane of hydrogenosomes is not highly folded.
B. Hydrogenosomes have no DNA.
C. Hydrogenosomes generate ATP by fermentation.
D. All of the choices are correct.
Answer: D
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In the context of the influenza virus, describe the mechanistic difference between an antigenic drift and an antigenic shift. Also indicate the result of each
What will be an ideal response?
The study of the relationships among organisms and the environment is
A. ethology. B. habitology. C. ergonomics. D. ecology. E. geology.
Turtle hatchling survivorship rate is low in many turtle species due to predation. Amanda researched the predatory rate on a species of turtle eggs in the Red River. The eggs were harvested from trapped turtles and the egg's cloaca film (reproductive discharge) was either washed off or left on once gathered. Research suggests that predators use the female's cloaca scent to locate the eggs.The eggs were only handled when wearing gloves and then reburied along islands where the turtles were trapped. The nests were monitored by cameras and manually on foot and data on nest predation were recorded.Based on the experimental design, what is the independent variable?
A. Number of hatchlings B. Time eggs spent in ground C. No cloaca film on eggs D. Inducing egg laying
When is the root-shoot axis established in the flowering plant Arabidopsis?
a. within hours after the seed germinates b. shortly after the eight-cell embryo stage c. during the torpedo stage of embryonic development d. by the first cell division of the embryo