The theory of endosymbiosis is based on
A. evidence from the fossil record.
B. the experiments in which bacteria were made to grow in plant cells forming chloroplasts.
C. the knowledge that ribosomes are structures found in bacteria, plants, and animals.
D. similarities between chloroplasts and other organelles in animals.
E. the observations that chloroplasts and mitochondria resemble bacteria.
E. the observations that chloroplasts and mitochondria resemble bacteria.
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The cell membrane can be described most accurately as
A) permeable to most small molecules but impermeable to larger ones. B) permeable to only larger molecules. C) permeable to all molecules. D) permeable to some molecules and impermeable to others. E) impermeable to all polar molecules.
In general, mammals are not good at dispersing chili plant seeds because
a. the seeds die as they pass through the digestive tract. b. the mammals do not travel very far before they release the chili seeds. c. the chili seeds do not stick to the mammals' fur. d. chili seeds are dispersed mainly by the wind. e. the mammals are the main pollinators for the chili plant.
Which characteristic of a chloroplast makes it appear green?
a. The outer membrane b. The inner membrane c. The stroma d. The plastid e. The chlorophyll
In eukaryotic cells, histone proteins are actively synthesized during the S phase of the cell cycle
Indicate whether the statement is true or false