ch.4 mitochondria and chloroplasts: cellular generators

Question 1

mitochondria and chloroplasts are both:

Answer 1

surrounded by a double membrane and both contain their own DNA and protein synthesis machinery.
-they are both involved in energy metabolism.

Question 2

mitochondria

Answer 2

varies in size and shape and are found in all types of eukaryotic cells.
-bounded by 2 membranes: a smooth outer membrane and an inner folded membrane with numbers contiguous layers called cristae.

Question 3

the crustal partition in the mitochondrion into two compartments:

Answer 3

a matrix (in the inner membrane) and an outer compartment/ inter membrane space (lying between the two mitochondrial membranes.

Question 4

plants cells and cells of other eukaryotic organisms that carry out photosynthesis typically contain from one to several hundred _______.

Answer 4

chloroplasts

Question 5

chloroplasts

Answer 5

contain the photosynthetic pigment chlorophyll that gives most plants their green color

Question 6

symbiosis is

Answer 6

a close relationship between organisms of different species that live together

Question 7

theory of endosymbiosis proposes that

Answer 7

some of today’s eukaryotic organelles evolved by a symbiosis arising between two cells that were each free-living.