Foraminiferan and radiolarian lineages are related, but different in that:
a. one has a mineral based shell and the other does not
b. one has a chalk shell and the other has a silica shell
c. one has a shell and one does not have a shell
d. one is heterotrophic and the other is completely autotrophic
e. one has a single, large mitochondria and the other has many
b
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Which of the following is NOT a characteristic
of prions or prion diseases?
a. the protein that becomes a prion is common throughout the body b. they are misfolded proteins c. they form fibers that accumulate in the brain d. they result in tiny holes in the brain e. prion diseases are non-fatal
Why does increasing the temperature of a chemical reaction generally increase the rate of the reaction?
What will be an ideal response?
The Mesozoic era is often called the age of reptiles. Which of the following also occurred during this era?
A) the origin of animals in the oceans B) the appearance of the first plants on land C) the appearance of the first animals (tetrapods and insects) on land D) the appearance of the first mammals and flowering plants on land
At what age should screening for colorectal cancer begin?
A. in the 60s B. in the 50s C. in the 40s D. in the 20s E. in the 30s