The first species to live on new land, such as that formed from volcanic lava, are called________.
a) climax community
b) keystone species
c) foundation species
d) pioneer species
Answer: b) keystone species
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__________ are regions in an organism’s DNA that
encode information about heritable traits. Fill in the blank(s) with the appropriate word(s).
What does one call a mutation that occurs in a DNA sequence that changes the amino acid specified by that sequence?
What will be an ideal response?
Which of the following regulates progression through the phases of the cell cycle?
a. fluctuating concentrations of cyclin-dependent kinases b. fluctuating concentrations of microtubules c. fluctuating concentrations of cyclins d. fluctuating concentrations of actin
Which of the following is a function of the skeletal system?
Production of red blood cells Regulation of body temperature Removal of metabolic waste Synthesis of vitamin D