Generally, the energy for pumping protons outside of a plant cell comes most directly from
a. sunlight.
b. starch.
c. ATP.
d. diffusion.
e. glucose.
C
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Acellular slime molds form a large multinucleate mass called a(n) ________ .
Fill in the blank(s) with the appropriate word(s).
What type of cell communication is said to occur if a cell secretes a growth factor that then acts on neighboring cells to cause them to proliferate?
A. contact-to-contact signaling B. intercellular signaling C. autocrine signaling D. paracrine signaling E. endocrine signaling
Answer the question using the accompanying figure. The figure shows the alleles present at an STR locus in two
adults and four juveniles. Which of the juvenile(s) could be offspring of the adults?
a. juvenile 2 only b. juveniles 2 and 3 c. juveniles 1 and 4 d. juveniles 2 and 4 e. juveniles 1, 2, 3, and 4
What is the number of chromosomes in the parental cell?
a. 1 b. 2 c. 4 d. 8