Assume that a plant is suffering from drought and is beginning to wilt. Which cell component is most likely being affected, and what type of molecule is being lost from this structure?
A) endoplasmic reticulum; protein
B) Golgi apparatus; water
C) lysosome; enzymes
D) vacuole; water
D
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Where would you expect to find proteins responsible for controlling the substances that enter and leave
mitochondria?
a. plasma membrane of the cell b. inner mitochondrial membrane c. outer mitochondrial membrane d. nuclear membrane e. lysosomal membrane
What is a benefit of swarming behavior? a. Increases the likelihood of fertilization
b. Finding individuals to mate with long-term. c. Synchronization to lunar cycles. d. Bringing juvenile individuals together to create social bonds.
Which of the following stimulates fibroblasts to proliferate and thus heal a wound?
a. EGF b. NGF a. NO d. PDGF
Human skin color is an outcome of interactions among the products of about how many genes?
A. 5 B. 20 C. 75 D. 150 E. 350