Consider an individual undergoing cancer chemotherapy, taking a drug that slows or stops cell division. Which one of the following is a likely side effect of such chemotherapy?
A) improved hair growth
B) anemia
C) weight gain
D) headaches
E) fluid retention
B
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In flowering plants, companion cells are connected via plasmodesmata to ____
a. trichomes b. tracheids c. sieve tube elements d. guard cells e. vessel members
The squid in this photograph contains a colony of Vibrio fischeri bacteria, which only luminesce while living within a squid. How is this behavior beneficial for V. fischeri bacteria?
a. Bioluminescent squid are more visible to free-floating V. fisheri bacteria, allowing them to join the colony.
b. Bioluminescent squid attract specific predators, allowing V. fischeri colonies to spread more rapidly.
c. Bioluminescent squid are less likely to be consumed by predators, protecting V. fischeri’s source of food.
d. Bioluminescence within squid provides ample light for V. fischeri to synthesize glucose via photosynthesis.
Answer the following statements true (T) or false (F)
1.The brain determines loudness of a sound by the number of neurons that are firing and the rate at which they fire. 2.All animal eyes have a macula. 3.The T1R genes for umami and sweet are intact in dogs and cows and nonfunctional in Toothed and Baleen whales. 4.Someone suffering from seasonal affective disorder could have an abnormal functioning adrenal gland. 5.Some neurotransmitters can have hormonal activity.
Any trait that is controlled by genes can be acted on by natural selection
Indicate whether the statement is true or false