Phosphorylation of ________ is directly required for chromosome condensation
A) condensin
B) mitotic cyclin
C) securin
D) ubiquitin ligase
E) histone H3
Answer: A
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A researcher notices that in a certain moth species, some females prefer to feed and lay eggs on domesticated solanaceous plants like potatoes and tomatoes. Other females prefer to feed and lay eggs on wild solanaceous plants like Datura. Both male and female moths primarily use scent to find these plants from afar. Females tend to mate where they feed, and the researcher finds a genetic basis for scent preference in these moths. Based on the above information, what might be occurring in this moth species?
A) divergence in sympatry B) divergence due to habitat fragmentation C) postzygotic isolation D) polyploidization
Which sensory system is associated with the occipital lobe of the brain?
A. vision B. hearing C. touch D. taste
When one atom loses an electron to another atom, it results in the formation of
A. a polar covalent bond and a new molecule. B. cations and anions that can form ionic bonds. C. a covalent bond between the two. D. many hydrogen bonds. E. a nonpolar covalent bond that is difficult to break.
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.