The enzyme rubisco combines ribulose bisphosphate with _____ in the first step of the Calvin cycle.
a) glucose
b) ATP
c) carbon monoxide
d) organic compounds
e) carbon dioxide
Answer: e) carbon dioxide
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When a potassium ion (K+) moves from the soil into the vacuole of a cell on the surface of a root, it must pass through several cellular structures. Which of the following correctly describes the order in which these structures will be encountered by the
ion? A) plasma membrane ? primary cell wall ? cytoplasm ? vacuole B) secondary cell wall ? plasma membrane ? primary cell wall ? cytoplasm ? vacuole C) primary cell wall ? plasma membrane ? cytoplasm ? vacuole D) primary cell wall ? plasma membrane ? lysosome ? cytoplasm ? vacuole E) primary cell wall ? plasma membrane ? cytoplasm ? secondary cell wall ? vacuole
Because of the _____________________, traits carried by early settlers are found in a large fraction of the descendent population
Fill in the blank(s) with correct word
What is a primary focus of landscape ecology?
A) individual behavior B) spatial heterogeneity C) species interactions D) population growth
What is the role of a mixed-function oxidase?
a. Breaks down oxygen so that insects can absorb it b. It is part of the internal detoxification system c. It protects plants by oxidizing the parts (e.g. seeds) that insects like to it d. It is repellent to insects