A tissue is represented by a group of __________ adapted to carry out __________
a. closely associated, similar cells; specific functions
b. closely associated, different cells; specific functions
c. loosely associated, different cells; different functions
d. loosely associated, different cells; specific functions
e. closely associated, similar cells; different function
A
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An anaerobic reaction ________ .
a. occurs slowly b. occurs when a person is sedentary c. can be sustained for long periods of time d. requires oxygen e. does not require oxygen
The accompanying figure is of one of the most poisonous mushrooms. Four of the following statements about this fungus are true. Which is the exception?
a. Its spores are created by mitosis.
b. It is called the death cap.
c. It is often mistaken for a puffball.
d. It kills by causing liver and kidney failure.
e. It is a club fungus.
A scientist found an unweathered igneous rock that contained 0.025 g of potassium-40 and 0.075 g of argon-40. The half-life of potassium-40 is 1.3 billion years. Using the table from Figure 26.3 the age of the rock would be estimated to be
A. 1.3 billion years old. B. 2.6 billion years old. C. 0.050 billion years old. D. 0.001875 billion years old. E. 1.69 billion years old.
In autumn, leaves fall from deciduous trees as the trees go into a type of hibernation. What is the environmental trigger for these changes?
A) the presence of the harvest moon B) a decrease in temperature C) the high temperatures of summer D) a decrease in the amount of sunlight