On what basis are fungi classified as Fungi Imperfecti, or Deuteromycota?
A. based on whether they have a cap containing gills
B. based on if they can grow in acidic soil
C. based on if the fungus lacks a sexual state
D. based on their ability to cause diseases in animals
E. based on if they have a special fungal sac
Answer: C
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At a minimum, primary producers require water, carbon dioxide, and light. These are things that are readily available in most ecosystems. However, we do not observe the same rates of net primary productivity in every region of the globe
Which of the following statements best reflects one reason why rates of productivity are not the same everywhere? A. Rates of net primary productivity are actually the same everywhere; scientists just need to calculate the rates relative to plant biomass in a given ecosystem. B. Although water is limited in certain ecosystems, nutrients that are scarce actually limit net primary productivity because they are necessary for growth. C. Although water is limited in certain ecosystems, irrigation would solve the problem and equalize rates of net primary productivity in every ecosystem. D. Rates of net primary productivity are actually limited by the amount of solar radiation. If net primary productivity were calculated as a yearly average, then this would show that ecosystems have the same rate of productivity.
__________ neurons detect stimuli. Fill in the blank(s) with the appropriate word(s)
In DNA replication, the lagging strand:a
is synthesized as a series of Okazaki fragments. b. is synthesized as a complementary copy of the leading strand. c. pairs with the leading strand by complementary base pairing. d. is made up entirely of RNA primers. e. is not synthesized until the synthesis of the leading strand is completed.
You are studying with a classmate who asks you about the concept of a replacement rate. She wants to know what happens to a population if the replacement rate is reached? She also assumes the average human replacement rate is 2.0. What would you tell her?
A. When replacement rate is reached, the population is in equilibrium. The replacement rate is equal to 2.0 to replace both mother and father. B. When replacement rate is reached, the population declines. The replacement rate is greater than 2.0 to make up for declining birth rates. C. When replacement rate is reached, the population is in equilibrium. The replacement rate is greater than 2.0 because some individuals die before they reproduce. D. When replacement rate is reached, the population declines. The replacement rate is lower than 2.0 to make up for increasing birth rates. E. When replacement rate is reached, the population increases. The replacement rate is lower than 2.0 to make up for increasing birth rates.