Response to a stimulus, such that the effect of the stimulus is counteracted, is called ________ feedback
A) positive
B) simple
C) holistic
D) negative
D
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Among the types of microorganisms, the ________ are noncellular.
A. protozoans B. bacteria C. helminths D. viruses
Which hormone is detected in a pregnancy test?
A) human chorionic gonadotropin hormone made by the early embryo B) progesterone made by the corpus luteum C) luteinizing hormone made by the pituitary D) estrogen made by the ovary
Select the answer choice that best describes facilitation
a. a species interaction that modifies and enhances the local environment for other species b. a species interaction that modifies and detracts from the local environment, inhibiting other species c. an interaction between members of a population that enhances the local environment for other members of the same population d. an interaction between members of a population that detracts from the local environment, inhibiting other members of the same population e. a species interaction that enhances the local environment for a previously extant species
What are the sporangia of the bread mold Rhizopus?
a) vegetative structures with no role in reproduction b) sexual structures that produce diploid spores c) sexual structures that produce haploid spores d) asexual structures that produce haploid spores e) asexual structures that produce diploid spores