A symbiotic association between a fungus and a green alga or a cyanobacterium is called a
A. lichen.
B. mycorrhiza.
C. kelp.
D. mushroom.
E. protist.
Answer: A
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In the context of vision, what does accommodation mean?
a. lack of receptor response to continued light signal b. changing the lens shape c. moving the lens closer to or further away from the retina in order to focus the image d. keeping the lens under tension to allow for image focusing e. preventing light from scattering upon entry to the eye
Neuromasts are always located on the fish's body surface
Indicate whether the statement is true or false.
All of the following statements about the endocrine system are TRUE EXCEPT which one?
A) Many hormones are not able to cross the blood-brain barrier. B) Hormones are distributed via the circulatory system. C) Hormones exert their effects on cells that have the specific hormone receptor. D) Hormones act more quickly than the nervous system. E) The endocrine system and the nervous system frequently interact.
Manipulation of the genetic makeup of cells or whole organisms is known as
A) genetic analysis. B) DNA splicing. C) molecular biology. D) genetic engineering. E) genomic splicing.