Answer the following statements true (T) or false (F)
1.Insects have compound eyes.
2.In humans, taste buds are most highly concentrated on the inside surface of the lips of the mouth.
3.Sensory adaptation occurs when perception of one sense declines due to repeated stimulation.
4.The rods and cones in the retina transduce light energy into action potentials, which can then travel to the brain for processing.
5.Rod cells allow us to see at night and provide black and white vision.
1.TRUE
2.FALSE
3.TRUE
4.TRUE
5.TRUE
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Failure to refrigerate a urine culture specimen when a long time will elapse between specimen collection and delivery to the laboratory is most apt to result in:
A) an abnormally high colony count B) an abnormally low white blood cell count C) contamination of the specimen by members of the patient's indigenous microflora D) death of the pathogen
An identifying structural characteristic of phloem is ________
a. mesophyll b. vessels of dead cells c. tracheids d. sieve tubes
In a hydrangea plant, the color blue (B) is dominant to the color white (b). What is the probability that offspring will be blue?
a. 75% b. 50% c. 25% d. 100%