The __________ are excavates that lack functional mitochondria and Golgi
a. cryptomonads
b. chrysophytes
c. diplomonads
d. water molds
e. slime molds
C
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Cell plate formation
(a) occurs in plant cells but not in animal cells. (b) usually begins during telophase. (c) is a result of fusion of Golgi vesicles. (d) is all of the above.
Which of the following is associated with mental retardation in Down syndrome?
A. thickening of the muscles of the tongue B. elevated levels of purines in the blood C. increased tendency toward leukemia D. increased tendency toward cataracts E. accelerated rate of aging
Only pre-synaptic neurons are coated with myelin.
a. true b. false
Although poliovirus capsids contain several distinct proteins, these are synthesized as a single polypeptide then cleaved by proteases to produce the individual proteins.
Answer the following statement true (T) or false (F)