Cells with no nucleus
a. prokaryotic
b. eukaryotic
Ans: a. prokaryotic
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Fossil fuels are the result of buried organisms where low oxygen levels existed
Indicate whether the statement is true or false.
The two closely allied organ systems that allow for running, swimming, and flying under the direction of the nervous system are the _____ systems.
A. skeletal and endocrine B. muscular and endocrine C. muscular and skeletal D. circulatory and muscular E. circulatory and skeletal
The cuticle of a leaf is composed of
a. waxes. b. pectin. c. cellulose. d. cutin. e. all of these.
Why does glucose appear in the urine of a diabetic?
A. The carriers for glucose reabsorption reach their maximum rate of transport. B. The ascending limb of the loop of Henle secretes glucose into the urine. C. No glucose is filtered into the glomerular filtrate. D. The volume of urine is too great to filter. E. The kidneys produce glucose in diabetes.