Which plants drop their leaves on an annual basis?
A) annuals
B) perennials
C) deciduous
D) biennials
C
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Exchange of waste, nutrients, and oxygen occurs here. _____
A) Human chorionic gonadotropin
B) Zygote
C) Chorion
D) Morula
E) Folic acid
F) Fertilization
G) Blastocyst
H) Parturition
I) Cleavage
J) Ovulation
K) Placenta
L) Implantation
A motor unit is
A. a motor neuron and all of the muscle fibers to which it connects. B. a sensory neuron and two muscle fibers. C. a motor neuron and a whole muscle. D. a sensory neuron and several sarcomeres. E. a motor neuron and several sarcomeres.
Which component of a muscle does the calcium ion combine with to allow a contraction to occur?
A) myosin head B) actin C) troponin D) T tubule
All of the following are monosaccharides exceptÂ
A. deoxyribose. B. ribose. C. glycogen. D. glucose. E. fructose.