Dopamine is (i)_____________. Degeneration of dopaminergic neuron is known as (ii)_______________.
a) (i) chatecholamine neurotransmitter, (ii) Parkinson's disease
b) (i) amino acid neurotransmitter, (ii) Parkinson's disease
c) (i) chatecholamine neurotransmitter, (ii) anencephaly
d) (i) amino acid neurotransmitter, (ii) anencephaly
Answer: a) (i) chatecholamine neurotransmitter, (ii) Parkinson's disease
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What does the ABC model of flower development attempt to explain?
A) how different combinations of gene products trigger the formation of different floral organs B) why petals are found on the inside of the whorl of sepals instead of on the outside C) why the four types of floral organs occur in whorls D) why apical meristems are converted to floral meristems in response to specific cell-to-cell signals
Because it is an enclosed compartment of fluid under pressure, the coelom can serve as a
_____, which shapes the body of soft animals. a. food vessel b. pressure balloon c. hydrostatic skeleton d. cartilaginous skeleton e. storage compartment
Which protist clade (supergroup) is characterized by their greatly modified mitochondria?
a. excavates b. unikonts c. rhizarians
d. archaeplastids e. chromalvolates
Density-independent limiting factors that can affect a population include
a) predation, parasitism, and human disturbances b) competition, changes of season, and natural disasters c) parasitism, predation, and competition d) human disturbances, earthquakes, and droughts