Who observed cells in plant material?
a. Hooke
b. Koch
c. van Leeuwenhoek
d. Lister
e. Pasteur
Ans: a. Hooke
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In the simplest reflex arc, a(n) ________ synapses directly on a(n) ________
a. sensory neuron / motor neuron b. neuroglia / interneuron c. interneuron / sensory neuron d. motor neuron / neuroglia
The Hardy-Weinberg formula is valuable for the calculation of changes in
a. population size. b. speciation. c. allele frequencies. d. mutation. e. dimorphism.
Which population is most likely to be subject to the bottleneck effect?
A) Population A. B) Population B. C) Population C. D) They are all the same. E) It is impossible to tell from the information given.
Nitrogen is fixed by soil bacteria and is then incorporated into plant biomass and eventually into the food chain. What process(es) complete the global nitrogen cycle?
What will be an ideal response?