Another term for a hermaphroditic species is _____________.
a) homogametic
b) monoecious
c) dioecious
d) haploid
Ans: b) monoecious
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What breathing abnormalities can occur in neonatal mammals exposed to nicotine?
a. reduced ventilator output. b. increased duration of apneas. c. SIDS. d. reduced ventilator output and increased duration of apneas. e. reduced ventilator output, increased duration of apneas and SIDS.
An excitatory postsynaptic potential
a. is only one of several types of graded potential. b. has a hyperpolarizing effect. c. will drive the membrane away from its potential. d. is summed with an inhibitory postsynaptic potential at the input zone of a neuron in a process known as synaptic integration. e. is none of these.
Why few plants can grow well in clay soils, even when water content is high
What will be an ideal response?
Prior to using PCR to introduce mutations into DNA in vitro, what was a common method of mutagenesis used by scientists?
A. Physical manipulation of DNA (e.g. vortexing) B. Chemicals to induce mutations C. Self-fertilization of plants or inbreeding of animal models D. Using only old parents to set crosses in plants and animals