All fungi gain the raw materials to build and maintain their cells by absorption from the environment
1.True
2.False
1
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There is an influx of which ion into the synaptic knob triggering the vesicles containing neurotransmitter to move towards the presynaptic membrane
A) calcitonin. B) calcitriol. C) calmodulin. D) calcium E) calcitropin.
Place the following in developmental order beginning with the earliest event
1) limb buds appear 2) face begins to look human 3) muscles differentiate 4) downy hair covers the fetus 5) sex can be determined by external inspection a. 3, 1, 2, 4, 5 b. 1, 3, 4, 2, 5 c. 1, 3, 2, 5, 4 d. 1, 2, 3, 4, 5 e. 1, 3, 5, 2, 4
What is the most outstanding characteristic of prokaryotic cells?
a. Prokaryotes have an elaborate system of internal membranes. b. Prokaryotic cells do not have a cell wall. c. Prokaryotic cells contain energy-collecting pigments. d. Prokaryotic cells do not have a nuclear membrane. e. Prokaryotic cells possess a variety of organelles.
An experiment involves the inoculation bacteria onto a variety of media with NaCl concentrations ranging from 1% to 25%. Which of these media is most likely to be isotonic with the bacterial cells?
1% NaCl 5% NaCl 10% NaCl 25% NaCl