Fossils of plants found in deeper geologic layers do not show vascular tissues, while fossils in shallower geologic layers include some specimens with and some without vascular tissues. Thus, vascular tissue in plants is considered a ____ character.
a. ancestral
b. mosaic
c. primitive
d. derived
e. physiologically essential
D
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The high heat of vaporization of water helps you to feel cooler when you sweat because the transition of water from a liquid to a gas requires a ______ of energy to break hydrogen bonds. The energy is _____ from heat produced by your body, thus helping to lower the surface temperature of your body.
A. release; released B. release; obtained C. input; obtained D. input; released
Earthworms perform all EXCEPT which of the
following? a. chewing of food b. respiration c. tillage of the soil d. movement using chaetae e. excretion of water
A scientist performs an experiment in which they create an artificial cell with a selectively permeable membrane through which only water can pass. They inject a 5M solution of glucose into the cell and then place the cell into a beaker containing 10M glucose. What effect do you expect to observe?
A. No net change in cell weight B. Water moves out of the cell C. Water moves into the cell D. Glucose moves into the cell E. Glucose moves out of the cell
Cell membranes consist mainly of a __________.
A) carbohydrate bilayer and proteins B) protein bilayer and phospholipids C) lipid bilayer and proteins