Give the three major principles of the cell theory.
What will be an ideal response?
(1) All organisms are made up of one or more cells. (2) Cells are the smallest living things. (3) Cells arise only from preexisting cells.
You might also like to view...
_____ is life’s primary source of energy.
a. Food b. Water c. Sunlight d. ATP
When bar-headed geese fly at very high altitudes (possibly over Mount Everest!), they breathe very thin air where the partial pressure of oxygen is very low compared to that at sea level. They are able to do this because they have a modified version of
the hemoglobin protein. To which of the following is their hemoglobin protein most likely similar in terms of its ability to bind oxygen? A) an adult human B) a human fetus C) a bird that lives at sea level D) an earthworm
Upwelling increases ______________ which can result in red tides.
a) viral load in plankton b) nutrient availability c) temperature d) stratification
Which of the following is not a type of intrinsic reproductive isolation?
a. Geographic isolation b. Mechanical isolation c. Behavioral isolation d. Gametic isolation e. Temporal isolation