All cells are fundamentally similar at a structural level. Using the accompanying diagram of a generalized human cell,
name as many of the numbered labels as you can to illustrate this idea. What will be an ideal response?
ANSWER: All cells have a plasma membrane, cytoplasm, membranous organelles, and a membranebound
nucleus (see labeling below). All cells’ shapes, internal organizations, and functions
are under genetic control.
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Some types of dinoflagellates (single-cell eukaryotes) are photosynthetic. They have flagella and can swim through the water. If you grow them in a container that is lit from the right side, the cells will swim to the right side of the container
This result suggests that ___________. A. dinoflagellates sense light B. dinoflagellates sense the Earth's magnetic field C. dinoflagellates sense a heterotrophic food source D. dinoflagellates swim in random directions E. dinoflagellates swim in response to temperature gradients
Compared to the less developed countries, the highly developed ones have a higher _____
a. death rate c. total fertility rate b. birth rate d. resource consumption rate
The nerve net of Hydra:a
contains a central control organ and connected neurons. b. sends electrical signals in only one direction. c. allows the organism to respond to stimuli approaching from any direction. d. produces a signal that intensifies as it radiates from its point of origin. e. cannot coordinate the movement of all tentacles at once.
Spontaneous generation was a theory defined by:
A) Aristotle B) Francesco Redi C) Robert Hooke D) Louis Pasteur E) someone else