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Botany Cell Homeostasis Review 3
Test Description: Test Review 3
Instructions: Answer all questions to get your test result.
1) A cell is the smallest unit that can carry on all the processes of life.
A
False
B
True
2) Robert Hooke observed cork cells.
A
False
B
True
3) Anton van Leeuwenhoek concluded that all plants are composed of cells.
A
True
B
False
4) DNA is synthesized in the cell nucleus
A
False
B
True
5) The main difference between prokaryotes and eukaryotes is that one of them lacks a cell membrane
A
False
B
True
6) The nucleus of the cell contains mitochondria.
A
False
B
True
7) . Diffusion is the process by which molecules move from an area of lower concentration to an area of greater concentration.
A
True
B
False
8) Membranes are selectively permeable if they allow only certain substances to diffuse across them.
A
True
B
False
9) When the concentration of solutes outside the cell is equal to the concentration of solutes inside the cell, the cell solution is isotonic relative to its environment.
A
False
B
True
10) A cell with high turgor pressure is probably in a hypotonic environment.
A
False
B
True
11) . In active transport, energy is required to move a substance across a cell membrane.
A
True
B
False
12) The sodium-potassium pump moves sodium and potassium ions against the concentration gradient.
A
False
B
True
13) A concentration gradient is the difference in concentration of a substance across space.
A
True
B
False
14) Osmosis is diffusion of any substance through a membrane.
A
False
B
True
*select an answer for all questions
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