Which of the following does NOT influence the rate of diffusion of a chemical across a plasma membrane?
Question 1 options:
| concentration gradient of the chemical across the membrane | |
| mass of the diffusing chemical | |
| distance that the chemical has to diffuse | |
| amount of ATP available | |
| temperature |
Question 2 (1 point)
During this phase of cell division, the centromeres split leading to separation and subsequent migration of the two members of a chromatid pair to opposite poles of the cells. The cleavage furrow also begins to develop during this phase.
Question 2 options:
| interphase | |
| prophase | |
| metaphase | |
| anaphase | |
| telophase |
Question 3 (1 point)
The major function of mitochondria is to
Question 3 options:
| move the cell. | |
| generate ATP. | |
| produce proteins. | |
| oxidize organelles. | |
| synthesize glycolipids. |
Question 4 (1 point)
In the diagram, this structure directs cellular activities.
Question 4 options:
| D | |
| F | |
| G | |
| A | |
| H |
Question 5 (1 point)
The difference in concentration of a specific chemical, like Na+, on the inside and outside of a plasma is referred as a(n)
Question 5 options:
| electrochemical potential. | |
| membrane potential. | |
| electrical gradient. | |
| concentration gradient. | |
| biological capacitance. |
Question 6 (1 point)
If the solute concentration is greater inside of the cell than outside the cell, water will move by osmosis
Question 6 options:
| into the cell. | |
| out of the cell. | |
| into and out of the cell at the same rate resulting in no net water movement. | |
| All of these answer choices are correct. | |
| None of these answers are correct. |
Question 7 (1 point)
In the diagram, which organelle is responsible for autophagy and autolysis?
Question 7 options:
| C | |
| B | |
| F | |
| J | |
| D |
Question 8 (1 point)
Specialized structures within a cell that have a characteristic shape and perform specific functions in cellular growth, maintenance and reproduction are called
Question 8 options:
| organelles. | |
| cytoskeletons. | |
| cytoplasm. | |
| cytosol. | |
| nuclei. |
Question 9 (1 point)
What compound would a cell lacking ribosomes be unable to make?
Question 9 options:
| lipids | |
| nucleotides | |
| proteins | |
| carbohydrates | |
| phospholipids |
Question 10 (1 point)
Most intravenous solutions are _____ with respect to blood cells?
Question 10 options:
| tonicity | |
| isotonic | |
| hypertonic | |
| osmotic | |
| hypotonic |
Question 11 (1 point)
In the diagram, which organelle is used to modify, sort and transport proteins?
Question 11 options:
| D | |
| I | |
| A | |
| J | |
| G |
Question 12 (1 point)
Which of the following is the correct sequence of events in phagocytosis shown in the figure?
Question 12 options:
| pseudopods surround particle > phagosome formed > fusion of lysosome and phagosome > digestion by lysosomal enzymes > residual body formed | |
| phagosome formed > pseudopods surround particle > fusion of lysosome and phagosome > digestion by lysosomal enzymes > residual body formed | |
| phagosome formed > pseudopods surround particle > fusion of lysosome and phagosome > residual body formed > digestion by lysosomal enzymes | |
| residual body formed > phagosome formed > pseudopods surround particle > fusion of lysosome and phagosome > digestion by lysosomal enzymes | |
| fusion of lysosome and phagosome > residual body formed > phagosome formed > pseudopods surround particle > digestion by lysosomal enzymes |
Question 13 (1 point)
What are the three main parts of a eukaryotic cell?
Question 13 options:
| plasma membrane, organelles, cytoplasm | |
| plasma membrane, organelles, nucleus | |
| plasma membrane, cytoplasm, organelles | |
| plasma membrane, cytoplasm, nucleus | |
| plasma membrane, cytosol, organelles |
Question 14 (1 point)
What structural components of the membrane are labeled (C) in the diagram?
Question 14 options:
| peripheral proteins | |
| cholesterol molecules | |
| pores | |
| integral proteins | |
| phospholipids |
Question 15 (1 point)
Which of the following is NOT a characteristic of the cytosol?
Question 15 options:
| primarily consists of water | |
| cation of electron transport chain carrier proteins | |
| site of many important chemical reactions | |
| often contains aggregates of triglycerides that form lipid droplets | |
| contains the enzymes of glycolysis |
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