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FREE BIOLOGY AND STUDY GAMES ABOUT BIOLOGY LAB
MIDTERM EXAM QUESTIONS
Qs and Ans Expert- Explanation
This Exam contains:
-Guarantee passing score -36 Questions and Answers -format set of multiple-choice -Expert- Explanation
Question 1: resolving power
Answer:
The extent to which object detail in an image is preserved during the magnifying process.
Question 2: parcentral
Answer:
center of field of view remains the same for each objective.
Question 3: Eukaryotic
Answer:
cells with a nucleus (plant, animal)
Question 4: What 3 structural features do all eukaryotic cells share?
Answer:
1.plasma membrane 2.dna 3.cytoplasm
Question 5: diffusion
Answer:
the movement of solute molecules from a region of high concentration to one of lower concentration.
Question 6: osmosis
Answer:
movement of water across selectively permeable membranes.
Question 7: polysaccharide
Answer:
more than two monosaccharides bonded together
Question 8: solution
Answer:
combination of solvent and solute
Question 9: Solvent
Answer:
dissolving medium
Question 10: concentration gradient
Answer:
the difference in concentration of like molecules in two regions
Question 11: 3 Principles of Cell Theory
Answer:
1.All organisms are composed of cells 2.The cell is the basic living unit of organization
- All cells arise from preexisting cells.
Question 12: equilibrium
Answer:
the concentration of solvent and solute molecules becomes equally distributed.
Question 13: turgid
Answer:
water moves into cell creating turgor pressure which presses cytoplasm against the cell wall.
Question 14: plasmolysis
Answer:
cell losing water causing wilting
Question 15: Macromolecule
Answer:
large organic materials of which all cells are made.
Question 16: DNA
Answer:
stores genetic information
Question 17: depth of field
Answer:
distance through which you can move the specimen and still have it remain in focus.
Question 18: nucleus
Answer:
a double membrane-bounded compartment within the cytoplasm
Question 19: Magnification
Answer:
The amount that the image of an object is enlarged.
Question 20: monosaccharide
Answer:
single sugar molecules
Question 21: lipid
Answer:
oily or greasy compounds insoluble in water, but dissolvable in non-polar solvents.
Question 22: 3 bacterial shapes
Answer:
1.coccus 2.bacillus 3.spirillum
Question 23: cytoplasm
Answer:
everything within the plasma membrane that is not part of the DNA region.
Question 24: enzyme-substrate complex
Answer:
substrate and enzyme reacting together
Question 25: disaccharide
Answer:
two monosaccharides joined together
Question 26: parfocal
Answer:
image remains in coarse focus
Question 27: solute
Answer:
dissolved substance
Question 28: selective permeability
Answer:
allowing some substances to move easily while completely excluding others.
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