FREE BIOLOGY AND STUDY GAMES ABOUT BIOLOGY LAB

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FREE BIOLOGY AND STUDY GAMES ABOUT BIOLOGY LAB

MIDTERM EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -36 Questions and Answers -format set of multiple-choice -Expert-Verified 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.