Question

2. Which of the following best describes the logic of hypothesis based science?

A) If I generate a testable hypothesis, tests and observations will support it.

B) IF my prediction is correct, it will lead to a testable hypothesis.

C) IF my observations are accurate, they will prove my hypothesis.

D) If my hypothesis is correct, I can expect certain test results.

E) IF my experiments are set up right, they will lead to a testable hypothesis.

3. Which of the following statements is correct about diffusion?

A) It is very rapid over long distances.

B.) It requires an expenditure of energy by the cell.

C.) It is a passive process in which molecules move from a region of higher concentration to lower concentration.

D) It is an active process in which molecules move from a region of lower concentration to high.

E.)IT requires integral proteins in the cell membrane.

4. A patient has had a serious accident and lost a lot of blood. In attempt to replenish ….. To the volume of blood lost, is transferred into one of his veins what will be the…. Transfusion.

A) IT will have no unfavorable effect as long as the water is free of viruses and bacteria.

B) The patient’s red blood cells will shrivel up because the blood fluid is hypotonic compared to ….

C) The patients red blood cells will shrivel up because the blood fluid is hypertonic compared to ….

D) The patients red blood cells will swell because the blood fluid is hypotonic compared to….

E) The patients red blood cells will burst because the blood fluid is hypertonic compared to….

5. Celery stalks that are immersed in fresh water for several hours become stiff and ha…. Solution become limp and soft. From this we can deduce that the cells of the celery stalk ….

A) Hypotonic to both fresh water and salt solution

B) Hypertonic to both fresh water and salt solution.

C Hypertonic to water fresh water buy hypotonic to salt solution.

D) Hypotonic to fresh water but hypertonic to the salt solution.

E) Isotonic with fresh water but hypotonic to the salt solution.

6) Which of the following statements correctly describes the normal tonicity conditions…

A) The animal cell is in a hypotonic solution, and the plant cell is in in a hypertonic solution.

B) The animal cell is in an isotonic solution, and the plant cell is in a hypertonic solution.

C) The animal cell is in a hypertonic solution, and the plant cell is an isotonic solution.

D) The animal cell is in an isotonic solution, and the plant cell is in a hypotonic solution.

E) The animal cell is in a hypertonic solution, and the plant cell is in a hypotonic solution.

7. Which of the following statements regarding enzymes is true?

A) Enzymes decrease the free energy change of reaction n

B) Enzymes increase the rate of reaction.

C) Enzymes change the direction of chemical reactions.

D) Enzymes are permanently altered by the reactions they catalyze.

E) Enzymes prevent changes in substrate concentration.

Answer 1

2: If my hypothesis is correct, I can expect certain test results best describes the logic of hypothesis based science.

3: It is a passive process in which molecules move from a region of higher concentration to lower concentration.

4: he patients red blood cells will swell because the blood fluid is hypotonic compared to

5: Hypertonic to water fresh water buy hypotonic to salt solution.

6: The animal cell is in an isotonic solution, and the plant cell is in a hypotonic solution.

7: Enzymes increase the rate of reaction.