Q1 And Q2 Review Question Preview (ID: 34555)
Review For Marking Periods 1 And 2.
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9. Which of the following statements best describes the lipid bilayer of a cell membrane?
a) hydrophilic heads face the outside of the cell while hydrophobic tails face the inside of the cell
b) hydrophilic heads face the inside and outside of the cell while hydrophobic tails face each other
c) hydrophilic heads face each other while hydrophobic tails face the inside and outside of the cell
d) Nonpolar molecules are positioned towards the outer edges of the bilayer.
10. Exocytosis is like a(n)
a) outgoing international flight.
b) a child going down the slide.
c) a cruise shipping letting guests into the boat.
d) placing a drop of dye into a cup of water.
8. Name the phases of the cell cycle in order.
a) prophase, metaphase, anaphase, and telophase
b) interphase, cytokinesis, mitosis
c) interphase, prophase, metaphase, anaphase, telophase, and cytokinesis
d) G1, S, and G2
7. Why might raising the temperature of an enzyme's environment slow the rate at which the rate occurs?
a) It kills the enzymes.
b) The substrate denatures
c) The active site changes shape.
d) The enzymes work best in higher temperatures.
5. Which organelle makes proteins?
a) ribosomes
b) nucleus
c) mitochondria
d) chloroplast
6. Which of the following suggests that the shape of an enzyme determines the enzyme’s function (what it does)?
a) Enzymes are specific to a substrate.
b) Enzymes can operate in a wide range of environmental conditions.
c) Enzymes are activated by neighboring molecules.
d) Enzymes lower the activation energy.
3. Enzymes are made of amino acids. Which macromolecule are enzymes?
a) lipids
b) proteins
c) nucleic acids
d) carbohydrates
4. Potato pieces are placed into a solution. The mass of the pieces are taken and shows that they gained mass. What type of solution were the potato pieces placed in?
a) water
b) hypertonic
c) isotonic
d) hypotonic
1. Which organelle is only found in plant cells?
a) chloroplast
b) mitochondria
c) nucleus
d) cell membrane
2. Which of the following is best described as pumping ions against the concentration gradient?
a) osmosis
b) endocytosis
c) protein pumps
d) diffusion
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