Week 3 Chapter 6 & 7
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Diffusion moves | down a concentration gradient
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| Osmosis can be defined as | the net movement of water molecules from a region of lower solute concentration to a region of higher solute concentration
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| Mitosis is subdivided into four phases, including all of the following except | karyophase
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| The result of meiosis is | four daughter cells that are haploid
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| Which of the following is an active transport process? | endocytosis
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| In which stage of mitosis do chromosomes move to the opposite ends of the cells along the spindle fibers? | anaphase
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| Water pressure that develops in a solution as a result of osmosis into that solution is called _____ pressure. | osmotic
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| Glycolysis occurs in what part of the cell? | cytoplasm
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| In the DNA molecule, a sequence of three base pairs forms a(n) | codon
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| Normal mitosis results in | cells that are genetically identical to the parent cell
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| The component that distinguishes one nucleotide from another is the | nitrogen base
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| Transcription can best be described as the | synthesis of mRNA
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| A chemical that reduces the amount of activation energy needed to start a chemical reaction is a(n) | catalyst
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| Which of the following is not a characteristic of meiosis? | two haploid gametes
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| The cell process in which microorganisms or other large particles are engulfed is called | phagocytosis
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| RNA makes proteins by | translation
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| The two processes of protein synthesis are | transcription and translation
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| The total number of 46 chromosomes per cell is referred to as _________ number. | diploid
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| Diffusion can be defined as | the net movement of molecules from a region of higher concentration to a region of lower concentration.
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| If oxygen is available, the pyruvate molecules formed by glycolysis are prepared to enter the next phase of aerobic cellular respiration, called the | citric acid cycle
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| Meiosis is called “reduction division” because | the number of chromosomes is reduced by half
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| Red blood cells are placed in an unknown solution. After 45 minutes, the cells are examined and determined to have decreased in size. The unknown solution is | hypertonic
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| Which of the following phases is NOT correctly matched with its description? | anaphase – mitosis is complete
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| Meiotic division occurs in | primitive sex cells
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| In the electron transport system, the final electron acceptor is | oxygen
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| A molecule or other agent that alters enzyme function by changing its shape is called a(n) | allosteric effector
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| If red blood cells containing 10% solute are placed in a solution containing 10% solute, what will happen? | Water will move into and out of the cells at equal rates
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| Facilitated diffusion is not an active transport process because it | does not depend on cell energy
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| Replication of DNA occurs in which phase of interphase? | S phase
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| Proteins that act as catalysts are called | enzymes
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| Which of the following terms is synonymous with tumor? | Neoplasm
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| Which of the following is not true of RNA? | It contains deoxyribose sugar
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| When the chromosomes align themselves across the equator of the spindle fibers, it is characteristic of which phase of mitosis? | Metaphase
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| Which of the following statements is true? | The site of transcription is within the nucleus, whereas the site of translation is in the cytoplasm.
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| During which stage of mitosis do the centrioles move to the opposite poles of the cell? | Prophase
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| Which of the following is not true of diffusion? | Uses cellular energy
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| All of the following are examples of passive transport except: | endocytosis.
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| Twenty-three chromosomes per cell in humans is referred to as: | haploid.
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| The physical process by which water and solute move through a membrane when a hydrostatic pressure gradient exists across the membrane is the process of: | filtration.
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| The correct order of the phases of mitosis is: | prophase, metaphase, anaphase, telophase.
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| Water will move through the cell membrane by: | osmosis.
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| Materials can be moved from a low concentration to a high concentration through: | active transport.
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| Diffusion of particles through a membrane by means of a carrier molecule is called: | facilitated diffusion.
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| A saline solution that contains a higher concentration of salt than a red blood cell would be: | hypertonic.
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| NaCl would move through the cell membrane in which direction? | Both into and out of the cell
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| A sequence of three bases forms a(n): | codon.
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| All of the following occur as a result of meiosis except: | chromosome number remains at 46.
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| If a sequence of nitrogen bases in nucleic acid were A-U-C-G-A, which of the following would be true about the nucleic acid? | It contains ribose sugar.
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| Diffusion requires: | a concentration gradient.
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| Which is true about the sodium and potassium pump? | Three sodium ions are taken out of the cell.
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| Phagocytosis is an example of: | endocytosis.
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| The small water channels in the cell membrane are called: | aquaporins.
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| Two solutions of different concentrations of glucose are separated by a membrane that allows both glucose and water to pass through. When dynamic equilibrium is reached, there will be: | an even exchange of material across the membrane.
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| Which is not true about the sodium and potassium pump? | Sodium moves into the cell and potassium moves out of the cell.
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| Extensive weight training causes the muscle cells to: | hypertrophy.
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| An individual’s entire set of DNA can be referred to as a: | genome
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| Transcription can be best described as the: | synthesis of mRNA.
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| A DNA molecule is characterized by all of the following except: | ribose sugar.
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| A membrane carrier structure attracts a solute to a binding site, changes shape, and releases the solute on the other side of the cell membrane. This describes the process of: | carrier-mediated transport.
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| The pairing of bases of a strand of DNA is obligatory. If a strand of DNA were composed of the base sequence of ATCG, what would be the obligatory sequence of its opposing base pairs? | TAGC
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