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Chap 6 & 7
Week 3 Cell Function Growth & Development
| Question | Answer |
|---|---|
| Phagocytosis is an example of: | endocytosis. |
| The small water channels in the cell membrane are called: | aquaporins |
| Extensive weight training causes the muscle cells to: | hypertrophy. |
| Diffusion requires | a concentration gradient |
| The correct order of the phases of mitosis is: | prophase, metaphase, anaphase, telophase. pie, muffin, apple, treats |
| When the chromosomes align themselves across the equator of the spindle fibers, it is characteristic of which phase of mitosis? | Metaphase |
| Diffusion of particles through a membrane by means of a carrier molecule is called: | Facilitated Diffusion |
| During which stage of mitosis do the centrioles move to the opposite poles of the cell? | Prophase Poles=Prophase |
| An individual’s entire set of DNA can be referred to as a: | Genome |
| NaCl would move through the cell membrane in which direction? | Both into and out of the cell |
| 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. |
| Water will move through the cell membrane by: | Osmosis |
| A sequence of three bases forms a(n): | Codon |
| 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. |
| Which of the following statements is true? Amino acid chains form DNA. The site of transcription is within the nucleus, whereas the site of translation is in the cytoplasm. Uracil is present in DNA in place of thymine. | The site of transcription is within the nucleus, whereas the site of translation is in the cytoplasm. |
| Which of the following is not true of diffusion? | Uses cellular energy |
| Which is true about the sodium and potassium pump? | Three sodium ions are taken out of the cell. |
| 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. |
| Materials can be moved from a low concentration to a high concentration through: | Active Transport |
| Which is not true about the sodium and potassium pump? | Sodium moves into the cell and potassium moves out of the cell. |
| Which of the following terms is synonymous with tumor? | Neoplasm |
| 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 |
| Transcription can be best described as the: | synthesis of mRNA. |
| All of the following are examples of passive transport except: | endocytosis |
| Which of the following is not true of RNA? | It contains deoxyribose sugar. |
| All of the following occur as a result of meiosis except: chromosome number remains at 46. primitive sex cells become mature gametes. the cells become haploid. meiosis occurs in two steps. | chromosome number remains at 46. |
| A saline solution that contains a higher concentration of salt than a red blood cell would be: | hypertonic. |
| Twenty-three chromosomes per cell in humans is referred to as: | haploid |
| A DNA molecule is characterized by all of the following except: double helix shape. obligatory base pairing. ribose sugar. phosphate groups. | ribose sugar. |
| 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 |
| 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. |
| A molecule or other agent that alters enzyme function by changing its shape is called a(n) | allosteric effector. |
| Glycolysis occurs in what part of the cell. | cytoplasm |
| The component that distinguishes one nucleotide from another is the | nitrogen base. |
| In the DNA molecule, a sequence of three base pairs forms a(n) | codon. |
| The total number of 46 chromosomes per cell is referred to as _________ number. | diploid |
| Which of the following phases is NOT correctly matched with its description? | anaphase – mitosis is complete |
| 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. |
| The result of meiosis is | four daughter cells that are haploid. |
| RNA makes proteins by | translation. |
| 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. |
| In the electron transport system, the final electron acceptor is | oxygen. |
| Which of the following is an active transport process? | endocytosis |
| Mitosis is subdivided into four phases, including all of the following except | karyophase. |
| In which stage of mitosis do chromosomes move to the opposite ends of the cells along the spindle fibers? | anaphase |
| Meiotic division occurs in | primitive sex cells. |
| Transcription can best be described as the | synthesis of mRNA. |
| Proteins that act as catalysts are called | enzymes. |
| Diffusion moves | down a concentration gradient. |
| Facilitated diffusion is not an active transport process because it | does not depend on cell energy. |
| 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. |
| A chemical that reduces the amount of activation energy needed to start a chemical reaction is a(n) | catalyst. |
| The two processes of protein synthesis are | transcription and translation. |
| Replication of DNA occurs in which phase of interphase? | S phase |
| Which of the following is not a characteristic of meiosis? | two haploid gametes |
| Water pressure that develops in a solution as a result of osmosis into that solution is called _____ pressure. | osmotic |
| Meiosis is called “reduction division” because | the number of chromosomes is reduced by half. |
| Normal mitosis results in | cells that are genetically identical to the parent cell. |
| Diffusion can be defined as | the net movement of molecules from a region of higher concentration to a region of lower concentration. |
| The cell process in which microorganisms or other large particles are engulfed is called | phagocytosis |
Created by:
Crystal C
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