click below
click below
Normal Size Small Size show me how
Physio 221
Chapter 3
Question | Answer |
---|---|
The small water channels in the cell membrane aer called | aquaporins |
An individual's entire set of DNA can be referred to as a | genome |
Diffusion of particles through a membrane by means of a carrier molecule is called | facilitated diffusion |
Water willmove through the cell membrane by | osmosis |
Which of the following terms is synonymous with tumor | neoplasm |
Which is true about the sodium and potassium pump | Three potassium ions are taken into the cell |
The correct order of the phases of mitosis is | prophase, metaphase, anaphase, telophase |
If a sequence of nitrogen bases in nucleic acid were AUCGA which of the following would be true about the nucleic acid | it contains ribose sugar |
Transcription can be best described as the | synthesis of mRNA |
Materials can be moved from a low concentration to a high concentration through | osmosis |
Which is not true about the sodium and potassium pump | sodium moves inot the cell and potassium moves out of the cell |
When the chromosomes align themselves across the equator of the spindle fibers it is characteristic of which phase of mitosis | metaphase |
NaCl would move through the cell membrane in which direction | both into and out of the cell |
A sequence of three bases forms an | codon |
Which of the following is not true of RNA | It contains deoxyribose sugar |
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 |
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 | The sie of transcription is within the nucleus, whereas the site of translation is in the cytoplasm. |
All of the following are examples of passive transport except | endocytosis |
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 |
Which of the following is not true of diffusion | Uses cellular energy |
Extensive weight training causes the muscle cells to | hypertrophy |
A DNA molecule is characterized by all of the following except | ribose sugar |
Diffusion requires | a concentration gradient |
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 |
During which stage of mitosis do the centrioles move to the opposite poles of the cell | prophase |
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 |
Phagocytosis is an example of | endocytosis |
All of the following occur as a result of meiosis except | chromosome number remains at 46 |