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Kim Ferguson

Physiology Week 3

QuestionAnswer
Which of the following phases is NOT correctly matched with its description? anaphase – mitosis is complete
Water pressure that develops in a solution as a result of osmosis into that solution is called _____ pressure. osmotic
In the electron transport system, the final electron acceptor is oxygen.
Meiotic division occurs in primitive sex cells.
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.
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 result of meiosis is four daughter cells that are haploid.
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.
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.
The total number of 46 chromosomes per cell is referred to as _________ number. diploid
The two processes of protein synthesis are transcription and translation.
Which of the following is not a characteristic of meiosis? two haploid gametes
Which of the following is an active transport process? endocytosis
RNA makes proteins by translation.
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.
Facilitated diffusion is not an active transport process because it does not depend on cell energy.
Mitosis is subdivided into four phases, including all of the following except karyophase.
Proteins that act as catalysts are called enzymes.
Transcription can best be described as the synthesis of mRNA.
Diffusion moves down a concentration gradient.
A molecule or other agent that alters enzyme function by changing its shape is called a(n) allosteric effector.
The cell process in which microorganisms or other large particles are engulfed is called phagocytosis.
Diffusion can be defined as the net movement of molecules from a region of higher concentration to a region of lower concentration.
Glycolysis occurs in what part of the cell? cytoplasm
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.
In which stage of mitosis do chromosomes move to the opposite ends of the cells along the spindle fibers? anaphase
A chemical that reduces the amount of activation energy needed to start a chemical reaction is a(n) catalyst.
Replication of DNA occurs in which phase of interphase? S phase
NaCl would move through the cell membrane in which direction? Both into and out of the cell
Diffusion of particles through a membrane by means of a carrier molecule is called: facilitated diffusion.
Which of the following terms is synonymous with tumor? Neoplasm
The correct order of the phases of mitosis is: prophase, metaphase, anaphase, telophase.
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 is not true about the sodium and potassium pump? Sodium moves into the cell and potassium moves out of the cell.
Diffusion requires: a concentration gradient.
A sequence of three bases forms a(n): codon.
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.
A DNA molecule is characterized by all of the following except: ribose sugar.
The small water channels in the cell membrane are called: aquaporins.
Extensive weight training causes the muscle cells to: hypertrophy.
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.
All of the following are examples of passive transport except: endocytosis.
Which is true about the sodium and potassium pump? Three sodium ions are taken out of the cell.
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.
During which stage of mitosis do the centrioles move to the opposite poles of the cell? Prophase
All of the following occur as a result of meiosis except: chromosome number remains at 46.
Which of the following statements is true? The site of transcription is within the nucleus, whereas the site of translation is in the cytoplasm.
When the chromosomes align themselves across the equator of the spindle fibers, it is characteristic of which phase of mitosis? Metaphase
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.
Materials can be moved from a low concentration to a high concentration through: active transport.
Twenty-three chromosomes per cell in humans is referred to as: haploid.
Water will move through the cell membrane by: osmosis.
An individual’s entire set of DNA can be referred to as a: genome.
Which of the following is not true of RNA? It contains deoxyribose sugar.
A saline solution that contains a higher concentration of salt than a red blood cell would be: hypertonic.
Phagocytosis is an example of: endocytosis.
Transcription can be best described as the: Transcription can be best described as the:
Which of the following is not true of diffusion? Uses cellular energy
Created by: Kferguson76
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