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Maricely Gutierrez
Physiology Week 1-6
Question | Answer |
---|---|
Intrinsic control: | is sometimes called autoregulation. |
A triglyceride is composed of a glycerol molecule and three of the same type of fatty acid. | False |
When two amino acids are joined, a peptide bond is formed and an H+ ion is released. | False |
RNA and DNA have the same pyrimidine bases but different purine bases. | False |
Peptide bonds join together molecules of: | amino acids |
The amino group in an amino acid is: | NH3+ |
Which of the following is not one of the major groups of organic substances in the human body? | Salts |
DNA: | is a double-helix strand of nucleotides. |
Unsaturated fats: | will kink or bend because of the double bonds between the carbon atoms |
A structural lipid found in the cell membrane is a: | phospholipid and steroid |
Which of the following is not true of both triglycerides and phospholipids? | They both contain a hydrophobic and hydrophilic end |
Which lipid is part of vitamin D? | Steroids |
What is the most important factor in determining the physical and chemical properties of fatty acids? | Degree of saturation |
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 component that distinguishes one nucleotide from another is the | nitrogen base |
Water will move through the cell membrane by: | osmosis |
Extensive weight training causes the muscle cells to: | hypertrophy |
Which is not true about the sodium and potassium pump? | Sodium moves into the cell and potassium moves out of the cell |
All of the following occur as a result of meiosis except: | chromosome number remains at 46 |
Which of the following is not true of diffusion? | Uses cellular energy |
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. |
Which of the following terms is synonymous with tumor? | Neoplasm |
Which cells of the skin act as a type of antigen-presenting cell in the skin? | Dendritic cells |
Which of the following is not a function of the skin? | Synthesis of vitamin E |
Which of the following is not a proteoglycan found in the matrix of connective tissue? | Collagen |
Basement membrane is composed of molecules made by _____ tissue. | connective and epithelial |
Which of the following is not a characteristic of epithelial tissue? | Is important in communication and control |
Why is cartilage slow to heal? | because it is semi-solid and flexible/because it is semi-solid and flexible |
Bones grow in diameter due to bone formation | In the endosteum or periosteum |
The cell organelles that synthesize organic matrix substances in bone formation are: | endoplasmic reticulum and Golgi apparatus |
The human hand has greater dexterity than the forepaw of any animal because of the freely movable joint of the: | thumb |
Because of how the clavicle articulates with the scapula, all shoulder movements involve the sternoclavicular joint. | True |
Which of the following statements is incorrect about motor units? | The more muscle fibers stimulated by a motor neuron, the more precise the movements of that muscle can be. |
Which of the following is not a part of the neuromuscular junction? | T-tubules |
All of the following are characteristics of smooth muscle except: | thin and thick filaments are aligned in sarcomeres like skeletal muscles. |