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Cherylh
Set 1 (Ch2,4,6-14,17) Midterm Review
| True or False The impact of effector activity on sensors may be positive or negative. Therefore, homeostatic control mechanisms are categorized as organs that are indirectly influenced by physiological variables or mechanisms. | False |
| Of the pathogenic organisms, which of the following are most complex? -protozoa -bacteria -tapeworms -viruses | Tapeworms |
| True or False RNA and DNA have the same pyrimidine bases but different purine bases | False |
| True or False A triglyceride is composed of a glycerol molecule and three of the same type of fatty acid | False |
| Prostaglandins and steroids share which of the following characteristics -both have a saturated fat in their structure -both have a ring structure in the molecule -both are found in the cell membrane -none of the above are shared characteristics | Both have a ring structure in the molecule |
| In which stage of mitosis do chromosomes move to the opposite end of the cells along the spindle fibers? -metaphase -prophase -anaphase -telophase | Anaphase |
| Which of the following is not a characteristic of meiosis? - a reduction division -two steps of cell division -two haploid gametes -four haploid gametes | Two haploid gametes |
| The result of meiosis is -4 daughter cells that are identical to parent cells -4 daughter cells that are haploid -2 daughter cells that are haploid -2 daughter cells that are identical to parent cells | 4 daughter cells that are haploid |
| Normal mitosis results in --cells that are polyploidy -cells that are not genetically identical to parent cells -cells that are haploid -cells that are genetically identical to parent cell | Cells that are genetically identical to parent cells |
| In the DNA molecule, a sequence of three base pairs form a _____ | Codon |
| Which of the following phases is NOT correctly matched with its description? -anaphase-mitosis is complete -telophase-nuclear envelope reappears -prophase chromatin condenses into chromosomes -metaphase-chromosomes align along the center of the cell | Anaphase-mitosis is complete |
| RNA makes proteins by ______ | Translation |
| NaCL would move through the cell membrane in which direction? -out of the cell -into the cell -both into and out of the cell -neither into nor out of the cell | _Into the cell |
| If a sequence of nitrogen bases in nucleic acid were AUCGA which of the following would be true about the nucleic acid? -it could only be found in the nucleus -it contains deoxyribose sugar -it contains ribose sugar | -It contains ribose sugar |
| All of the following occur as a result of meiosis except -chromosome number remains at 46 -primary sex cells become mature gametes -cells become haploid -meiosis occurs in 2 steps | -Chromosome number remains at 46 |
| During which stage of mitosis do the centrioles move to the opposite poles of the cell? -anaphase -telophase -metaphase -prophase | -Prophase |
| The hair papilla consists of _____tissue | -Dermal |
| In which skin layer does the process of keratinization begin? | Stratum granulosum |
| The nail body forms at the nail root, which has a matrix of proliferative cells from the _____that enables the nail to grow continuously. | -Stratum Basale |
| Which of the following vitamins are absorbed through the skin? -Vitamin A -Vitamin D -Vitamin K -All the above | -All the above |
| Which of the following is not a proteoglycan found in the matrix of connective tissue? -glucosamine -collagen -hyaluronic acid -all the above are proteoglycans | Collagen |
| As the activity of osteoblasts increase -the amount of calcium in blood decreases -level of calcium in blood decreases -level of calcium in blood increases -amount of calcium in bone increases and level of calcium in blood decreases | -amount of calcium in bone increases and level of calcium in blood decreases |
| The minimal level of stimulation required to cause a fiber to contract is called the _____stimulus | -Threshhold |
| The shoulder joint is an example of a -multiaxial -freely movable -ball and socket -all of these | -All of these |
| _____is a normal mechanism that usually speeds recovery from an infection or injury | Inflammatory response |
| _____are the building blocks of protein | Amino Acids |
| _____Breaks larger molecules into smaller molecules usually releasing energy | Catabolism |
| Name the four divisions of mitosis | Prophase, metaphase, anaphase, telophase |
| Group of similar cells that perform a common function | Tissue |
| True or False Another name for smooth muscle cell is striated involuntary | False Nonstriated Involuntary |
| Blood contains the reddish pigment _____which carries oxygen or carbon dioxide | Hemoglobin |
| _____enlarge the diameter of the medullary cavity by eating away the bone of its wall | Osteoclasts |
| _____allow the skull to mold during the birth process and also allow for rapid growth of the brain | Fontanels |
| True or False In young adulthood changes in reduced bone density makes fractures more likely and causes changes in posture and overall height | False Later adulthood |
| _____a projection of one bone articulates with a ring or notch of another bone | Pivot joints |
| True or False Cardiac muscle is self-stimulating | True |
| True or False Cartilage is slow to heal because it is semi-solid, flexible, and has no or a limited blood supply | True |
| True or False The axial skeletal structure provides framework for muscles that anchor and stabilize the appendicular bones | True |
| Most body movements are _____contractions | Isotonic |
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