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bio 100 test three
bio biology
| Question | Answer |
|---|---|
| a reflex does not involve | the brain |
| the major function of cell-mediated immunity is to | destroy cancer cells and virus-infected cells |
| steriod hormones | alter the activity of genes |
| during muscle contraction | actin and myosin filaments slide past eachother |
| mammals are unique among all vetebrates because they | have hair. |
| under the biological species concept, the main criterion for identifying a species is | reproductive isolation |
| in the early history of life on earth which is the correct evolutionary sequence | anaerobic bacteria, cyanobacteria, aerobic bacteria |
| a mycorrhiza is a | fungus plant relationship |
| which of the following sets of characteristics would be considered most primitive (i.e. earlist in evolution) | radial symmetry, sac like gut, no cephalization. |
| two populations of organisms that are able to reproduce together but produce sterile offspring are considered | seperate species like the horse and donkey. |
| which of the following pairs of organisms are most closely related in ancestry | bat and whale. |
| consider two species that are members of the same class therefore, they | are also members of the same phylum. |
| what is the difference between an antigen and a antibody? | antigen is a part of the envador, and antibody is produced by the immune system. |
| ___ tissues are sheetlike with one free surface | epithelial |
| a ___ connects epithelium to underlying connective tissue | basement membrane |
| most animals have glands derived from ___ tissue. | epithelial |
| the most abundant protein in the human body is ___, made fibroblasts. | collagen |
| ___ is mostly plasma. | blood |
| your body converts excess carbohydrates and proteins to fats, which accumulate in ___. | adipose tissue cells |
| ___ tissues are the body's most abundant and widely distributed tissue. | connective |
| cell of ___ can shorten (contract) | muscle tissue |
| ___ muscle tissue has a striated appearance | skeletal and cardiac |
| ___ detects and integrates information about changes and controls responses to those changes | nervous tissue |
| thin cytoplasmic protection from cells called ___ carry signals between your spinal cord and your toes. | nuerons |
| A hydrostatic skeleton consists of | a fluid in an enclosed space |
| bones are | mineral reservoirs, skeletal muscle's partners, and sites where blood cells form (some bones only). |
| the human backbone | consists of vertebrae and intervertebral cartilage disks, has a shape adapted to upright walking, and enclosed the spinal cord. |
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