Bio 212 exam 1 Study guides, Class notes & Summaries

A compound contains hydroxyl groups as its predominant functional group. What is true of this compound? - It should dissolve in water A chemist wishes to make an organic molecule less acidic. What functional group should be added to the molecule? - Amino From its atomic number of 15, it is possible to predict that the phosphorus atom has? - 15 protons and 15 electrons What polymer is not found in cells? - polyethylene Which polymer contains sulfur? - protein What explains the attraction ...

What functions do organisms need to perform to survive? Regulate water and ions, nutrition, internal transport of materials, sensory signals, movement, reproduction, and defense Define adaptation and describe what types of features might be adaptations. adaptation is the biological mechanism by which organisms adjust to new environments or to changes in their current environment ex; webbed feet for swimming, different bird beak sizes for different sized food, whiskers on animals for more sensor...

A compound contains hydroxyl groups as its predominant functional group. What is true of this compound? - It should dissolve in water A chemist wishes to make an organic molecule less acidic. What functional group should be added to the molecule? - Amino From its atomic number of 15, it is possible to predict that the phosphorus atom has? - 15 protons and 15 electrons What polymer is not found in cells? - polyethylene Which polymer contains sulfur? - protein What explains the attr...

Which of the following is the correct order of relative size from smallest to largest? a phospholipid, a protein channel, a virus, a prokaryotic cell How does one determine the number of covalent bonds an element will likely form? the number of valence electrons What is the correct order of permeability from most to least permeable across a lipid bilayer that does not contain transport proteins? CO2, Methanol (CH3OH), H2O, Cl- Which of the following is not a feature of the fluid mosaic model?...

A compound contains hydroxyl groups as its predominant functional group. What is true of this compound? It should dissolve in water A chemist wishes to make an organic molecule less acidic. What functional group should be added to the molecule? Amino From its atomic number of 15, it is possible to predict that the phosphorus atom has? 15 protons and 15 electrons What polymer is not found in cells? polyethylene Which polymer contains sulfur? protein What explains the attraction of water mole...

Which of the following is the correct order of relative size from smallest to largest? A phospholipid, a messenger RNA, a virus, a prokaryotic cell How does one determine the number of covalent bonds an element will likely form? The number of Valence electrons What is the correct order of permeability from most to least permeable across a lipid bilayer that does not contain transport proteins? CO2, Methanol (CH3OH), H2O, Cl- Which of the following is not a feature of the fluid mosaic modes? P...

In a ______ feedback loop, effectors return internal conditions to their set-point values. negative The ability of an organism to maintain a constant internal environment even when the external environment fluctuates, is called _______. homeostasis If you start sweating on a hot day, which mechanism of heat exchange is your body using to cool you down? evaporation An endotherm can sustain higher levels of running or flying. true An endotherm is more vulnerable to predation in cold weather fa...

Bio 212 Lecture Exam 1 Study Questions with Complete Solutions.

What is the function of the plasma membrane? - Physical isolation of cell contents from extracellular fluid - Sensitivity to changes in the extracellular fluid - Structural support of the cell - Regulation of exchange of materials between the cell and the extracellular fluid Explain why the unique molecular structure of the phospholipid molecules form a bi-layer. Also, describe how small lipid-soluble substances cross and small water-soluble substances cross the membrane. - molecules are arrang...