Bio 1500- Test 3 UPDATED ACTUAL Exam
Questions and CORRECT Answers
Describe an effective experimental design to determine whether an environmental variable
imposes selection on a trait - CORRECT ANSWER - - control group
- manipulate the independent variable
- record dependent variable results
- keep everything the same across the groups except the IV (constant temp, environment, food,
etc.)
How does natural selection affect a phenotype? - CORRECT ANSWER - - natural
selection occurs when a mutation positively affects a population, and thus the population starts to
reproduce with that trait
- a phenotype is a visible trait
- natural selection changes phenotypes in a population
4 classes of organic molecules - CORRECT ANSWER - carbohydrates, lipids, proteins,
nucleic acids
carbohydrates - CORRECT ANSWER - - large group of organic compounds that includes
sugars, starch, and cellulose, and used as structural materials for energy storage
- Monosaccharides, polysaccharides, disaccharides
lipids - CORRECT ANSWER - - fatty acids or their derivatives, insoluble in water but
soluble in organic solvents, non-polar in nature
- triglycerides, saturated fat, unsaturated fat, phospholipids
proteins - CORRECT ANSWER - - large, complex molecules that play many important
roles in the body
- enzymes, hormones, actin, casein, myosin
, nucleic acids - CORRECT ANSWER - - most important macromolecule, they carry the
cell's genetic blueprint and instructions for its functioning
- DNA, RNA, nucleotides, purines
building blocks of carbohydrates - CORRECT ANSWER - monosaccharides (simple
sugars)
building blocks of lipids - CORRECT ANSWER - fatty acids and glycerol
building blocks of proteins - CORRECT ANSWER - amino acids
building blocks of nucleic acids - CORRECT ANSWER - nucleotides
monomer - CORRECT ANSWER - A simple compound whose molecules can join
together to form polymers
polymer - CORRECT ANSWER - A long molecule consisting of many similar or identical
monomers linked together.
hydrolysis - CORRECT ANSWER - Breaking down complex molecules by the chemical
addition of water
dehydration synthesis - CORRECT ANSWER - A chemical reaction in which two
molecules covalently bond to each other with the removal of a water molecule.
why are most cells limited to a small size - CORRECT ANSWER - large cells cannot
provide nutrients, water, or remove waste in an efficient manner
Questions and CORRECT Answers
Describe an effective experimental design to determine whether an environmental variable
imposes selection on a trait - CORRECT ANSWER - - control group
- manipulate the independent variable
- record dependent variable results
- keep everything the same across the groups except the IV (constant temp, environment, food,
etc.)
How does natural selection affect a phenotype? - CORRECT ANSWER - - natural
selection occurs when a mutation positively affects a population, and thus the population starts to
reproduce with that trait
- a phenotype is a visible trait
- natural selection changes phenotypes in a population
4 classes of organic molecules - CORRECT ANSWER - carbohydrates, lipids, proteins,
nucleic acids
carbohydrates - CORRECT ANSWER - - large group of organic compounds that includes
sugars, starch, and cellulose, and used as structural materials for energy storage
- Monosaccharides, polysaccharides, disaccharides
lipids - CORRECT ANSWER - - fatty acids or their derivatives, insoluble in water but
soluble in organic solvents, non-polar in nature
- triglycerides, saturated fat, unsaturated fat, phospholipids
proteins - CORRECT ANSWER - - large, complex molecules that play many important
roles in the body
- enzymes, hormones, actin, casein, myosin
, nucleic acids - CORRECT ANSWER - - most important macromolecule, they carry the
cell's genetic blueprint and instructions for its functioning
- DNA, RNA, nucleotides, purines
building blocks of carbohydrates - CORRECT ANSWER - monosaccharides (simple
sugars)
building blocks of lipids - CORRECT ANSWER - fatty acids and glycerol
building blocks of proteins - CORRECT ANSWER - amino acids
building blocks of nucleic acids - CORRECT ANSWER - nucleotides
monomer - CORRECT ANSWER - A simple compound whose molecules can join
together to form polymers
polymer - CORRECT ANSWER - A long molecule consisting of many similar or identical
monomers linked together.
hydrolysis - CORRECT ANSWER - Breaking down complex molecules by the chemical
addition of water
dehydration synthesis - CORRECT ANSWER - A chemical reaction in which two
molecules covalently bond to each other with the removal of a water molecule.
why are most cells limited to a small size - CORRECT ANSWER - large cells cannot
provide nutrients, water, or remove waste in an efficient manner
