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Chapters 2 & 3
PBSC Study Activities for Chapters 2 & 3 BSC1005 259323 CONCEPTS IN BIOLOGY
| Question | Answer |
|---|---|
| The charge found on an electron. | Negative |
| This lipid is composed of ring structures and is a component in animal cell membranes. | Cholesterol |
| This is the primary storage form of glucose in plants. | Starch |
| This property of water gives a surface tension to water droplets. | Cohesion |
| Those amino acids that humans cannot make, they need to obtain them from the foods they eat. | Essential Amino Acids |
| Name one example of a monosaccharide. | glucose |
| To change the shape of a protein by either high heat or a change in pH. | Denaturation |
| An example of an unsaturated fat. | salad oil |
| The charge for a proton. | Positive |
| What are the building blocks of nucleic acids? | Nucleotides |
| _____ proteins are those that compose nails, tendons, hair and feathers. | Structural |
| An example of a protein with all 4 levels of protein structure. | Hemoglobin |
| Name 2 types of secondary strucures in proteins. | Beta Pleated Sheet and the Alpha Helix |
| _____ proteins can carry molecules like oxygen (example: hemoglobin). | Transport |
| What are the 4 classes of macro molecules? | carbohydrates, lipids, proteins and nucleic acids |
| Give an example of a compound formed due to ionic bonding. | NaCl |
| Name a polysaccharide which is indigestible by humans; also known as "fiber"; the structural polysaccharide of plants. | cellulose |
| Excess blood glucose (that not burned in energy) is, over the long term, turned into _____. | Fat |
| What types of sterols are hormones which direct sexual development? | Testosterone & Estrogen |
| _____ proteins are those that are hormones. | Regulatory |
| Is a solution with a pH of 3 considered an acid, base or neutral? | Acid |
| Which of the properties of water listed in your notes are due to the polarity of the water molecule, and thus its hydrogen bonding? | All of the properties of water. |
| Water is a polar ______. | molecule |
| What are the triglyceride molecules that are liquid at room temperature, due to carbon to carbon double bonds in the fatty acid tails which create kinks in the tails? | Unsaturated |
| _____ proteins are what causes muscles to contract. | Contractile |
| This type of chemical bond is fomed between two oppositely charged ions. | Ionic bonds |
| Hydrogen bonds are based upon this type of covalent bond (choose either polar or non-polar). | Polar Covalent Bonds |
| This property of water makes it possible for plants such as the giant sequoia tree to be able to pull water up to the top of the tree. | Cohesion |
| What makes up the primary structure of proteins? | Amino Acid Sequence |
| The portion of a phospholipid that is polar and hydrophyllic. | Glycerol Head |
| Solid water (ice) is ______ (less or more) dense than liquid water. | Less |
| What are the triglyceride molecules that are solid at room temperature, due to carbon to carbon single bonds in the fatty acid tails? | Saturated |
| The 2 types of particles found in the core of an atom. | Protons and neutrons |
| An example of a saturated fat. | lard |
| These bonds are formed when electrons are shared. | Covalent Bonds |
| This is the main storage form of glucose in animals. | Glycogen |
| The portion of the phospholipid that is non-polar and hydrophobic. | Fatty Acid Tails |
| Water forms spheres of hydration around ions because it is a good ____. | Solvent |
| The charge for a neutron. | Neutral - no charge |
| _____ proteins are those like antibodies found in the immune system. | Protective |
| What are the 4 bases found in a nucleotide of DNA? | Adenine, Guanine, Thymine & Cytosine |
| What 3 particles make up an atom? | Protons, Neutrons & Electrons |
| What are the 2 types of nucleic acids? | RNA and DNA |
| This property of water explains why large bodies of water stabilize temperature on land. | Large heat capacity |
| Name the covalent bond which holds the amino acids together in proteins. | Peptide Bonds |
| The building blocks of proteins are _____. | Amino Acids |
| Is a solution with a pH of 9 considered an acid, base or neutral? | Base |
| The building blocks of polysaccharides. | monosaccharides |
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