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Chapters 2 & 3

PBSC Study Activities for Chapters 2 & 3 BSC1005 259323 CONCEPTS IN BIOLOGY

QuestionAnswer
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