BSC 1005 ALL FINAL EXAMS ACTUAL QUESTIONS
AND ANSWERS SURE A+
✔✔Table salt is formed when - ✔✔sodium donates its single outer electron to chlorine
✔✔A hydrogen atom has one electron. How many covalent bonds can hydrogen form? -
✔✔one covalent bond
✔✔What is the fundamental difference between covalent and ionic bonding? - ✔✔In a
covalent bond, the partners share a pair of electrons; in an ionic bond, one partner
accepts electrons from
✔✔In a water molecule, hydrogen and oxygen are held together by a(n) ________
bond. - ✔✔polar covalent
✔✔The hydrogen atoms of a water molecule are bonded to the oxygen atom by
________ bonds, whereas neighboring water molecules are held together by ________
bonds. - ✔✔polar covalent . . . hydrogen
✔✔Water molecules stick to other water molecules because - ✔✔hydrogen bonds form
between the hydrogen atoms of one water molecule and the oxygen atoms of other
water molecules.
, ✔✔Which of the following statements about water is false? - ✔✔The hydrogen bonds in
ice are less stable than the hydrogen bonds in liquid water.
✔✔A solution with a pH of 7 is - ✔✔neutral.
✔✔A buffer - ✔✔donates H+ ions when conditions become too basic and accepts H+
ions when conditions become too acidic.
✔✔Which of the following is a carboxyl group? - ✔✔COOH
✔✔Which of the following is an amino group? - ✔✔NH2
✔✔Which of the following contains a carboxyl and an amino group? - ✔✔amino acids
✔✔What is the general function of enzymes within a cell? - ✔✔to speed up chemical
reactions
✔✔A disaccharide forms when - ✔✔two monosaccharides join by dehydration
synthesis.
✔✔Which of the following lists contains only polysaccharides? - ✔✔cellulose, starch,
and glycogen
✔✔Fatty acids are - ✔✔hydrophobic.
✔✔Fatty acids with double bonds between some of their carbons are said to be -
✔✔unsaturated.
✔✔A phospholipid is composed of - ✔✔one glycerol molecule linked to one phosphate
group and two fatty acids.
✔✔Which of the following substances is a lipid? - ✔✔steroids
✔✔A major type of lipid found in cell membranes is - ✔✔phospholipids.
✔✔Proteins cannot be denatured by - ✔✔freezing.
✔✔The primary structure of a protein is - ✔✔the amino acid sequence of the
polypeptide chain.
✔✔Which of the following is an example of secondary structure in a protein? - ✔✔an
alpha helix
AND ANSWERS SURE A+
✔✔Table salt is formed when - ✔✔sodium donates its single outer electron to chlorine
✔✔A hydrogen atom has one electron. How many covalent bonds can hydrogen form? -
✔✔one covalent bond
✔✔What is the fundamental difference between covalent and ionic bonding? - ✔✔In a
covalent bond, the partners share a pair of electrons; in an ionic bond, one partner
accepts electrons from
✔✔In a water molecule, hydrogen and oxygen are held together by a(n) ________
bond. - ✔✔polar covalent
✔✔The hydrogen atoms of a water molecule are bonded to the oxygen atom by
________ bonds, whereas neighboring water molecules are held together by ________
bonds. - ✔✔polar covalent . . . hydrogen
✔✔Water molecules stick to other water molecules because - ✔✔hydrogen bonds form
between the hydrogen atoms of one water molecule and the oxygen atoms of other
water molecules.
, ✔✔Which of the following statements about water is false? - ✔✔The hydrogen bonds in
ice are less stable than the hydrogen bonds in liquid water.
✔✔A solution with a pH of 7 is - ✔✔neutral.
✔✔A buffer - ✔✔donates H+ ions when conditions become too basic and accepts H+
ions when conditions become too acidic.
✔✔Which of the following is a carboxyl group? - ✔✔COOH
✔✔Which of the following is an amino group? - ✔✔NH2
✔✔Which of the following contains a carboxyl and an amino group? - ✔✔amino acids
✔✔What is the general function of enzymes within a cell? - ✔✔to speed up chemical
reactions
✔✔A disaccharide forms when - ✔✔two monosaccharides join by dehydration
synthesis.
✔✔Which of the following lists contains only polysaccharides? - ✔✔cellulose, starch,
and glycogen
✔✔Fatty acids are - ✔✔hydrophobic.
✔✔Fatty acids with double bonds between some of their carbons are said to be -
✔✔unsaturated.
✔✔A phospholipid is composed of - ✔✔one glycerol molecule linked to one phosphate
group and two fatty acids.
✔✔Which of the following substances is a lipid? - ✔✔steroids
✔✔A major type of lipid found in cell membranes is - ✔✔phospholipids.
✔✔Proteins cannot be denatured by - ✔✔freezing.
✔✔The primary structure of a protein is - ✔✔the amino acid sequence of the
polypeptide chain.
✔✔Which of the following is an example of secondary structure in a protein? - ✔✔an
alpha helix
