bio ch 3
carbon is dfferent form most other elements in that a. it has four electrons in its outermost energy level b. it readily bond w/ other carbon atoms c. it can form single, double, or triple bonds w/ other atoms d. it shares two electrons w/ another atom when it forms a covalent bond
a
lipid fats called oils contain a. long CH2 chains linked by double covalent bonds b. fat molecules lined up side by side c. many glucose molecules d. more hydrogen atoms than hard fats
a
nonpolar molecules have a. no negatiive or positive poles b. both negative and positive poles c. only a negative pole d. only a positive pole
a
polysaccharides are a. carbohydrates b. lipids c. proteins d. unsaturated fats
a
which organic molecule below is most closely related to proteins? a. amino acids b. CH2 chains c. nucleotides d. steroids
a
which three elements are often found in organic compounds? a. carbon, hydrogen, oxygen b. carbon, hydrogen, neon c. nitrogen, hydrogen oxygen d. nitrogen, chlorine, phosphorus
a
a molecule that has a partial positive charge on one side & a partial negative charge on the other side is called a a. nonpolar molecule b. polar molecule c. charged molecule d. bipolar molecule
b
all of the following are lipids expect a. saturated fats b. starch c. cholesterol d. earwax
b
all organic compounds contain the element a. C b. N c. Ca d. Na
b
amino acids are monomers of a. disaccharides b. proteins c. nucleotides d. steroids
b
nucleic acids include a. chlorophyll & retinal b. DNA & RNA c. lipids & sugars d. glucose & glycogen
b
which of the following is not an organic macromolecule? a. carbohydrate b. ice c. lipid d. nucleic acid
b
which organic molecule below is most closely related to lipids? a. amino acids b. CH2 chains c. nucleotides d.sugars
b
all of the following are examples of carbohydrates expect a. sugar b. cellulose c. steroids d. glycogen
c
lipids are soluble in a. water b. salt water c. oil d. all of the above
c
long chains of amino acids are found in a. carbohydrates b. lipids c. proteins d. sugars
c
water is polar because a. it contains two hydrogen atoms for each oxygen atom b. it has a charge c. different parts of the molecule have slightly different charges d. it does not have a charge
c
which organic molecule is most closely related to nucleic acids? a. amino acids b. CH2 chains c. nucleotides d. sugars
c
lipids are a. polar molecules b. similar to water molecules c. protein molecules d. nonpolar molecules
d
which of the following is a carbohydrate? a. DNA b. insulin c. wax d. sucrose
d
true/false because water is a polar molecule, it tends to cause ionic compounds mixed in water to dissociate into ions
true
true/false functional groups are side groups of carbon compounds that confer specific properties to these compounds
true
true/false organic compounds are substances produced and found in living things
true