Biology Semester Test Chapter 3
Polysaccharides are carbohydrates lipids proteins unsaturated fats
Carbohydrates
Nucleic acids include a. chlorophyll and retinal b. DNA and RNA c. lipids and sugars d. glucose and glycogen
DNA and RNA
In a condensation reaction, two molecules become linked together and a molecule of ______is produced.
water
Lipids are soluble in a. water b. salt water c. oil d. all of the above
oil
Which organic molecule below is most closely related to proteins? amino acids CH2 chains nucleotides sugars
Amino Acids
Which organic molecule below is most closely related to lipids? a. amino acids b. CH2 chain2 c. nucleotides d. sugars
CH2 chains2
Lipids are __________molecules because they have no negative and positive poles
Non polar
Because water is a polar molecule, it tends to cause ionic compounds mixed in water to dissociate into ions. T or F
True
Capillarity is apparent when you put a straw in water and the water level inside the straw rises higher than the level in the surrounding container.
True
Organic compounds are substances produced and found in living things.
True
All organic compounds contain the element C. N. Ca. Na.
a. - C.
Water is important to life because it surround all cells is found inside cells influences the shape of the a membrane. all of the above
all of the above
Which three elements are often found in organic compounds?
carbon, hydrogen and oxygen
Water is very effective at dissolving other polar substances because of it ________.
charges on either end
The formation of polymers from monomers occurs as a result of _________reactions, and the breakdown of polymers into monomers occurs as a result of __________reactions.
condensation hydrolosis
Water is a polar molecule because it contains two hydrogen atoms for each oxygen atom it has a charge. different parts of the molecule have slightly different charges it does not have a charge.et
different parts of the molecule have different charges
Animals store glucose-containing fragments in the form of? cellulose glycogen wax lipids
glycogen
Breaking of _________bonds is the first thing that happens when water is heated, which means that it take a great deal of thermal energy to raise the temperature of water.
hydrogen
The formation of ADP and inorganic phosphate from ATP and water is an example of which kind of reaction. condensation polymerization hydrolysis endergonic
hydrolysis
Lipids are a. polar molecules b. similar to water molecules c. protein molecules d. non-polar molecules
non-polar molecules
Which organic molecule below is most closely related to nucleic acids? a. amino acids b. CH2 chains c. nucleotides d. sugars
nucleotides
A molecule that has a partial positive charge on one side and a partial negative charge on the other side is called a nonpolar molecule polar molecule charged molecule bipolar molecule
polar molecule
Amino acids are monomers of a. disaccharides b. proteins c. nucleotides d. steroids
proteins
Which organic molecule below is classified as a carbohydrate? amino acid CH2 chain nucleotide sugar
sugar