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