Adv. Bio 3

Which of the following is an amino group? -NH2 -OH -CO -COOH

-NH2

Select the hydrocarbon from the following choices. View Available Hint(s) H2CO3 C3H8 C6H12O6 CO2

C3H8

Which of the following molecules is a carbohydrate? View Available Hint(s) C45H84O8P4 C60H100O50 C51H98O6 C22H49O10N5

C60H100O50

A shortage of phosphorus in the soil would make it especially difficult for a plant to manufacture _____. proteins cellulose DNA fatty acids

DNA

In a hydrolysis reaction, __________. In this process, water is __________. View Available Hint(s) a polymer breaks up to form monomers ... consumed monomers are assembled to produce a polymer ... consumed a polymer breaks up to form monomers ... produced monomers are assembled to produce a polymer ... produced

a polymer breaks up to form monomers ... consumed

Proteins are an important class of molecules because of the functions they perform. Proteins can _____. act as signal receptors to receive signals in cell communication store genetic information form membrane bilayers form dietary fiber

act as signal receptors to receive signals in cell communication

Organic compounds always contain carbon. are synthesized only by animal cells. always contain nitrogen. always contain oxygen.

always contain Carbon

Glucose molecules are to starch as ________ are to proteins. oils fatty acids monosaccharides amino acids

amino acids

Which of the following would be correctly classified as a protein? starch cellulose cholesterol an enzyme

an enzyme

Structural proteins include ovalbumin, a protein found in egg white. include hemoglobin. include receptor molecules. are found in hair and tendons.

are found in hair and tendons

Which element is closely associated with the field of organic chemistry? sulfur potassium carbon nitrogen

carbon

Which of the following lists contains only polysaccharides? starch, amino acids, and glycogen sucrose, starch, and cellulose fructose, cellulose, and glucose cellulose, starch, and glycogen

cellulose starch glycogen

A hydroxyl group is composed of two oxygen atoms. also called a carbonyl group. characteristic of alcohols. characteristic of proteins.

characteristic of alcohols.

A DNA nucleotide is composed of a __________. View Available Hint(s) ribose sugar, which is bonded to both a phosphate group and a nitrogenous base deoxyribose sugar, which is bonded to a phosphate group and a nitrogenous base deoxyribose sugar, which is attached to a phosphate group, which is bonded to a nitrogenous base ribose sugar, which is attached to a phosphate group, which is bonded to a nitrogenous base

deoxyribose sugar, which is bonded to a phosphate group and a nitrogenous base

Lactose intolerance is the inability to produce lactose. digest cellulose. digest lactose. produce milk proteins.

digest lactose

You work for a company that manufactures food products. A new "wonder food" is being distributed by a rival company. The researchers in your company determine that the "wonder food" contains only carbon, oxygen, and hydrogen. At this point, your researchers can say with certainty that the food could only be made of triglycerides. does not include proteins or nucleic acids. includes proteins. could only be made of carbohydrates.

does not include proteins or nucleic acids.

Fatty acids are hydrophobic. composed of carbon, hydrogen, and oxygen in a 1:2:1 ratio. composed of carbon, hydrogen, glycerol, and a phosphate group. composed of four linked rings.

hydrophobic

A disaccharide forms when two starches join by dehydration synthesis. two monosaccharides join by dehydration synthesis. two monosaccharides join by hydrolysis. two starches join by hydrolysis.

join by dehydration synthesis

Dehydration reactions __________. They do so by __________. remove monomers from polymers; removing a water molecule remove monomers from polymers; adding a water molecule link monomers to form a polymer; removing a water molecule link monomers to form a polymer; adding a water molecule

link monomers to form a polymer; removing a water molecul

How does DNA differ from RNA? DNA contains adenine, RNA does not. RNA contains ribose, DNA does not. DNA is smaller, RNA is larger. DNA has a sugar-phosphate backbone, RNA does not.

RNA contains ribose, DNA does not.

Many names for sugars end in the suffix -ose. -acid. -ase. -hyde.

ose

The development of atherosclerotic disease can result from a diet high in fiber. saturated fats. protein. sugars.

saturated fats

High-fructose corn syrup is made from corn. The main carbohydrate in corn is a polysaccharide called fructose. hydrocarbon. cellulose. starch.

starch

Which of the following substances is made of lipids? cellulose DNA enzymes steroids

steroids

Fatty acids with double bonds between some of their carbons are said to be saturated. unsaturated. completely hydrogenated. monoglycerides.

unsaturated

Which of the following is a carboxyl group? -OH -COOH -C-O -NH2

-COOH

How many different kinds of amino acids are there in most proteins? 4 20 26 100

20

What is the complementary sequence to the DNA strand TCGATGG? GGTAGCT AGCTACC TCGATGG AGCUACC

AGCTAC

The storage form of carbohydrates is ________ in animals and ________ in plants. cellulose; glycogen glycogen; cellulose glycogen; starch starch; glycogen

glycogen; starch

A major type of lipid found in cell membranes is waxes. glycerol. phospholipids. triglycerides.

phospholipids

Foods that are high in fiber are most likely derived from plants. fish. red meats. dairy products.

plants

DNA carries the instructions for building _____, and these instructions are found in informational units called _____. polypeptides ... genes steroids ... genes lipids ... libraries carbohydrates ... libraries

polypeptides ... genes

What is the general function of enzymes within a cell? to induce chemical reactions to speed up chemical reactions to stop chemical reactions to promote the synthesis of monomers

to speed up chemical reactions

Which of the following types of fat increases heart attack risk the most? monounsaturated fats polyunsaturated fats trans fats saturated fats

trans fats

When an RNA strand forms using DNA as a template, _____. thymine pairs with cytosine and adenine pairs with guanine guanine pairs with adenine and thymine pairs with uracil adenine pairs with cytosine and guanine pairs with thymine uracil pairs with adenine and cytosine pairs with guanine

uracil pairs with adenine and cytosine pairs with guanine