Practice test ch 1-6

a

Cells that contain a nucleus a are eukaryotic b are prokaryotic c are neither prokaryotic nor eukaryotic d can be either prokaryotic or eukaryotic

a

Cells that contains streaming cytoplasm a are eukaryotic b are prokaryotic c can be either prokaryotic or eukaryotic

a

Cells that do not have histone proteins associated with their DNA ? are prokaryotic ? are eukaryotic ? can be either prokaryotic or eukaryoti

a

Cells that have DNA as their genetic material include ? both prokaryotic and eukaryotic cells ? only eukaryotic cells ? only prokaryotic cells

b e

Differences between a plant and animal cell include: a plant cells have membrane-bound organelles and animal cells don't b plants cells have chloroplasts and animal cells don't c plant cells contain cytoplasm and animal cells don't d plants cells have a nucleus and animal cells don't e plant cells have cell walls and animal cells don't

c

Eukaryotic cells contain a no chromosomes b single chromosomes c paired chromosomes

b

Examples of nucleic acids include ? sugars and starches ? DNA and RNA ? fats and proteins ? amino acids and fatty acids

b

Generation of energy through cellular respiration takes place ? in the structure labeled "A" ? in the structure labeled "B" ? in the structure labeled "C" ? in the structure labeled "E" ? in the structure labeled "D" ? in the structure labeled "F"

d

If the small molecules are water molecules, then the movement from right to left across the membrane ? is called active transport ? is called pinocytosis ? will not occur in a healthy cell ? is called osmosis

b

In passive diffusion, substances always move ? from an area of lower concentration to an area of higher concentration ? from an area of higher concentration to an area of lower concentration ? from an area with more of the molecules to an area with fewer of the molecules ? from an area with fewer of the molecules to an area with more of the molecules

c

In the image above, the phospholipid bilayer ? is labeled "C" ? is labeled "D" ? is labeled "A" ? is labeled "B"

c

In the image above, the structures labeled "B", "C" and "D" are all ? phospholipids ? found only in animal cells ? proteins ? found only in plant cells

b

In the image above, the transport protein ? is labeled "C" ? is labeled "B" ? is labeled "D" ? is labeled "A"

d

In the image depicted above, the part of the bilayer labeled "A" ? are the transport proteins ? are the glycoproteins ? are the charged phospates ? are the hydrophobic lipids

b

In the image depicted above, the part of the bilayer labeled "B" ? are the transport proteins ? are the charged phospates ? are the glycoproteins ? are the hydrophobic lipids

a

In the image depicted above, the part of the bilayer that is hydrophobic includes ? region A only ? region B only ? neither region A nor region B ? both region A and region B

c d

Movement of the small molecules from left to right across the membrane a requires passive transport b requires no energy c requires energy d requires active transport

b c

Movement of the small molecules from right to left across the membrane a requires active transport b requires no energy c requires passive transport d requires energy

c

Ribosomes attach to ? the structure labeled "D" giving it a "rough" appearance ? the structure labeled "C" giving it a "rough" appearance ? the structure labeled "E" giving it a "rough" appearance ? the structure labeled "F" giving it a "rough" appearance ? the structure labeled "B" giving it a "rough" appearance ? the structure labeled "A" giving it a "rough" appearance

d

The organic molecules that carry the genetic code of a cell belong to which class of molecules ? proteins ? starches ? steroids ? nucleic acids ? lipids

b

The primary function of the Golgi apparatus is the: ? storage of water ? processing of large molecules such as proteins and lipids ? synthesis of DNA ? generation of cellular energy in the form of ATP

c

The process by which cells expel, or secrete, large molecules is known as ? phagocytosis ? pinocytosis ? exocytosis ? endocytosis

c

The structure labeled "A" has the function of ? protecting the cell's DNA ? converting sunlight to chemical energy ? providing rigidity and preventing water loss ? processing and transporting macromolecules such as proteins and lipids

c

The structure labeled "B" has the function of ? converting sunlight to chemical energy ? transporting fats to the nucleus ? transporting proteins produced by the attached ribosomes ? providing rigidity and preventing water loss

c

The structure labeled "C" has the function of ? transporting fats to the nucleus ? transporting proteins produced by the attached ribosomes ? converting sunlight to energy ? providing rigidity and preventing water loss

d

The structure labeled "G" has the function of ? transporting proteins produced by the attached ribosomes ? converting food energy to ATP ? converting sunlight to energy ? storage and support

b

The structure labeled "H" has the function of ? converting sunlight to energy ? converting food energy to ATP ? transporting proteins produced by the attached ribosomes ? storage and support

d

The structure whose function is to allow substances to diffuse from an area of higher concentration to an area of lower concentration ? is labeled "C" ? is labeled "A" ? is labeled "D" ? is labeled "B"

c

Tour de France winner Greg Lemond retired from competitive cycling when he was diagnosed with a disorder that prevented his cells from producing sufficient energy for vigorous activity. Which organelle was the source of his malady? ? The structure labeled "A" ? The structure labeled "D" ? The structure labeled "B" ? The structure labeled "E" ? The structure labeled "C"

e

Transport of lipids takes place ? in the structure labeled "F" ? in the structure labeled "E" ? in the structure labeled "A" ? in the structure labeled "B" ? in the structure labeled "D" ? in the structure labeled "C"

b d

Two types are endocytosis are called a exocytosis b phagocytosis c passive transport d pinocytosis

b c e

Viruses differ from cells in which of the following ways? a Viruses do not have membrane coverings b Viruses are larger than cells c Cells contain genetic information in the form of DNA, but viruses do not carry their own genetic information d Cells grow and require energy, but viruses do not e Viruses cannot reproduce themselves, but cells can

d

When a bond results from the transfer of electrons between atoms, it's a(n) ________________ bond that has formed. ? nuclear ? metallic ? covalent ? ionic

d

When electrons are shared between atoms of nonmetals, a(n) ________________ bond is formed. ? nuclear ? ionic ? metallic ? covalent

a

When salt is poured on a slug, it dies because ? water moves out of the slug, causing dehydration ? water moves into the slug, causing it to swell ? salt moves into the slug, poisoning it ? salt moves out of the slug, depriving it of essential minerals

a

When sugars polymerize in long chains, they may form any of the following except: ? proteins ? glycogen ? cellulose ? starch

d

Which answer correctly describes the lipid bilayer? ? lipids are hydrophilic; phosphates are hydrophilic ? lipids are hydrophilic; phosphates are hydrophobic ? lipids are hydrophobic; phosphates are hydrophobic ? lipids are hydrophobic; phosphates are hydrophilic

a

Which cell type contains membrane-bound organelles? aEukaryotic b Prokaryotic c both

a c

Which of the following helps you determine that the cell above is NOT a plant cell? a There is no large, central vacuole b It has mitochondria c It lacks a rigid cell wall d It has chloroplasts e It has a nucleus

c

Which of the following is an example of an organic chemical compound? ? carbon dioxide, CO2 ? sufur trioxide, SO3 ? glucose, C6H12O6 ? sodium chloride, NaCl

a

Which of the following is not normally a function of proteins in healthy cells? ? long-term energy storage ? functioning as enzymes ? a component of cell membranes

a b e

Which of the following would help you conclude that the cell shown here is a plant cell? a The presence of chloroplasts b The large, central vacuole c The absence of a rough endoplasmic reticulum d The presence of the Golgi apparatus e the rigid cell wall

a

Which of the following would provide the greatest amount of energy when burned by cells? ? one gram of fat ? one gram of starch ? one gram of sugar ? one gram of protein

e f

Which of these elements MUST be present in order for a molecule to be considered organic? a Iron, Fe b Chlorine, Cl c Nitrogen, N d Oxygen, O e carbon, C f Hydrogen, H

d f g h i j

Which six elements make up most of the mass of living cells? a Iron, Fe b Potassium, K c Helium, He d Hydrogen, H e Sodium, Na f Phosphorus, P g Nitrogen h Carbon, C i Oxygen, O j Sulfur, S

a

hough some DNA is found in the mitochondria, most of the genetic information of the cell is stored ? in the structure labeled "A" ? in the structure labeled "E" ? in the structure labeled "F" ? in the structure labeled "C" ? in the structure labeled "D" ? in the structure labeled "B"

d

Animals, plants, fungi, and protists have cells that are ? neither prokaryotic and eukaryotic ? exclusively prokaryotic ? both prokaryotic and eukaryotic ? exclusively eukaryotic

b

Assuming you can digest all of them, which of the following carbohydrates has the greatest energy value per gram? ? glycogen ? none of these, because they all have the same energy value ? starch ? sugar ? cellulose

b

Bacteria have cells that are ? exclusively eukaryotic ? exclusively prokaryotic ? neither prokaryotic nor eukaryotic ? both prokaryotic and eukaryotic

e

Processing of large molecules such as proteins and fats takes place ? in the structure labeled "C" ? in the structure labeled "B" X in the structure labeled "G" X in the structure labeled "H" :-) in the structure labeled "F"

a

Prokaryotic cells contain a single chromosomes b no chromosomes c paired chromosome

d

Proteins are made up of long chains of which of these building blocks? ? fatty acids ? nucleic acids ? sugars ? amino acids ? glycerol molecules

a

The antibiotic tetracycline interferes with the function of bacterial ribosomes. Because bacterial ribosomes are different from the ribosomes in human cells, taking tetracyline only stops ? the production of bacterial protein ? the formation of the bacterial cell wall ? the storage of water in bacterial cells ? the processing and transport of lipids in the bacterial cell

a

The bonds between atoms in organic molecules such as sugars, fats and proteins are ? covalent bonds ? metallic bonds ? ionic bonds ? nuclear bonds

a

The building blocks of a triglyceride molecule are ? fatty acids and glycerol ? sugars and starches ? nucleic acids and amino acids ? amino acids and glycerol ? glycogen and fatty acids

a

The cell pictured above is characteristic of a bacterial cells b animal cells c plant cells