Bio Unit 1

Front 1

Which of the following statements about the properties of life is false?

Back 1

Organism as have an unchanging, constant internal environment.

Front 2

Life is organized in a hierarchical fashion. Which of the following sequences correctly lists that hierarchy from least inclusive to most?

Back 2

Molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem

Front 3

What is the difference between a tissue and an organ system?

Back 3

An organ system includes tissues.

Front 4

The tree in your backyard is home to two cardinals, a colony of ants, a wasps nest, two squirrels, and millions of bacteria. Together all of these organisms represent

Back 4

A community

Front 5

If you eat a hamburger, you are mainly eating ground up beef muscle. What levels of organization are represented in this ground up muscle?

Back 5

Organelle, cell, and tissue

Front 6

Which of the following statements regarding a common cellular activity is false?

Back 6

New cells are derived from cellular components like organelles

Front 7

Your instructor asks you to look into your microscope to see a prokaryotic cell. You will be looking for a cell that

Back 7

Has a membrane.

Front 8

Which of the following statements about ecosystems is false?

Back 8

Bacteria and fungi recycle energy within an ecosystem

Front 9

In an ecosystem, energy

Back 9

Typically flows from producers through a series of consumers

Front 10

Which of the following statements about genetics is true?

Back 10

Differences among organisms reflect different nucleotide sequences in their dna

Front 11

Organisms that are prokaryotes are in the domains

Back 11

Bacteria and archaea

Front 12

Which of the following statements about the domain bacteria is true?

Back 12

All bacteria lack a nucleus

Front 13

Members of the kingdom animalia

Back 13

Can obtain their food by eating other organisms

Front 14

Kingdom fungi includes species

Back 14

That obtain food by decomposing dead organisms and absorbing the nutrients

Front 15

Which of the following is a kingdom within the domain eukarya?

Back 15

Fungi

Front 16

Organisms belonging to the kingdom plantae

Back 16

Are photosynthetic

Front 17

The teeth of grain eating animals are usually broad and ridged. This make an he teeth suitable for grinding and chewing. Meat eating animals have pointed teeth that are good for puncturing and ripping flesh. This illustrates

Back 17

A result of natural selection as well as the connection between form and function

Front 18

Which of the following statements is not consistent with darwins theory of natural selection?

Back 18

Individual organisms experience genetic change during their life spans to better fit their environment

Front 19

An antibiotic kills 99.9% of bacterial population. You would expect the next generation of bacteria

Back 19

To be resistant to that antibiotic

Front 20

Which of the following statements about evolution is true?

Back 20

Evolution can result in adaptations

Front 21

"If all vertebrates have backbones, and turtles are vertebrates, then turtles have backbones." The statement is an example of

Back 21

Deductive reasoning

Front 22

A hypothesis is

Back 22

A proposed explanation for a set of observations

Front 23

You notice that over the past month, many students on campus have started wearing a new style of school sweatshirt. You think to yourself that perhaps the bookstore has recently started selling this new style. This is an example of

Back 23

A hypothesis

Front 24

A theory is

Back 24

An explanation of an idea that is broad in scope and supported by a large body of evidence

Front 25

To be scientifically valid, a hypothesis must be

Back 25

Testable and falsifiable

Front 26

The role of a control in an experiment is to

Back 26

Provide a basis of comparison to the experimental group

Front 27

A scientist performs a controlled experiment. This means that

Back 27

Two versions of the experiment are conducted, one differing from a the other by a single variable.

Front 28

A scientist performs a controlled experiment. This means that

Back 28

Two versions of the experiment are conducted, one differing from a the other by a single variable.

Front 29

Basic science discoveries often lead to the development of technology, and the development of technology often leads to a new scientific discoveries. Which of the following is not an accurate pairing of a technology and a discovery?

Back 29

Invention of the microscope and creating of evolutionary trees.

Front 30

Which of the following statements is not an example of evolution that has resulted from human activity?

Back 30

Because of hunting, organisms such as bears and wolves are fewer in number.

Front 31

Which of the following statements is an accurate evaluation of the students remark?

Back 31

The student is incorrect because all of the crystals reproduce the same kind of crystals with no variation to provide adaptation, so the ocean water is not alive.

Front 32

"Plants eat sunlight, and animals eat other organisms." Which of the following responses to the students comment is most accurate?

Back 32

Plants don't eat sunlight, they use it to make sugars.

Front 33

Which of the following statements about ecosystems is false?

Back 33

Energy cycles from organisms through the atmosphere and back to the organisms.

Front 34

If the creators of the robot wanted to provide evidence that is alive, which of the following properties would be best to use as evidence?

Back 34

The robot just be bathed in liquid medium to provide nutrition for its cells

Front 35

Which of these sequences is not a correct pathway of energy through an ecosystem?

Back 35

Bacteria>plants>birds

Front 36

Which level in the hierarchy shown is a community?

Back 36

Level C

Front 37

Which of the following organisms belongs to the group represented in box 1?

Back 37

Tree

Front 38

The box numbered 2 represents which of the following?

Back 38

The cycling of energy

Front 39

Front (Term)

Back 39

Darker moths were more likely to survive and have more offspring over time.

Front 40

Which of these models is best studied through a systems approach?

Back 40

Back (Definition)

Front 41

Which of these models is best studied through a systems approach?

Back 41

Back (Definition)

Front 42

Which was the experimental group?

Back 42

Group A only

Front 43

To have confidence that the results of the experiment were valid, you'd also want to know

Back 43

Whether any volunteers had colds at the start of the experiment

Front 44

All of the cardiac cells working together can cause the robot leg to move in a way that individual cells could not. This is an example of

Back 44

Emergent properties of cells

Front 45

In the equation 2 H2 + O2 > 2h2o

Back 45

Only H2O is a compound

Front 46

Which of the following trace elements needed by humans is commonly added to table salt?

Back 46

Iodine

Front 47

In some areas, fluoride is added during the municipal water treatment process in order to help

Back 47

Reduce tooth decay

Front 48

Which of the following particles are found in the nucleus of an atom?

Back 48

Protons and neutrons

Front 49

Electrons move about the nucleus of an atom in a he same way that

Back 49

Insects fly around a bright lamp at night.

Front 50

What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons?

Back 50

12

Front 51

An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11. How many electrons does boron have?

Back 51

5

Front 52

Which of the following is another term used for atomic mass?

Back 52

Dalton

Front 53

The sodium atom contains 11 electrons, 11 protons, and 12 neutrons. What is the mass number of sodium?

Back 53

23

Front 54

Which of the following best describes the atomic number of an atom?

Back 54

The number of protons in the atom

Front 55

The robots cardiac cells, working together in synchrony, could he could be considered at what keep in life's hierarchy of organization?

Back 55

Tissue

Front 56

Typically, nitrogen atoms are composed of electrons, protons, and neutrons. An isotope of nitrogen could

Back 56

Have more neutrons than the usual nitrogen atom

Front 57

This study was focused on which level of life's hierarchy?

Back 57

Ecosystem

Front 58

Which of the following best describes the data that the scientists should collect and how they should be compared?

Back 58

Comparison of soil properties and species of plants present in the contoured area with the never roared area and of the abandoned area with the never roared area.

Front 59

In this experiment, the area that had never had a road is useful to the experiment because

Back 59

The area never roaded serves as a control for the experimental variables of recontoured and abandoned

Front 60

"These findings support the prediction that recontouring accelerates the rehabilitation of key ecohydrologica properties toward reference dynamics." What does this mean?

Back 60

Recontouring allows the water properties of the system to return to normal faster.

Front 61

The four most common elements in living organisms are

Back 61

C, H, O, N

Front 62

Which of the following is a trace element in the human body?

Back 62

Zinc

Front 63

Which of the following statements regarding matter is false?

Back 63

All matter exists in the form of compounds

Front 64

Which of the following statements best describes a compound?

Back 64

A compound contains two or more different elements in a fixed ratio

Front 65

A radioactive isotope is an isotope that

Back 65

Decays

Front 66

Medicines are often administrated in pill form. In many cases, the active ingredient of the pill is joined to another substance by ______. This form is a ______, which is stable in the dry environment of a pill bottle but dissociates under the wet conditions of the digestive system to release the drug to the body.

Back 66

Ionic bonds; salt

Front 67

What is the fundamental different between covalent and ionic bonding?

Back 67

In a covalent bond, the partners share a pair of electrons, in an ionic bond, one partner accepts electrons from the other.

Front 68

Which of the following statements regarding the oxygen atom of a water molecule is true?

Back 68

Oxygen is more electronegative than the hydrogen atoms

Front 69

In a water molecule, hydrogen and oxygen are held together by a _____ bond.

Back 69

Polar covalent

Front 70

A single water molecule (H-O-H) is held together by

Back 70

Two polar covalent bonds.

Front 71

The hydrogen atoms of a water are bonded to the oxygen atom by ____ bonds, whereas neighboring water molecules are held together by ____ bonds.

Back 71

Polar covalent; hydrogen

Front 72

_____ are weak bonds that are not strong enough to hold atoms together to form molecules but are strong enough to form bonds within and around large molecules.

Back 72

Hydrogen bonds

Front 73

Water molecules stick to other water molecules because

Back 73

Hydrogen bonds form between the hydrogen atoms of one water molecules and the oxygen atoms of other water molecules

Front 74

Which of the following statements regarding chemical reactions is false?

Back 74

Some chemical reactions create electrons, others destroy them.

Front 75

In the equation 2 H2 + O2 > 2 H2O, the H2 molecules are _____ and the H2O molecules are _____.

Back 75

Reactants; products

Front 76

If you found a fossilized dinosaur bone, what could be done to determine the age and to the fossil?

Back 76

Analyze the isotopes of carbon in the fossil

Front 77

In plants, the process of photosynthesis produced glucose and oxygen from carbon dioxide and water. Which of the following statements about photosynthesis is true?

Back 77

Idk yet

Front 78

The tendency of water molecules to stick together is referred to as

Back 78

Cohesion

Front 79

Waters surface tensions with n and heat storage capacity are accounted for by its

Back 79

Hydrogen bonds

Front 80

The temperature of evaporation is much higher for water than for alcohol. Without knowing more about the chemistry of alcohol, which of the following is the most logical chemical explanation for this phenomenon?

Back 80

Fewer hydrogen bonds form between alcohol molecules. As a result, less heat is needed for alcohol molecules to break away from solution and enters the air.

Front 81

Which of the following statements about radioactive isotopes is true?

Back 81

The energy emitted by radioactive isotopes can break chemical bonds and cause molecular damage in cells

Front 82

Radioactive isotopes

Back 82

Can be used in conjunction with PET scans to diagnose diseases.

Front 83

When full, the innermost shell of argon contains ______ electrons, and the outermost shell contains ______ electons

Back 83

2;8

Front 84

What happens to an atom if the electrons in the outer shell are altered?

Back 84

The properties of the atom change.

Front 85

A _______ forms when two atoms share electrons

Back 85

Covalent bond

Front 86

A hydrogen atom has one electron. How many covalent bonds can hydrogen form?

Back 86

One

Front 87

Table salt is formed when

Back 87

Sodium donates it's single outer electron to chlorine

Front 88

Which of the following statements provides the most logical chemical explanation of calciums ability to perform such different functions?

Back 88

The bone contains calcium salts, which are less reactive than the calcium ions found in the blood.

Front 89

As ice melts,

Back 89

Hydrogen bonds are broken

Front 90

Which of the following statements about water is false?

Back 90

Idk yet

Front 91

You've made a hot drink by dissolving a teaspoon of instant coffee and a teaspoon of sugar in a cup of hot water. Which of the following statements is true?

Back 91

You've just prepared an aqueous solution

Front 92

Which of the following is dependent on the ability of water molecules to form hydrogen bonds with other molecules besides water?

Back 92

Idk yet

Front 93

Clots in our blood can lead to a heat attack or stroke by blocking blood flow. If a clot were made up my of a mass of proteins, what changed in the proteins to cause them to form the clot?

Back 93

The proteins were no longer soluble in the blood

Front 94

A pharmaceutical company hires a chemist to analyze the purity of the water being used in its drug preparations. If the water is pure, the chemist would expect to find

Back 94

H2O molecules, H+ ions, and OH- ions

Front 95

A solution with a pH of 7 is

Back 95

Neutral

Front 96

Compared to a solution of pH 3, a solution of pH 1 is

Back 96

100 times more acidic

Front 97

Which of the following statements about pH is true?

Back 97

An increase in hydrogen ion concentration means a decrease in pH scale units

Front 98

What combination of these fatty acids could you use to make a fat that is liquid at room temperature?

Back 98

Idk yet

Front 99

Which of the following features is not present in a molecule of caffeine?

Back 99

A carboxyl group

Front 100

Which of the following is most abundant by weight in one cup of whole milk?

Back 100

Idk yet

Front 101

Which hypothesis is most likely to be productive for their initial investigation?

Back 101

The three dimensional structure of the proteins may have been altered

Front 102

Based on your understanding of enzyme structure, which of the following would you recommend that they also investigate?

Back 102

The temperature of the liquid in the washing vat

Front 103

Which of the following experiments would be best for testing the hypothesis that the enzymes did not perform as expected because the temperature was too high?

Back 103

Produce one batch of blue jeans at a high temperature without the enzyme and another batch of blue jeans at a low temperature with the enzyme and then compare how the lightness of the blue jeans varies between batches.

Front 104

If you could design a modified version of the enzyme to ensure that it would function optimally in the harsh conditions of the washing vat, which of the following could you do to achieve this goal?

Back 104

Idk

Front 105

After eating a yummy cake, what molecule do you expect to be most abundant in your digestive system?

Back 105

Monosaccharides

Front 106

After eating a yummy cake, which of the following metabolic processes is likely occurring at the fastest rate?

Back 106

Hydrolysis of glycogen

Front 107

The pH of the stomach is extremely acidic. If you ate a yummy cake, what do you think would happen to the protein that you ingested as it passes through the stomach?

Back 107

The protein would get broken down via dehydration reactions.

Front 108

What types of bonding interactions will occur between molecules of ammonia and water in a bottle of household ammonia?

Back 108

Idk

Front 109

What change is occurring in this figure?

Back 109

Chlorine is filling its third electron shell

Front 110

The figure below shows five water molecules. The hydrogen bonds shown in this figure are each

Back 110

Between an oxygen and a hydrogen atom of different water molecules

Front 111

The figure below shows five water molecules. The hydrogen bonds shown in this figure are each

Back 111

Between an oxygen and a hydrogen atom of different water molecules

Front 112

What type of bond is the arrow pointing to?

Back 112

A polar covalent bond

Front 113

At which point on the graph is the ocean pH the lowest?

Back 113

C

Front 114

At which point on the graph is the ocean pH the lowest?

Back 114

C

Front 115

If you could check the pH of the recommended tablets, you would expect it to be

Back 115

Higher than 7

Front 116

If you were able to chemically analyze your stomach fluids 30 minutes after taking two tablets, you would find

Back 116

Fewer hydrogen ions

Front 117

number

Back 117

115

Front 118

Household ammonia has a pH of 12, household bleach has a pH of 13. Which of the following statements about these substances is true?

Back 118

The ammonia has 10 times as many H+ ions as the bleach

Front 119

Number

Back 119

116

Front 120

Number

Back 120

117

Front 121

What is the atomic difference between uranium 235 and uranium 238

Back 121

Uranium 235 has three fewer neutrons than uranium 238

Front 122

If the atomic mass of uranium is 92, how many neutrons does an atom of uranium 235 have in its nucleus?

Back 122

143

Front 123

Number

Back 123

120

Front 124

Lactose intolerance is the inability to

Back 124

Digest lactose

Front 125

Lactose intoleranxr

Back 125

Does not affect the consumption of beverages made from soy and rice

Front 126

Organic xompounds

Back 126

Always contain carbon

Front 127

Which of the following statements regarding carbon is false?

Back 127

Carbon has the ability to bond with up to six other atoms

Front 128

Which of the following statements about hydrocarbons is false?

Back 128

Hydrocarbons are inorganic compounds

Front 129

A buffer

Back 129

Donates H+ ions when conditions become too basic and accepts H+ ions when conditions become too acidic

Front 130

Propanol and isopropanol are isomers. This means that they have

Back 130

The same molecular formula but different chemical properties

Front 131

A hydroxyl group is

Back 131

Characteristics of alcohols

Front 132

Which of the following is a carbonyl group?

Back 132

-COOH

Front 133

Which of the following is an amino group?

Back 133

-NH2

Front 134

Which of the following statements about the functional groups of organic compounds is false?

Back 134

All functional groups include a carbon atom

Front 135

Which of the following contains a carboxyl and an amino group?

Back 135

Amino acid

Front 136

Which of the following functional groups is capable of regulating gene expression?

Back 136

-CH3

Front 137

Which of the following statements about the monomers and polymers found in living organisms is false?

Back 137

Monomers are joined together by the process of hydrolysis.

Front 138

Which of the following statements about dehydration synthesis is false?

Back 138

Animals digestive systems utilize this process to break down food.

Front 139

The results of dehydration synthesis can be reversed by

Back 139

Hydrolyaia

Front 140

A diabetic who does not utilize insulin properly will metabolize fats instead of glucose. A condition called diabetic ketoacidosis is a common result of excessive fat metabolism causing blood pH values of 7.1 or less. What has happened today the blood pH and why?

Back 140

The pH is below normal because the buffering capacity was exceeded

Front 141

What is the general function of enzymes within a cell?

Back 141

To speed up chemical reactions

Front 142

The molecular formula of most monosaccharides represent a multiple of

Back 142

CH2O

Front 143

Man

Back 143

Polysaccharide

Front 144

Many names for sugars end in the suffix

Back 144

-ose

Front 145

Sucrose is formed

Back 145

From two monosaccharides through dehydration synthesis

Front 146

A disaccharide forms when

Back 146

Two monosaccharides join by dehydration synthesis

Front 147

High fructose corn syrup is made from corn. The main carbohydrate in corn is a polysaccharide called

Back 147

Starch

Front 148

Which of the following lists contains only polysaccharides?

Back 148

Cellulose, starch, and glycogen

Front 149

Cellulose differs from starch in that

Back 149

Most animals cannot break down cellulose, whereas starch is easily digested.

Front 150

Foods that are high in fiber are most likely derived from

Back 150

Plants

Front 151

Which of the following hypothesis would be supported if liquid water were found on Mars and contained evidence of bacteria like organisms?

Back 151

The chemical evolution of life is possible

Front 152

Cows can derive nutrients from cellulose because

Back 152

Their intestinal tract contains cellulose-hydrolyzing microorganisms

Front 153

The storage form of carbohydrates is ___ in animals and ____ in plants.

Back 153

Glycogen, cellulose

Front 154

Which of the following organisms contain polysaccharide chitin?

Back 154

Fungi and insects

Front 155

An oil may be converted into a substance that is solid at room temperature by

Back 155

Adding hydrogens, decreasing the number of double bonds in molecules

Front 156

A diet high in animal products and hydrogenated vegetable margarine may increase the risk for atherosclerosis. This is because

Back 156

Most animal fats are saturated and many hydrogenated vegetable margarines contain high levels of trans fats.

Front 157

What feature of fats makes them hydrophobic?

Back 157

Fats have nonpolar hydrocarbon chains

Front 158

Fatty acids are

Back 158

Hydrophobic

Front 159

Which of the following statements regarding triglyceride molecules is false?

Back 159

Triglycerides are hydrophilic

Front 160

Fatty acids with double bonds between some of their carbons are said to be

Back 160

Unsaturated

Front 161

The development of atherosclerotic disease can result from a diet high in

Back 161

Saturated fats

Front 162

Silicon is an element that is found directly underneath carbon in the periodic table. How many electrons are in the valence shell of a silicon atom?

Back 162

4

Front 163

If you were to add olive oil to your food as part of a diet to lower your risk of atherosclerotic disease, you would use olive oil that

Back 163

Is liquid at room temperature

Front 164

Which of the following statements about animal cell lipids is false?

Back 164

Many like its function as enzymes

Front 165

A phospholipid is composed of

Back 165

One glycerol molecule linked to one phosphate group and two fatty acids

Front 166

Which of the following substances is made of lipids?

Back 166

Steroids

Front 167

A major type of lipid found in cell membrane is

Back 167

Phospholipids

Front 168

Which of the following statements about anabolic steroids is false?

Back 168

They promote bone growth

Front 169

Amino acids can be distinguished from one another by

Back 169

The chemical properties of their R groups

Front 170

Proteins differ from one another because

Back 170

The sequence of amino acids in the polypeptide chain differs from protein to protein

Front 171

Glucose molecules are to starch as____ are to proteins

Back 171

Amino acids

Front 172

Peptide bonds

Back 172

Link amino acids

Front 173

Rank the strength of the bonding interactions taking place in each situation, from the weakest bonds to the strongest bonds.

Back 173

2>1>3

Front 174

Which of the following statements about enzymes is false?

Back 174

They are monomers used to build proteins

Front 175

Which of the following would be correctly classified as a protein?

Back 175

An enzyme

Front 176

Structural proteins

Back 176

Are found in hair and tendons

Front 177

A scientist suspects that the food in an ecosystem may have been contaminated with radioactive nitrogen over a period of months. Which of the following substances could be examined for radioactivity to test the hypothesis?

Back 177

The hair produced by humans living in the ecosystems.

Front 178

Which of the following characteristics of protein will remain intact if the protein is denatured?

Back 178

The number of amino acids in the proteins

Front 179

Proteins cannot be denatured by

Back 179

Freezing

Front 180

The primary structure of a protein is

Back 180

The amino acid sequence of the polypeptide chain

Front 181

Which of the following is an example of secondary structure in a protein?

Back 181

An alpha helix

Front 182

The tertiary structure of a polypeptide refers to

Back 182

The overall three dimensional structure

Front 183

A protein containing more than one polypeptide chair exhibits the ___ level of protein structure

Back 183

Quaternary

Front 184

In ocean acidification, dissolving CO2 gas _____ the pH of the ocean.

Back 184

Lowers

Front 185

Mad cow disease serves as an example of how interdependent ______ and _______ are to protein.

Back 185

Structure; function

Front 186

How are genes used by cells to build proteins?

Back 186

The genes in DNA direct the synthesis of an RNA molecule, which is used to build a protein.

Front 187

Which of the following statements regarding nucleotides is false?

Back 187

Nucleotides contain nitrogenous bases.

Front 188

Which of the following options correctly pairs a polymer and its monomer?

Back 188

DNA, nucleotides

Front 189

DNA differs from RNA because DNA

Back 189

Contains thymine in place of uracil

Front 190

The researchers in your company determine that the wonder food contains carbon, oxygen, and hydrogen. At this point, your researchers can say with certainty that the food

Back 190

Does not include proteins or nucleic acids

Front 191

In what part of the world did the mutation for lactose tolerance first appear?

Back 191

Northern Europe

Front 192

Why did lactose tolerance mutation in the East African herders spread so rapidly within the population?

Back 192

It was a selective advantage for survival during droughts and cold winters

Front 193

If you ate 100% plant based diet, what molecule would you never eat?

Back 193

Cholesterol

Front 194

Do you think that the mutant lysozyme will function similarly to the normal lysozyme?

Back 194

Yes, because both lysine and arginine are positively charged so the tertiary structure and therefore function should be similar

Front 195

These two molecules are structural isomers. What is the difference between them?

Back 195

The location of a double bonded oxygen atom

Front 196

How are these two amino acids attached together?

Back 196

Amino group to carboxylic acid group

Front 197

What combination of these fatty acids could you use to make a fat that is liquid at room temperature?

Back 197

Idk yet

Front 198

Which of the following features is not present in a molecule of caffeine?

Back 198

A carboxyl group

Front 199

Which of the following is most abundant by weight in one cup of whole milk?

Back 199

Idk yet

Front 200

Which of the following foods would be least likely to contribute to the development of coronary heart disease?

Back 200

Fish oil

Front 201

What would you predict would happen if you dropped the phospholipids into the current of vegetable oil?

Back 201

The phospholipids would form a sphere with the heads on the inside.

Front 202

What is the complementary sequence to the DNA strand TCGATGG?

Back 202

AGCTACC

Front 203

Myosin contains what levels of protein structure?

Back 203

Primary, secondary, tertiary, and quaternary

Front 204

These two molecules are structural isomers. What is the difference between them?

Back 204

The location of a double bonded oxygen atom

Front 205

How are these two amino acids attached together?

Back 205

Amino group to carboxylic acid group

Front 206

Using this information, what is the correct equation for the glycolysis chemical reaction?

Back 206

C6H12O6>C3H4O3+H+