Ch 2 Review

• This is the sum of all chemical reactions carried out in an organism

A.HomeostasisB.MetabolismC.AdaptationD.Development

• This is the sum of all chemical reactions carried out in an organism

A.HomeostasisB.MetabolismC.AdaptationD.Development

The information gathered from experiments is called ______.

a. the research c. the datab. the hypothesis d. the conclusion

The information gathered from experiments is called ______.

a. the research c. the datab. the hypothesis d. the conclusion

A structured procedure for collecting information to test a hypothesis is an ________.

a. principle c. controlb. theory d. experiment

A structured procedure for collecting information to test a hypothesis is an ________.

a. principle c. controlb. theory d. experiment

A testable explanation for a question or problem is an ______.

a. experiment c. observationb. hypothesis d. verifiable law

A testable explanation for a question or problem is an ______.

a. experiment c. observationb. hypothesis d. verifiable law

An experiment is _________.a. a way to prove a fact b.a test of a hypothesis c. an observation about natured. a problem that may be solved

An experiment is _________.a. a way to prove a fact b.a test of a hypothesis c. an observation about natured. a problem that may be solved

The part of an experiment in which all the conditions are kept the same is the ______.

a. hypothesis c. conclusionb. control d. independent variable

The part of an experiment in which all the conditions are kept the same is the ______.

a. hypothesis c. conclusionb. control d. independent variable

The _____ are the variables that must remain the same in all of the experiments.

a. Independent Variableb. Controlled variablesc. Dependent Variabled. Control Experiment

The _____ are the variables that must remain the same in all of the experiments.

a. Independent Variableb. Controlled variablesc. Dependent Variabled. Control Experiment

The variable that is deliberately changed is called __________.

a. Independent Variableb. Controlled variablesc. Dependent Variabled. Control Experiment

The variable that is deliberately changed is called __________.

a. Independent Variableb. Controlled variablesc. Dependent Variabled. Control Experiment

The _____ Variable that is observed and that changes in response to manipulated variable. (can be measured)

a. Independent Variableb. Controlled variablesc. Dependent Variabled. Control Experiment

The _____ Variable that is observed and that changes in response to manipulated variable. (can be measured)

a. Independent Variableb. Controlled variablesc. Dependent Variabled. Control Experiment

• An investigation was done to see if keeping the lights on for different amounts of time each day affects the number of eggs chickens laid

• Independent variable• Dependent variable• Controlled variables• Control Experiment

• An investigation was done to see if keeping the lights on for different amounts of time each day affects the number of eggs chickens laid

• Independent variable- amount of light• Dependent variable- # of eggs• Controlled variables- same age chickens, same

space to live, same food• Control Experiment- chickens with normal

night and day light

3Li

Lithium6.9

How many protons neutronselectrons are there

3Li

Lithium6.9

How many protons 3neutrons 4electrons are there 3

• What is the ability to do work?A.SkillB.EnergyC.MetabolismD.Food

• What is the ability to do work?A.SkillB.EnergyC.MetabolismD.Food

•Compare and Contrast DNA and RNA

DNA and RNA both have the bases Adenine, Guanine and Cytosine. They are both made up of sugar groups, phosphates and bases. However, DNA is double stranded and can not leave the nucleus. RNA is single stranded and can leave the nucleus. RNA has the sugar group Ribose and DNA has the sugar group Deoxyribose.

1. Which represents the correct sequence of events during a scientific method

A. experiment, hypothesize, observe, concludeB. observe, hypothesize, experiment, concludeC. hypothesize, experiment, conclude, observeD. conclude, experiment, hypothesize, observe

1. Which represents the correct sequence of events during a scientific method

A. experiment, hypothesize, observe, concludeB. observe, hypothesize, experiment, concludeC. hypothesize, experiment, conclude, observeD. conclude, experiment, hypothesize, observe

• Draw an atom with the atomic number of 3 and the atomic mass of 6.9 label the nucleus, electrons, protons, neutrons and valence shell

nucleus

Valence Shell

-Electrons+ Protons0 Neutrons

Mechanical energy• A. Stored in substances such as food and coal• _____ B. Produced by flow of electrons powers

TV• _____ Chemical energy C. Form of radiant energy

moves in waves ex sun• _____ Heat energy D. Stored in nucleus of atom• ____ Electrical energy AB. Produced by

molecular motion of matter ex. Rubbing hands• _____ AC. Moving object performing work

ex pedaling bike

Mechanical energy

• A. Produced by molecular motion of matter ex. Rubbing hands

• B. Produced by flow of electrons powers TV• C. Form of radiant energy moves in waves ex

sun• D. Moving object performing work ex pedaling

bike

Mechanical energy

• A. Produced by molecular motion of matter ex. Rubbing hands

• B. Produced by flow of electrons powers TV• C. Form of radiant energy moves in waves ex

sun• D. Moving object performing work ex pedaling

bike

Light Energy

• A. Produced by molecular motion of matter ex. Rubbing hands

• B. Produced by flow of electrons powers TV• C. Form of radiant energy moves in waves ex

sun• D. Moving object performing work ex pedaling

bike

Light Energy

• A. Produced by molecular motion of matter ex. Rubbing hands

• B. Produced by flow of electrons powers TV• C. Form of radiant energy moves in waves ex

sun• D. Moving object performing work ex pedaling

bike

Heat Energy

• A. Produced by molecular motion of matter ex. Rubbing hands

• B. Produced by flow of electrons powers TV• C. Form of radiant energy moves in waves ex

sun• D. Moving object performing work ex pedaling

bike

Heat Energy

• A. Produced by molecular motion of matter ex. Rubbing hands

• B. Produced by flow of electrons powers TV• C. Form of radiant energy moves in waves ex

sun• D. Moving object performing work ex pedaling

bike

Chemical Energy

A. Produced by flow of electrons powers TVB. Stored in substances such as food and coalC. Form of radiant energy moves in waves ex

sunD. Produced by molecular motion of matter ex.

Rubbing hands

Chemical Energy

A. Produced by flow of electrons powers TVB. Stored in substances such as food and coalC. Form of radiant energy moves in waves ex

sunD. Produced by molecular motion of matter ex.

Rubbing hands

Electrical Energy

A. Produced by flow of electrons powers TVB. Stored in substances such as food and coalC. Form of radiant energy moves in waves ex

sunD. Produced by molecular motion of matter ex.

Rubbing hands

Electrical Energy

A. Produced by flow of electrons powers TVB. Stored in substances such as food and coalC. Form of radiant energy moves in waves ex

sunD. Produced by molecular motion of matter ex.

Rubbing hands

Nuclear energy

A. Stored in substances such as food and coalB. Produced by flow of electrons powers TVC. Form of radiant energy moves in waves ex

sunD. Stored in nucleus of atom

Nuclear energy

A. Stored in substances such as food and coalB. Produced by flow of electrons powers TVC. Form of radiant energy moves in waves ex

sunD. Stored in nucleus of atom

_____ What affects enzyme activityA. pHB. temperatureC. proteinsD. A and B

_____ What affects enzyme activityA. pHB. temperatureC. proteinsD. A and B

_____ DNA’s sugar group is __________.A.RiboseB. SucroseC. BaseD. Deoxyribose

_____ DNA’s sugar group is __________.A.RiboseB. SucroseC. BaseD. Deoxyribose

In a chemical reaction the beginning chemicals used in the reaction are called ____________.

A.phosphatesB. productsC. reactantsD. enzymes

In a chemical reaction the beginning chemicals used in the reaction are called ____________.

A.phosphatesB. productsC. reactantsD. enzymes

_____ These two subatomic particles are in the nucleus of the atom

A)Nucleolus & Electrons B) Neutrons & Electrons C) Protons & NucleolusD) Protons & Neutrons

_____ These two subatomic particles are in the nucleus of the atom

A)Nucleolus & Electrons B) Neutrons & Electrons C) Protons & NucleolusD) Protons & Neutrons

If you loose electrons you will have a ________ and if you gain you will have a ______ Charge.

A)positive, negativeB) neutral, positiveC) negative, positiveD) negative, neutral

If you loose electrons you will have a ________ and if you gain you will have a ______ Charge.

A)positive, negativeB) neutral, positiveC) negative, positiveD) negative, neutral

• An ion is formed when an atom _________ an electron

A)loosesB) gains C) gains or loosesD) none of these

• An ion is formed when an atom _________ an electron

A)loosesB) gains C) gains or loosesD) none of these

In a DNA molecule, adenine pairs with _________.

A.thymineB. uracilC. cytosineD. guanine

In a DNA molecule, adenine pairs with _________.

A.thymineB. uracilC. cytosineD. guanine

• In a DNA molecule, Guanine pairs with _________.

• A. thymine• B. adenine• C. cytosine• D. uracil

• In a DNA molecule, Guanine pairs with _________.

• A. thymine• B. adenine• C. cytosine• D. uracil

• In a chemical reaction the results of the reaction are called _________.

• A. reactants• B. products• C. phosphates• D. enzymes

• In a chemical reaction the results of the reaction are called _________.

• A. reactants• B. products• C. phosphates• D. enzymes

Water differs from most other substances because it

• A. Expands as heated• B. Contracts as cooled • C. Expands as freezes • D. Contracts as freezes

Water differs from most other substances because it

• A. Expands as heated• B. Contracts as cooled • C. Expands as freezes • D. Contracts as freezes

The term that describes the reaction between an antacid and stomach acid is____.

• A. neutralization• B. combustion • C. respiration• D. decomposition

The term that describes the reaction between an antacid and stomach acid is____.

• A. neutralization• B. combustion • C. respiration• D. decomposition

• Which of the following represents a compound?

•

• A. Na• B. O2

• C. Ca• D. CO2

• Which of the following represents a compound?

•

• A. Na• B. O2

• C. Ca• D. CO2

• What six elements are the most commonly found in living organisms

A.Carbohydrates, Lipids, Fats, Nucleic Acids, Proteins, Enzymes

B. Carbon, Helium, Nitrogen, Hydrogen, Phosphorous, Sulfur

C. Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorous, Sulfur

D. Carbon, Water, Oxygen, Hydrogen, Carbon dioxide, Nitrogen

• What six elements are the most commonly found in living organisms

A.Carbohydrates, Lipids, Fats, Nucleic Acids, Proteins, Enzymes

B. Carbon, Helium, Nitrogen, Hydrogen, Phosphorous, Sulfur

C. Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorous, Sulfur

D. Carbon, Water, Oxygen, Hydrogen, Carbon dioxide, Nitrogen

• at happens to excess carbohydrates in the body?

•

• A. Burned • B. Used for Metabolism • C. Become Fat • D. Eliminated as Waste

• at happens to excess carbohydrates in the body?

•

• A. Burned • B. Used for Metabolism • C. Become Fat • D. Eliminated as Waste

• Which of the following nutrients is most directly used for growth and repair in tissues?

•

• A. proteins• B. sugars• C. lipids• D. starches

• Which of the following nutrients is most directly used for growth and repair in tissues?

•

• A. proteins• B. sugars• C. lipids• D. starches

• Type of bond in which electrons are shared• A. Covalent Bond• B. Ionic Bond• C. Hydrogen Bond• D Metal Bond

• Type of bond in which electrons are shared• A. Covalent Bond• B. Ionic Bond• C. Hydrogen Bond• D Metal Bond

• Type of bond in which there is a giving and taking of electrons.

• A. Covalent Bond• B. Ionic Bond• C. Hydrogen Bond• D Metal Bond

• Type of bond in which there is a giving and taking of electrons.

• A. Covalent Bond• B. Ionic Bond• C. Hydrogen Bond• D Metal Bond

• Type of bond that holds water molecules together

• A. Covalent Bond• B. Ionic Bond• C. Hydrogen Bond• D Metal Bond

• Type of bond that holds water molecules together

• A. Covalent Bond• B. Ionic Bond• C. Hydrogen Bond• D Metal Bond

• 0 7 14• <------------------------------------------------->

A B C• _____ Acids• _____ Bases• _____ Neutral

• 0 7 14• <------------------------------------------------->

A B C• __A___ Acids• ___C__ Bases• ___B__ Neutral

• amount of energy needed to start a chemical reaction

A.Activation energyB.Start up energyC.EnzymeD.Catalyst

• amount of energy needed to start a chemical reaction

A.Activation energyB.Start up energyC.EnzymeD.Catalyst

• Protein that speeds up the rate of a reaction

A.Activation energyB.Start up energyC.EnzymeD.Catalyst

• Protein that speeds up the rate of a reaction

A.Activation energyB.Start up energyC.EnzymeD.Catalyst