Chapter 2

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問題一覧

Anything that occupies space and has mass is considered

Matter

Negatively charged particles that move in orbits around the atomic nucleus are

Electrons

The sum of the protons and neutrons in an atom is known as

Atomic mass

Which of the following has the smallest mass?

Electron

Neutral (uncharged) atoms contain the same number of electrons as

Protons

Helium (atomic number 2) is stable because it has 2 electrons which satisfies the octet rule

True

The third shell holds 18 electrons, so chlorine atomic number 17, will form bonds by

Picking up one more electron to fullfill octet rule (full or 8)

The bond formed by sharing electron pairs is

Covalent

The bond formed by transferring electrons is

Ionic

Ionic bonds are formed because

Opposite charges attract

When electrons are shared unequally between atoms in a molecule the bond between atoms is

Polar covalent

What type of bond forms between the H atoms on one water molecule and the O atoms of another water molecule?

Hydrogen bonds

Positively charged atoms are

Cations

The element iodine has the atomic number 53 and an atomic mass of 127. Which of the following is correct for I?

53 elections, 53 protons, 74 neutrons

When salts are dissolved in water they dissociate into particles called

Electrolytes

Which of the following bonds is strongest?

Covalent

Water is a/an

Polar molecule

The properties of water are primarily due to

Hydrogen bonding between water molecules

All of the following will increase the rate of a chemical reaction except

Decreasing temperature

A substance that releases hydrogen ions in solution is a/an

Acid

The hydrogen ion concentration would be highest in a solution with a pH of

2.5

Which solution is acidic?

H2O + H+ + Cl-

The difference in hydrogen ion concentration between a solution with a pH of 9 and a solution with a pH of 5 is

10,000 times

Which of the following would make a good buffer?

Carbonic acid and sodium bicarbonate

A chemical reaction that builds up or makes bonds is a

Anabolic

The atomic mass of Na is 23 and the atomic mass of Cl is 35. A 1 M solution of NaCl would contain ___ grams of NaCl in 1 liter of water

The sum of all chemical reactions occurring in an organism is/are

Metabolism

Life is said to be carbon based because carbon atoms make up

All

Nitrogen is always found in which molecule?

Protein

Which of the following is most likely a carbohydrate?

C6H12O6

The building blocks or subunits joined to form a carbohydrate are

Monosaccharides

Which of the following is a disaccharide?

Sucrose

The amino acid sequence of a protein is known as the

Primary structure

The building blocks or subunits joined to form a protein are

Amino acids

The bonds that join the subunits to form a protein are

Peptide bonds

Hydrogen bonding helps determine the structure of proteins at all levels except

Primary

The secondary structure of a protein would not contain or be characterized by

Several peptide subunits joined together

A triglyceride has

1 glycerol and 3 fatty acids

A polyunsaturated fat has

More than one double bond in chain of carbon atoms

An enzyme/substrate complex yields a product and

An unchanged enzyme

The subunits of a strand of DNA are

Nucleotides

Which of the nitrogenous bases will bond with guanine?

Cytosine

The sugar in RNA is

Ribose

Which of the following is not correct concerning DNA and RNA?

They are inorganic molecules

DNA does not have

Uracil

The most readily available form of stored energy inside the cell is found in

ATP

The science of interaction between atoms and molecules

Chemistry

Kinetic energy is

Energy at work

Smallest particles of an element that retain the characteristics of that element

Atom

Protons, neutrons, and electrons are

Subatomic particles

Protons and neutrons are found

In the nucleus

Atoms that have the same atomic number (are of the same element) but different atomic weights

Isotopes

The first energy level in an atom can contain up to

2 bonding electrons

The second energy level of an atom can hold up to

8 bonding electrons

The third energy level of an atom can hold more than 8 elections but only requires 8 to be stable

True

Attractive forces that bind the atomic nuclei of two atoms together

Chemical bond

The number of extra or missing electrons on the outermost shell of an atom

Valence electrons

Covalent bonds are ___ than ionic bonds

Stronger

Atoms share pairs of electrons

Covalent bond

Covalent bonds are ___ common in organisms

When electrons are equally shared

Non-polar covalent bond

Electrons are ___ in ionic bonds

Transferred

Unequal sharing of electrons

Polar covalent bond

The sum of all the atomic weights of all atoms in a molecule. Also called formula weight

Molecular weight

Number of atoms that weighs the atomic mass (in grams)

Mole

Atoms or molecules combine to form a larger molecule

Synthesis reaction

A molecule is broken down

Decomposition reaction

An electron donor is oxidized while an electron acceptor is reduced

Oxidation reduction reaction

Cellular respiration is an example of a ___ reaction

Oxidation-reduction reaction

Neutralization is an example of ____ reactions

Exchange

Smaller molecules move

Faster

Activation energy is the minimum quantity of energy required to produce a chemical reaction

True

Exergonic reactions

Release energy

Endergonic reactions

Require/absorb energy

ATP hydrolysis is an ___ reaction

Exergonic

Exergonic reactions fuel endergonic reactions

True

Metabolism and muscle contraction are examples of

Endergonic reactions

Acids are proton donors

True

Salt dissolves into negative and positive

Ions

Bicarbonate ions take up excess

Hydrogen ions

Carbonic acid takes up excess

Hydroxide ions

Monomers are bonded together by

Dehydration synthesis

Organic molecules are broken down by

Hydrolysis

What stabilizes the tertiary structure of a protein chain?

Hydrophobic interaction

The localized, repetitive twisting or folding of the polypeptide chain in a protein structure is the

Secondary structure

What causes protein denaturation?

Increased temp and changing pH

Is protein desaturation reversible?

Maybe

A nucleotide that provides energy for most chemical reactions within cells

ATP

What is protein denaturation?

Disruption of the 3D structure

211 exam 2 ch18 part 1

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211 exam 2 ch18 part 1

100問 • 1年前

eiren

211 exam 2 ch18 part 2

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211 exam 2 ch18 part 2

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211 exam 2 ch19 part 1

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211 exam 2 ch19 part 1

The cardiac cycle

The cardiac cycle

211 exam 2 ch22

211 exam 2 ch22

211 lab quiz 4

211 lab quiz 4

211 exam 3 ch 24

211 exam 3 ch 24

211 lab quiz 4 cat anatomy

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211 lab quiz 4 cat anatomy

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211 lab quiz 4 reproductive anatomy extra

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211 lab quiz 4 reproductive anatomy extra

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211 lab quiz 4 urinalysis

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211 lab quiz 4 urinalysis

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211 lab quiz 4 urinary system

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211 lab quiz 4 urinary system

Urinary system

Urinary system

211 exam 3 ch 23

211 exam 3 ch 23

211 exam 3 ch 25

211 exam 3 ch 25

211 exam 3 ch 26

211 exam 3 ch 26

211 lab quiz 3 terms

211 lab quiz 3 terms

General practice quiz

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General practice quiz

Quiz 5 histology

Quiz 5 histology

Hormones

Hormones

Diabetes

Diabetes

Reproductive system

Reproductive system

Endocrine system

Endocrine system

Blood

Blood

Lymphatic system

Lymphatic system

Cardiovascular system

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Cardiovascular system

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Cardiovascular system; Blood vessels

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Cardiovascular system; Blood vessels

Respiratory system

Respiratory system

Urinary System

Urinary System

Digestive system

Digestive system

Reproductive system

Reproductive system

Terminology

Terminology

Ch 1

Ch 1

Mini practical

Mini practical

Chapter 2

Chapter 2

Chapter 4

Chapter 4

Chapter 6

Chapter 6

Chapter 7

Chapter 7

Chapter l

Chapter l

Chapter 4

Chapter 4

Chapter 5 Microbial Metabolism

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Chapter 5 Microbial Metabolism

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eiren

Chapter 5 Microbial Metabolism

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Chapter 5 Microbial Metabolism

Mini practical 2

Mini practical 2

Skills 8

Skills 8

Chapter 6 Microbial Growth

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Chapter 6 Microbial Growth

Skills 7

Skills 7

Chapter 7 Control Of Microbial Growth

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Chapter 7 Control Of Microbial Growth

Skills 5

Skills 5

Chapter 8 Microbial Genetics

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Chapter 8 Microbial Genetics

Skills 4

Skills 4

Skills 6

Skills 6

Chapter 9

Chapter 9

Chapter 10

Chapter 10

Chapter 11

Chapter 11

Chapter 13

Chapter 13

Chapter 12 Fungi, Algae, Protozoa, Multicellular Parasites

eiren · 65問 · 1年前

Chapter 12 Fungi, Algae, Protozoa, Multicellular Parasites

65問 • 1年前

eiren

問題一覧

Anything that occupies space and has mass is considered

Matter

Negatively charged particles that move in orbits around the atomic nucleus are

Electrons

The sum of the protons and neutrons in an atom is known as

Atomic mass

Which of the following has the smallest mass?

Electron

Neutral (uncharged) atoms contain the same number of electrons as

Protons

Helium (atomic number 2) is stable because it has 2 electrons which satisfies the octet rule

True

The third shell holds 18 electrons, so chlorine atomic number 17, will form bonds by

Picking up one more electron to fullfill octet rule (full or 8)

The bond formed by sharing electron pairs is

Covalent

The bond formed by transferring electrons is

Ionic

Ionic bonds are formed because

Opposite charges attract

When electrons are shared unequally between atoms in a molecule the bond between atoms is

Polar covalent

What type of bond forms between the H atoms on one water molecule and the O atoms of another water molecule?

Hydrogen bonds

Positively charged atoms are

Cations

The element iodine has the atomic number 53 and an atomic mass of 127. Which of the following is correct for I?

53 elections, 53 protons, 74 neutrons

When salts are dissolved in water they dissociate into particles called

Electrolytes

Which of the following bonds is strongest?

Covalent

Water is a/an

Polar molecule

The properties of water are primarily due to

Hydrogen bonding between water molecules

All of the following will increase the rate of a chemical reaction except

Decreasing temperature

A substance that releases hydrogen ions in solution is a/an

Acid

The hydrogen ion concentration would be highest in a solution with a pH of

2.5

Which solution is acidic?

H2O + H+ + Cl-

The difference in hydrogen ion concentration between a solution with a pH of 9 and a solution with a pH of 5 is

10,000 times

Which of the following would make a good buffer?

Carbonic acid and sodium bicarbonate

A chemical reaction that builds up or makes bonds is a

Anabolic

The atomic mass of Na is 23 and the atomic mass of Cl is 35. A 1 M solution of NaCl would contain ___ grams of NaCl in 1 liter of water

The sum of all chemical reactions occurring in an organism is/are

Metabolism

Life is said to be carbon based because carbon atoms make up

All

Nitrogen is always found in which molecule?

Protein

Which of the following is most likely a carbohydrate?

C6H12O6

The building blocks or subunits joined to form a carbohydrate are

Monosaccharides

Which of the following is a disaccharide?

Sucrose

The amino acid sequence of a protein is known as the

Primary structure

The building blocks or subunits joined to form a protein are

Amino acids

The bonds that join the subunits to form a protein are

Peptide bonds

Hydrogen bonding helps determine the structure of proteins at all levels except

Primary

The secondary structure of a protein would not contain or be characterized by

Several peptide subunits joined together

A triglyceride has

1 glycerol and 3 fatty acids

A polyunsaturated fat has

More than one double bond in chain of carbon atoms

An enzyme/substrate complex yields a product and

An unchanged enzyme

The subunits of a strand of DNA are

Nucleotides

Which of the nitrogenous bases will bond with guanine?

Cytosine

The sugar in RNA is

Ribose

Which of the following is not correct concerning DNA and RNA?

They are inorganic molecules

DNA does not have

Uracil

The most readily available form of stored energy inside the cell is found in

ATP

The science of interaction between atoms and molecules

Chemistry

Kinetic energy is

Energy at work

Smallest particles of an element that retain the characteristics of that element

Atom

Protons, neutrons, and electrons are

Subatomic particles

Protons and neutrons are found

In the nucleus

Atoms that have the same atomic number (are of the same element) but different atomic weights

Isotopes

The first energy level in an atom can contain up to

2 bonding electrons

The second energy level of an atom can hold up to

8 bonding electrons

The third energy level of an atom can hold more than 8 elections but only requires 8 to be stable

True

Attractive forces that bind the atomic nuclei of two atoms together

Chemical bond

The number of extra or missing electrons on the outermost shell of an atom

Valence electrons

Covalent bonds are ___ than ionic bonds

Stronger

Atoms share pairs of electrons

Covalent bond

Covalent bonds are ___ common in organisms

When electrons are equally shared

Non-polar covalent bond

Electrons are ___ in ionic bonds

Transferred

Unequal sharing of electrons

Polar covalent bond

The sum of all the atomic weights of all atoms in a molecule. Also called formula weight

Molecular weight

Number of atoms that weighs the atomic mass (in grams)

Mole

Atoms or molecules combine to form a larger molecule

Synthesis reaction

A molecule is broken down

Decomposition reaction

An electron donor is oxidized while an electron acceptor is reduced

Oxidation reduction reaction

Cellular respiration is an example of a ___ reaction

Oxidation-reduction reaction

Neutralization is an example of ____ reactions

Exchange

Smaller molecules move

Faster

Activation energy is the minimum quantity of energy required to produce a chemical reaction

True

Exergonic reactions

Release energy

Endergonic reactions

Require/absorb energy

ATP hydrolysis is an ___ reaction

Exergonic

Exergonic reactions fuel endergonic reactions

True

Metabolism and muscle contraction are examples of

Endergonic reactions

Acids are proton donors

True

Salt dissolves into negative and positive

Ions

Bicarbonate ions take up excess

Hydrogen ions

Carbonic acid takes up excess

Hydroxide ions

Monomers are bonded together by

Dehydration synthesis

Organic molecules are broken down by

Hydrolysis

What stabilizes the tertiary structure of a protein chain?

Hydrophobic interaction

The localized, repetitive twisting or folding of the polypeptide chain in a protein structure is the

Secondary structure

What causes protein denaturation?

Increased temp and changing pH

Is protein desaturation reversible?

Maybe

A nucleotide that provides energy for most chemical reactions within cells

ATP

What is protein denaturation?

Disruption of the 3D structure