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Biology > Benchmark #1 > Flashcards

Benchmark #1 Flashcards

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0
Q

True or false

Enzymes are not reusable

A

False

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1
Q

Explain how enzymes and substrates are like lock and key.

A

Only one substrate can fit in an enzymes active site

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2
Q

What is the job of nucleic acids

A

To transmit genetic information

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3
Q

DNA is an example of this molecule

A

Nucleic acids

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4
Q

What type of bonds are found in saturated fats

A

Single bonds

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5
Q

Are lipids polar or non polar?

A

Non polar

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6
Q

What are the building blocks of nucleic acids

A

Active site

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7
Q

What do we call the area of an enzyme where the substrate joins with the enzyme.

A

Nucleotides

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8
Q

What complex carbohydrate stores energy in the blood of animals?

A

Glycogen

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9
Q

What complex carbohydrate forms the shell (exoskeleton) of insects

A

Chitin

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10
Q

What are the four organic macromolecules that we have studied?

A

Lipids
Protein
Nucleic acids
Carbohydrates

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11
Q

Proteins are a polymer of what monomer?

A

Amino acids

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12
Q

What complex carbonhydrate is used by plants to store energy

A

Starch

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13
Q

This macromolecule is use to form enzymes and hemoglobin?

A

Protein

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14
Q

What do we call the amount of energy needed to start a reaction?

A

Activation energy

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15
Q

What is PH range for acids

A

0-6.9

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16
Q

Which is the strongest base listed below?

pH 8 or pH 11

A

PH11

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17
Q

True or false?

When ice melts, new hydrogen bonds are formed

A

False.

Melting of hydrogen bonds breaks hydrogen bonds

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18
Q

A substance has a pH of 10. To attempt to neutralize it would you add an acid or a base?

A

An acid acts as a buffer

19
Q

You have made some ice tea from a powder mix. Identify the solute and the solvent.

A

Solute= iced tea mix

Solvent= watery

20
Q

Monosaccharides, disaccharides and polysaccharides are all….

A

Carbon hydrates

21
Q

What is the main function is carbonhydrates?

A

To provide energy

22
Q

What complex carbonhydrate is used as a structural molecule in plants?

A

Cellulose

23
Q

True or false?

Living organisms must respond to their environment

A

True

24
Q

True or false?

Living organisms must be able to move

A

False

25
Q

A pure substance that cannot be broken down into simpler substances is called a(n)…

A

Element

26
Q

A pure substance made up if two or more elements chemically combined in a fixed proportion is called a(n)..

A

Compound

27
Q

When water freezes does it become more dense or less dense?

A

Less dense

28
Q

The attraction between molecules of the same substance is called

A

Cohesion

29
Q

The attraction between molecules of different sun stances is called

A

Adhesion

30
Q

What is polarity

A

The uneven distribution is electrons throughout a molecule, causing partial charges.

31
Q

Biology is the study of

A

Life

32
Q

This is an “If … Then” statement.

A

Hypothesis

33
Q

The solution is a light red color is an example of a(n)…

A

Observation

34
Q

The scientific method begins with…

A

Making an observations or identifying a problem.

35
Q

The variable in an experiment that the researcher is studying is the…

A

Independent, or manipulated, variable

36
Q

The variable in an experiment that we are looking at for a change is the…

A

Dependent or responding variable

37
Q

The process of keeping a stable internal environment is called…

A

Homeostasis

38
Q

How many independent variables can be tested in a well designed experiment

A

One

39
Q

Complete the scentence…

Reactions begin with ____ and end with_____.

A

Reactants

Products

40
Q

Substances that change the speed of a reaction are called…

A

Enzymes

41
Q

What three factors affect the function is an enzyme?

A

Temperature
pH
Amount of enzyme

42
Q

DNA is an example of this macromolecule

A

Nucleic acids

43
Q

What suffix do many sugars end with?

A

-ose

44
Q

Organic molecules must contain the element

A

Carbon

45
Q

Which type of fat is considered to be a “healthy fat?”

A

Unsaturated fat

46
Q

What macromolecule stores energy for later use and provides insulation in cold climates?

A

Lipids

Biology (5 decks)

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