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Biology > Exam 1 > Flashcards

Exam 1 Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

Localize group of organisms that belong to the same species is called a

A

Population

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2
Q

What is the major distinguishing characteristic of fungi

A

Feed on the composed nutrients

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3
Q

All the organisms on your campus make up

A

A community

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4
Q

Which of the following types of cells utilize deoxyribonucleic acid as their genetic material but do not have their DNA encased within a nuclear envelope

A

Archaea

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5
Q

To understand the chemical basis of DNA. This is an example of the application of which concept of the study of biology?

A

Reductionism

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6
Q

Which branch of biology is concerned with the meaning and classifying organisms?

A

Taxonomy

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7
Q

Prokaryotes are classified as belonging to two different domains. What are the domains?

A

Bacteria and Archaea

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8
Q

Which of the following best demonstrates The unity among organisms?

A

The structure and function of DNA

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9
Q

The branch of biology that explains both the diversely and the unity of life is

A

Evolution

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10
Q

Which of these is most closely associated with Darwin

A

Natural selection

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11
Q

Unequal reproductive success

A

Can lead to natural selection

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12
Q

Which of these is required for natural selection to occur?

A

All of the above

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13
Q

In a scientific experiment the control group

A

Serves as a basis of comparison with the experimental group

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14
Q

How do hypotheses differ from theories?

A

Theories are more comprehensive than hypotheses

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15
Q

A hypothesis is a

A

Tentative answer to a question

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16
Q

Which kingdom of Eukarya consist primarily of unicellular organisms?

A

Protista

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17
Q

I newly discovered in multicellular organism obtains food by digesting dead organisms, such an organism is most likely a member of the kingdom

A

Fungi

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18
Q

Members of the kingdom plantae differ from members of the other kingdoms of eukarya in that most members of the kingdom plantae

A

Produce their own food

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19
Q

The way earth moves about the sun is most like

A

An electron moving around the nucleus of an atom

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20
Q

Isotopes of an element have the same number of ____ and different numbers of ____

A

Protons…neutrons

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21
Q

____Is an example of an element

A

Carbon

22
Q

The four most common elements found in living things are

A

Carbon oxygen nitrogen and hydrogen

23
Q

Which of the following elements essential to life is a trace element?

A

Iodine

24
Q

And Adam with a positive charge has____

A

More protons than electrons

25
Q

All Adams of the same element have the same number of

A

Protons

26
Q

An Atom’s ____are found in its nucleus

A

Neutrons and protons

27
Q

Beryllium’s atomic mass is 9 and it’s atomic number is 4 How many neutrons are found in a beryllium atom?

A

5

28
Q

An uncharged Adam of gold has an atomic number of 79 and a atomic mass of 197. This Adam has____protons,____neutrons, and___electrons

A

79… 118… 79

29
Q

Why is water considered a polar molecule?

A

The oxygen end of the molecule has a slight negative charge, and the hydrogen and has a slight positive charge

30
Q

The tendency of molecules of the same kind of stick together is called___

A

Cohesion

31
Q

How do you radioactive isotopes differ from isotopes?

A

Radioactive isotopes are on stable; isotopes are stable

32
Q

Second electron shell of an Adam can hold a maximum of____electrons

A

8

33
Q

Nitrogen has an atomic number of seven; therefore, it has____electrons in its outer most electron shell

A

5

34
Q

An atom with an electrical charge is

A

Ion

35
Q

What name is given to bonds that involve the sharing of electrons?

A

Covalent

36
Q

Sweating cause your body by

A

Evaporative cooling

37
Q

Adjacent water molecules are joined by____bonds

A

Hydrogen

38
Q

As water freezes,

A

It’s molecules move further apart

39
Q

A base_

A

Removes H+ ions from the solution

40
Q

The lower the pH of a solution, the

A

More acidic the solution

41
Q

Relative to a pH of six, a pH of 4 has a

A

100 times higher H+ concentration

42
Q

Why does ice float in liquid water?

A

Hydrogen bonds stabilize and keep the molecules of ice for the part then the water molecules of liquid water

43
Q

Water molecules are able to form hydrogen bonds with

A

Compounds that have polar covalent bonds

44
Q

If a solution has a pH of 7, this means that

A

The concentration of H+ ions in the water equals the concentration of OH- ions in the water

45
Q

The partial negative charge any molecule of water occurs because

A

The electrons shared between the oxygen and hydrogen atoms spend more time around the oxygen atom then around the hydrogen atoms nucleus

46
Q

What results from an unequal sharing of electrons between atoms?

A

A polar covalent bond

47
Q

Which bond or interaction would be difficult to disrupt one compounds are put into water?

A

Covalent bond

48
Q

Which of the following is a correct sequence of levels in life’s hierarchy, proceeding downward from an individual animal

A

Nervous system, brain, nervous tissue, nerve cell

49
Q

Once labor begins in childbirth contractions increase in intensity and frequency until delivery. increasing labor contractions of childbirth or example of which type of regulation

A

Positive feedback

50
Q

The hydrogen and oxygen of a water molecule or held together by____bonds

A

Covalent

Biology (11 decks)

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