Exam 1

Question 1

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

Answer 1

Population

Question 2

What is the major distinguishing characteristic of fungi

Answer 2

Feed on the composed nutrients

Question 3

All the organisms on your campus make up

Answer 3

A community

Question 4

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

Answer 4

Archaea

Question 5

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

Answer 5

Reductionism

Question 6

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

Answer 6

Taxonomy

Question 7

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

Answer 7

Bacteria and Archaea

Question 8

Which of the following best demonstrates The unity among organisms?

Answer 8

The structure and function of DNA

Question 9

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

Answer 9

Evolution

Question 10

Which of these is most closely associated with Darwin

Answer 10

Natural selection

Question 11

Unequal reproductive success

Answer 11

Can lead to natural selection

Question 12

Which of these is required for natural selection to occur?

Answer 12

All of the above

Question 13

In a scientific experiment the control group

Answer 13

Serves as a basis of comparison with the experimental group

Question 14

How do hypotheses differ from theories?

Answer 14

Theories are more comprehensive than hypotheses

Question 15

A hypothesis is a

Answer 15

Tentative answer to a question

Question 16

Which kingdom of Eukarya consist primarily of unicellular organisms?

Answer 16

Protista

Question 17

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

Answer 17

Fungi

Question 18

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

Answer 18

Produce their own food

Question 19

The way earth moves about the sun is most like

Answer 19

An electron moving around the nucleus of an atom

Question 20

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

Answer 20

Protons…neutrons

Question 21

____Is an example of an element

Answer 21

Carbon

Question 22

The four most common elements found in living things are

Answer 22

Carbon oxygen nitrogen and hydrogen

Question 23

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

Answer 23

Iodine

Question 24

And Adam with a positive charge has____

Answer 24

More protons than electrons

Question 25

All Adams of the same element have the same number of

Answer 25

Protons

Question 26

An Atom's ____are found in its nucleus

Answer 26

Neutrons and protons

Question 27

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

Answer 27

5

Question 28

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

Answer 28

79… 118… 79

Question 29

Why is water considered a polar molecule?

Answer 29

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

Question 30

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

Answer 30

Cohesion

Question 31

How do you radioactive isotopes differ from isotopes?

Answer 31

Radioactive isotopes are on stable; isotopes are stable

Question 32

Second electron shell of an Adam can hold a maximum of____electrons

Answer 32

8

Question 33

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

Answer 33

5

Question 34

An atom with an electrical charge is

Answer 34

Ion

Question 35

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

Answer 35

Covalent

Question 36

Sweating cause your body by

Answer 36

Evaporative cooling

Question 37

Adjacent water molecules are joined by____bonds

Answer 37

Hydrogen

Question 38

As water freezes,

Answer 38

It's molecules move further apart

Question 39

A base_

Answer 39

Removes H+ ions from the solution

Question 40

The lower the pH of a solution, the

Answer 40

More acidic the solution

Question 41

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

Answer 41

100 times higher H+ concentration

Question 42

Why does ice float in liquid water?

Answer 42

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

Question 43

Water molecules are able to form hydrogen bonds with

Answer 43

Compounds that have polar covalent bonds

Question 44

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

Answer 44

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

Question 45

The partial negative charge any molecule of water occurs because

Answer 45

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

Question 46

What results from an unequal sharing of electrons between atoms?

Answer 46

A polar covalent bond

Question 47

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

Answer 47

Covalent bond

Question 48

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

Answer 48

Nervous system, brain, nervous tissue, nerve cell

Question 49

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

Answer 49

Positive feedback

Question 50

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

Answer 50

Covalent