biology quiz chapter 2

Question 1

Which one of the following statements about brown pelicans is false?

a) are scavengers, feeding slowly by skimming up floating remains of fish
b) can nest on the ground or in trees
c) feed primarily on fish
d) were greatly affected by human use of pesticides

Answer 1

Are scavengers, feeding slowly by skimming up floating remains of fish

Question 2

Life is organized in a hierarchical fashion. Which one of the following sequences illustrates that hierarchy as it increases in complexity?

Answer 2

Molecule, cell, tissue, organ, organ system, population, community, ecosystem

Question 3

The tree in your backyard is home to two cardinals, a colony of ants, a wasp’s nest, two squirrels, and millions of bacteria. Together, all of these organisms represent

Answer 3

A community

Question 4

If you eat a hamburger, you’re mainly eating ground up beef muscle. what levels of organization are represented in this ground up muscle?

Answer 4

Organism, population, and community

Question 5

Which of the following statements about ecosystems is false?

Answer 5

Bacteria and fungi recycle energy within an ecosystem

Question 6

The ultimate source of energy flowing into nearly all ecosystems is

Answer 6

Sunlight

Question 7

A consumer eating a producer represents

Answer 7

A transfer of chemical nutrients and energy

Question 8

Which of the following, if any, is not a common cellular activity?

a) cells respond to the environment
b) cells develop and maintain complex organization
c) cells take in and use energy
d) cells regulate their internal environment
e) all of the choices are common cellular activities

Answer 8

All of the choices are common cellular activities

Question 9

The formation of systems typically results in the appearance of novel characteristics called

Answer 9

Emergent properties

Question 10

Your instructor asks you to look into your microscope to see a prokaryotic cell. You will be looking for a cell that

Answer 10

Has a membrane

Question 11

Which of the following is/are properties of life?

a) a complex organization
b) the ability to take in energy and use it
c) the ability to respond to stimuli from the environment
d) the ability to reproduce
e) all of the choices are correct

Answer 11

All of the choices

Question 12

Which of the following statements is correct?

a) Genes are proteins that produce DNA
b) Each organism has its own unique DNA code
c) Differences among organisms reflect different nucleotide sequences in their DNA
d) Each DNA molecule is a single strand of nucleotides

Answer 12

Differences among organisms reflect different nucleotide sequences in their DNA

Question 13

Which of the following is false? Living systems

a) are composed of two or more cells
b) maintain a relatively consistent internal environment
c) respond to changes in the environment
d) encode their genetic information in DNA
e) grow and develop

Answer 13

Are composed of two or more cells

Question 14

Members of the Kingdom Animalia

Answer 14

Are composed of cells that lack a cell wall

Question 15

Organisms that are not prokaryotes are in the domain

Answer 15

Eukarya

Question 16

Which of the following is a kingdom within the Domain Eukarya?

Answer 16

Fungi

Question 17

Organisms belonging to the Kingdom Plantae

Answer 17

are photosynthetic and contain cells that are surrounded by cell walls

Question 18

Members of the Kingdom Fungi

Answer 18

include the mushrooms and yeasts, and decompose the remains of dead organisms and absorb nutrients from the leftovers

Question 19

Which of the following statements is true of Domain Bacteria?

a) All bacteria are “animal-like” in that they eat other organisms
b) all bacteria have a membrane-bound nucleus
c) all bacteria are multicellular organsims
d) all bacteria lack a nucleus
e) all bacteria are “animal-like” in that they eat other organisms and all bacteria have a membrane-bound nucleus

Answer 19

All bacteria lack a nucleus

Question 20

A scientist examining a group of cells under the microscope notices the presence of nuclei within these cells. Chemical tests reveal that each cell is surrounded by a wall composed of cellulose. These cells must come from an organism that is a member of the Kingdom

Answer 20

Plantae

Question 21

Which of the following observations would provide the strongest evidence that the many different plants we call orchids are actually related to one another?

Answer 21

They all have the same common ancestor

Question 22

The teeth of grain-eating animals (such as horses) are usually braod and ridged. This makes them suitable for grinding and chewing. Meat-eating animals (such as lions) have pointed teeth that are good for puncturing and ripping flesh. This illustrates

Answer 22

a result of natural selection and the connection between form and function

Question 23

Which one of the following statements is not consistent with Darwin’s mechanism of natural selection?

a) individuals in a population exhibit variations, some of which are heritable
b) individual organisms exhibit genetic change during their life spans to better fit their environment
c) factors in the environment result in some organisms with better reproductive success than others
d) natural selection is based in part on the overproduction of offspring
e) natural selection can lead to the appearance of new species

Answer 23

Individual organisms exhibit genetic change during their life spans to better fit their environment

Question 24

Evolution by natural selection relies upon

a) heritable variation
b) overproduction of offspring
c) a struggle for existence
d) individual variation
e) all of the choices are correct

Answer 24

All of the choices are correct

Question 25

An antibiotic kills 99.9% of a bacterial population. You would expect the next generation of bacteria

Answer 25

to be more resistant to that antibiotic

Question 26

Which of the following is/are true? a) individuals evolve b) organisms evolve structures because of need c) evolution is deliberate and purposeful d) evolution is a passive process e) all of the choices are true

Answer 26

Evolution is a passive process

Question 27

Consider the following statement; "If all vertebrates have backbones, and turtles are vertebrates, then turtles have backbones." This statement is an example of

Answer 27

deductive reasoning

Question 28

A hypothesis is

Answer 28

a tentative answer to some question

Question 29

If a light switch is moved from the "off" to the "on" position, then the light will go on. This statement a) is the result of deductive reasoning b) is a conclusion c) can be tested d) can be falsified e) all of the choices are correct

Answer 29

all of the choices are correct

Question 30

You notice that over the past month, many students have started wearing a new style of school sweatshirt. You think to yourself, maybe the bookstore recently stated selling this new sweatshirt style. This prediction is

Answer 30

an example of a hypothesis

Question 31

The role of a control in a experiment is to

Answer 31

provide a basis of comparison to the experimental group

Question 32

To be scientifically valid, a hypothesis must be

Answer 32

testable and falsifiable

Question 33

A scientist performs a controlled experiment. This means that

Answer 33

two experiments are conducted, one differing from the other by only a single variable

Question 34

Which of the following best represents an example of technology? a) figuring out what mountain gorillas eat b) sequencing the human genome c) testing for genetic diseases d) comparing the structure of a human and gorilla arm e) identifying the cause of new contagious disease

Answer 34

testing for genetic diseases