Biology Ch 1 Test Review

Intro to Biology Holt-McDougal Biology

Q1

• List the characteristics of life that all living things share.

A1

• List the characteristics of life that all living things share.

• -made of cells• Need energy (metabolism) • Homeostasis• Adaptation• Respond to Environment • Grow & reproduce

Q 2

•What is a hypothesis?

A 2

• What is a hypothesis? • educated guess or testable explanation of an

observation

Q3

• List the steps of the Scientific Method or Scientific Investigation in order.

A3

• List the steps of the Scientific Method or Scientific Investigation in order.

• -Observations• -Questions• -Hypothesis• -Controlled Experiment• -Analysis of results• -Conclusions

Q4 • Which variable does the experimenter

change in an experiment?

A4

• Which variable does the experimenter change in an experiment?

• -independent variable

Q5

• Which variable is measured in an experiment?

A5

• Which variable is measured in an experiment?

• DEPENDENT VARIABLE

Q6

• Describe the difference between a hypothesis & a scientific theory.

A6

• Describe the difference between a hypothesis & a scientific theory.

• - Hypothesis – possible explanation or educated guess.

• Theory- broad explanation based on repeated testing of hypotheses.

Q 7

• How many variables should be isolated & tested during an experiment?

A7

• How many variables should be isolated & tested during an experiment?

• One variable (independent)

Q8

• What is the basic unit of length in the metric system?

A8

• What is the basic unit of length in the metric system?

• Meter

Q9

• What is the basic unit of mass in the metric system?

A9

• What is the basic unit of mass in the metric system?

• -gram

Q10

• Be able to convert between units in the metric system.

• - How many meters are in 1.6 km?

A10

• Be able to convert between units in the metric system.

• - How many meters are in 1.6 km? • 1.6 km = 1600 meters

Q11

• Define the term “Biology”.

A11

• Biology = The scientific study of life.

Q12

• What is the term for the area where all life exists?

A12

• What is the term for the area where all life exists?

• - Biosphere

Q13

• What components make up an ecosystem?

• What components make up an ecosystem? • the living organisms (biotic) & nonliving things

(abiotic) in a particular area.

Q14

• Define “community” and give an example.

A14

• Define “community” and give an example. • - all the groups of DIFFERENT SPECIES of

organisms in an area. • Ex- all the different plants & animals in a

forest.

Q15

• Define “Population” and give an example.

A15

• Define “Population” and give an example. • - all the SINGLE SPECIES in an area at one

time. • Example- all the maple trees in a forest.

Q16

• What term describes any individual living thing made of one or more cells?

A16

• What term describes any individual living thing made of one or more cells?

• - Organism

Q17

• Define the term “homeostasis”.

A17

• Define the term “homeostasis”• -Maintaining constant internal conditions.

Q18

• True or False: “only individuals that belong to the same species are able to reproduce by interbreeding”.

A 18

• True or False: “only individuals that belong to the same species are able to reproduce by interbreeding”.

• -TRUE

Q19

• Organisms use energy for chemical processes. Together these processes are called _______

• A) negative feedback • B) metabolism • C) Adaptation • D) Homeostasis • E) ecosystem

A19

• Organisms use energy for chemical processes. Together these processes are called ________B) metabolism

Q20

• What is a “pathogen”?

A20

• What is a “pathogen”? • Disease-causing agent

Q21

• Tell the difference between Quantitative vs. Qualitative data.

a21

• Tell the difference between Quantitative vs. Qualitative data.

• Quantitative involves numbers• Qualitative involves descriptions from

observations.

Q22

• In an experiment, what group recieves no experimental treatment?

A22

• In an experiment, what group recieves no experimental treatment?

• THE CONTROL GROUP

Q23

• In an experiment, what group has one variable changed?

• A) Experimental group • B) Control group • C) Factorial group • D) Hypothesis

A23

• In an experiment, what group has one variable changed?

• A- EXPERIMENTAL GROUP

Case study

• CASE STUDY: A scientist is testing the effects of a new conditioner on how well it removes tangles from hair. Group A is given the new conditioner, group B is not given any conditioner. The hair is combed to measure how well tangles are removed.

Q 24

• 24) Which group is the control group?

A24

• 24) Which group is the control group? • - Group B (no conditioner)

Q25

• Which group is the experimental group?

A25

• Which group is the experimental group? • Group A (new conditioner)

A26

• What is the dependent variable?

A 26

• What is the dependent variable? • - how well tangles are removed.

Q27

• What is the independent variable?

A27

• Independent variable= conditioner

Q28

• What would some constants in this experiment?

A28

• What would some constants in this experiment?

• - Same type of hair, same length of hair, same amount of water used.