Life Science

Chapter 1: Exploring and Classifying Life

Exploring and Classifying Life

1.
When a scientist classifies a newly discovered plant, its __________ is studied.
A)biogenesis
B)transpiration
C)variable
D)phylogeny
2.
When a bright light shines in your eyes, you close your eyelids quickly. What is the bright light?
A)a control
B)a classification
C)a stimulus
D)a predictor
3.
Which scientist's work led to the theory of biogenesis?
A)Edward Jenner
B)Louis Pasteur
C)Gregor Mendel
D)Carolus Linnaeus
4.
You want to find out how much water an aquarium tank can hold. Which SI measurement unit would you use?
A)grams
B)tonnes
C)liters
D)meters
5.
When you touch a hot pan on the stove with your hand, you quickly move your hand away. How do you describe your hand's movement?
A)It is a dichotomous key.
B)It is a reaction.
C)It is an SI measurement.
D)It is part of scientific methods.
6.
You want to weigh a large dog. Which SI measurement unit would you use?
A)millimeters
B)kilograms
C)liters
D)kilometers
7.
What is the process in which new organisms replace those that die?
A)homeostasis
B)photosynthesis
C)reproduction
D)phylogeny
8.
The part of an experiment that can change is __________.
A)a theory
B)a law
C)a zygote
D)a variable
9.
Which of these is true of scientific methods?
A)It is not important to form a hypothesis.
B)Conclusions are drawn at the beginning of the process.
C)The problem needs to be stated at the beginning of the process.
D)Data can be analyzed in only one way.
10.
Which person developed a system of organism classification in use today?
A)Oparin
B)Einstein
C)Linnaeus
D)Marconi
11.
Which person devised an animal classification system 2,000 years ago?
A)Aristotle
B)LaMarck
C)Urey
D)Pasteur
12.
Which of these is true?
A)A valid theory answers all questions.
B)Good theories are defined before observations are made.
C)A theory can explain multiple hypotheses.
D)Once they are stated, theories never change.
13.
Which of these is a tool used to identify organisms?
A)a stimulus
B)a hypothesis
C)a control
D)a dichotomous key
14.
The theory that supposes that living things came from nonliving things is __________.
A)phylogeny
B)biogenesis
C)spontaneous generation
D)mitosis
15.
Which of these scientists studies animals?
A)a botanist
B)a physicist
C)a zoologist
D)a geologist
16.
In order to draw conclusions about a scientific problem, which is true?
A)A scientist never revises the hypothesis.
B)A scientist will choose whether or not to form a hypothesis.
C)A scientist will always reject the hypothesis.
D)A scientist can accept the hypothesis.
17.
How do many-celled organisms grow?
A)The cells use energy from the Sun.
B)Only one of its cells gets bigger.
C)Bacteria invade the cells.
D)They make more cells.
18.
Which category is the largest in the organism classification system?
A)a genus
B)a hierarchy
C)a species
D)a kingdom
19.
What is the length of time an organism is expected to live?
A)a scientific method
B)stimulus
C)a life span
D)homeostasis
20.
__________ is a trait of all organisms.
A)Homeostasis
B)A hypothesis
C)A variable
D)Binomial nomenclature