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A leaf is composed of several tissues organized to work together and is a(n) ______ of a plant.
Multiple choice question.
organ
organism
organ system
organelle
organ
Rank the following levels of biological organization from smallest at the top to largest at the bottom.
Atom
Molecule
organelle
cell
tissue
organ
What is a group of joined atoms, such as deoxyribonucleic acid (DNA)?
Multiple choice question.
biosphere
ecosystem
organ
molecule
molecule
What term refers to members of the same species living in the same place at the same time?
Multiple choice question.
population
biosphere
ecosystem
organism
Population
What is the term for all the populations of different species that occupy the same location at the same time?
Multiple choice question.
organisms
organ system
community
organelles
community
What biological level includes the living and nonliving components of a particular area?
Multiple choice question.
Organ system
Population
Community
Ecosystem
ecosystem
Organisms that make their own food by obtaining energy and nutrients from nonliving sources are called:
Multiple choice question.
herbivores.
heterotrophs.
primary producers.
primary consumers.
Primary producers
Using a process called Blank______, living organisms maintain a state of internal constancy or equilibrium, such as a constant range of temperatures, nutrients, or water.
Multiple choice question.
decomposition
replication
homeostasis
evolution
Homeostasis
In Blank______ reproduction, the offspring are mostly genetically identical (except for some mutations); in Blank______ reproduction, most of the offspring are genetically different (except for twins).
Multiple choice question.
indirect; direct
sexual; asexual
asexual; sexual
direct; indirect
asexual; sexual
Organs are made up of ______.
Multiple choice question.
tissues
ecosystems
organ systems
organisms
tissues
Select all of the following that are characteristics of a scientific theory.
Multiple select question.
a tentative hunch or guess
encompass multiple hypotheses
can be used to make predictions
falsifiable
supported by a large body of evidence
narrow in scope
encompass multiple hypotheses
can be used to make predictions
falsifiable
supported by a large body of evidence
A leaf is composed of several tissues organized to work together and is a(n) ______ of a plant.
Multiple choice question.
organ
organ system
organelle
organism
organ
Organisms seem so well-suited to their environments because they have inherited characteristics or behaviors, called ______, that enable them to successfully survive and reproduce.
Multiple choice question.
organs
adaptations
homeostasis
pedigrees
adaptations
Natural _________ is a mechanism of evolution in which certain individuals from a population exhibit enhanced reproductive success based on inherited characteristics.
selection
A change in the genetic makeup of a population over multiple generations can also be referred to as
Multiple choice question.
homeostasis.
adjustment.
evolution.
reproduction.
evolution
What is the science of naming and classifying organisms?
Multiple choice question.
Natural selection
Taxonomy
Evolution
The scientific method
Taxonomy
What is the basic unit of classification and is denoted by a unique two-part scientific name?
Multiple choice question.
species
family
class
phylum
species
When examining evolutionary relationships, taxonomists strive to classify organisms according to
Multiple choice question.
size of the organisms.
where they live on Earth.
shared common ancestors.
shape of the organisms.
shared common ancestors
All living organisms are organized into one of ______ domains.
Multiple choice question.
two
six
four
three
3
Rank the following steps of the generalized scientific method in order from the first step at the top to the last step at the bottom.
1. Observe and ask questions about something in the natural world
2. Create a hypothesis to explain your observations and make prediction
3. Carry out experiment(s) to test the hypothesis and collect data
4. Analyze your data and draw conclusions
In the scientific method, what is a hypothesis?
Multiple choice question.
method of data collection
a well-tested collection of ideas that explain a natural phenomenon
a tentative explanation for an observation
an investigation carried out in a controlled environment
a tentative explanation for an observation
In the scientific method, a(n) ______ is an investigation carried out under controlled conditions to test a hypothesis.
Multiple choice question.
theory
observation
experiment
peer review
experiment
In general, what is true regarding sample size in scientific experiments?
Multiple choice question.
The smaller the sample size, the more credible the results.
The larger the sample size, the less credible the results.
The larger the sample size, the more credible the results.
The smaller the sample size, the more applicable the results.
The larger the sample size, the more credible the results.
The image shows the data from a study in which a vaccine or placebo was given to individuals, and the incidence of illness was measured. The incidence of illness observed is the ______.
Multiple choice question.
standardized variable
independent variable
dependent variable
control group
dependent variable
In an experiment, the response that an investigator measures and the treatment that an investigator manipulates are examples of
Multiple choice question.
sample sizes.
variables.
placebos.
hypotheses.
variables
The group in an experiment that is untreated and provides a basis for comparison is called the ______
Multiple choice question.
dependent group.
control.
hypothesis.
variable.
control
Match each of the following characteristics with either theory or hypothesis.
Theory <--->
hypothesis <---->
a comprehensive, well-accepted explanation of a natural phenomenon
a tentative, narrow-in-scope explanation of a natural phenomenon
Select all the questions that are difficult to answer using science.
Multiple select question.
questions about the natural world
questions about morality
questions about the meaning of life
questions about cells
questions about morality
questions about the meaning of life
Advances in ______, such as DNA sequencers and radio-tracking devices, have enhanced biological discovery.
Multiple choice question.
statistical tests
theories
hypotheses
technology
technology
A(n) ______ is an explanation for a natural phenomenon that has been well tested and ties together many hypotheses.
Multiple choice question.
peer review
experiment
scientific method
theory
theory
What term describes a comprehensive explanation for a natural phenomenon?
Multiple choice question.
Hunch
Experiment
Placebo
Theory
theory
The following lists the levels of biological organization in order from smallest to largest. Fill in the missing components: Atom, molecule, organelle, ______ , tissue, _______ , organ system.
cell
organ
What is a group of joined atoms, such as deoxyribonucleic acid (DNA)?
Multiple choice question.
molecule
organ
biosphere
ecosystem
molecules
______ are groups of specialized cells that function together.
Multiple choice question.
Tissues
Ecosystems
Molecules
Organelles
tissues
Compartments within cells that carry out specific functions are called
Multiple choice question.
organ systems.
organelles.
organs.
molecules.
organelles
A(n) ______ is a living individual that consists of one or more cells.
Multiple choice question.
organism
organelle
atom
organ
organism
What is the basic unit of life and consists of a membrane enclosing water, DNA, and other chemicals?
Multiple choice question.
Ribosome
Plastid
Cell
Organ
cell
The cell's genetic instructions are encoded in a molecule called ______, and these instructions are used to produce proteins and allow the cell to carry out specialized functions.
Multiple choice question.
deoxyribonucleic acid (DNA)
glucose 3-phosphate (G3P)
carbon dioxide (CO2)
adenosine triphosphate (ATP)
deoxyribonucleic acid (DNA)
Particles that make up molecules are called
Multiple choice question.
organisms.
atoms.
cells.
membranes.
atoms
Consider a species of frog that lives in many ponds throughout central California. A group of the frogs in one of the ponds, NOT including the other species of organisms living there, is an example of a(n)
Multiple choice question.
organelle.
ecosystem.
community.
population.
population
What describes a community?
Multiple choice question.
All the populations of different species that live in an area
The living and nonliving components of an area
The abiotic factors of an area, such as light, soil, and nutrients
All the members of the same species that live in an area
All the populations of different species that live in an area
An area of forest, including the organisms that occupy it and the nonliving components of its area, is an example of a(n)
Multiple choice question.
ecosystem.
habitat.
community.
population.
ecosystem
What are membrane-bounded compartments within eukaryotic cells that carry out specialized functions?
Multiple choice question.
Domains
Organelles
Hypotheses
Biospheres
organelles
