Biology Ch. 1

What branch of biology focuses on the study of cells?

Cell biology

Which of the following are the two main scientific approaches that help us understand biology?

Discovery-based science Hypothesis testing

Eukaryotes are found in the domain

Eukarya

True or false: A hypothesis can be proven to be correct through observation and experimentation.

False

Match each word or phrase with the appropriate level of biological organization.

Heart = Organ DNA = Macromolecule School of Fish = Population Plants, animals, and other living organisms in a forest = Community Mosquito = Organism

What determines the function of a biological molecule?

Its structure

Arrange the levels of biological organization according to size, from the smallest (at the top) to the largest (at the bottom).

1. Atom 2. Molecule 3. Macromolecule 4. Cell 5. Tissue 6. Organ

List the levels of organization seen in living organisms, beginning with the smallest level at the top.

1. Organ 2. Organism 3. Population 4. Community 5. Ecosystem 6. Biosphere

What determines the types of species found in a community? Select all that apply.

1. The environment 2. Interactions among different species

What is a tissue?

A group of similar cells that are associated with one another

What type of analysis can be used to determine if significant differences exist between control and experimental groups?

Statistical analysis

What is studied in physiology?

The functions of plants and animals

How do scientists determine whether the results of an experiment differ between an experimental group and a control group?

They analyze the data with statistics.

True or false: Diverse forms of life have evolved to prosper in the different environments the Earth has to offer.

True

When should a hypothesis be rejected?

When the data from the control and experimental groups are NOT statistically different from one another.

The study of the structures of plants and animals is

anatomy

In taxonomy, species are grouped together if they have a recent common ___

ancestor or ancestry

If the results of an experiment are statistically significant, it means that the differences observed between the experimental group and the control group

are NOT likely to be due to chance

The ___ includes all the regions on the surface of the Earth and in the atmosphere where living organisms exist.

biosphere

What is the smallest unit of life?

cell

The level of biological organization studied by cell biologists is the ___.

cell, cells, cellular, cellular level, or cell level

Researchers typically follow two general types of approaches while conducting biological investigations: ___-based science and ___ testing.

discovery, hypothesis

Science involves which of the following? Check all that apply.

experimental investigation observation theoretical explanation

If a hypothesis is supported by observation and experimentation, a researcher should

fail to reject the hypothesis.

One of the principles exhibited by all forms of life is that structure determines ______, which applies to small molecules, macromolecules, and multicellular tissues and features.

function

Scientific discoveries can result from which of the following? Select all that apply.

gathering new information the scientific method

Discovery-based science is a useful approach because the data collected in discovery science may lead to the formation of new ______ that can be tested.

hypotheses

Atoms combine to form

molecules

Select the steps that are part of the scientific method.

observation experimentation data analysis formulation of a hypothesis

A hypothesis must make ______ that can be tested, and a hypothesis must be ______, which means it can be shown to be incorrect.

predictions; falsifiable

If the results of an experiment show a statistically significant difference between two groups, a hypothesis that predicts that the two groups will have similar results should be

rejected

Select all the characteristics of a scientific hypothesis.

should be falsifiable (if incorrect) must make predictions

The diversity of life forms that exist on Earth is due to

the large variety of environments found on Earth.

The biosphere is:

the places on Earth and in the atmosphere where living organisms exist

What is biology?

the study of life

Categorization of species is based on

their relationship to common ancestors.

An organ is composed of two or more types of

tissues