Exam 1: The Nature of Science and the Characteristics of Life

Biologists hypothesize that the now-extinct American cheetah provided the selection pressure that led to the swiftness of the pronghorn.Which of the following statements is the most likely prediction of how pronghorn speed might change in the next few thousand years?

The term autotroph can be interchanged with the term producer; both terms refer to organisms that obtain energy from the nonliving part of their environment.

The brain is considered an organ because it is constructed from nerve cells.

Biology is the scientific study of ________.

Some bacteria can sense direction using magnetic particles in their cells.

A medical diagnosis is a(n)

All living organisms sense their environment and respond to it.

Homeostasis is the ability to detect and correct disturbances that develop within an organism.Which of the following things is NOT regulated by homeostasis?

The scientific method cannot be used to evaluate untestable hypotheses.Which of the following types of questions are untestable?

Using a process called photosynthesis,plants make energy-rich substances by using the energy contained in ________.

Consider each of the following true statements; which statement supports the theory that all living organisms descended from one common ancestor?

Living organisms are intimately connected to the environments in which they live; this connection is called a biome,and a forest is a good example.

Advantageous genetic features that evolve over time and help an organism survive or reproduce are called ________.

Which of the following groups of organisms is NOT included in the domain Eukarya?

An organ is defined as a body structure composed of two or more

After it has been supported by a predictable experimental outcome,a scientific hypothesis

Organisms that are classified as consumers capture their energy directly from the sun.

Although the idea seems contradictory,science cannot prove a hypothesis to be true.Why?

Developing a scientific understanding of a natural phenomenon typically begins by

In the following list,the best evidence for evolution is