Exam 1: An Introduction to Life on Earth

Adaptations aid in the survival and reproduction of an organism in a particular environment. True or False?

All of the following are scientific principles that underlie scientific inquiry EXCEPT:

Photosynthetic bacteria are examples of autotrophs. True or False?

The collective group of all individuals of similar, interbreeding organisms that exist in the world is defined as a(n)________.

To test the effect of vitamin D on growth, two groups of rats were raised under identical conditions and fed the same diet. One of the groups received daily injections of vitamin D. The other group received injections of saline, which did not contain vitamin D. All the rats were weighed weekly for 2 months. In this experiment, the control was the:

Chromosomes are made of:

A scientific theory:

Imagine that in 2020 you are the top biologist at a research station studying biodiversity in Costa Rica. A young scientist brings you a sample from a previously unexplored site. She asks you to look at the sample and determine whether it indeed contains microscopic, living organisms. As you begin your investigations, you must first decide what characteristics distinguish life from nonlife. How would you differentiate a living organism from nonliving matter (including viruses and prions)?

A carefully formulated scientific explanation that is based on extensive observations and is in accord with scientific principles is called a:

The main difference between an autotroph and a heterotroph is:

Using its antennae, the male moth finds female moths by following a trail of airborne chemicals, called pheromones, upwind from the female producing them. This is an example of how living things:

Photosynthetic plants are considered "self-feeders," or ________, and animals that cannot photosynthesize are "other feeders," or ________.

Errors or changes in the DNA "blueprint" of an organism are called ________.

All scientific study begins with observations and the formation of testable ________.

Which of the following is NOT a part of the community shown in this figure?

Natural laws are the same regardless of when or where one is. True or False?

You observe a plant on your windowsill that is growing at an angle toward the outside. This is an example of a living thing:

The "first cells" shown at the bottom of this illustration most likely refer to:

The energy that sustains nearly all life ultimately comes from sunlight. True or False?

A cell that lacks organelles is a(n):