Question 1

In the mid-nineteenth century Charles Darwin and Alfred Russel Wallace observed many organisms.Based on these observations they arrived to an explanation on how populations change through time.They termed it:

Accepted Answer

A)  evolution. 
B)  natural selection. 
C)  creationism. 
D)  natural evolution. 
E)  genetics.

Question 2

You are at a stage in your research in which you must design an experiment to test your hypothesis.What factors must you include to insure that your experimental data is good valid data?

Accepted Answer

The answer of You are at a stage in your...

Question 3

A group of organisms in which the individuals are so closely related in structure, biochemistry, and behavior that they can successfully interbreed is a(n) ____.

Accepted Answer

A)  kingdom 
B)  class 
C)  order 
D)  species 
E)  genus

Question 4

DNA is

Accepted Answer

A)  composed of protein and lipid subunits. 
B)  organized into functional units called genes. 
C)  organized into functional units called chromosomes. 
D)  organized into functional units called ribosomes. 
E)  organized from information contained in proteins.

Question 5

The observations you make and experimental data you collect in your biology laboratory class are examples of:

Accepted Answer

A)  statistical analysis. 
B)  hypothesis building. 
C)  biological dogma. 
D)  model systems. 
E)  biological research.

Question 6

The process by which parents produce offspring is called:

Accepted Answer

A)  reproduction. 
B)  homeostasis. 
C)  compensation. 
D)  feeding. 
E)  artificial selection.

Question 7

Biological evolution according to Darwin and Wallace states that

Accepted Answer

A)  organisms produce numerous offspring, but environmental factors limit the number of reproducing survivors. 
B)  heritable variations allow some individuals to outcompete others. 
C)  the offspring of successful individuals inherit the favorable characteristics of their parents. 
D)  a and b 
E)  a, b, and c

Question 8

A group of similar species that share the most recent common ancestry is a(n) ____.

Accepted Answer

A)  kingdom 
B)  class 
C)  order 
D)  genus 
E)  species

Question 9

The sequential stages through which individuals develop, grow, maintain themselves, and reproduce are known as the ____.

Accepted Answer

A)  life cycle 
B)  transformation 
C)  catabolic reactions 
D)  anabolic reactions 
E)  central dogma

Question 10

The most fundamental and important molecule that distinguishes living systems from nonliving matter is ____.

Accepted Answer

A)  DNA 
B)  deoxyribonucleic acid 
C)  glucose 
D)  fructose 
E)  a and b only

Question 11

As long as a cell has access to a usable energy source, has the necessary raw materials, and is in appropriate environmental conditions, the cell will:

Accepted Answer

A)  survive and reproduce. 
B)  stay in stasis. 
C)  not be in homeostasis. 
D)  remain dormant. 
E)  no longer be emergent.

Question 12

Although Darwin and Wallace understood the central importance of heritability among organisms to the process of evolution, they could not explain how new variations arose or how they were passed to the next generation.

Accepted Answer

A) True 
 B)False

Question 13

Why have scientists developed classification systems?

Accepted Answer

A)  To arrange living and dead organisms into groups reflecting their relationships and evolutionary origins. 
B)  To make sense of the past and present diversity of life on Earth. 
C)  To help scientists distinguish two different groups of organisms with the same common name. 
D)  To arrange living and dead organisms into groups that reflect their relationships and evolutionary origins and to make sense of the past and present diversity of life on Earth. 
E)  To arrange living and dead organisms into groups that reflect their relationships and evolutionary origins, to make sense of the past and present diversity of life on Earth, and to help scientists distinguish two different groups of organisms with the same common name.

Question 14

Populations of all organisms change from one generation to the next because their DNA changes over time.This is known as:

Accepted Answer

A)  artificial selection. 
B)  biological evolution. 
C)  natural selection. 
D)  artificial selection and natural selection only 
E)  developmental selection.

Question 15

How you keep body temperature from dropping below its optimal level and how Anolis lizards regulate body temperatures is different in some ways but not others.Explain.

Accepted Answer

The answer of How you keep body temperature from dropping...

Question 16

What are the contributions of Beadle, Tatum, Watson, and Crick to biology? What techniques did they use to revolutionize biological science?

Accepted Answer

The answer of What are the contributions of Beadle, Tatum,...

Question 17

All the populations of different organisms that live in the same place form a(n) ____.

Accepted Answer

A)  ecosystem 
B)  community 
C)  biosphere 
D)  organ 
E)  population

Question 18

A researcher in a lab finds a microscopic organism that has no nucleus, but has distinctive structural molecules and mechanisms of photosynthesis.The organisms are abundant in virtually every habitat on Earth.The researcher has identified an organism belonging to the domain ____.

Accepted Answer

A)  Bacteria 
B)  "Protist" 
C)  Eukarya 
D)  Animalia 
E)  Amoeba

Question 19

You are studying an ecosystem in your campus; after a solid base of carefully observed and described facts, your next step would be to:

Accepted Answer

A)  make more observations. 
B)  share your data with others. 
C)  design an experiment. 
D)  wait for instructions. 
E)  make a hypothesis.

Question 20

While running on a treadmill, your heart rate will increase and your breathing will be deeper and more rapid.Among other things, this helps ensure that your muscles get adequate supplies of O2 as you exercise.These changes are the result of _____.

Accepted Answer

A)  compensatory mechanisms 
B)  developmental mechanisms 
C)  emergent properties 
D)  homeostatic mechanisms 
E)  multicellularity

Exam 1: Introduction to Biological Concepts and Research