K101 practice test for Exam 1, Chapters 1-6 and a bit of 7;
Written by and Posted by Dr. Marrs
Please read each question carefully and consider ALL the choices before answering. The actual exam will be
40 multiple choice questions in a format similar to this exam (with many figures,
with questions that
have choices of ‘a and b’, ‘all of the above’), so this should be excellent practice for you.
Keep re-taking the
exam if you are not satisfied with your score (A = 90% and up,
B = 80% and up, C = 70% and up, D = 60%
and up F = 59% or below ).
The ACTUAL exam WILL! be a bit harder than this exam
if you get an A or a B on this practice test, you are on the way to being well-prepared!
The acceptance of scientific discoveries, hypotheses, or theories is based on
The present system of biological classification contains three Domains of life.
Which of the
belong to any of the three Domains?
What do the four elements most abundant in life-carbon, oxygen, hydrogen, and nitrogen-have in
They all have the same number of valence electrons
Each element exists in only one isotopic form
They are equal in electronegativity
They are elements produced only by living cells
They all have unpaired electrons in their valence shells.
A Sodium (Na) ion has 10 electrons, 11 protons, and 12 neutrons.
Its atomic mass and atomic
number, respectively, are
23 and 33
23 and 11
33 and 23
11 and 23
33 and 11.
How many electrons does nitrogen have in its valence shell, and how many electrons does
phosphorous have in its valence shell?