A scientist believes that she has found a new life form. Which of the
following conditions is NOT considered essential in determining
whether the putative new life form exhibits/shows the properties of
life?
Question 1 options:
It appears to have cells when viewed under a microscope
The creature seems to react to being touched.
The creature possesses purposeful anatomical structures that differ
from one another.
The creature's body is bilaterally symmetrical.
Which of the following lists correctly presents levels of organization
from simplest to most complex?
Question 2 options:
biosphere, atoms, communities, organisms
molecules, cells, populations, ecosystems
organelles, cells, ecosystems, populations, biosphere
organs, organ systems, organelles, organisms
Which of the following statements must be *FALSE*?
Question 3 options:
Species X and Y belong to different classes, but the same kingdom
Species X and Y belong to the same class, but different kingdoms
Species X and Y belong to the same kingdom, but different families
Species X and Y belong to the same kingdom, but different orders
Species X and Y belong to different orders, but the same domain
What is the difference between prokaryotes and eukaryotes?
Question 4 options:
Prokaryotic cells have a nucleus; eukaryotic cells do not.
Prokaryotes belong to either the plant or the animal kingdom;
eukaryotes belong to the bacteria kingdom.
Eukaryotic cells have a nucleus; prokaryotic cells do not.
Eurkarytoes belong to either the plant or the animal kingdom;
prokarytoes belong to the fungi kingdom.
An "educated guess" as to what causes an observed phenomenon is
known as a ___.
Question 5 options:
theory
hypothesis
control
conclusion
A scientist observes that when she opens the back door of her
house to let her cat out, the songs of a certain species of bird
abruptly change. She wants to follow up on her observations with an
informal experiment. Which of the following is the best hypothesis
for explaining the birds' song changes? Question 6 options:
The bird species switches from song to warning call whenever it
sees a potential predator.
The bird species has a variety of songs that it sings, regardless of
what is happening in its environment.
Why does the bird song change when I let the cat out?
The birds stop singing because they are afraid of the cat.
A scientist wants to determine whether a new chemical she isolated
can cure a certain disease. To test her hypothesis that the new
chemical cures the disease more effectively than current
treatments, she infects mice with the disease and gives them the
new chemical. She then assesses how many mice were cured of the
disease. What is missing from her experimental design?
Question 7 options:
She is missing a control group of mice that did not receive the new
chemical.
There are no variables in the experiment
She is not missing anything—her experimental design is adequate to
test her hypothesis.
She is missing an experimental group of mice that received a half
dose of the new chemical.
What is the main purpose of conducting experiments?
Question 8 options:
proving a theory correct
proving a hypothesis correct
making initial observations
disproving a hypothesis
Order the steps of the scientific method from the first step (1) to the
last ().
Question 9 options:
12345Analyze Data
12345State Hypothesis
12345Conduct Experiment
12345Report Results
12345Make Observation
Students are designing an experiment to see if changes in pH have
an impact on the action of enzymes. Which is the best hypothesis?
Question 10 options:
Will acidic pH reduce enzyme action?
The pH and the temperature of the solution will have an effect on
the reaction.
A change in pH will change enzyme activity.
A pH of 10 will result in less enzyme activity compared to pH 7. You have formulated a hypothesis: "Blueberries contain more
vitamin C than raspberries." To test your hypothesis you measure
vitamin C levels in 20 blueberries and 20 raspberries from bushes
that were grown in the same area under the same environmental
conditions (temperature, rain, sunlight). What is the dependent
variable in this experiment?
Question 11 options:
The type of soil, temperature, amount of rain and sunlight in the
area
Vitamin C levels
Blueberries
Raspberries
What is the atomic number of an element with 8 protons, 9 neutrons
and 8 electrons?
Question 12 options:
9
15
8
25
Which type of chemical bond hold water molecules together with
other water molecules?
Question 13 options:
polar covalent bonds
ionic bonds
hydrogen bonds
non-polar covalent bonds
Which of the following statements is true?
Question 14 options:
When frozen, ice is less dense than liquid
When frozen, ice is more dense than liquid
Water and ice has the same density
Ice is heavier than water and will sink
What type of chemical bond is responsible for the 3 dimensional
structure of nucleic acids and proteins?
Question 15 options:
covalent bonds
ionic bonds
hydrogen bonds
non-polar covalent bonds
____ are atoms that have gained or lost electrons.
Question 16 options:
Elements
Molecules
Ions Isotopes
Beryllium has an atomic number of 4 and an atomic mass of
approximately 9. How many protons does a beryllium atom have?
Question 17 options:
5
4
9
13
SKIP
Which of the following statements about this atom are TRUE? Select
all that apply.
Question 18 options:
This atom has a full outer shell
This atom has 8 electrons total
This atom has 6 electrons in the outer shell
This electron has 4 electrons in the inner shell
A substance with a pH less than 7 is ___________, while a substance
with a pH greater that 7 is ___________.
Question 19 options:
basic, acidic
neutral, acidic
basic, neutral
acidic, basic
neutral, basic
An atom has 15 protons and 15 neutrons. Which of the following is
an isotope to this atom?
Question 20 options:
An atom with 15 protons and 15 electrons
An atom with 17 protons and 15 neutrons
An atom with 15 protons and 17 neutrons
An atom with 17 protons and 17 neutrons

 

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