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WorksheetsBiology Exam 1
Total questions: 25
Worksheet time: 14mins
A friend of yours calls to say that his car would not start this morning. He asks for your help. You say that you think the battery must be dead. If so, then jump-starting the car from a good battery will solve the problem. In doing so, you are _____.
making observations to inspire a theory for why the car will not start
testing a theory for why the car will not start
stating a hypothesis and using that hypothesis to make a testable prediction
comparing multiple hypotheses for why the car will not start
A plant is able to produce glucose using energy from the sun.
Energy processing
Response to stimuli
Growth and development
Homeostasis
Which of the following is true of a scientific theory?
It must demonstrate the effect of one variable by testing control groups and experimental groups.
It is only accepted after the person who formulated it has died.
It generates testable hypotheses, is supported by a large body of evidence, and is broad in scope.
It is a method or device that applies scientific knowledge for some specific purpose.
How did Darwin’s ideas on evolution conflict with contemporary religious ideas?
Darwin argued that the universe arose from a “Big Bang."
Darwin argued that the earth was very old, and that species are constantly changing.
Darwin argued that humans have no soul.
Darwin argued that life on earth was created by a meteor strike.
The control group in an experiment contains every feature of the experimental group except it is not given the treatment that the researcher hypothesizes will have an effect.
false
true
Which domain includes multicellular photosynthetic organisms?
Fungi
Bacteria
Archaea
Eukarya
the smallest unit of matter is ATOM
true
false
i don't know
Which of the following list of elements make up 96% of the human body?
C, H, O, N
Na, Cl, Ca, K
C, H, O, S
C, H, O, P
The reaction below is for cellular respiration. Which compounds are the products?
C6H12O6 + 6O2 --> 6H2O + 6CO2
C6H12O6 + 6O2
6O2 + 6H2O
6H2O + 6CO2
C6H12O6 + 6CO2
Isotopes differ from one another because of the number of (a) they have.
In a water molecule, hydrogen atoms are bonded to an oxygen atom by a _________ bond.
hydrogen
ionic
polar covalent bond
nonpolar covalent bond
Hydrophobic substances such as vegetable oil are
nonpolar substances that repel water molecules.
polar substances that repel water molecules.
nonpolar substances that have an attraction for water molecules.
polar substances that have an affinity for water.
Covalent bonds occur when atoms
give up or take in valence electrons
share all their electrons
share their valence electrons
give up or take in all their electrons
Water is the least dense when it
is at room temperature
is frozen
is just above freezing
is just below boiling
Which of the following describes a type of hydrolysis reaction?
the reaction of a fatty acid with glycerol, forming a triglyceride and releasing water
the reaction of a polypeptide forming several amino acids and consuming water
the reaction of a cytosine nucleotide base and a guanine nucleotide base forming a DNA base pair
the reaction of two monosaccharides, forming a disaccharide with the release of water
A molecule with the chemical formula C7H14O7 is probably
gylcerol
hyrocarbon
lipid
monosaccharide
Which of the following are examples of lipids. Select all that apply.
cholesterol
phospholipid
protein and
glucose
wax
triglyceride
How many electrons does carbon need to share to complete its outer valence electron shell?
1
8
3
4
Which of the following statements regarding lipids is true?
They are insoluble in water.
A gram of lipid stores less energy than a gram of carbohydrate.
They are made from glycerol and amino acids.
They generally contain nitrogen.
What type of bond is formed between two sugars in a disaccharide?
phosphodiester
Glycosidic linkage
hydrogen
peptide
Which of the following would be an example of a function of a protein? Select all that apply.
transport materials in the blood
speed up reactions in cells & antibodies produced by immune system
carries genetic information
source of energy
signal molecules like insulin
A nucleotide is composed of nucleotide is composed of
a nitrogenous base, a phosphate group, a pentose sugar, and an amino acid.
a nitrogenous base and a phosphate group.
a nitrogenous base, a phosphate group, and a pentose sugar.
a nitrogenous base and a pentose sugar.
Which of the following is a difference between DNA and RNA?
DNA forms A - T and G - C base pairs, while RNA forms A - U and G - C base pairs.
DNA's structure is single-stranded and RNA's structure is a double helix.
DNA is a nucleic acid and RNA is a protein.
DNA has many functions in the cell, like gene expression, while RNA only functions as the genetic material.
There are 20 different amino acids. What makes one amino acid different from another?
different side chains (R groups) attached to the carboxyl carbon
different side chains (R groups) attached to the amino groups
different side chains (R groups) attached to the central carbon
Which two functional groups are always found in amino acids?
ketone and amino
hydroxyl and carboxyl
carbonyl and amino
carboxylic acid and amino
