BIOLOGY 121 FINAL EXAM WITH
CORRECT ANSWERS 2024
What is the hierarchy of life from largest to smallest? - correct answers-Biosphere-
Ecosystem-Community-Population-Organism-Organ system-Organ-Tissue-Cells-
Organelle-Molecule-Atom
A current example of natural selection is - correct answers-The bacteria that has
become drug resistant
The usual process for the scientific method is: - correct answers-Observation-question-
hypothesis-prediction-experiment-results-conclusion
Starch is a reserve polysaccharide made up of _____ subunits - correct answers-
Gluclose
Monosaccharides are to polysacharides as ______ are to _______ - correct answers-
Amino acids; proteins
All organic molecules contain: - correct answers-Carbon
In polar covalent bonding, electrons are ______ ______ between two atoms - correct
answers-shared unequally
I have an element alpha with an atomic number of 10 and I have another element beta
with the same number of protons but has 3 more neutrons than alpha. What is the
atomic number of beta? - correct answers-10
What organelles are involved in energy conversion? - correct answers-Mitochondrion
and chloroplast
Two molecules contain the exact same elements but are arranged differently what is
this called? - correct answers-Isomer
Why is one side of a water molecule practically negative while the other side is
practically positive? - correct answers-Uneven sharing of electron pairs occurs due to
the strong pull of oxygen.
, Looking at the reaction above what type of reaction forms a triglyceride? - correct
answers-Dehydration synthesis reactions
Which of the following dietary fats is considered to be the healthiest? - correct answers-
Unsaturated cis fat
The structure of cholesterol is similar to the structure of: - correct answers-Sex
hormones
The graph is showing the differences in _____ between a chemical reaction with and
without enzymes - correct answers-Activation energy
Which structure selectively regulates the transport of substances into and out of a
planet cell? - correct answers-The plasma membrane
What is the role of the protein component of chromatin? - correct answers-Something
small and charged, like Mg ion
You have two beakers in front of you labled A and B. One beaker contains Sodium
Chloride and the other contains crystalized triglyceride. You cannot tell them visually
apart. You then take a subsample from beaker A and place it in water. The substance
dissolves. The substance in Beaker B does not dissolve which beaker contains salt? -
correct answers-Beaker A
You just got a job at a blood bank and you are adding a chemical to preserve the blood.
After a few bags you notice the blood changing color and separating. You take a
subsample of a treated sample and look under a microscope. You see that the red
blood cells have either exploded or are shaped like a fat balloon that is going to pop.
The solution that the blood cells are in is probably what? - correct answers-Hypotonic
What is ATP? - correct answers-An energy molecule
What are enzymes? - correct answers-A type of protein that lowers activation energy of
a reaction
In every conversion of energy a portion is lost to environment in what form? - correct
answers-Heat energy
The O2 produced by photosynthesis originates from what reactant? - correct answers-
H2O
CORRECT ANSWERS 2024
What is the hierarchy of life from largest to smallest? - correct answers-Biosphere-
Ecosystem-Community-Population-Organism-Organ system-Organ-Tissue-Cells-
Organelle-Molecule-Atom
A current example of natural selection is - correct answers-The bacteria that has
become drug resistant
The usual process for the scientific method is: - correct answers-Observation-question-
hypothesis-prediction-experiment-results-conclusion
Starch is a reserve polysaccharide made up of _____ subunits - correct answers-
Gluclose
Monosaccharides are to polysacharides as ______ are to _______ - correct answers-
Amino acids; proteins
All organic molecules contain: - correct answers-Carbon
In polar covalent bonding, electrons are ______ ______ between two atoms - correct
answers-shared unequally
I have an element alpha with an atomic number of 10 and I have another element beta
with the same number of protons but has 3 more neutrons than alpha. What is the
atomic number of beta? - correct answers-10
What organelles are involved in energy conversion? - correct answers-Mitochondrion
and chloroplast
Two molecules contain the exact same elements but are arranged differently what is
this called? - correct answers-Isomer
Why is one side of a water molecule practically negative while the other side is
practically positive? - correct answers-Uneven sharing of electron pairs occurs due to
the strong pull of oxygen.
, Looking at the reaction above what type of reaction forms a triglyceride? - correct
answers-Dehydration synthesis reactions
Which of the following dietary fats is considered to be the healthiest? - correct answers-
Unsaturated cis fat
The structure of cholesterol is similar to the structure of: - correct answers-Sex
hormones
The graph is showing the differences in _____ between a chemical reaction with and
without enzymes - correct answers-Activation energy
Which structure selectively regulates the transport of substances into and out of a
planet cell? - correct answers-The plasma membrane
What is the role of the protein component of chromatin? - correct answers-Something
small and charged, like Mg ion
You have two beakers in front of you labled A and B. One beaker contains Sodium
Chloride and the other contains crystalized triglyceride. You cannot tell them visually
apart. You then take a subsample from beaker A and place it in water. The substance
dissolves. The substance in Beaker B does not dissolve which beaker contains salt? -
correct answers-Beaker A
You just got a job at a blood bank and you are adding a chemical to preserve the blood.
After a few bags you notice the blood changing color and separating. You take a
subsample of a treated sample and look under a microscope. You see that the red
blood cells have either exploded or are shaped like a fat balloon that is going to pop.
The solution that the blood cells are in is probably what? - correct answers-Hypotonic
What is ATP? - correct answers-An energy molecule
What are enzymes? - correct answers-A type of protein that lowers activation energy of
a reaction
In every conversion of energy a portion is lost to environment in what form? - correct
answers-Heat energy
The O2 produced by photosynthesis originates from what reactant? - correct answers-
H2O
