MGRADES UPDATED EXAMS
biology 1001 LSU exam 1 Adam H
UPDATED Exam Questions and
CORRECT Answers
CHAPTER 1: To test the effect of vitamin D on growth, two groups of rats were raised under
identical conditions and fed the same diet. One of the groups received daily injections of vitamin
D. The other group received injections of saline, which did not contain vitamin D. All the rats
were weighed weekly for 2 months. In this experiment, the control was the? - CORRECT
ANSWER - group receiving saline
CHAPTER 1: Photosynthetic bacteria are examples of autotrophs. True or False? - CORRECT
ANSWER - true
CHAPTER 1: The variation among individuals, on which natural selection acts, is? - CORRECT
ANSWER - genetic differences/ mutations
CHAPTER 1: Why do heterotrophs require "food" for survival? - CORRECT ANSWER -
food provides the organic chemicals needed
when a generalization is used to make predictions - CORRECT ANSWER - deductive
reasoning
CHAPTER 1: Science cannot answer certain moral questions because? - CORRECT
ANSWER - moral values differ among individuals
CHAPTER 1: Imagine that 1 milliliter of an experimental drug diluted in a saline solution is
injected into 20 pregnant mice to determine possible side effects. Which of the following is a
suitable control for this experiment? - CORRECT ANSWER - 20 pregnant mice injected
with 1 milliliter of saline
CHAPTER 1: The experiments of Francesco Redi did what? - CORRECT ANSWER -
disprove the idea of spontaneous generation
,MGRADES UPDATED EXAMS
CHAPTER 1: All of the following are scientific principles that underlie scientific inquiry
EXCEPT? - CORRECT ANSWER - natural selection
generalizations based on many observations that support it and none that contradict it -
CORRECT ANSWER - inductive reasoning
CHAPTER 2: Isotopes are atoms of the same element that have different numbers of protons.
True or
False? - CORRECT ANSWER - false
CHAPTER 2: A single covalent chemical bond represents the sharing of how many electrons? -
CORRECT ANSWER -2
CHAPTER 2: If you place a paper towel in a dish of water, the water will? - CORRECT
ANSWER - move up the towel as the water adheres to the paper towel while the cohesive
water molecules stay bound to each other.
Who invented binomial nomenclature? - CORRECT ANSWER - Linnaeus
What are the three subatomic particles and their charges? - CORRECT ANSWER -
proton- positive
neutron- neutral
electron- negative
CHAPTER 2: If a substance measures evenly (7) on the pH scale, that substance has an equal
concentration of? - CORRECT ANSWER - H+ and OH- ions
CHAPTER 2: Which of the following could potentially be a free radical? - CORRECT
ANSWER - oxygen (atomic number 8)
,MGRADES UPDATED EXAMS
CHAPTER 2: What happens when hydrochloric acid (HCl) is added to pure water? - CORRECT
ANSWER - create H+ and Cl- ions.
CHAPTER 2: Carbon-14 is often used for carbon dating, where scientists measure the rate of
carbon-14 decay to determine the age of items. Carbon-14 contains six protons and eight
neutrons. During the process of carbon-14 decay, one of its eight neutrons becomes a proton and
an electron is emitted. Which of the following is the BEST explanation of what has occurred? -
CORRECT ANSWER - The resulting atom is now a different element because the number
of protons has changed.
CHAPTER 2: As ice melts, it? - CORRECT ANSWER - absorbs heat from its
surroundings
CHAPTER 2: How do buffers work? - CORRECT ANSWER - They accept or release
OH- .
CHAPTER 2: Unlike a rock, a reptile can sit in the hot sunshine without its body temperature
soaring quickly. This is because the water in its body...? - CORRECT ANSWER - has a
high specific heat
CHAPTER 3: Where is glycogen stored in vertebrate animals? - CORRECT ANSWER -
liver and muscles
CHAPTER 3: Large biological molecules are synthesized by removing? - CORRECT
ANSWER - water
CHAPTER 3: What 2 things are TRUE about waxes? - CORRECT ANSWER - they are
saturated fats
solid at normal outdoor temperatures
CHAPTER 3: The fiber in your diet is actually? - CORRECT ANSWER - cellulose
, MGRADES UPDATED EXAMS
Glycogen is a polysaccharide formed by joining what together? - CORRECT ANSWER -
excess monosaccharides of glucose
CHAPTER 3: In dehydration synthesis, the atoms that make up a water molecule are derived
from? - CORRECT ANSWER - both of the reactants
CHAPTER 3: The group of biological molecules that are most diverse in function is? -
CORRECT ANSWER - proteins
CHAPTER 3: Your friend is trying to learn how to kill bacteria. She reads that preservatives
such as citric acid are added to foods because the acidic environment kills bacteria by denaturing
their proteins. She thinks this sounds like a lot of scientific jargon and asks you what it means.
How can you explain it in simpler terms? - CORRECT ANSWER - the proteins of the
bacteria lose their structure and can't function from the citric acid, so the bacteria die
CHAPTER 3: Which of these is NOT a nucleic acid or nucleotide? DNA, RNA, LDL -
CORRECT ANSWER - LDL
What does the cytoplasm of eukaryotic cells not contain? - CORRECT ANSWER -
chromosomes
disorganized version of chromosomes that appears in the nuclues - CORRECT
ANSWER - chromatin
organelle that binds messenger RNA and transfer RNA to synthesize polypeptides and proteins -
CORRECT ANSWER - ribosomes
CHAPTER 4: Which of the following is the smallest? eukaryotes, prokaryotes, virus,
mitochondrian - CORRECT ANSWER - virus
biology 1001 LSU exam 1 Adam H
UPDATED Exam Questions and
CORRECT Answers
CHAPTER 1: To test the effect of vitamin D on growth, two groups of rats were raised under
identical conditions and fed the same diet. One of the groups received daily injections of vitamin
D. The other group received injections of saline, which did not contain vitamin D. All the rats
were weighed weekly for 2 months. In this experiment, the control was the? - CORRECT
ANSWER - group receiving saline
CHAPTER 1: Photosynthetic bacteria are examples of autotrophs. True or False? - CORRECT
ANSWER - true
CHAPTER 1: The variation among individuals, on which natural selection acts, is? - CORRECT
ANSWER - genetic differences/ mutations
CHAPTER 1: Why do heterotrophs require "food" for survival? - CORRECT ANSWER -
food provides the organic chemicals needed
when a generalization is used to make predictions - CORRECT ANSWER - deductive
reasoning
CHAPTER 1: Science cannot answer certain moral questions because? - CORRECT
ANSWER - moral values differ among individuals
CHAPTER 1: Imagine that 1 milliliter of an experimental drug diluted in a saline solution is
injected into 20 pregnant mice to determine possible side effects. Which of the following is a
suitable control for this experiment? - CORRECT ANSWER - 20 pregnant mice injected
with 1 milliliter of saline
CHAPTER 1: The experiments of Francesco Redi did what? - CORRECT ANSWER -
disprove the idea of spontaneous generation
,MGRADES UPDATED EXAMS
CHAPTER 1: All of the following are scientific principles that underlie scientific inquiry
EXCEPT? - CORRECT ANSWER - natural selection
generalizations based on many observations that support it and none that contradict it -
CORRECT ANSWER - inductive reasoning
CHAPTER 2: Isotopes are atoms of the same element that have different numbers of protons.
True or
False? - CORRECT ANSWER - false
CHAPTER 2: A single covalent chemical bond represents the sharing of how many electrons? -
CORRECT ANSWER -2
CHAPTER 2: If you place a paper towel in a dish of water, the water will? - CORRECT
ANSWER - move up the towel as the water adheres to the paper towel while the cohesive
water molecules stay bound to each other.
Who invented binomial nomenclature? - CORRECT ANSWER - Linnaeus
What are the three subatomic particles and their charges? - CORRECT ANSWER -
proton- positive
neutron- neutral
electron- negative
CHAPTER 2: If a substance measures evenly (7) on the pH scale, that substance has an equal
concentration of? - CORRECT ANSWER - H+ and OH- ions
CHAPTER 2: Which of the following could potentially be a free radical? - CORRECT
ANSWER - oxygen (atomic number 8)
,MGRADES UPDATED EXAMS
CHAPTER 2: What happens when hydrochloric acid (HCl) is added to pure water? - CORRECT
ANSWER - create H+ and Cl- ions.
CHAPTER 2: Carbon-14 is often used for carbon dating, where scientists measure the rate of
carbon-14 decay to determine the age of items. Carbon-14 contains six protons and eight
neutrons. During the process of carbon-14 decay, one of its eight neutrons becomes a proton and
an electron is emitted. Which of the following is the BEST explanation of what has occurred? -
CORRECT ANSWER - The resulting atom is now a different element because the number
of protons has changed.
CHAPTER 2: As ice melts, it? - CORRECT ANSWER - absorbs heat from its
surroundings
CHAPTER 2: How do buffers work? - CORRECT ANSWER - They accept or release
OH- .
CHAPTER 2: Unlike a rock, a reptile can sit in the hot sunshine without its body temperature
soaring quickly. This is because the water in its body...? - CORRECT ANSWER - has a
high specific heat
CHAPTER 3: Where is glycogen stored in vertebrate animals? - CORRECT ANSWER -
liver and muscles
CHAPTER 3: Large biological molecules are synthesized by removing? - CORRECT
ANSWER - water
CHAPTER 3: What 2 things are TRUE about waxes? - CORRECT ANSWER - they are
saturated fats
solid at normal outdoor temperatures
CHAPTER 3: The fiber in your diet is actually? - CORRECT ANSWER - cellulose
, MGRADES UPDATED EXAMS
Glycogen is a polysaccharide formed by joining what together? - CORRECT ANSWER -
excess monosaccharides of glucose
CHAPTER 3: In dehydration synthesis, the atoms that make up a water molecule are derived
from? - CORRECT ANSWER - both of the reactants
CHAPTER 3: The group of biological molecules that are most diverse in function is? -
CORRECT ANSWER - proteins
CHAPTER 3: Your friend is trying to learn how to kill bacteria. She reads that preservatives
such as citric acid are added to foods because the acidic environment kills bacteria by denaturing
their proteins. She thinks this sounds like a lot of scientific jargon and asks you what it means.
How can you explain it in simpler terms? - CORRECT ANSWER - the proteins of the
bacteria lose their structure and can't function from the citric acid, so the bacteria die
CHAPTER 3: Which of these is NOT a nucleic acid or nucleotide? DNA, RNA, LDL -
CORRECT ANSWER - LDL
What does the cytoplasm of eukaryotic cells not contain? - CORRECT ANSWER -
chromosomes
disorganized version of chromosomes that appears in the nuclues - CORRECT
ANSWER - chromatin
organelle that binds messenger RNA and transfer RNA to synthesize polypeptides and proteins -
CORRECT ANSWER - ribosomes
CHAPTER 4: Which of the following is the smallest? eukaryotes, prokaryotes, virus,
mitochondrian - CORRECT ANSWER - virus
