Bio 1100 Exam 1 Review Questions and Correct Answers
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Course
ECU BIO 1100
Institution
ECU BIO 1100
Organisms on earth are composed of molecules and compounds that are constructed primarily of what four elements? carbon, hydrogen, oxygen, nitrogen
A potential new organism has been discovered. Which of the following would be the most conclusive in confirming it is a life form? detection of cells
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Bio 1100 Exam 1 Review Questions and
Correct Answers
Organisms on earth are composed of molecules and compounds that are constructed
primarily of what four elements? ✅carbon, hydrogen, oxygen, nitrogen
A potential new organism has been discovered. Which of the following would be the
most conclusive in confirming it is a life form? ✅detection of cells
Which of the following intracellular junctions would allow for signal molecules to be
passed between adjacent animal cells that need fast communication like heart and
nerve cells? ✅gap junctions
Endosymbiosis is the best explanation for ✅appearance of mitochondria and
chloroplasts in eukaryotes
Food enters your mouth and reaches your small intestine. What chemical process uses
water to break down polymers into smaller more bioavailable chemical subunits?
✅hydrolysis
Eye wash stations are found in many biology labs in case any irritable substance comes
into contact with the eyes. What property of water allows for the irrigation and removal
of an irritable substance? ✅good solvent
Which of the following is a correct statement concerning the difference between
saturated and unsaturated fats? ✅saturated fats are composed of fatty acids with
single covalent bonds between the carbon atoms, whereas unsaturated fats have one
or more double bonds
A nucleotide is to a nucleic acid as: ✅an amino acid is to protein
One area of organism classification depends upon whether cells are prokaryotic or
eukaryotic. The primary difference between these groups is: ✅the presence of
membrane bound organelles
How many potential hydrogen bonds can one molecule of ethanol form? ✅2
What type of transport is involved in increasing the acidity of you stomach? ✅active
transport
What level of protein construction involves the linking together of multiple three
dimensional protein molecules? ✅quaternary
, Production of cholesterol (a steroid molecule) is one important function of the liver.
Where in the liver this occurring? ✅smooth ER
E. coli is a common bacteria that lives inside intestines and often ends up on fresh
produce such as spinach. You remember from biology that it ✅is in the domain
prokarya, has no nucleus, no membrane bound organelles, but has an extra loop of
DNA
Which of the following cellular structures are found in both plant and animal cells?
✅mitochondria, cell membrane, ribosomes
What does NuSI stand for? ✅Nutritional Science Initiative
Which of these food components would pass through the human digestive tract with the
least amount of digestion? ✅cellulose
Which of the following molecules is involved in receptor mediated endocytosis? ✅LDL
Which of the following classification of lipids is involved in hormonal regulation?
✅sterols
In a double blind study a number of people were given Echinacea to study its effects on
the common cold. Another group of people were given a placebo. The placebo group is
known as: ✅the control group
What type of bond is formed between two hydrogen atoms to create hydrogen gas?
✅non-polar covalent
What cellular structures/adaptations do sperm most utilize to ensure they reach the
drifting egg? ✅flagella, mitochondria
The "rough" in rough ER refers to the affinity that this structure has for what cellular
structures? ✅ribosomes
A mutation occurs in the genes of a bacterial cell, preventing it from forming pili. What
function will this cell be unable to perform? ✅attachment to a surface/organism
In order for some cells to maintain concentrations of ions that differ from the
surrounding environment, cells will use energy to pump ions across the membrane
against their concentration gradients. This type of membrane transport is known as:
✅active transport
What type of bond must be present for a hydrogen bond to form? ✅polar covalent
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