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Exam 1
Review Questions for Bio Exam 1
60
Biology
Undergraduate 1
09/12/2012

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Term
What organisms are considered producers?
Definition
Plants and other photosynthetic organisms
Term
What is a cell?
Definition
The lowest level of structure that can perform all the activities required for life.
Term
What 3 domains do scientists group all living things?
Definition
Bacteria, Archaea, Eukarya
Term
What is evolution?
Definition
The unity and diversity of life.
Term
A hypothesis must have what two characteristics?
Definition
Testable and falsifiable.
Term
What are organic molecules?
Definition
Carbon-based molecules
Term
Which reaction makes polymers?
Definition
Dehydration
Term
How are polymers broken down?
Definition
Hydrolysis
Term
What are the simplest carbohydrates?
Definition
Monosaccharides
Term
What is the most important monosaccharide for our cells?
Definition
Glucose
Term
What is sucrose?
Definition
Common table sugar (glucose + fructose)
Term
What polysaccharide is used for storage in plants?
Definition
Starch
Term
What is the most abundant molecule on Earth? Also a structural polysaccharide.
Definition
Cellulose
Term
What structural polysaccharide is used in insect exoskeletons?
Definition
Chitin
Term
What is the main function of fats?
Definition
Energy storage
Term
What lipids are solid at room temperature?
Definition
Saturated Fats
Term
What type of lipids important for cellular membranes?
Definition
Phospholipids
Term
What lipids have a ring structure and can serve as hormones?
Definition
Steroids
Term
What lipids can be hazardous to ones health?
Definition
Anabolic Steroids
Term
What are proteins made of?
Definition
Amino Acids
Term
What is a proteins primary shape?
Definition
Amino acid sequence
Term
What is a proteins secondary structure?
Definition
Folding pattern
Term
What is a proteins tertiary
Definition
3D Shape
Term
What are nucleic acids made of?
Definition
Nucleotides
Term
Where is the genetic material of the cell located?
Definition
Nucleus
Term
What organelle makes proteins?
Definition
Ribosomes
Term
What organelle is important for lipid synthesis and calcium storage?
Definition
Smooth ER
Term
What organelle finishes, sorts, and ships cell products?
Definition
Golgi Apparatus
Term
What organelles carry out cellular respiration?
Definition
Mitochondria
Term
What are membranes a fluid mosaic of?
Definition
Phospholipids and proteint
Term
What is not required for passive transport?
Definition
Energy (ATP)
Term
What is active transport?
Definition
The only way to move solutes against their concentration gradient.
Term
What is cellular drinking?
Definition
Pinocytosis
Term
What is cellular eating?
Definition
Phagocytosis
Term
What is energy defined to do?
Definition
Work
Term
What is kinetic energy?
Definition
Energy of motion
Term
What is potential energy?
Definition
Stored energy
Term
What is the type of potential energy found with the bonds of molecules?
Definition
Chemical energy
Term
What is the first law of Thermodynamics?
Definition
Energy can neither be created nor destroyed.
Term
What type of reaction releases energy?
Definition
Exergonic Reaction
Term
What type of reaction requires an input of energy?
Definition
Endergonic Reaction
Term
What catalyzes cellular respiration?
Definition
Enzyme
Term
What does an enzymes substrate bind to?
Definition
Active site
Term
What type of inhibitor binds to the active site of an enzyme?
Definition
Competitive Inhibitor
Term
What is the first step of cellular respiration?
Definition
Glycolysis
Term
Where does the citric acid cycle (Krebbs cycle) take place?
Definition
Mitochondrion
Term
The majority of ATP is made during what stage of cellular respiration?
Definition
Oxidative Phosphorylation
Term
If there is no oxygen available, what happens to pyruvate after glycolysis?
Definition
Fermentation
Term
What do NAD+ and FADH carry to the oxidative phosphorylation step?
Definition
Electrons
Term
What are a pair of duplicated chromosomes called?
Definition
Sister Chromatids
Term
What is the longest phase of the cell cycle?
Definition
Interphase
Term
During metaphase, what do the chromosomes line up along?
Definition
Metaphase plate
Term
What is cytokineses?
Definition
The stage when the actual cell splitting occurs.
Term
What is the first checkpoint in the cell cycle control system?
Definition
G1 Checkpoint
Term
What is the name of the process in prophase 1 of meiosis where pieces of homologous chromosomes trade places?
Definition
Crossing over
Term
What is the difference between Prophase 2 and Mitosis?
Definition
Prophase 2 starts with haploid cells?
Term
Genetic diversity is increased due to crossing over and what two processes?
Definition
Independent Orientation of Chromosomes and Random Fertilization
Term
What are alleles?
Definition
Different versions of a gene
Term
What is a karyotype?
Definition
A photographic inventory of an individuals chromosomes.
Term
What is the chromosomal abnormality in down syndrome?
Definition
Trisomy 21
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