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WorksheetsAP BIO UNIT 1 REVIEW
Total questions: 35
Worksheet time: 35mins
Water is polar because ___________
the protons are evenly distributed among the two sides of the poles
the electrons are shared equally
the electrons are pulled stronger towards the hydrogens
the electrons are pulled stronger towards the oxygen
Why does ice float on water?
The molecules (in ice) are farther apart
The molecules (in ice) are closer together
The molecules (in water) are closer together
The molecule (in water) are farther apart
Which of the following is the reason for water's versatility as a solvent?
It forms covalent bonds with hydrophobic substances
It forms hydrogen bonds with hydrophilic and ionic substances
It forms hydrogen bonds with only hydrophilic substances
It forms covalent bonds with hydrophilic and ionic substances
How does water travel a tree's leaves from the roots?
Because of the adhesive and cohesive abilities
Because of the adhesive abilities
Because of the cohesive abilities
Water evaporates into water vapor and rises to the leaves of the tree
Which of the following represent the proper way water's properties are useful in world?
Some spiders are able to walk on water because of their low weight and their hydrophobic hairs on their legs.
Trees are able to receive water from the roots to the leaves because water is a universal solvent. Which allows the small particles to easily dissolve and move up the tree.
Many substances are dissolved in the cytoplasm (liquid portion) of a cell. Due to lipids being polar like water, they are able to move freely through the cytoplasm.
This graph shows the temperature change of water and sand overtime. Which answers best represents why the water has a lower temperature?
Water has many sea animals that are hydrophilic so they absorb the temperature of the water.
Sand has a low specific heat.
Water has a high specific heat.
Water has a low specific heat
If something is acidic there are
more OH-
less H+
less OH-
more H+
What do buffers do?
They donate more OH- when a substance is basic
They donate more OH- when a substance is acidic
They donate more H+ when a substance is basic
They donate more H+ when a substance is acidic
(a) from around solutes to dissolve them by preventing substances to join together
Why does water's molecular structure have a V-shape?
Because the bonds are constantly breaking and joining
Because the molecule's charge is unequally distributed
Because hydrogen is more electronegative than oxygen
Because the 2 hydrogen atoms are heavy so they pull downwards leaving the oxygen upwards
Carbon has the ability to form up to (a) bond(s).
Which of the following are not a major element
They are all major elements
Nitrogen
Carbon
Phosphorus
Sulfur
What are tetrahedrals?
Four water molecules bonded w/ hydrogen bonds
Four water molecules covalently bonded back to back
Polypeptide chains consisting of 4 monomers
Molecules with multiple carbons bonded to four atoms
Which of the following would occur if nitrogen and phosphorus were limited?
The long term storage of energy would decrease
The replication of genetic information would decrease
Transport of molecules into and out of the cell would increase
Production of a waxy cuticle would decrease
Which is not an important chemical group?
Phosphate Group
Methyl
Hydroxyl
Carbonyl
Ethylene
Isomers are compounds that have the ______________________
same # of atoms of the same element
different # of atoms of the same element
only some atoms different of the same element
Isomers have _______
different structures and different properties
same structures but different properties
same structures and same properties
different structures but same properties
Structural isomers have ______
are mirror images of each other
same covalent arrangements but different spatial arrangements
different covalent arrangements
Which of the following is not part of the 4 large biological molecules
Carbohydrates
Amino acids
Lipids
Nucleic Acids
All of the above are the large biological molecules
True or False: Monomers are made up of Polymers
TRUE
FALSE
What is a dehydration reaction?
the breaking of a bond by losing water
the creation of a bond by adding water
the creation of a bond by losing water
the breaking of a bond by adding water
(a) speed up reactions
How is a disaccharide formed?
2 monosaccharides are joined by a glycosidic linkage
4 monosaccharides are split by a dehydration reaction to form a disacchride
2 carboxyl groups with a sugar backbone join together to form a disaccharide
Which of the following is an example of a structural polysaccharide?
Starch
Cell membrane
Chitin
Cell wall
If an animal was unable to obtain glycerol what function would they lack?
DNA Duplication
Energy Storage
Meiosis
Cellular Respiration
When does denaturation occur?
When a protein loses its shape and ability to function
When a dehydration reaction of an amino acid occurs
When a polymer is broken down into a short polymer and an unlinked monomer.
When the fatty acid and the Glycerol are split apart due to a hydrolysis reaction
Which of the following are functions of polysaccharides?
communication between cells
energy storage
structural support
None of the above
Glucose, fructose, and galactose are all example of (a)
If a person has the Sickle Cell disease what occured?
The person's chaperonins lost their function causing the protein to not fold properly
hydrolysis prematurely occurred causing a polymer to break where it shouldn't have
denaturation occurred
A substitution in the amino acid sequence
Which of the following does not cause a protein to unravel?
Environmental factors
Temperature
Alteration to pH levels
Salt concentration
All of the above cause a protein to unravel
What is DNA made up of?
(a)
What is RNA made up of?
(a)
Which way does anitparallel run?
3` -> 5`
5` -> 3`
3` -> 3`
5` -> 5`
Which of the following does not belong to DNA?
Thymine
Uracil
Adenine
Guanine
______ are polymers made of monomers called ___________
Nucleic acids, pyrimidines
Nucleic acids, nucleotides
nucleotides, nucleic acids
Pyrimidines, Nucleic Acids
