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WorksheetsBiochemistry quiz1
Total questions: 20
Worksheet time: 10mins
Nonpolar R groups in amino acids can not form hydrogen bonds with water and are pushed into the _______ of a protein.
middle
outside touching water
Bond with water
disappear
What Elements are found in DNA
CHO
CHON
CHONP
CHONPS
What happens during cohesion?
Oxygen of on atom is attracted to hydrogen of another atom so water becomes attracted to itself
no attaction
water is attracted to other things
hydrogen atoms of one atom are attracted to hydrogen atoms of another atom so water is attracted to itself
Peptides bonds are formed between the
NH2 and COOH
C and C
CH3 and H20
C=0 and C
If a macromolecule has sulfur and nitrogen in it, it is classified as a ____________
carbohydrate
protein
lipid
nucleic acid
Which element is found in organic compounds?
oxygen
carbon
nitrogen
sulfur
All of waters properites are derived form its _________ bonds
hydrogen
carbon
nonpolar
oxygen
High heat of vaporization helps produce a cooling mechanism that helps remove excess heat through phase change form liquid to __________________
solid
liquid
gas
plasma
Water moves up plants. Water and the xylem are both polar. Water has the ability to make ______ bonds with itelf and inside walls of the xylem and move up the vascular tissue of a plant.
hydrogen
carbon
oxygen
nonpolar
UV radiation can damage the weak bonds the hold DNA double helix together. It breaks the ___________ bonds between the nitrogenous bases.
carbon
oxygen
nitrogen
hydrogen
Genetic code is carried by
carbohydrates
proteins
lipids
nucleic acid
Guanine Cytosine (G C) bonds in DNA denature at higher temperatures because they have 3 hydrogen bonds and thereform have more hydrogen bonds between them than adenine and ____________
thymine
guanine
adenine
uracil
Secondary structure of a protein includes ____ and beta pleated sheets.
bonds
amino acid chains
alpha helix
globular proteins
What sugar is found in DNA? hint its name comes from this sugar
ribose
deoxyribose
glucose
sucrose
What sugar is found in RNA?
deoxyribose
gluscose
cellulose
ribose
RNA differs from DNA because of a different identity of nitrogen base called_________
uracil
adenine
thymine
guanine
Is there thymine in RNA?
yes
no
sometimes
cant be determined
In proteins the bond between C-N is formed through dehydration synthesis. What 2 things are formed through this process?
peptide bonds, H2O
glycosidic bonds, carbons
ester bonds, H2O
phosphodiester bonds, H2O
Peptide bonds form between C-N during dehydration synthesis. Also water is formed. What kind of bonds are peptide bonds?
covalent
Ionic
hydrogen
double
When you make proteins or carbohydrates you remove water through dehydration synthesis so __ is made a byproduct.
water
oil
triglycerides
nucleotides
