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WorksheetsNucleic Acids & Proteins
Total questions: 48
Worksheet time: 16mins
The building blocks of nucleic acids are (a) .
The bases found in DNA and RNA are basic because _______.
Heterocyclic aromatic amines
Heterocyclic aromatic amides
Homocyclic aromatic amines
Homocyclic aromatic amides
Adenine and guanine are (a) .
Cytosine, thymine, and uracil are (a) .
The sugar component of RNA is _______
α-ribose
β-ribose
D-ribose
L-ribose
The sugar component in DNA is ______.
5-deoxy-D-robose
5-deoxy-D-ribose
2-deoxy-L-ribose
2-deoxy-D-ribose
The combination of sugar and bases is known as _________.
Nucleosides
Nucleotides
Nucleosomes
Nucleolus
Analysis of the base composition of DNA molecules from many different species was done by _________.
Erwin Chergaff
Erwin Chargaff
Erwin Chargaffe
Erwin Chargaf
Established the 3-D structure of DNA
James Watson & Erwin Chargaff
Erwin Chargaff and Francis Crick
James Watson and Francis Crick
James Watsons and Gregor Mendel
The DNA molecules in the nuclei are not stretched out, but rather coiled around basic protein molecules called (a) .
In a nucleosomes, (a) histone molecules form a core.
The acidic DNA and the basic histones attract each other by ________ forces.
electromagnetic
electrical
electrostatic
electron
Nucleosomes are further condensed into (a)
30-nm wide fiber forms in which nucleosomes are wound in a _______ fashion.
selonoid
silenoid
seilonoid
solenoid
A type of RNA that is produced in the process called transcription.
tRNA
siRNA
rRNA
A type of RNA that transports amino acids to site of protein synthesis.
(a)
A type of RNA that affects gene expression and is used by scientists to knockout a gene being studied.
(a)
An RNA that directs amino acids sequence of proteins.
(a)
An RNA that is found in the nucleus of eukaryotic cells.
(a)
An RNA that affects gene expression and important in growth and development.
(a)
An RNA that combines with proteins to form ribosomes.
(a)
Nucleic acids that are exist as polymers.
(a)
A nucleotide is composed of three parts:
a five-carbon sugar
nitrogenous base
a three-carbon sugar
phosphate groups
Proteins came from the Greek word (a) .
A type of protein that accelerates chemical reaction.
Transport proteins
Storage proteins
Enzymatic/catalysis proteins
Defensive proteins
Hemoglobin, a protein in the blood, carries oxygen from the lungs to the cells in which it is used and carbon dioxide from the cells to the lungs. What type of transport protein is applicable in the sentence?
Transport proteins
Storage proteins
Enzymatic/catalysis proteins
Defensive proteins
The chief constituents of skin, nails, bones, and hair.
Enzymatic/catalysis proteins
Defensive proteins
Structural proteins
Receptor proteins
Muscle expansion and contraction are involved in every movement we make.
Protection
Hormones
Storage
Movement
Ferritin, a protein in the liver, stores iron.
Regulation
Structure
Storage
Catalysis
Some proteins not only control the gene expression of genes but also dictate when such manufacture take place.
Regulation
Hormones
Transport
Structural
When a protein from an outside source or some other foreign substance entergs the body, the body makes its own proteins to counterpart the foreign protein.
Hormones
Protection
Movement
Transport
A type of protein that functions as coordinator of an organism's activities.
Hormones
Protection
Structural
Movement
A protein that is insoluble in water and is usedainly for structural purposes.
(a)
These proteins are more or less soluble in water and are used mainly for nonstructural purposes.
(a)
Amino acid is an organic compound containing _______ groupand ______ group.
amino & carbonyl
amide & carbonyl
amino & carboxyl
amide & carboxyl
Zwitterzions came from the Greek word "zwitter", meaning (a) .
Amino acids are zwitterzions, not only in water solution but also in _______ state.
golden
plasma
solid
gas
_______ and _______ are precursors to norepinephrine & epinephrine.
Tyrosine & phenylalanine
Valine & glutamine
Leucine & arginine
The (a) structure of proteins consist of the sequence of amino acids that makes up a chain.
An inherited disorder to that affects the shape of red blood cells.
(a)
Proteins can fold or align themselves in such a manner that certain patters repeat themselves. These repeating patterns are referred to as (a) structure.
In the _______ form, single protein chain twists in such a manner that its shape resembles a right handed coiled spring.
α-helix
β-pleated sheet
γ-rays
N-terminus
A structure of proteins that can occur between molecules when polypeptide chains run parallel or antiparallel.
α-helix
β-pleated sheet
γ-rays
N-terminus
The orderly arrangement of protein chains is maintained by ___________ or ________ hydrogen bonds
Intermolecular & exothermic
Intramolecular & endothermic
Intramolecular & intermolecular
Exothermic & endothermic
The (a) structure of proteins is the 3-D arrangement of every atom in the molecule.
________ are also called electrostatic attraction.
sugar bridges
glucose bridges
London bridge
Salt bridges
The spatial relationship and interactions between subunits in a protein that has more than polypeptide chain.
(a)
(a) involves the breaking of many of the weak linkages, or bonds.
