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WorksheetsBiology Quarter 3 Practice
Total questions: 25
Worksheet time: 25mins
DNA is able to control cellular activities most directly by regulating the process of
Meiotic cell division
Protein synthesis
active transport
selective breeding
Which series is arranged in decreasing size of structures?
Nucleus, chromosome, DNA, nucleotide, nitrogenous base
DNA, nucleus, chromosome, nucleotide, nitrogenous base
Nucleotide, chromosomes, nitrogenous base, nucleus, DNA
Chromosome, nucleus, nitrogenous base, nucleotide, DNA
Which amino acid is coded by the mRNA codon UUU?
Ser
Phe
Leu
Tyr
Which mRNA codon codes for the amino acid Serine?
UCU
UGG
UAA
UGA
Electrophoresis is a method of
Indicating the presence of starch
Separating colored compounds on a strip of paper
Changing the genetic code of an organism
Separating DNA fragments
Structure X is a
mitochondria
vacuole
nucleus
ribosome
mRNA received its information from what molecule?
ribosome
tRNA
nucleus
DNA
The diagram below represents a technique used in some molecular biology laboratories. What type of technique does this represent?
gel electrophoresis
direct harvesting
genetic engineering
chromatography
A normal human egg cell contains
44 body chromosomes and two XX chromosomes
22 body chromosomes and one Y chromosome
22 body chromosomes and one X chromosome
44 body chromosomes and one X and one Y chromosome
The DNA in the diagram shown is most similar in which two children?
Child A
Child B
Child C
Child D
Child A
Child C
Child B
Child D
After the complete breakdown of this molecule, the structure labeled 3 in the diagram would be identified as
Deoxyribose
ribose
Glucose
phosphate
The diagram represents a (1) deletion (2) synapsis (3) karyotype (4) disjunction.
deletion
synapsis
karyotype
disjunction
The chromosomes are arranged to show (1) independent assortment (2) tetrads (3) nucleotides (4) homologous pairs.
independent assortment
tetrads
nucleotides
homologous pairs
The individual from whom these chromosomes were taken is a
Male
Female
polyploidy
hermaphrodite
A rare tropical plant was found to have medicinal properties. A search was conducted to find other plants that are closely related to the rare plant. Which characteristics would best identify the plant most closely related to the original one?
shape of seeds, number of flower petals, leaf pigments
number of flower petals, positive reaction to a specific enzyme
leaf pigments, sequence of DNA bases, positive reaction to a specific enzyme
presence of DNA bases, internal stem structure, shape of seeds
Which two features are LEAST useful in determining which organisms are most closely related?
presence of hair and similar proteins
presence of feathers and similar body structures
habitat and diet
body size and color
ATG TGA CAG
What is chromatography used for?
A way to see pretty colors
A laboratory technique used to separate mixtures based on density.
A form of distillation
a laboratory techniue used to create banding patterns based on DNA fragment size
This procedure is used to
detect glucose in a solution
determine the rate of photosynthesis
separate molecules in a mixture
examine gene sequences
The band labeled as "X" is the piece of DNA that
is the largest,
moved the slowest
is the largest,
moved the fastest
is the smallest,
moved the slowest
is the smallest.
moved the fastest
DNA is best described as:
single helix
deoxyribose sugar
ATCG nitrogen bases
single helix
ribose sugar
AUCG nitrogen bases
double helix
deoxyribose sugar
ATCG nitrogen bases
double helix
ribose sugar
AUCG nitrogen bases
RNA is best described as:
single helix
deoxyribose sugar
ATCG nitrogen bases
single helix
ribose sugar
AUCG nitrogen bases
double helix
deoxyribose sugar
ATCG nitrogen bases
double helix
ribose sugar
AUCG nitrogen bases
Looking at the diagram, SELECT THE TWO statements that best supports the statement:
"Two of these children are related."
the fragments are the same size
the fragments are different sizes
the number of bands are the same
the number of bands are different
Offspring inherit traits from their parents. These traits are determined by
Genes located on chromosomes
found in the nucleus
Chromosomes located on genes
found in the ribosomes
Genes located on chromosomes
found in the ribosomes
Chromosomes located on genes
found in the nucleus
