WorksheetsQuarter Final 3 REVIEW
Total questions: 31
Worksheet time: 16mins
The lac operon in E. coli
prevents lactose-utilizing enzymes from being expressed when lactose is present in the environment
prevents lactose-utilizing enzymes from being expressed when lactose is absent from the environment
prevents lactose intolerance
promotes the expression of lactose-utilizing enzymes when lactose is absent from the environment
The lac operon of E coli is _____________ when the repressor is bound to _____________.
active; lactose
inactive; lactose
Recessive X-linked traits are more likely to be expressed in a male fruit fly than a female fruit fly because
the male chromosome is more susceptible to mutations.
the male's phenotype resuts entirely from his his single X-linked gene.
the male chromosome is more fragile than the female chromosome
The presence of AB blood type illustrates the principle of
polygenic inheritance
incomplete dominance
codominance
pleiotropy
A carrier of a genetic disorder who does not show symptoms is most likely to be ___________ to transmit it to offspring.
homozygous for the trait and able
homozygous for the trait and unable
heterozygous for the trait and able
heterozygous for the trait and unable
How many sex chromosomes are in a human GAMETE?
1
2
3
4
Facilitated diffusion across a cell membrane requires ________________ and moves a substance __________ its concentration gradient.
energy and transport proteins; against
transport proteins; down
energy and transport proteins; down
transport proteins; against
ATP
contains five phosphate groups.
is essential for a cell to perform all the tasks necessary for life
is found only in bacteria.
All of the above
The process whereby plants capture energy and make complex molecules is known as
homeostasis
evolution
photosynthesis
development
When an enzyme catalyzes a reaction
it raises the activation energy of the reaction
it lowers the activation energy of the reaction
it is used once and discarded
it acts as a reactant
The four most common elements in living organisms are
C, H, O, Fe
C, H, O, Na.
C, H, O, N.
An uncharged atom of boron has an atomic number of 5 and an atomic mass of 11. How many electrons does boron have?
11
15
5
2
The cell spends MOST of its time in
interphase
prophase
mitosis
idontknowsis
What is the probability that the offspring of a homozygous dominant individual and a homozygous recessive individual will exhibit the dominant phenotype?
25%
50%
60%
100%
The monomers of DNA and RNA are
fatty acids
nucleic acids
monosaccharides
nucleotides
Which of the following enzymes catalyzes the elongation of a new DNA strand?
RNA polymerase
DNA polymerase
reverse transcriptase
Which of the following options BEST depicts the flow of information when a gene directs the synthesis of a cellular component?
DNA-tRNA-mRNA-protein
RNA-DNA-RNA-protein
DNA-RNA-protein
Any change in the nucleotide sequence of DNA is called
mutation
base substitution
frameshift
The phenotype of an organism
represents its genetic composition.
reflects all the traits that are actually expressed.
occurs only in dominant pure organisms.
What is the expected genotypic ratio resulting from a homozygous dominant x heterozygous monohybrid cross?
1:0
1:1
1:2:1
Which of the following statements correctly describes the behavior of a tetrad during anaphase I of meiosis?
A) It travels intact to one pole of the dividing cell.
B) It splits into two pairs of sister chromatids, and one pair goes to each pole of the dividing cell.
C) It splits into four chromosomes, which distribute in random pairs to the two poles of the dividing cell.
D) It splits into two pairs of homologous, nonsister chromatids, and one pair goes to each pole of the dividing cell.
Which of the following statements regarding mitosis and meiosis is false?
A) All the events unique to meiosis occur during meiosis I.
B) Mitosis provides for growth and tissue repair.
C) Meiosis provides for asexual reproduction.
An example of this would be sweating to maintain a stable body temperature
homeostasis
experiment
theory
Research has shown that certain body cells, known as stem cells, can develop into a variety of specialized cells. Various factors can cause stem cells to develop into different types of mature cells. These different types of mature cells result from
different antibodies and mitotic cell division
identical genetic codes and meiotic cell division
different environments of the cells and the functioning of different parts of the genetics code
A monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base
Nucleotide
DNA polymerase
DNA ligase
Exons
Single-stranded nucleic acid that contains the sugar ribose
DNA
RNA
Building blocks of protein
Translation
RNA
Amino acid
Expressed sequence of DNA; codes for a protein
RNA
Codon
Introns
Exons
Cytoplasmic organelles at which proteins are synthesized.
Ribosome
Ribosomal RNA (rRNA)
Mutation
Situation in which one allele is not completely dominant over another allele
Testcross
Incomplete dominance
Codominance
What would a bacterial cell and a human body cell have in common?
cell wall, cytosol, and ribosomes
Cell membrane, cytosol , genetic material, and ribosomes
They have nothing in common
