SBI3U - Grade 11 Biology Questions
with complete solution 2025
Prophase - correct answer First phase of mitosis
Gene - correct answer Sequence of DNA that codes for a protein.
Mitosis - correct answer Replicated DNA is separated into two different
complete identical sets of DNA, one for each daughter cell's nucleus.
Cytokinesis - correct answer The division of the cytoplasm to form new cells.
Interphase - correct answer Before a cell divides, the DNA makes a copy of
itself.
Centromere - correct answer Area where the chromatids of a chromosome
are attached.
Chromatin - correct answer DNA before mitosis (long, thin strands that form a
tangled mess).
Spindle Fibers - correct answer Long protein structures that grow out from the
centrioles and become attached to the centromere of the chromosome.
Metaphase - correct answer The tugging action of the spindle fibres pull the
double stranded chromosomes into a line along the middle of the cell.
,Anaphase - correct answer Centromere splits and the sister chromatids
pulled to opposite ends (poles) of the cell.
Nucleotide - correct answer A repeating unit of DNA consisting of one of four
bases attached to a phosphate-sugar group.
Telophase - correct answer Spindle fibres disappear and a nuclear
membrane form around each set of chromosomes.
Cytokinesis - correct answer The division of the cytoplasm to form two
separate daughter cells immediately after mitosis.
Number of chromosomes in humans - correct answer 46
Meiosis - correct answer Cell division that produces reproductive cells in
sexually reproducing organisms.
Gametes - correct answer Sex cells.
Haploid Chromosome Number - correct answer 23
Somatic Cells - correct answer Body cells.
Diploid Chromosome Number - correct answer 46
Homologous Chromosomes - correct answer Paired chromosomes with
similar shape, size, centromere location, and location of genes.
, Crossing Over - correct answer Homologous chromosomes interact and
exchange portions of their chromatids during meiosis.
Number of cells produced in meiosis - correct answer 4
Prophase I - correct answer Homologous chromosomes pair up (synapsis).
Independent Assortment - correct answer Chromosomes "randomly" going to
each pole during Anaphase I.
Telophase I - correct answer Each pole now has a haploid set of
chromosomes.
Anaphase II - correct answer Sister chromatids separate and move to
opposite poles.
Oogenesis - correct answer Egg production.
Spermatogenesis - correct answer Production of sperm.
Non-disjunction - correct answer Occurs when two homologous
chromosomes do not separate, but instead more to the same pile during
Meiosis I.
Polar Bodies - correct answer Eggs that will die during oogenesis.
Trisomy - correct answer Zygote with 3 copies of a chromosome.
with complete solution 2025
Prophase - correct answer First phase of mitosis
Gene - correct answer Sequence of DNA that codes for a protein.
Mitosis - correct answer Replicated DNA is separated into two different
complete identical sets of DNA, one for each daughter cell's nucleus.
Cytokinesis - correct answer The division of the cytoplasm to form new cells.
Interphase - correct answer Before a cell divides, the DNA makes a copy of
itself.
Centromere - correct answer Area where the chromatids of a chromosome
are attached.
Chromatin - correct answer DNA before mitosis (long, thin strands that form a
tangled mess).
Spindle Fibers - correct answer Long protein structures that grow out from the
centrioles and become attached to the centromere of the chromosome.
Metaphase - correct answer The tugging action of the spindle fibres pull the
double stranded chromosomes into a line along the middle of the cell.
,Anaphase - correct answer Centromere splits and the sister chromatids
pulled to opposite ends (poles) of the cell.
Nucleotide - correct answer A repeating unit of DNA consisting of one of four
bases attached to a phosphate-sugar group.
Telophase - correct answer Spindle fibres disappear and a nuclear
membrane form around each set of chromosomes.
Cytokinesis - correct answer The division of the cytoplasm to form two
separate daughter cells immediately after mitosis.
Number of chromosomes in humans - correct answer 46
Meiosis - correct answer Cell division that produces reproductive cells in
sexually reproducing organisms.
Gametes - correct answer Sex cells.
Haploid Chromosome Number - correct answer 23
Somatic Cells - correct answer Body cells.
Diploid Chromosome Number - correct answer 46
Homologous Chromosomes - correct answer Paired chromosomes with
similar shape, size, centromere location, and location of genes.
, Crossing Over - correct answer Homologous chromosomes interact and
exchange portions of their chromatids during meiosis.
Number of cells produced in meiosis - correct answer 4
Prophase I - correct answer Homologous chromosomes pair up (synapsis).
Independent Assortment - correct answer Chromosomes "randomly" going to
each pole during Anaphase I.
Telophase I - correct answer Each pole now has a haploid set of
chromosomes.
Anaphase II - correct answer Sister chromatids separate and move to
opposite poles.
Oogenesis - correct answer Egg production.
Spermatogenesis - correct answer Production of sperm.
Non-disjunction - correct answer Occurs when two homologous
chromosomes do not separate, but instead more to the same pile during
Meiosis I.
Polar Bodies - correct answer Eggs that will die during oogenesis.
Trisomy - correct answer Zygote with 3 copies of a chromosome.
