BIO 100 EXAM 2 UPDATED EXAM SCRIPT WITH
COMPLETE ANSWERS
◉ haploid
Answer: having a single set of unpaired chromosomes
◉ What type of cells are haploid?
Answer: gametes (egg and sperm)
◉ function of haploid cells
Answer: reproduction
◉ how many chromosomes are in a haploid?
Answer: 23 - The sperm and egg cells (gametes) have only ONE copy
of each chromosome, so they have 23 chromosomes.
◉ diploid
Answer: (genetics) an organism or cell having two sets of
chromosomes or twice the haploid number
◉ what type of cells are diploid?
Answer: somatic (body) cells
,◉ function of diploid cells
Answer: Diploid cells make up your body, help you grow and heal,
and create gametes for reproduction
◉ number of chromosomes in a diploid cell
Answer: 46 - We have 23 pairs of chromosomes in every cell, so our
diploid number is 46 (2n = 46)
◉ location of genes
Answer: locus
◉ allele
Answer: Different forms of a gene
◉ do you have more than one allele?
Answer: Because humans are diploid, you usually have two alleles
for each gene:
One from your mother
One from your father
◉ mitosis
, Answer: Division of the nucleus - karyokinesis
Asexual process
Simple cell division
Purpose - for growth and repair
◉ PMAT
Answer: prophase, metaphase, anaphase, telophase
◉ prophase
Answer: Centrosomes migrate to opposite ends of the cell
Nuclear membrane disintegrates
Chromosomes condense
Spindle apparatus forms
Microtubules form a football shaped spindle between the 2 pairs of
centrioles
◉ metaphase
Answer: Line up at the equatorial (metaphasic) plate
◉ anaphase
Answer: Chromosomes break at centromeres, and sister chromatids
move to opposite ends of the cell
COMPLETE ANSWERS
◉ haploid
Answer: having a single set of unpaired chromosomes
◉ What type of cells are haploid?
Answer: gametes (egg and sperm)
◉ function of haploid cells
Answer: reproduction
◉ how many chromosomes are in a haploid?
Answer: 23 - The sperm and egg cells (gametes) have only ONE copy
of each chromosome, so they have 23 chromosomes.
◉ diploid
Answer: (genetics) an organism or cell having two sets of
chromosomes or twice the haploid number
◉ what type of cells are diploid?
Answer: somatic (body) cells
,◉ function of diploid cells
Answer: Diploid cells make up your body, help you grow and heal,
and create gametes for reproduction
◉ number of chromosomes in a diploid cell
Answer: 46 - We have 23 pairs of chromosomes in every cell, so our
diploid number is 46 (2n = 46)
◉ location of genes
Answer: locus
◉ allele
Answer: Different forms of a gene
◉ do you have more than one allele?
Answer: Because humans are diploid, you usually have two alleles
for each gene:
One from your mother
One from your father
◉ mitosis
, Answer: Division of the nucleus - karyokinesis
Asexual process
Simple cell division
Purpose - for growth and repair
◉ PMAT
Answer: prophase, metaphase, anaphase, telophase
◉ prophase
Answer: Centrosomes migrate to opposite ends of the cell
Nuclear membrane disintegrates
Chromosomes condense
Spindle apparatus forms
Microtubules form a football shaped spindle between the 2 pairs of
centrioles
◉ metaphase
Answer: Line up at the equatorial (metaphasic) plate
◉ anaphase
Answer: Chromosomes break at centromeres, and sister chromatids
move to opposite ends of the cell
