Top Mark Questions and Correct Verified Answers
BNNS502 pt 2 Questions and Correct
Verified Answers
Functions of the nucleus
✓ Control cellular structure, directs cellular activity, produces ribosomes
How many pairs of chromosomes does the body have
✓ 23
2 chromosomes making up a chromosome pair are called
✓ Homologous chromosomes
Allelels are
✓ Alternative versions of a gene
Describe Homozygous vs Heterozygous alleles
✓ Homozygous have identical info for a trait where as heterozygous have different
What are the 2 types of cell division
✓ Somatic and reproductive
Top Mark !!!
, Top Mark Questions and Correct Verified Answers
What is the aim of somatic cell division
✓ Replace dead or injured cells or add new ones via mitosis and cytokinesis
What s the aim of reproductive cell division
✓ Produce gamete haploid(23 single chromosomes) cells via meiosis
What are the 3 stages of somatic cell division
✓ - Interphase -Mitosis -Cytokinesis
What does Interphase involve
✓ Doubling of genetic material, DNA unzips via enzyme presence
What does Mitosis involve
✓ 4 stages in which nucleus/chromosomes divide
What occurs during cytokinesis
✓ Division of cytoplasm to create 2 identical daughter cells
Describe meiosis I and meiosis II
Top Mark !!!
, Top Mark Questions and Correct Verified Answers
✓ Meiosis I: 4 Stages that produce 2 genetically different cells
✓ Meiosis: Similar to mitosis (division of cytoplasm)
What is the purpose of crossing over during meiosis I
✓ Genetic variation because of the exchange of genes homologous chromosomes
What is cancer
✓ The result of uncontrolled or abnormal cell proliferation resulting in excess
tissue called a tumour
Carcinoma cancers arise from
✓ Epithelial tissue
Leukaemia cancer arises from
✓ WBC
Define inheritance
✓ Passage of hereditary traits from one generation to another
Compare genotype to a phenotype
Top Mark !!!
BNNS502 pt 2 Questions and Correct
Verified Answers
Functions of the nucleus
✓ Control cellular structure, directs cellular activity, produces ribosomes
How many pairs of chromosomes does the body have
✓ 23
2 chromosomes making up a chromosome pair are called
✓ Homologous chromosomes
Allelels are
✓ Alternative versions of a gene
Describe Homozygous vs Heterozygous alleles
✓ Homozygous have identical info for a trait where as heterozygous have different
What are the 2 types of cell division
✓ Somatic and reproductive
Top Mark !!!
, Top Mark Questions and Correct Verified Answers
What is the aim of somatic cell division
✓ Replace dead or injured cells or add new ones via mitosis and cytokinesis
What s the aim of reproductive cell division
✓ Produce gamete haploid(23 single chromosomes) cells via meiosis
What are the 3 stages of somatic cell division
✓ - Interphase -Mitosis -Cytokinesis
What does Interphase involve
✓ Doubling of genetic material, DNA unzips via enzyme presence
What does Mitosis involve
✓ 4 stages in which nucleus/chromosomes divide
What occurs during cytokinesis
✓ Division of cytoplasm to create 2 identical daughter cells
Describe meiosis I and meiosis II
Top Mark !!!
, Top Mark Questions and Correct Verified Answers
✓ Meiosis I: 4 Stages that produce 2 genetically different cells
✓ Meiosis: Similar to mitosis (division of cytoplasm)
What is the purpose of crossing over during meiosis I
✓ Genetic variation because of the exchange of genes homologous chromosomes
What is cancer
✓ The result of uncontrolled or abnormal cell proliferation resulting in excess
tissue called a tumour
Carcinoma cancers arise from
✓ Epithelial tissue
Leukaemia cancer arises from
✓ WBC
Define inheritance
✓ Passage of hereditary traits from one generation to another
Compare genotype to a phenotype
Top Mark !!!
