QUESTIONS AND ANSWERS PROFESSOR

BIO 101 NVC

QUESTIONS AND ANSWERS PROFESSOR

VERIFIED ALREADY GRADED A+ JUST

RELEASED.

⫸ What are sister chromatids and where are they attached to each other?

Answer: joined identical copies of the original chromosome joined at the

centromere

⫸ What are the different stages of cell cycle? (include all phases). Answer:

Interphase- including cell growth and copying of chromosomes in preparation for cell division Mitotic (M) phase- including mitosis and cytokinesis

⫸ What are the five phase of mitosis? Answer: Prophase

Prometaphase Metaphase Anaphase Telophase

⫸ What is the function of mitotic spindle and kinetochores? Answer:

spindle microtubules attach to the kinetochores of chromosomes and begin to move the chromosomes Kinetochores are protein complexes that assemble on sections of DNA at centromeres

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⫸ What is the difference in the cytokinesis of plants and animal cells?

Answer: In animal cells, cytokinesis occurs by a process known as cleavage,

forming a cleavage furrow In plant cells, a cell plate forms during cytokinesis

⫸ The prokaryotic cell reproduces by -----------------. Answer: binary fission

⫸ The process by which a normal cell turns into cancerous cell is called-----

------. Answer: transformation

⫸ What is the difference between benign tumor and malignant tumor?

Answer: If abnormal cells remain only at the original site and they have too

few genetic and cellular changes to survive at other site, then the tumor is called a benign tumor

⫸ What is a metastasis? Answer: Metastasis is a stage of exporting cancer

cells to other parts of the body, where they may form additional tumors

⫸ What is heredity and what are the units of heredity? Answer: Heredity is

the transmission of traits from one generation to the next DNA

⫸ What are genes? How are they passed from one generation to another?

Answer: Genes are the units of heredity and are made up of segments of

DNA Genes are passed to the next generation via reproductive cells called gametes (sperm and eggs)

⫸ What is the difference between asexual and sexual reproduction?

Answer: In asexual reproduction, a single individual passes genes to its

offspring without the fusion of gametes

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