BSCI 30270 Lecture Notes - Lecture 7: Cleavage Furrow, Sister Chromatids, Allosome
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Which of the following is correctly matched?
Prophase I - Nuclear envelope reforms,nucleolus reappears, spindle apparatus disappears | ||
Metaphase II - Homologous chromosomes align atthe equator (center) of the cell forming tetrads | ||
Anaphase II - Sister chromatids are pulled toopposite poles of the cell by contraction of spindle apparatusmicrotubules | ||
Cytokinesis - Division of the nucleus | ||
Telophase I - Nuclear envelope fragments,nucleolus disappears, spindle apparatus forms |
What is the difference between chromatin and chromosomes?
Question options:
chromatin is one of two identical strands of DNA. | |
chromosomes are chromatin that has been tightly packed and coiled. | |
chromosomes are composed of nucleosomes and chromatin is composed of sister chromatids. | |
chromosomes are important in mitosis and chromatin is essential to meiosis. |
Bacterial cells only reproduce asexually and cannot exchange genetic material.
Question options:
True, because they undergo binary fission. | |
False, because they transfer genetic material with other bacterial cells. | |
True, because they have a cell wall that prevents sharing of genetic material. |
After a visit to a specialist, Dan was diagnosed with liver cancer. Six months later additional tumors were found in his stomach and small intestine. This is an example of
Question options:
malignant tumors. | |
benign tumors. | |
Both malignant tumors and metastasis are correct. |
Which of the following does NOT occur during mitosis?
Question options:
DNA is replicated. | |
Replicated chromosomes divide. | |
Cells line up along the equator of the cell. |
Which of the following is INCORRECTLY matched?
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prophase -- mitotic spindle forms | |
metaphase -- chromosomes line up along the equator | |
telophase -- cytoplasm divides |
Why is hair loss a common side effect of cancer treatments?
Question options:
Hair cells are at the surface of the body so die easily. | |||||||
Hair cells divide rapidly and so are targeted by the cancer drugs. | |||||||
Cancer drugs often target and kill random cells within the body. From "Investigating Life: Cutting Off a Tumor's Supply Lines in the War on Cancer," how are endostatins used to treat cancerous cells? Question options:
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