Homework Answers
Mitosis is equational division which results in the formation of two diploid daughter cells from one diploid parent cell.
Prophase is characterized by the condensation of chromatin into chromosomes and disintegration of nuclear membrane.
Metaphase is characterized by the alignment of chromosomes at equatorial plate.
Anaphase is characterized by the separation of sister chromatid and movement towards the opposite poles of the cell.
Telophase is characterized by the reappearance of nuclear envelope and condensation of chromosomes into chromatin.
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Consider this micrograph of cells in different stages of the cell cycle. For the cell highlighted...
IDENTIFY STAGES OF THE CELL CYCLE IN PLANT AND ANIMAL CELLS 6. The image below shows...
IDENTIFY STAGES OF THE CELL CYCLE IN PLANT AND ANIMAL CELLS 6. The image below shows several plant cells in different stages of the cell cycle. Use the appearance of each cell to determine which stage of the cell cycle each of the cells labelled a-f is in. One of the cells is labelled to orient you Cell wall (yellow) Nucleus containing DNA (blue/black) and nucleoli (dark spots) (d) STAGE
6. What is meant by the concept that cells go through a cell cycle? 7. List...
6. What is meant by the concept that cells go through a cell cycle? 7. List the phases of the cell cycle with a brief description of what occurs in each phase. 8. Label the stages and key features of each stage of mitosis. 9. What is the role mitotic spindle? What is it made of?
1. Cells spend the longest amount of time in what stage of the cell cycle? What...
1. Cells spend the longest amount of time in what stage of the cell cycle? What evidence did you observe in the slides to justify your answer? 2. What is the purpose of mitosis? 3. For each of the stages of mitosis, provide a brief description of what you observed (not the book descriptions). How can you tell one stage from another? 4. What physical characteristics did you observe that differentiates plant cell mitosis from animal mitosis?
QUESTION 7 Quiescent cells are cells which are in Go stage of the cell cycle. What stimulus would be required for these...
QUESTION 7 Quiescent cells are cells which are in Go stage of the cell cycle. What stimulus would be required for these Go cells to re-enter the cell cycle? What event(s) occur after stimulation? Hint: Your complete response should include genes being transcribed and the different factors associated with that process ▼T·-·-▼ TTT Arial 3 (12pt) ▼ QUESTION 8 Consider that same cells in GO. In order for these cells to divide normally. they would need to renter G1 and...
9. In human cells four different cyclins drive the cell cycle (see picture). Please, note that...
9. In human cells four different cyclins drive the cell cycle (see picture). Please, note that the cyclins overlap (the picture shows the concentration of each cyclin protein in the cytoplasm). Write a short essay or outline of an experiment to test the following things: How can you figure out how much cyclin protein is present in the cytoplasm at different phases of the cell cycle? B. How can you figure out if there is overlap between the cyclins? For...
Make a labeled sketch of the stages of mitosis. (P158 - p159) In your own words...
Make a labeled sketch of the stages of mitosis. (P158 - p159) In your own words describe what happens in each stage of mitosis. Look at a prepared slide of allium (onion) root tip. Make a labeled sketch of 5 cells in different stages of mitosis. Look at a prepared slide of whitefish egg. Make a label sketch of 3 cells in different stages of mitosis. I. V. Refer to the drawings below to answer #'s List the letters of...
QUESTION 1 A gene that encodes a protein that stimulates progression of the cell cycle is...
QUESTION 1 A gene that encodes a protein that stimulates progression of the cell cycle is known as a proto-oncogene. True False QUESTION 2 Cytokinesis occurs after which stage or phase of the cell cycle? a. G2 b. S c. G0 d. G1 e. M phase QUESTION 3 During cell-cycle checkpoints, protein kinases known as CDKs phosphorylate target proteins only when they associate with a cyclin. True False QUESTION 4 During mitosis, many of the spindle fibers attach to chromosomes...
Question 1: The cell cycle has these stages
Question 1: The cell cycle has these stages A. GI, S, G2, M B. GI, S, BI, CL C. GI, S, G2, CI D. S, G2, NI, MI Question 2: During interphase, the following occurs A. Sister chromatids separate. B. Chromosome duplication takes place. C. Chromatin becomes tightly coiled. D. The mitotic spindle forms. Question 3: The correct sequence of stages of mitosis is A. prophase, metaphase, anaphase, telophase B. telophase, prophase, interphase, anaphase, metaphase C. interphase, anaphase, prophase, metaphase, telophase B. metaphase, prophase, anaphase, telophase Question 4: Human cells contain 23 pairs of chromosomes A....
1 You are a studying the progression of cells through the cell cycle. You are particularly...
1 You are a studying the progression of cells through the cell cycle. You are particularly interested in the cyclins E and A, both of which contribute sequentially to the same cell cycle transition. In this case one cyclin initiates the transition and the other completes the process. In these images you see cell extracts from Hela Cells. A) shows the levels of various proteins, while B) shows the amount of DNA in the cells, more DNA shifts this graph...
1.)You have discovered two different compounds that seem to arrest the cell cycle at different stages....
1.)You have discovered two different compounds
that seem to arrest the cell cycle at different stages. You treat
plates of cells with both of your drugs, stain their DNA, and
compare them to the control using flow cytometry.
1A.)Given your results, which of the drugs
halts cells in G1? In G2?
1B.)Which drug more closely mimics what would
occur if you treated control cells with a strong mitogen?
Control Drug A Drug B Control (replicating cells) 100 50 DNA Content...
IDENTIFY STAGES OF THE CELL CYCLE IN PLANT AND ANIMAL CELLS 6. The image below shows several plant cells in different stages of the cell cycle. Use the appearance of each cell to determine which stage of the cell cycle each of the cells labelled a-f is in. One of the cells is labelled to orient you Cell wall (yellow) Nucleus containing DNA (blue/black) and nucleoli (dark spots) (d) STAGE
1. Cells spend the longest amount of time in what stage of the cell cycle? What evidence did you observe in the slides to justify your answer? 2. What is the purpose of mitosis? 3. For each of the stages of mitosis, provide a brief description of what you observed (not the book descriptions). How can you tell one stage from another? 4. What physical characteristics did you observe that differentiates plant cell mitosis from animal mitosis?
QUESTION 7 Quiescent cells are cells which are in Go stage of the cell cycle. What stimulus would be required for these Go cells to re-enter the cell cycle? What event(s) occur after stimulation? Hint: Your complete response should include genes being transcribed and the different factors associated with that process ▼T·-·-▼ TTT Arial 3 (12pt) ▼ QUESTION 8 Consider that same cells in GO. In order for these cells to divide normally. they would need to renter G1 and...
9. In human cells four different cyclins drive the cell cycle (see picture). Please, note that the cyclins overlap (the picture shows the concentration of each cyclin protein in the cytoplasm). Write a short essay or outline of an experiment to test the following things: How can you figure out how much cyclin protein is present in the cytoplasm at different phases of the cell cycle? B. How can you figure out if there is overlap between the cyclins? For...
Make a labeled sketch of the stages of mitosis. (P158 - p159) In your own words describe what happens in each stage of mitosis. Look at a prepared slide of allium (onion) root tip. Make a labeled sketch of 5 cells in different stages of mitosis. Look at a prepared slide of whitefish egg. Make a label sketch of 3 cells in different stages of mitosis. I. V. Refer to the drawings below to answer #'s List the letters of...
1 You are a studying the progression of cells through the cell cycle. You are particularly interested in the cyclins E and A, both of which contribute sequentially to the same cell cycle transition. In this case one cyclin initiates the transition and the other completes the process. In these images you see cell extracts from Hela Cells. A) shows the levels of various proteins, while B) shows the amount of DNA in the cells, more DNA shifts this graph...
1.)You have discovered two different compounds
that seem to arrest the cell cycle at different stages. You treat
plates of cells with both of your drugs, stain their DNA, and
compare them to the control using flow cytometry.
1A.)Given your results, which of the drugs
halts cells in G1? In G2?
1B.)Which drug more closely mimics what would
occur if you treated control cells with a strong mitogen?
Control Drug A Drug B Control (replicating cells) 100 50 DNA Content...
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