You are carrying out experiments in cell fusion by fusing together cells at different stages of the cell cycle. You then observe the behavior of each nucleus residing in the combined cytoplasm of the two cells. Which of the following responses would occur if you fused an S-phase cell to a cell in the M phase? A. The M phase nucleus is affected in such a way that its compacted chromosomes decondense. B. The nucleus from the M phase cell starts to replicate its DNA. C. The chromatin in the S-phase nuclei is compacted, but pulverized chromosomal fragments form. D. The S-phase nucleus undergoes premature chromosomal condensation to form a set of elongated compacted chromosomes. The process that blocks active receptors from turning on additional G proteins is called ________. A. deactivation B. hyposensitization C. desensitization D. hypersensitization
Added by Kristen G.
Step 1
The S-phase nucleus undergoes premature chromosomal condensation to form a set of elongated compacted chromosomes. This is because the M phase cell's environment would induce the S phase cell to speed up its process and prepare for mitosis. Show more…
Show all steps
Your feedback will help us improve your experience
Jincy M Saji and 96 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
A body cell has been growing and at synthesis proteins. In the nucleus of this body cell, DNA replication is taking place. And a copy of the cell's genetic material is being copied. Which of the following is the best conclusion you can make about the life cycle of this cell? A) The cell is ready to undergo mitosis, and a chemical signal will send the cell to prophase. B) The cell is undergoing meiosis and will cross over the genetic material next. C) The cell is in the S phase of interphase and will move next to the G2 phase. D) The cell is in the G2 phase of interphase and is ready to begin dividing.
Marlyn J.
Question 1: Part A: Chromosomal DNA is duplicated during the ________ phase of the cell cycle. a) G1 b) G2 c) Mitotic d) S Part B: Sister chromatids separate from one another during mitosis in.. a) Anaphase b) Metaphase c) Prophase d) Telophase Part C: Cells move automatically through the G1, S, G2, and M phases of the cell cycle. However, movement through the cycle is also controlled at various ________ by internal and external factors that can either push the cell along the cycle or stop the cell from moving ahead in the cycle. a) Checkpoints b) Promoter Regions c) Regular Regions d) S Locations Part D Cancer is a group of many different diseases that all are caused by... a) Cells unable to exit the G0 stage of the cell cycle b) Inability to process energy c) Loss of protein function d) Uncontrolled cell division
Shaiju T.
Interphase is the part of the cell cycle when ________ a. a cell ceases to function b. the spindle forms prior to nuclear division c. a cell grows and replicates its DNA
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD