Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 11.5, Problem 2CC
WH AT IF? → If apoptosis occurred when it should not, what types of protein defects might be the cause? What types could result in apoptosis not occurring when it should?
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Mention what are the important functions of apoptosis? discuss briefly at your own words?
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QUESTIONS:
- WHEN do you think apoptosis occurs in humans?
- What would be the effect if apoptosis doesn't happen?
EXPLAIN YOUR ANSWER.
WRITE ABOUT A THEME: ORGANIZATION The properties oflife emerge at the biological level of the cell. The highly regulated process of apoptosis is not simply the destruction of acell; it is also an emergent property. Write a short essay (about100–150 words) that briefly explains the role of apoptosis inthe development and proper functioning of an animal, and describe how this form of programmed cell death is a process thatemerges from the orderly integration of signaling pathways.
Chapter 11 Solutions
Campbell Biology
Ch. 11.1 - Explain how signaling is involved in ensuring that...Ch. 11.1 - In liver cells, glycogen Phosphorylase acts in...Ch. 11.1 - Prob. 3CCCh. 11.2 - Prob. 1CCCh. 11.2 - WHAT IF? What would the effect be if a cell made...Ch. 11.2 - MAKE CONNECTIONS How is ligand binding similar to...Ch. 11.3 - What is a protein kinase, and what is its role in...Ch. 11.3 - When a signal transduction pathway involves a...Ch. 11.3 - What is the actual signal that is being transduced...Ch. 11.3 - WHAT IF? If you exposed a cell to a ligand that...
Ch. 11.4 - How can a targct cell's response to a single...Ch. 11.4 - WHAT IF? If two cells have different scaffolding...Ch. 11.4 - Prob. 3CCCh. 11.4 - Prob. 4CCCh. 11.5 - Give an example of apoptosis during embryonic...Ch. 11.5 - WH AT IF? If apoptosis occurred when it should...Ch. 11 - What determines whether a cell responds to a...Ch. 11 - How are the structures of a GPCR and an RTK...Ch. 11 - What is the difference between a protein kinase...Ch. 11 - What mechanisms in the cell terminale its response...Ch. 11 - What is an explanation for the similarities...Ch. 11 - Binding of a signaling molecule to which type of...Ch. 11 - The activation of receptor tyrosinc kinases is...Ch. 11 - Lipid-soluble signaling molecules, such as...Ch. 11 - Consider this pathway: epinephrine G...Ch. 11 - Apoptosis involves all but which of the following?...Ch. 11 - Which Observation suggestcd to Sutherland the...Ch. 11 - Prob. 7TYUCh. 11 - DRAW IT Draw the following apoptotic pathway,...Ch. 11 - EVOLUTION CONNECTION Identify the evolutlonary...Ch. 11 - Prob. 10TYUCh. 11 - SCIENCE, TECHNOLOGY, AND SOCIETY The aging process...Ch. 11 - WRITE ABOUT A THEME: ORGANIZATION The properties...Ch. 11 - SYNTHESIZE YOUR KNOWLEDGE There are five basic...
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- Mention what are the important functions of apoptosis? discuss brieflyarrow_forward. MAKE CONNECTIONS The p53 protein can activategenes involved in apoptosis. Review Concept 11.5, anddiscuss how mutations in genes coding for proteins thatfunction in apoptosis could contribute to cancer.arrow_forward. Please explain the role of Ubiquitin Ligase Activity in the regulation of apoptotic cell death.arrow_forward
- Q. Cyclins and CDK(inase) complexes regulate the cell cycle. Which of the following statements is true? A. Cyclins activate CDKs which remove phosphates from other proteins. B. Cyclins activate CDKs which add phosphates to other proteins. C. CDKs activate cyclins which remove phosphates from other proteins. D. CDKs activate cyclins which add phosphates to other proteins.arrow_forwardBriefly discuss the important functions of apoptosis & autophagy?arrow_forwardHow is apoptosis involved in cancer? Describe the role of apoptosis in cancer and identify what molecules are involved. Cite your references. asap.arrow_forward
- Fighting Cancer by Disrupting Mitosis Scientists have identified a number of toxins that disrupt mitosis. These toxins can be used in many different ways – some of them are used during scientific research to arrest the cell cycle at specific points so that the cells can be studied. Others have clinical applications as chemotherapeutic drugs that are useful in the treatment of cancer, as well as other types of disease. Study the list of toxins below, and use the information provided and your understanding of mitosis to answer the questions below. Note: some of these drugs are currently approved for clinical use, while others are still in development. For the purposes of this exercise, assume that all of them are available for use. Drug How it affects mitosis Status of drug Vincristine Prevents polymerization of tubulin Approved Paclitaxel Prevents depolymerization of tubulin and can result in multipolar spindle formation Approved Flavopiridol Blocks Cdk-1. Cdk-1 is a kinase that helps…arrow_forwardDescribe how Ras and p53 can alter the simplified genetic pathway controlling cell division shown below. For each of the two genes, would uncontrolled cell division result from a loss-of-function or a gain-of-function mutation? growth factors - receptors - cyclins - cyclin-dependent kinases - cell divisionarrow_forwardMy question is two fold. What are some diseases that cause and/or are caused by apoptosis? Also if apoptosis is the most common form of programmed cell death in animals, what other forms of programmed cell death are there? Thank you.arrow_forward
- Artificially induced apoptosis (controlled cellular death) is found to be an effective treat- ment for some forms of cancer. Which of the following describes the most likely mechanism by which apoptosis might be induced? A B с D by causing ribosomes to increase the rate of protein synthesis by triggering the division of mitochondria in the cell to increase ATP production by increasing the expression of membrane-bound glucose protein channels by causing lysosomes to release digestive enzymes into the cytosolarrow_forwardHi, can you explain this concept: cell cycle progression can be halted at several points by the tumor suppressor gene product p53, activated in response to checkpoints sensing DNA and possibly also chromosome damage; loss of p53 would remove this brake to cycling. How these events can lead to cancer progression?arrow_forwardThe cell cycle contains a series of events that control the division of cells. It is controlled by which of the following: P. dephosphorylation of cyclin-dependent kinases (S) Q. binding of CDK inhibitor proteins (R) R. cyclin synthesis and degradation (P) S. phosphorylation of cyclin-dependent kinases (Q) R and S P, Q, R, and S Q and R P and Qarrow_forward
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