Human Anatomy & Physiology
1st Edition
ISBN: 9780805382952
Author: Erin C. Amerman
Publisher: PEARSON
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Chapter 4.2, Problem 4QC
What are the differences between simple, stratified, and pseudostratified epithelium?
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Please help with question. thank you
You are studying the expression of the lac operon. You have isolated mutants as described below. In the presence of glucose, explain/describe what would happen, for each mutant, to the expression of the lac operon when you add lactose AND what would happen when the bacteria has used up all of the lactose (if the mutant is able to use lactose).5. Mutations in the lac operator that strengthen the binding of the lac repressor 200 fold
6. Mutations in the promoter that prevent binding of RNA polymerase
7. Mutations in CRP/CAP protein that prevent binding of cAMP8. Mutations in sigma factor that prevent binding of sigma to core RNA polymerase
Molecular Biology
Please help and there is an attached image. Thank you.
A bacteria has a gene whose protein/enzyme product is involved with the synthesis of a lipid necessary for the synthesis of the cell membrane. Expression of this gene requires the binding of a protein (called ACT) to a control sequence (called INC) next to the promoter.
A. Is the expression/regulation of this gene an example of induction or repression?Please explain:B. Is this expression/regulation an example of positive or negative control?C. When the lipid is supplied in the media, the expression of the enzyme is turned off.Describe one likely mechanism for how this “turn off” is accomplished.
Chapter 4 Solutions
Human Anatomy & Physiology
Ch. 4.1 - What are the four types of tissues, and what are...Ch. 4.1 - What are the two major components of the ECM, and...Ch. 4.1 - What are the three types of protein fibers?...Ch. 4.1 - Prob. 4QCCh. 4.2 - Why is living epithelial tissue limited to a...Ch. 4.2 - Where is the ECM of epithelial tissue located, and...Ch. 4.2 - What are the three basic shapes of epithelial...Ch. 4.2 - What are the differences between simple,...Ch. 4.2 - Prob. 5QCCh. 4.2 - How do exocrine and endocrine glands differ?
Ch. 4.2 - Compare and contrast merocrine and holocrine...Ch. 4.3 - 1. What are the types of cells of connective...Ch. 4.3 - What is the primary component in: a. loose...Ch. 4.3 - What are the primary differences between brown and...Ch. 4.3 - How do the three types of cartilage differ?Ch. 4.3 - How do bone and blood differ from other connective...Ch. 4.4 - What are the two forms of muscle cells, and how do...Ch. 4.4 - Compare and contrast the three types of muscle...Ch. 4.5 - What are the two main cell types in nervous...Ch. 4.5 - 2. What are the three parts of a neuron, and what...Ch. 4.7 - Where are serous and synovial membranes located,...Ch. 4.7 - 2. Where are mucous membranes located, and what...Ch. 4.7 - 3. What is the cutaneous membrane? What is its...Ch. 4.8 - How do regeneration and fibrosis differ?Ch. 4.8 - Which tissues generally heal by regeneration?...Ch. 4.8 - Which factors influence the ability of a tissue to...Ch. 4 - 1 Which of the following best describes the...Ch. 4 - 2. State whether each of the following describes...Ch. 4 - Describe the roles of each of the following...Ch. 4 - Prob. 4CYRCh. 4 - Mark the following statements as true or false. If...Ch. 4 - 6. Match each type of epithelium with its correct...Ch. 4 - Compare and contrast the following pairs of terms:...Ch. 4 - Explain how connective tissues differ from...Ch. 4 - 9. Mark the following statements as true or...Ch. 4 - 10. Match the following types of connective...Ch. 4 - Which of the following statements about muscle...Ch. 4 - 12. Fill in the blanks: _____are the cells of...Ch. 4 - Prob. 13CYRCh. 4 - Which tissues undergo regeneration? Which tissues...Ch. 4 - 1. If you were to cut through epithelial tissue...Ch. 4 - Prob. 2CYUCh. 4 - Prob. 3CYUCh. 4 - The disease pemphigus vulgaris involves a patients...Ch. 4 - Prob. 2AYKACh. 4 - 3. In the disease pulmonary fibrosis, elastic...Ch. 4 - Imagine that a disease turns the simple epithelia...Ch. 4 - Epithelial cells of the kidneys have pumps that...Ch. 4 - Explain why it would be difficult for a mature...Ch. 4 - 7. Predict which organelles are likely to be...
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