Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 4, Problem 15TYK
Summary Introduction
To review:
The mitochondria are evolved from bacteria that entered cells by endocytosis. The likely origins of the outer and inner mitochondrial membranes.
Introduction:
The mitochondria contains its own DNA (deoxyribonucleic acid), ribosomes and the other molecular machinery. The structures present in the mitochondria resemble the equivalent structures present in the bacteria. There are various theories proposed due to these similarities and one of the most accepted theories is the “endosymbiotic theory”.
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What is the endosymbiotic hypothesis about the origin of mitochondria? What are the molecular facts that support the hypothesis? To which other cellular organelles can the hypothesis also be applied?
A principle of biology is that structure determines function.Explain how the invaginations of the inner mitochondrialmembrane are related to mitochondrial function.
Predict the outcome of a mitochondrial membrane that is more permeable to hydrogen ions than normal.
answer choices
A.) Increased levels of inorganic phosphate in the mitochondrial matrix
B.) Reduced formation of water
C.) Reduced activity of electron transport chain
D.) Increased activity of ATP synthase
Chapter 4 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 4.1 - Prob. 1SBCh. 4.2 - Where in a prokaryotic cell is DNA found? How is...Ch. 4.3 - Where in a eukaryotic cell is DNA found? How is...Ch. 4.3 - Prob. 2SBCh. 4.3 - Explain the structure and function of the...Ch. 4.3 - Prob. 4SBCh. 4.3 - What is the structure and function of the...Ch. 4.4 - Prob. 1SBCh. 4.4 - Prob. 2SBCh. 4.5 - What are the structures and function of anchoring...
Ch. 4.5 - Prob. 2SBCh. 4 - A prokaryote converts food energy into the...Ch. 4 - Eukaryotic and prokaryotic ribosomes are similar...Ch. 4 - Which of the following structures does not require...Ch. 4 - Which of the following structures is not used in...Ch. 4 - Which of the following are glycoproteins whose...Ch. 4 - Prob. 6TYKCh. 4 - Which of the following statements about proteins...Ch. 4 - Which of the following is not a component of the...Ch. 4 - Discuss Concepts Explain why aliens invading Earth...Ch. 4 - You are examining a cell from a crime scene using...Ch. 4 - Prob. 11TYKCh. 4 - Prob. 12TYKCh. 4 - Prob. 13TYKCh. 4 - Prob. 14TYKCh. 4 - Prob. 15TYKCh. 4 - Prob. 16TYKCh. 4 - 17. The unicellular alga Chlamydomonas reinhardtii...Ch. 4 - Prob. 1ITD
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- How are proteins normally transported into the mitochondrial matrix, if they were originally synthesized on ribosomes present in the cytosol (not on the rough endoplasmic reticulum)? they are packaged into vesicles with v-SNARES for fusion with their target organelles they can pass freely through large pores in the inner mitochondrial membrane they are secreted by the golgi, captured by receptors, and absorbed by endosomes they must pass through the nuclear envelope by means of nuclear pores they are unfolded in the translocation channel, then refolded by chaperonesarrow_forwardFor questions 30 through 36, select the location where the following events occur. Answers may be used once, more than once, or not at all. Some questions may have one answer, some questions may have more than one answer. a) mitochondrial inner membrane b) mitochondrial intermembrane space c) mitochondrial matrix d) thylakoid membrane e) thylakoid space 30. electron chain components embedded here 31. H+ pumped into here 32. found in plants 33. found in animals 34. ADP+ Pi→ ATP occurs here 35. ATP synthase embedded here 36. Light-capturing pigments embedded here asap please.arrow_forwardConcerning human biology, the major role of a cell's mitochondria is to provide the cells with usable energy in the form of ATP. In regard to the cellular respiration equation: Food + x(consumes) -----> y(produces + energy (ATP). As for "x" (what the cell consumes), I believe the answer is oxygen. As for "y" (what the cell produces), I'm guessing the answer is carbon dioxide. Could you please verify this, and better explain it to me?arrow_forward
- What are mitochondria? What is their structure, function, and where did they come from during evolution?arrow_forwardMitochondrial outer membrane permeabilization (MOMP) includes: Question 10 options: a) mitochondrial outer membranes are disrupted. b) caspases activation in either intrinsic or extrinsic pathway. c) cytochrome c release. d) All of the above. e) Only (a) and (c)arrow_forwardIt has been estimated that mitochondria occupy 20% of the volume in the human body. For a 70- kg adult, the average number of mitochondria has been estimated to be 1 × 10 (10,000 trillion). Using this information, provide a rough estimate of the average mass of a mitochondrion.arrow_forward
- Explain briefly how proteins synthesized in the cytosol get into mitochondrial matrix.arrow_forwardIf mitochondria originated as proteobacteria and chloroplasts are descended from cyanobacteria, where does the rest of the eukaryotic cell come from?arrow_forwardHow do scientists know that mitochondria and chloroplasts were likely once free-living prokaryotes? What theory is explained by this evidence?arrow_forward
- Imagine that you develop a procedure to measure the pH of in the matrix and the intermembrane space of a mitochondrion. What pattern of pH would you see? The pH in the intermembrane space will contain more H+ and have a lower pH compared to the matrix. The pH in the intermembrane space will contain more H+ and have a higher pH compared to the matrix. The pH within the matrix will contain more H+ and have a lower pH compared to the intermembrane space. The pH within the matrix will contain more H+ and have a higher pH compared to the intermembrane space.arrow_forwardAn experiment is conducted in which the mitochondrial content of various tissues is studied. It is found that the mitochondrial content is directly proportional to the amount of energy one cell is required to generate and expend. The mitochondrial content is most likely greatest in which of the following types of cells? (A) Cardiac muscle cells (B) Chondrocytes (C) Endothelial cells (D) Epidermal cells (E) Hepatocytes (F) Osteocytes (G) White adipocytesarrow_forwardc) The pH values of the different compartments are shown below: Matrix Intermembrane space Cytosol pH 7.8 – 8.0 pH ~ 7.0pH 7.0 – 7.4 How can you explain these values in terms of what is known about mitochondrial function?arrow_forward
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