A mitochondrion 1 μm long can travel the 1 meterlength of the axon from the spinal cord to the big toe in aday. The Olympic men’s freestyle swimming record for 200meters is 1.75 minutes. In terms of body lengths per day,who is moving faster: the mitochondrion or the Olympicrecord holder? (Assume that the swimmer is 2 meters tall.)

A mitochondrion 1 μm long can travel the 1 meterlength of the axon from the spinal cord to the big toe in aday. The Olympic men’s freestyle swimming record for 200meters is 1.75 minutes. In terms of body lengths per day,who is moving faster: the mitochondrion or the Olympicrecord holder? (Assume that the swimmer is 2 meters tall.)

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter4: How Cells Obtain Energy

Section: Chapter Questions

Problem 2ACQ: Figure 4.15 Cyanide inhibits cytochrome c oxidase, a component of the electron transport chain. If...

See similar textbooks

Similar questions

Every cell in the body has organelles called mitochondria that can generate a voltage difference between their interior and exterior. If the capacitance of a mitochondrion is 2.9×10^−11F and the potential difference between the interior and exterior is 0.20 V, how much electrical energy does it store? Express your answer to two significant figures and include appropriate units. If a mitochondrion were to use all of its stored electrical energy to produce ATP molecules, and each ATP molecule requires 9.5×10−20J, how many molecules could it produce? (In reality, ATP molecules are produced by the flow of protons caused by the proton motive force, and not by the direct conversion of electrical energy stored by the capacitance of mitochondria.)
It is essential for the cells in plants and animals to have an adequate supply of oxygen. Explain what the oxygen is needed for in the cells? (Be as specific as possible.)
Practitioners of naturopathic medicine often use “essential oils” such as lavender oil. (Note that essential refers to their essence or scent and does not imply that these substances are necessary for health.) One of the components of lavender oil is shown below. Based on its structure, could this molecule diffuse through the cell membrane of a skin cell after the oil was applied to the skin surface?
you were looking at an enlarged liver cell (60 microns in diameter), how many mitochondria could it hold assuming there were no other cellular components? (Assume mitochondria are spherical with a diameter of 1.4 µM; assume the liver cell is spherical, and the volume of a sphere is 4/3 n ). If
It 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.
Use the Stokes-Einstein equation to estimate the diffusion coefficient in m2/s and in um?/s for the following particles. Assume that the particles are immersed in water in a test tube at body temperature (37 °C), which has a viscosity of approximately 0.0007 kg m1 s1. Assume the particles are all spherical Particle Diameter ATP 1.4 nm Eukaryotic ribosome 25 nm SARS-COV-2 100 nm
How many human eukaryotic cells does it take in a single second to use exactly one nanojoule (1 × 10−9 J) of energy if each cell uses 2.00 × 10−17 joules every second? Answer: __________ × 107 cells
Consider a 24:1 △cis-9 fatty acid in the mitochondrion. For each fatty acid given, determine the following. Total number of ATP deducted Total net ATP
ATP is a limited source of energy for skeletal muscle contraction. The cell has other ways of producing ATP depending on the duration and type of exercise. Describe these other processes contributing to ATP production in a person is running on a treadmill for 30 minutes.
The small capillaries in the lungs are in close contact with the alveoli. A red blood cell takes up oxygen during the 0.5 s that it squeezes through a capillary at the surface of an alveolus. What is the diffusion time for oxygen across the 1-μm -thick membrane separating air from blood? Assume that the diffusion coefficient for oxygen in tissue is 2×10−11m2/s. Give your answer to 1 significant figure.
Nitric oxide (NO) is a gaseous molecule with lipid solubility similar to that of O2 and CO2. Endothelial cells lining arteries use NO to signal surrounding smooth muscle cells to relax, thereby increasing blood flow. What mechanism or mechanisms would transport NO from where it is produced in the cytoplasm of an endothelial cell into the cytoplasm of a smooth muscle cell, where it acts?
Practitioners of naturopathic medicine often use “essential oils” such as lavender oil. (Note that essential refers to their essence or scent and does not imply that these substances are necessary for health.) One of the components of lavender oil is shown below. Based on its structure, could this molecule diffuse through the cell membrane of a skin cell after the oil was applied to the skin surface? Explain your answer