Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 2, Problem 2.7PS
The Polarity of Water. Defend the assertion that all of life as we know it depends critically on the fact that the angle between the two hydrogen atoms in the water molecule is 104.5° and not 180°.
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atoms. 12 hydrogens, 6 oxuger
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12) Back to the person who ate 300 grams of glucose, how many moles of glucose is this?
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There are 2 moles.
13) If a person were to eat this much glucose all at once (that is a lot of sugar) and all this sugar enters
the blood then the person's blood sugar concentration would rise. Imagine that all this glucose is
released into the 5 liters of blood that circulate in this person. What would be the molarity of
glucose in the blood?
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14) After each of these glucose molecules enter the blood they are uptaken through cell membranes
to enter cells. Within these cells glucose is broken down in a series of steps releasing carbon
dioxide along the way.
For every molecule of glucose broken down how many molecules of carbon dioxide are created?
Refer to the cellular respiration equation:
Equation for Cellular Respiration: How to break down a carb
C6H12O6 + 60₂
➜…
Beta folding. Parallel and antiparallel beta folding sheets (be able to draw). Beta loops. Examples of proteins formed mainly by this structure.
Please ASAP. Thanku.
Explain in detail why water molecules are polar. Your explanation can be as long as you wish. Your answer must be in your own words. Your answer must include the following terms: Polar, polar covalent bonds, electronegativity, oxygen, hydrogen, partial positive, partial negartive, electrons.
Chapter 2 Solutions
Becker's World of the Cell (9th Edition)
Ch. 2 - What properties of the carbon atom make it...Ch. 2 - QUESTION: Compare the flights of the ionized...Ch. 2 - How would the properties of water change if the...Ch. 2 - Why is the amphipathic nature of membrane...Ch. 2 - Problem Set CONCEPT CHECK 2.4 What characteristics...Ch. 2 - Problem Set CONCEPT CHECK 2.5 TMV is an...Ch. 2 - The Fitness of Carbon. Each of the properties that...Ch. 2 - The Fitness of Water. For each of these statements...Ch. 2 - Wrong Again. For each of the following false...Ch. 2 - Prob. 2.4PS
Ch. 2 - Drug Targeting. Your company has developed a new...Ch. 2 - Its All About Membranes. Answer each of the...Ch. 2 - The Polarity of Water. Defend the assertion that...Ch. 2 - QUANTITATIVE Bond Energies. A single covalent bond...Ch. 2 - TMV Assembly. Each of these statements is an...Ch. 2 - Mars Is Alive? Imagine this futuristic scenario:...
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- Alpha-helix of proteins, its characteristics. Draw a diagram of the arrangement of amino acids in the alpha helix. Examples of proteins formed mainly by this structure.arrow_forwardNo Plagiarism Please! In one to two sentences, give a reason that chemists would use ribbon diagrams instead of different model type. What type of information do they provide?arrow_forwardMore ratios. Through the use of nuclear magnetic resonance spectroscopy, it is possible to determine the ratio between the protonated and deprotonated forms of buffers. (a) Suppose the ratio of [ A- ]A I to [HA] is determined to be 0.1 for a buffer with pKar6.0.pKa = 6.0. What is the pH? (b) For a different buffer, 91974 suppose the ratio of [ A- ]lA J to [HA] is determined to be 0.1 and the pHpH is 7.0. In this case, what is the pKapKa of the buffer? (c) For another buffer with pKa=7.5PKa = 7.5 at pH 8.0pH 8.0, what is the expected ratio of [ A- ][A ] to [HA]? doarrow_forward
- True or False. A long string of any compounds linked together using dehydration reactions would be considered a polymer. Justify your claim in 25 words or lessarrow_forwardNo. Because sugar easily dissolves in a polar solvent (water), you can correctly predict that it has several polar covalent bonds.arrow_forwardPotassium Phosphorus Calcium P. Bonding. A bond is a connection between two atoms, created when atoms either share electrons to form a bond or when one atom donates an electron to the other atom to form a(n) bond. 5.1. Examine the water molecule in figures 2.14 of your textbook. What type of bond occurs between each hydrogen and the oxygen? 5.2. Oxygen is a big atom compared to hydrogen. Like a larger planet has greater gravitational pull than a smaller planet, a bigger atom can have a stronger pull on electrons it shares with a smaller atom. In the case of water, oxygen draws the electrons it shares with hydrogen closer to itself and farther away from hydrogen. This creates partial charges within the molecule. Draw a molecule of water following the ball-and-stick model in figure 2.12, then add the partial charges associated with water. Use the delta (8) symbol with a + or - to represent each partial charge. 5.3. Is there equal sharing of electrons between atoms in water? of the water…arrow_forward
- nothing here has a full charge. Need to connect molecules in the hydration shell.arrow_forward|| Biological Molecules-Modelling Activity AC1.1-ustrate or construct molecular models of simple arganic compounds. Using the key shown, illustrate the biological molecules that are named below: Alpha Glucose Key Single Bond O Hydrogen Double Bond Oxygen Nitrogen Glycerol Glycine (r=H) Focarrow_forwardExpanding what we know. In the last example in the video, the empirical mass was 101.9. What if instead of the given molecular mass, I'd told you that the molecular as was 305.7, what would the molecular formula be. (Be sure to do it in order C#Cl#F# so that the program will accept your answer)arrow_forward
- On the trail of carbons. Tissue culture cells were incubated with glutamine labeled with 15NN in the amide group. Subsequently, IMP was isolated and found to contain some 15N.N. Which atoms in IMP were labeled?arrow_forwardMULTIPLE CHOICE Biomolecules. Choose the best answer on the given choices.arrow_forwardPlease help! Ribbon diagrams show secondary structures and appear less detailed than other model types. In one to two sentences, give a reason that chemists would use ribbon diagrams. What type of information do they provide?arrow_forward
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