Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 3, Problem 33CTQ
Aquaporins are proteins embedded in the plasma membrane that allow water molecules to move between the extracellular matrix and the intracellular space. Based on its function and location, describe the key features of the protein’s shape and the chemical characteristics of its amino acids.
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Chapter 3 Solutions
Biology 2e
Ch. 3 - Figure 3.5 What kind of sugars are these, aldose...Ch. 3 - Figure 3.23 Which categories of amino acid would...Ch. 3 - Figure 3.33 A mutation occurs, and cytosine is...Ch. 3 - Dehydration synthesis leads to formation of...Ch. 3 - During the breakdown of polymers, which of the...Ch. 3 - The following chemical reactants produce the ester...Ch. 3 - An example of a monosaccharide is fructose glucose...Ch. 3 - Cellulose and starch are examples of:...Ch. 3 - Plant cell walls contain which of the following in...Ch. 3 - Lactose is a disaccharide formed by the formation...
Ch. 3 - Which of the following is not an extracellular...Ch. 3 - Saturated fats have all of the following...Ch. 3 - Phospholipids are important components of...Ch. 3 - Cholesterol is an integral part of plasma...Ch. 3 - The monomers that make up proteins are called...Ch. 3 - The helix and the pleated sheet are part of...Ch. 3 - Mad cow disease is an infectious disease where one...Ch. 3 - A nucleotide of DNA may contain. ribose, uracil,...Ch. 3 - The building blocks of nucleic acids are ____. a....Ch. 3 - How does the double helix structure of DNA support...Ch. 3 - Why are biological macromolecules considered...Ch. 3 - What role do electrons play in dehydration...Ch. 3 - Amino acids have the generic structure seen below,...Ch. 3 - Describe the similarities and differences between...Ch. 3 - Why is it impossible for humans to digest food...Ch. 3 - Draw the ketose and aldose forms of a...Ch. 3 - Explain at least three functions that lipids serve...Ch. 3 - Why have trans fats been banned from some...Ch. 3 - Why are fatty acids better than glycogen for...Ch. 3 - Part of cortisol’s role in the body involves...Ch. 3 - Explain what happens if even one amino acid is...Ch. 3 - Describe the differences in the four protein...Ch. 3 - Aquaporins are proteins embedded in the plasma...Ch. 3 - What are the structural differences between RNA...Ch. 3 - What are the four types of RNA and how do they...
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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
- Proteins associate with membranes in a number of different ways. identify them and outline their molecular basis.arrow_forwardGive at least 10 functions of protein and describe each function. Cite an example for each function if there are any.arrow_forwardProteins function in a variety of roles in the body. The 3 main categories are: Growth and Maintenance, Regulatory Roles, and Energy Production. Please provide 2 examples of Growth and Maintenance and 4 examples of Regulatory Rolesarrow_forward
- A novel technique for determining the which lipids make up a pure homogenous lipid membrane has been developed. The identity of the lipids is determined by heating the membrane to its melting point, recording the melting point, and then the tilt angle of a single pass alpha helix is measured. Explain briefly how this technique can identify that lipid the membrane is made of.arrow_forwardProteins are usually least soluble in water at their isoelectric points. Explain.arrow_forwardProtein folding is critical for function because the properties of a protein arise from its overall shape and the distribution within that shape of the various amino acid side-chains. Which of the following statements about protein three-dimensional structure are correct? 1) the folding pattern of a protein is ultimately determined by its amino acid sequence. 2) proteins tend to fold in such a way that the hydrophobic amino acids are buried in the interior, while hydrophilic amino acids are exposed at the surface. 3) the chemical interactions within a protein molecule that support its overall folded structure are mostly covalent C-C (carbon to carbon) bonds between amino acid side-chains. 4) the overall folding pattern/shape of a protein molecule is termed its primary structure. 5) during evolution, the three-dimensional structure of a protein is often more strongly conserved than its amino acid sequence. More than one answer might be rightarrow_forward
- Discuss the primary structure and/or unique amino acid composition, three-dimensional structure (with illustrations), and structure-function relationships in the following fibrous proteins. -alpha-keratin -Fibroin -Keratinarrow_forwardWhich of the following is true about the relative position of hydrophilic and hydrophobic amino acids in globular protein structures in aqueous solutions? Hydrophobic amino acids tend to be found in the core, while hydrophilic amino acids tend to be on the outer surface of proteins. Hydrophilic amino acids tend to be found in the core, while hydrophobic amino acids tend to be on the outer surface of proteins. There is an even distribution of hydrophobic and hydrophilic amino acids between the inner core and outer surface of proteins. There is no predictable distribution of hydrophilic and hydrophobic amino acids; it depends on the specific proteinarrow_forwardPhysical methods are often used to determine protein conformation. Describe how x-ray crystallography, cryo electron microscopy, and NMR spectroscopy can be used to determine the shapes of proteins. What are the advantages and disadvantages of each method? Which is better for small proteins? Large proteins? Huge macromolecular assemblies?arrow_forward
- Describe how a polypeptide can fold to become a functioning protein. Be sure to address the four levels of protein (folding or organization known as hierarchy of structure). In addition, describe three different jobs proteins can perform if the protein has the correct shape.arrow_forwardA protein’s shape depends partly on electrical attractions between charged or polarized groups in various regions of the protein. True or false?arrow_forwardAmino acid structure and composition: Assuming physiological pH conditions, draw the peptide backbone of a protein composed of four amino acids. The protein is a) overall positively charged b) capable of forming disulfide bond with another protein c) has two amino acid that can participate in hydrogen bond formation d) one peptide bond in cis conformation you must show the complete name, single letter abbreviation and structure of each amino acid. Make sure to highlight the peptide bond that is in cis conformationarrow_forward
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