Concept explainers
(a)
To determine: Two examples of enzymes with their importance and presence in the cell.
Introduction: Enzymes are specific proteins which function as catalysts to perform special reactions in the body. Enzymes can alter the
(b)
To determine Two examples of structural proteins with their importance and presence in the cell.
Introduction: Structural proteins help in maintaining the structure of membranes responsible for performing different functions in the body. Most of the structural proteins are fibrous in nature.
(c)
To determine Two examples of motility proteins with their importance and presence in the cell.
Introduction: Motility proteins are responsible for locomotion and movement in the body. Motility proteins help in the process of contraction and relaxation of muscles. Motility proteins also help in the transport of substances within the cell.
(d)
To determine Two examples of regulatory proteins with their importance and presence in the cell.
Introduction: Regulatory proteins form an important component of different systems of the body. These proteins help in regulating different types of movements contributing to the
(e)
To determine Two examples of transport proteins with their importance and presence in the cell.
Introduction: Transport proteins help in the transfer or movement of various products in and outside of the cell. Transport proteins require energy in the form of ATP (Adenosine Triphosphate) for the movement of substances.
(f)
To determine Two examples of receptor proteins with their importance and presence in the cell.
Introduction: Receptor proteins are present on the surface of different cells. These receptors help in acquiring the signal and generating a response either against or in favor of the cell.
(g)
To determine Two examples of defensive proteins with their importance and presence in the cell.
Introduction: Defensive proteins help in protecting the body from various infection and injuries. These proteins help in eliciting a strong defense response against the disease-causing microorganisms.
(h)
To determine: Two examples of storage proteins with their importance and presence in the cell.
Introduction: Storage proteins are the source of amino acids and metal ions which can be used by an organism in later stages of life. These proteins are important components of the cell which are generally used when the body is deficient in that particular protein.
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Check out a sample textbook solutionChapter 3 Solutions
Becker's World of the Cell (9th Edition)
- Select all that apply. The primary structure of a protein: is determined using NMR methods. can be determined as long as the peptide is not broken or denatured. is determined by cleaving the protein into smaller peptides. is its sequence of amino acids. is determined by combining overlapping peptide segments to obtain the sequence of the entire protein.arrow_forwardIdentify. Examine the following four amino acids (A-D): Co0 "H,N- CH "H,N CH "H;N-CH "H,N CH CH2 CH2 CH, CH CH2 CH3 CH, CH2 OH NH," B D What are their names, three-letter abbreviations, and one-letter symbols?arrow_forwardDescribe the three main classes of glycoproteins and explain their biochemical roles.arrow_forward
- Components of Complex Biomolecules Figure 1-10 (Lehninger's Biochemistry book) shows the major components of complex biomolecules. For each of the two important biomolecules below (shown in their ionized forms at physiological pH), identify the constituents. And show H-bonding with water. (a) Guanosine triphosphate (GTP), an energy-rich nucleotide that serves as a precursor to RNA: N- NH -CH2 0- NH2 H H H H. ОН ОН (b) Phosphatidylcholine, a component of many membranes: CH3 O- CH3*N-CH2-CH2-0-P-0–CH2 нн CH3 НС —О—С—(CH), —С—С— (CH), — СHз CH,–0-C-(CH,)14–CH3arrow_forward[Ten - Biomolecules] INSTRUCTIONS — Answer the following multiple-choice questions and EXPLAIN in 3-5 sentences why you chose that answer. — Answer properly Questions; Thomas was purifying an enzyme from a homogenate of muscle cells. He went through seven steps of purification and found that the enzyme activity was the same as the homogenate value. On the eighth step, when the protein washighly pure, the enzyme activity rose to five times that of the homogenate value. Can you suggest a possible reason? A. the homogenate assay was wrong B. step eight has co-purified an activator of the enzyme. C. the enzyme has an inhibitor present in the muscle cell homogenate D. the temperature at step eight was just right for the enzyme activity.arrow_forwardSolve only the specific amino acid number and percent (%) Difference. Thank you so much♥arrow_forward
- ESSAY TYPE. Briefly describe how monosaccharides like glucose and fructose assume or transform into its corresponding Haworth structure.arrow_forwardThe manufacture of chocolates containing a liquid center is an interesting application of enzyme engineering. The flavored liquid center consists largely of an aqueous solution of sugars rich in fructose to providesweetness. The technical dilemma is the following: the chocolate coating must be prepared by pouring hot melted chocolate over a solid (or almost solid) core, yet the final product must have a liquid, fructose-rich center. Suggest a way to solve this problem. (Hint: Sucrose is much less soluble than a mixture of glucose and fructose.)arrow_forwarda. Suppose that the R group of a histidine residue in a protein in its native tertiary structure is buried in the interior of the protein and is involved in a salt bridge (ionic interaction) with an oppositely charged residue. Unfolding the protein exposes both of the charged groups to water. Would you expect the pKa of the His R group (side chain) in the native protein to be a) higher or b) lower than the pKa of the same residue in the unfolded protein? Why? b. Is the exocyclic NH2 in cytosine acidic or basic? Why? NH, `N'arrow_forward
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