Biology
Biomolecules
When yeast are mixed with glucose in anaerobic environment, they produce ethyl alcohol and CO2 by anaerobic respiration. If you add an enzymatic activator to the reaction, you would expect that (more / less) CO2 will be produced. less A B same C. more
D. 11. Which of the following is NOT a function of proteins? a. store and transmit heredity b. help to fight disease c. control the rate of reactions and regulate cell d. build tissues such as bone and muscle processes
QUESTION 61 Ribulose has the following structural formula. To what carbohydrate class does ribulose belong? CH, OH 1 C=0 1 H-C-OH H-C-OH CH2-OH ketopentose ketohexose Oo oo ketotetrose aldotetrose aldopentose
QUESTION 38 Which of these compounds is the ester formed from the reaction of acetic acid and 1 -propanol? OH 1 CH3-CH2 – C -OH 0 -CH2-CH3 OH 1 CH3 - COH 1 O-CH2-CH2-CH3 O CH3 -C-0-CH2-CH2-CHz - o CH3 -CH-C-0-CH2-CH3 o CH3 -CH2-CH2-0-CH2-C-OH
Which of the following methods can be used to measure protein abundance? 1. Western blotting analysis 2. Absorption spectrophotometry (measure UV light absorbance at 280nm) 3. Bradford Assay 04. All of the answers are correct
Diabetes insipidus is different from diabetes melllitus because: Select one: O a. Di is caused by a lack of ADH, while DM is caused by a lack of insulin O b. DI occurs when the diabetic's urine contains so much water that it dilutes the glucose below measurable levels O c. Di refers to a particular case in DM in which the patient is becoming dehydrated
Question 43 At the end of glycolysis, glucose is broken down into 2 molecules of tricarboxylic acid acetyl-CoA fructose 1.6 bisphosphate pyruvate nicotinamide adenine dinucleotide Question 44 Which of the following are eukaryotes? animals archaea fungi bacteria plants
Question 23 2 pts Lysosomes and peroxisomes can be used to break down all of the following EXCEPT Lipids Carbohydrates Proteins Minerals Nucleic acids Question 24 2 pts At the end of meiosis, how many chromosomes are present in a normal, healthy daughter cell of a human? Enter a numerical value 23 action 25 2 pts
19. What determines the polarity or lack of polarity of an amino acid's R group? What is the significance of the chemical differences between amino acids' various R groups? 20. Name the three polysaccharides of glucose that were discussed in lecture, and say what the function of each is. Which one is not digestible by humans and and why not? 21. In just one sentence, describe the difference between a triglyceride and a phospholipid. 22. Define the term genetic code. If all living things on Earth share the same genetic code, how can we all be genetically different? 23. Name and briefly describe four roles or niches in the natural world, other than pathogenesis, that can be filled by bacteria.
11. A cell containing 4% cytoplasmic Ca2+ is placed in an aqueous solution containing 9% Ca2+. This cell is relative to its environment. a) hypertonic b) hypotonic c) acidic d) basic e) isotonic 12. In the above example, will cross the cell's membrane, with a net a) water...outward b) Ca2+...outward c) water...inward d) Ca2+...inward correct. movement. e) None of these is ions, but if it dissolves in 13. If a compound dissolves in water to make an acid, it must release water to make a base, it must release ions. a) Nat...cl b) H+...OH c) OH-...+ d) Kt...Nat e) Cl"...Na+
What are proteins needed for? 1 point Your answer How are peptide bonds made? * 1 point Your answer What is a carboxyl group? 1 point Your answer 2 points Which group of molecules are correctly labelled? * Lipids = saccharides; Carbohydrates saccharides; and Proteins = peptides Lipids = nucleic acids; Carbohydrates = saccaharides; and Proteins = amino acids = Lipids = triglycerides; Carbohydrates = saccharides; and Proteins = peptides Nucleic Acids = fatty acids; Carbohydrates saccharides; and Proteins = peptides = How are polymers broken down; 2 points explain? * Your answer
Buffer solutions function to minimize a change in pH when a strong acid or base is added. • Buffers usually consist of a solution containing a weak acid and aconjugale of that acid or a vegu aud and a salt of that acida base case - When a strong acid is added to a buffer solution, the buffer reacts to the acid, but the pH changes only slightly. Buffers help to protect contents of cells from excess acid or base. • The major plasma buffer contain:Carbonic acid and bicarbonade ion. - Bicarbonate ion acts as a base, neutralizing strong acid. - Carbonic acid can donate a proton, neutralizing base.
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