BIOL133 Exam1 Chapter 1-6 questions and answers docs

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BIOL133 Exam1 Chapter 1-6 questions and answers docs Part 1 of 1 - 91.25/ 100.0 Points Question 1 of 40 If sodium does not move down its gradient in the co-transport pump, what would be the outcome? 2... .5/ 2.5 Points Question 2 of 40 What protein is matched with its function? 2.5/ 2.5 Points the aid of ATP Question 3 of 40 NASA has discovered a lifeform on another planet! They have called you to help them 2.5/ 2.5 Points identify what kind of organism it is. Which features suggest that the lifeform is eukaryotic rather than prokaryotic? (Select all that apply.) Question 4 of 40 Noncompetitive inhibition occurs when 2.5/ 2.5 Points Question 5 of 40 What substance would have the slowest speed of passage across a selectively permeable membrane? 2.5/ 2.5 Points Question 6 of 40 What is an example of potential energy? Select all that apply. Question 7 of 40 What is the first step in Na -K pump? 2.5/ 2.5 Points 2.5/ 2.5 Points Question 8 of 40 NASA’s Kepler mission found evidence of several potentially habitable exoplanets, 2.5 / 2.5 Points raising the possibility that life may have evolved independently outside of our solar system. If NASA found a novel lifeform, we would expect it to use energy molecules based on similar principles as lifeforms on Earth. The organism would likely use molecules with bonds. It might use two separate molecules, one serving as a rapidly utilizable energy currency and another molecule serving as long-term energy storage Question 9 of 40 What protein is matched with its function? 2.5/ 2.5 Points Question 10 of 40 The fluid mosaic model describes membranes as fluid due to 2.5/ 2.5 Points Question 11 of 40 Which of the following form the foundation of plasma membranes? 2.5/ 2.5 Points Question 12 of 40 Molecules move from a high to low concentration in 0.0/ 2.5 Points Learning Objective Text: Understand the processes of osmosis and diffusion Question 13 of 40 Cardiac muscle requires junctions that allow electrical signals through. Cardiac 2.5/ 2.5 Points muscle also relies on calcium to contract. What junction is involved and what organelle stores calcium? Question 14 of 40 Decondensed chromatin is located within the 2.5/ 2.5 Points Question 15 of 40 In biological macromolecules like proteins, the hydrophobic residues tend to clump 2.5/ 2.5 Points together in the interior of the folded structure. What is the best explanation for why this occurs? . Question 16 of 40 What components are or can be present in cellular passive transport? Question 17 of 40 You and your roommate are grocery shopping. “I don’t get it,” she says. “My doctor 2.5/ 2.5 Points 2.5 / 2.5 Points said I should buy this special milk because I don’t digest it well. But this brand says ‘lactose-free’ and this brand says ‘lactase added’ – which do I want?” You reply: “The is a sugar in milk that you have trouble digesting, and is an enzyme that will digest it for you. Question 18 of 40 What examples describe the second law of thermodynamics? Select all that apply. . Question 19 of 40 What are actin filaments? 2.5/ 2.5 Points 2.5/ 2.5 Points Question 20 of 40 Why does water boil at a higher temperature than butter, which is non-polar? 2.5 / 2.5 Points Question 21 of 40 prevent material from moving in or out of the brain’s capillaries 2.5/ 2.5 Points Question 22 of 40 Hiking in the snowy woods, you peek inside a cave and encounter a hibernating 2.5/ 2.5 Points grizzly bear! Its metabolic rate seems to be very low. What do you predict is the predominant type of reaction occurring in this bear? Question 23 of 40 Baking soda can be swallowed to combine with excess hydrogen ions. Baking soda acts as a buffer. 2.5/ 2.5 Points Question 24 of 40 A tarantula has eight legs, an arachnid in the order Araneae. A grass spider has eight 2.5/ 2.5 Points legs, an arachnid in the order Araneaa. A mouse spider has eight legs, an arachnid in the order Araneae. There is a pattern. All organisms in this order have eight legs. This is Inductive reasoning Question 25 of 40 The R group interactions, β-pleated sheets and α-helix structure can be denatured, but what interaction relevant to structure cannot be denatured? 2.5/ 2.5 Points Question 26 of 40 The microbiologist Louis Pasteur invented pasteurization, created vaccines for 2.5 / 2.5 Points anthrax and rabies, and helped explain the germ theory of disease. He is often quoted as saying, “Chance favors the prepared mind.” A more accurate translation from the French, however, is “Where observation is concerned, chance favors only the prepared mind.” What can you conclude about Pasteur’s attitude about the role of chance in scientific discovery? Question 27 of 40 Breaking the phosphoanhydride bonds to power calcium transport pumps is an example of? 0.0 / 2.5 Points Learning Objective Text: Describe how energy is released through hydrolysis of ATP Question 28 of 40 C6H12O6 6O2 → 6H2O 6CO2 is an example of . 2.5 / 2.5 Points Question 29 of 40 If two solutions are different, the one will the higher concentration of solutes is 2.5 / 2.5 Points Question 30 of 40 2.5/ 2.5 Points Researchers are working to develop biofuels to free us from dependence on fossil fuels. Based on what you know about cellulose, what do you predict are the major advantage and disadvantage of using cellulose-rich plant material as biofuel? Question 31 of 40 are used for energy storage. 2.5/ 2.5 Points Question 32 of 40 Humans have been inhabiting earth for 200,000 years. Question 33 of 40 0.0/ 2.5 Points 2.5 / 2.5 Points Researchers are working to develop biofuels to free us from dependence on fossil fuels. Based on what you know about cellulose, what do you predict are the major advantage and disadvantage of using cellulose-rich plant material as biofuel? Question 34 of 40 Larger cells function less effectively because as they increase in size, the surface area to volume ratio . 2.5/ 2.5 Points Question 35 of 40 What is the function of cholesterol in plasma membranes? 2.5/ 2.5 Points Question 36 of 40 Which molecule(s) would dissolve in water based on polarity? Select all that apply. 1.25/ 2.5 Points Question 37 of 40 According to the 2nd law of thermodynamics, 2.5/ 2.5 Points Question 38 of 40 Indicate the statements that support the relationship between protein and structure. 2.5/ 2.5 Points Question 39 of 40 Cholera kills over 100,000 people each year worldwide due to diarrhea. The cholera 2.5 / 2.5 Points toxin opens the CFTR chloride channel in the intestines, so that sufferers lose chloride, sodium and massive amounts of water. On the other hand, the same CFTR channel is mutated in cystic fibrosis patients. With activity too LOW, they lack chloride flow and mucus builds up in the lungs. This illustrates the importance of precise control of channel opening, known as regulation. Question 40 of 40 To break chemical bonds to start a chemical reaction, energy is needed. 2.5/ 2.5 Points [Show More]

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