BIO Quiz 2 practice exam with verified answers answers new 2021 University of Maryland

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BIO Quiz 2 practice exam with verified answers answers new 2021 University of Maryland Question 1 (5 points)   Saved What is the name of the monomer that makes up proteins? Question 1 options: ... nucleotides amino acids disaccharides fatty acids Question 2 (5 points)   Saved Which of the following macromolecules are made from amino acids? Question 2 options: proteins complex carbohydrates nucleic acids  lipids PROTEINS Question 3 (5 points)   Saved What level of protein structure is associated with the sequence of amino acids? Question 3 options: primary secondary tertiary quaternary Previous PageNext Page Page 1 of 7 Submit Quiz6 of 20 questions saved Question 4 (5 points)   Saved Which of the following carbohydrates is used to store energy in animal cells? Question 4 options: glycogen hemi-cellulose cellulose starch Question 5 (5 points)   Saved How are most carbohydrates used in the human body? Question 5 options: used as building blocks for proteins used as catalysts for reactions in cells used as a source of energy used as building blocks for lipids  not necessary for regular bodily functions LIPIDS Question 6 (5 points)   Saved What type of molecule is shown here? Question 6 options: lipid nucleic acid carbohydrate protein Previous PageNext Page Page 2 of 7 Submit Quiz6 of 20 questions saved NUCLEIC ACIDS Question 7 (5 points)   Saved Where is most of the DNA found in the eukaryotic cell? Question 7 options: golgi mitochondria nucleus ribosomes DENATURATION Question 8 (5 points)   Saved Why does heating up a protein such as an enzyme cause it to lose function? Question 8 options: because it burns up because it loses its shape because it works best at low temperatures because it shows they are contaminated PHOSPHOLIPIDS Question 9 (5 points)   Saved What property of the phospholipid bilayer allows proteins to move laterally in the membrane? Question 9 options: phospholipid molecules are not covalently bonded to each other proteins attract each other with opposite charges phospholipids are attracted to each other by opposite charges phospholipids and proteins are attracted to each other Previous PageNext Page Page 3 of 7 Submit Quiz9 of 20 questions saved CELL MEMBRANES Question 10 (5 points)   Saved What is a characteristic of cell membranes? Question 10 options: dynamic impermeable static symmetrical COMPARING EUKARYOTES & PROKARYOTES Question 11 (5 points)   Saved Which of the following does a prokaryotic cell have that an animal cell does not? Question 11 options: ribosomes cell wall vacuole DNA Question 12 (5 points)   Saved Describe why eukaryotic cells being compartmentalized can make their metabolism more complex? Question 12 options: different chemical reactions can occur in isolation of each other different chemical reactions can occur all in the same place same chemical reactions can occur together more frequently same chemical reactions can occur in isolation of each other Previous PageNext Page Page 4 of 7 Submit Quiz12 of 20 questions saved Question 13 (5 points)   Saved Select the statement that is ***incorrect*** Question 13 options: Cells contain either DNA or RNA, never both Cell are the smallest living things  Most cells can divide to produce new cells All living organisms are composed of at least one cell All cells are either prokaryotic or eukaryotic OSMOSIS & DIFFUSION Question 14 (5 points)   Saved What is the diffusion of water through a selectively permeable membrane called? Question 14 options: pinocytosis facilitated diffusion active transport osmosis  phagocytosis endocytosis Question 15 (5 points)   Saved If you place a blood cell in a beaker filled with a concentrated salt solution, what would likely happen?  Question 15 options: Equal amounts of water flows into and out of the blood cell Salt flows out of the blood cell  Water flows into the blood cell Water flows out of the blood cell Previous PageNext Page Page 5 of 7 Submit Quiz15 of 20 questions saved Page 6 of 7 ACTIVE TRANSPORT Question 16 (5 points)   Saved What is the name of the process by which a cell will uptake large molecules from the extracellular fluid? Question 16 options: endocytosis active transport facilitated diffusion exocytosis EUKARYOTIC ORGANELLES Question 17 (5 points)   Saved What is the function of the peroxisome in the eukaryotic cell? Question 17 options: protein synthesis organizing center of microtubules in animal cells oxidizes and breaks down fatty acids and amino acids storage and transport ATP production Question 18 (5 points)   Saved In what type of cells would you expect to find a large amount of smooth endoplasmic reticulum? Question 18 options: brain liver intestinal muscle Previous PageNext Page Page 6 of 7 Submit Quiz18 of 20 questions saved ANTIBIOTICS AND PROKARYOTIC CELLS Question 19 (5 points)   Saved What is the concern with overuse of antibiotics? Question 19 options: the patient will become antibiotic resistant viruses will become antibiotic resistant.  bacteria will become antibiotic resistant. the antibiotics will degrade Question 20 (5 points)   Saving... Which is a plausible effect of taking oral antibiotics? Question 20 options: the antibiotics could unintentionally kill good bacteria living in your intestines, leaving you more susceptible to infection by pathogenic bacteria the antibiotics could harm your own body cells. the antibiotics could interfere with your body’s own ability to produce antibiotics, and actually end up prolonging the infection. the antibiotics could destroy viruses that have infected your body Previous PageNext Page Page 7 of 7 Submit Quiz19 of 20 questions saved f you place a blood cell in a beaker filled with a concentrated salt solution, what would likely happen?  Question options: Equal amounts of water flows into and out of the blood cell Salt flows out of the blood cell  Water flows into the blood cell Water flows out of the blood cell AMINO ACIDS Question 1 (5 points)   Saved Why are amino acids called “amino acids? Question 1 options: They are single molecules that contain both an amine group and a carboxylic acid group They are subunits of macromolecules that act as both strong acids and strong bases in solution They are acidic and were first discovered by an investigator called J. Aminov. They are subunits of macromolecules that act as  strong acids Question 2 (5 points)   Saved What is the name of the monomer that makes up proteins? Question 2 options: nucleotides amino acids disaccharides fatty acids PROTEINS Question 3 (5 points)   Saved What is the name of the chemical bond between amino acids? Question 3 options: phosphodiester hydrogen peptide electronegative Previous PageNext Page Page 1 of 7 Submit Quiz3 of 20 questions saved Question 4 (5 points)   Saved Which of the following carbohydrates is used to store long-term energy in plant cells? Question 4 options: glucose starch cellulose glycogen Question 5 (5 points)   Saved Which of the following is characterized as dietary fiber? Question 5 options: sucrose glycogen cellulose starch LIPIDS Question 6 (5 points)   Saved Fatty acids are a component of what type of macromolecule? Question 6 options: lipids complex carbohydrates nucleic acids proteins Previous PageNext Page Page 2 of 7 Submit Quiz6 of 20 questions saved NUCLEIC ACIDS Question 7 (5 points)   Saved Which of the following is not part of a nucleic acid? Question 7 options: pentose sugar nitrogenous base fatty acid group phosphate group DENATURATION Question 8 (5 points)   Saved Why does the egg white from raw eggs go from clear to white after it is cooked? Question 8 options: because the protein is denatured in raw egg white because the protein is denatured in cooked egg white because the peptide bonds existing between amino acids break in the raw eggs because the peptide bonds existing between amino acids break in the cooked eggs PHOSPHOLIPIDS Question 9 (5 points)   Saved Why do phospholipids spontaneously form a bilayer when mixed with water? Question 9 options: because they have an end that is polar and another that is non-polar because both ends are non polar because the polar tails come together in the inside  of the membrane because the polar head groups come together in the inside of the membrane Previous PageNext Page Page 3 of 7 Submit Quiz9 of 20 questions saved CELL MEMBRANES Question 10 (5 points)   Saving... A set of erythrocytes is placed in a beaker of 0.9% NaCl. Nothing appears to happen to the cells. Why? Question 10 options: 0.9% NaCl is hypertonic to the cells.  0.9% NaCl is isotonic to the cells  0.9% NaCl is hypotonic to the cells Sodium blocks the movement of water COMPARING EUKARYOTES & PROKARYOTES Question 11 (5 points)   Saved What is the difference between eukaryotic and prokaryotic cells? Question 11 options: eukaryotic cells are found in animals, while plant cells are comprised of prokaryotic cells. eukaryotic cells have a plasma membrane, which is lacking in prokaryotic cells. eukaryotic cells have a nucleoid region, which is lacking in prokaryotic cells. eukaryotic cells have membrane-enclosed organelles, which are lacking in prokaryotic cells. Question 12 (5 points)   Saved Which if the following are found in eukaryotic cells but not prokaryotic cells? Question 12 options: Golgi body vacuole DNA ribosome Previous PageNext Page Page 4 of 7 Submit Quiz11 of 20 questions saved EUKARYOTES Question 13 (5 points)   Saved Which of the following is not a component of the endomembrane system? Question 13 options: mitochondria Golgi apparatus endoplasmic reticulum lysosome central vacuole OSMOSIS & DIFFUSION Question 14 (5 points)   Saved What is osmosis? Question 14 options: A process that involves the movement of water A process that requires energy A process that occurs across a cell wall The movement of any molecule from high to low concentration Question 15 (5 points)   Saved If you place a blood cell in a beaker filled with pure water, what would likely happen?   Question 15 options: Water flows into the blood cell Water flows out of the blood cell Equal amounts of water flows into and out of the blood cell Equal amounts of solutes flow into and out of the blood cell Previous PageNext Page Page 5 of 7 Submit Quiz15 of 20 questions saved ACTIVE TRANSPORT Question 16 (5 points)   Saved Sodium ions are more highly concentrated outside the cell, in the extracellular fluid. Which process would be used to return any sodium ions that leaked into the cell back to the extracellular fluid? Question 16 options: osmosis active transport facilitated diffusion simple diffusion EUKARYOTIC ORGANELLES Question 17 (5 points)   Saved What is the function of the mitochondria in the eukaryotic cell? Question 17 options: protein synthesis directs the synthesis of ribosomes and proteins organizing center of microtubules in animal cells production of ATP, cellular respiration Question 18 (5 points)   Saved What is the function of the endoplasmic reticulum in the eukaryotic cells? Question 18 options: modifies proteins, synthesizes lipids. directs the synthesis of ribosomes and proteins organizing center of microtubules in animal cells synthesizes ATP, cellular respiration digestion of macromolecules Previous PageNext Page Page 6 of 7 Submit Quiz18 of 20 questions saved NTIBIOTICS AND PROKARYOTIC CELLS Question 19 (5 points)   Saved You have a case of the common cold (which is caused by a virus). What would happen if you take antibiotics? Question 19 options: you will get better you will get another viral infection nothing you will get worse Question 20 (5 points)   Saved An ideal antibiotic damages only bacterial cells but not human cells. Which of the following cellular structures would be a good target for antibiotics? Question 20 options: nucleus cytoskeleton  plasma membrane cell wall Previous PageNext Page Page 7 of 7 Submit Quiz20 of 20 questions saved Question 4 0 / 5 points eukaryotic cells have membrane-enclosed organelles, which are lacking in prokaryotic cells. EUKARYOTES OSMOSIS & DIFFUSION ACTIVE TRANSPORT EUKARYOTIC ORGANELLES ANTIBIOTICS AND PROKARYOTIC CELLS Attempt Score: 90 / 100 - 90 % [Show More]

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