BIOL 101 Concepts of Biology trail exam questions anad answers new solution 2021

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BIOL 101 Concepts of Biology trail exam questions anad answers new solution 2021 Attempt Score: 95 / 100 - 95 % AMINO ACIDS Question 1 (5 points)   Which of the following macromolecules a... re made from amino acids? Question 1 options:  proteins complex carbohydrates nucleic acids  lipids Question 2 (5 points)   Why are amino acids called “amino acids? Question 2 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 PROTEINS Question 3 (5 points)   What is the name of the chemical bond between amino acids? Question 3 options: phosphodiester hydrogen  peptide electronegative CARBOHYDRATES Question 4 (5 points)   Which of the following carbohydrates is used to store long-term energy in plant cells? Question 4 options: glucose  glycogen starch cellulose *- incorrect Question 5 (5 points)   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 Save LIPIDS Question 6 (5 points)   Fatty acids are a component of what type of macromolecule? Question 6 options:  lipids complex carbohydrates nucleic acids proteins NUCLEIC ACIDS Question 7 (5 points) Which of the following is not part of a nucleic acid? Question 7 options: pentose sugar nitrogenous base  fatty acid group phosphate group Save DENATURATION Question 8 (5 points) 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 Save PHOSPHOLIPIDS Question 9 (5 points) The inside of a phospholipid bilayer is: Question 9 options:  hydrophobic hydrophilic hypotonic hypertonic CELL MEMBRANES Question 10 (5 points) 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 Save COMPARING EUKARYOTES & PROKARYOTES Question 11 (5 points) Describe why eukaryotic cells being compartmentalized can make their metabolism more complex? Question 11 options: same chemical reactions can occur together more frequently different chemical reactions can occur all in the same place  different chemical reactions can occur in isolation of each other same chemical reactions can occur in isolation of each other Save Question 12 (5 points)   Which of the following does a prokaryotic cell have that an animal cell does not? Question 12 options: vacuole  cell wall ribosomes DNA EUKARYOTES Question 13 (5 points) Which of the following is not a component of the endomembrane system? Question 13 options:  mitochondria Golgi apparatus endoplasmic reticulum lysosome central vacuole Save OSMOSIS & DIFFUSION Question 14 (5 points) What is the diffusion of water through a selectively permeable membrane called? Question 14 options: pinocytosis facilitated diffusion active transport  osmosis  phagocytosis endocytosis Save Question 15 (5 points) If you place a blood cell in a beaker filled with a concentrated salt solution, what would likely happen?  Question 15 options: Water flows into the blood cell  Water flows out of the blood cell Salt flows out of the blood cell Equal amounts of water flows into and out of the blood cell ACTIVE TRANSPORT Question 16 (5 points) What is he 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)   What is the function of the nucleus in the eukaryotic cell? Question 17 options: protein synthesis  directs the synthesis of ribosomes and proteins organizing center of microtubules in animal cells digestion of macromolecules Save Question 18 (5 points)   In what type of cells would you expect to find a large amount of smooth endoplasmic reticulum? Question 18 options: brain  liver intestinal muscle ANTIBIOTICS AND PROKARYOTIC CELLS Question 19 (5 points)   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 19 options: nucleus cytoskeleton  plasma membrane  cell wall Save Question 20 (5 points)   You have a case of the common cold (which is caused by a virus). What would happen if you take antibiotics? Question 20 options: you will get better you will get another viral infection  nothing you will get worse [Show More]

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