Bio 172 Exam 1 Quizzes Flashcards _ Quizlet

12/18/23, 10:41 AM Bio 172 Exam 1 Quizzes Flashcards | Quizlet https://quizlet.com/530938745/bio-172-exam-1-quizzes-flash-cards/ 1/7 Try the fastest way to create flashcards Bio 172 Exam 1 Quizzes 12 studiers recently Leave the first rating Students also viewed Terms in this set (119) Quiz 5 Questions 16 terms rmeyer7 Preview Exam 1 Quiz Questions 168 terms rmeyer7 Preview Biological Membranes 23 terms Connor_Boland6 Preview signal Trans 11 terms katieann Which of the following is not considered to be alive? Mitochondrion Chordata are most closely related to echinodermata Regarding the tree of life, which of the following statements is correct? archaea are more closely related to eukarya than to bacteria Chemical bonds where electrons are shared equally are called non polar covalent bonds Elemental isotopes result from a change in the number of neutrons when one of the atoms involved in a covalent bond has a higher electronegativity than the other atom, what is possible about the molecule? the molecule will be able to make hydrogen bonds which answer is false concerning valence electrons they are in the lowest energy state Which of the following is not a domain of life? prokaryote Why are rRNA sequences good for studying probable evolutionary relationships of all life on the planet? all organisms on the planet have rRNA What contributes to cell theory? all cells contain DNA, share similar metabolic strategies, come from pre-existing cells, and are the smallest entities that have all the properties of life We use cookies on Quizlet as described in our Privacy Policy and Ads & Cookie Policy, including for security, analytics, advertising and marketing purposes. By clicking “ Got it ” or continuing to use Quizlet, you accept these uses. For more info, read our Ads & Cookie Policy. More Options Got it

12/18/23, 10:41 AM Bio 172 Exam 1 Quizzes Flashcards | Quizlet https://quizlet.com/530938745/bio-172-exam-1-quizzes-flash-cards/ 2/7 what is the most abundant element in human cells? carbon what is true concerning a property of water? water has a high specific heat index therefore water can absorb a great deal of heat resulting in only a small change in temperature hydrogen bonds can be formed in each of the following situations except: between cholesterol and a hydrocarbon chain in an animal membrane hydrogen bonds can be formed in each of the following situations -between nitrogenous bases in a double stranded DNA molecule -between water and ammonia (NH3) -between 2 amino acids in an alpha-helix -between 2 protein subunits interacting in a quaternary structure what domain do fungi belong to in the universal tree of life? eukarya the tree of life is based on a phylogenetic analysis of small subunit ribosomal RNA an acidic solution has a ___ concentration of protons and a ___ concentration of hydroxide ions high, low you are given 2 chemical bonds to examine, a C-H bond and a C-O bond. which of the following is true? the C-H bonds have more potential energy than C-O bonds high solubility of alcohol in water is due to the formation of hydrogen bonds; hydroxyl group in ethanol allows hydrogen and oxygen atoms in ethanol molecules to form hydrogen bonds with hydrogen and oxygen atoms of water molecules Champerones allow proteins to assume their proper three dimensional state the monomeric unit of a protein is a amino acid which of the following is FALSE regarding protein structure? Van der Waals forces occur between hydrophilic R-groups what is true regarding protein structure? -quaternary structure is characterized by bonding between R groups of two or more polypeptide chains -denaturation can affect secondary and tertiary structure -secondary structure is characterized by hydrogen bonding between the carbonyl and amide groups in the polypeptide -peptide bonds are poplar covalent bonds which of the following best summarizes the relationship between condensation reactions and hydrolysis reactions? condensation assembles polymers and hydrolysis breaks down polymers 20 different amino acids are found in the proteins of cells. What distinguishes these molecules? the composition of their side chains or R groups We use cookies on Quizlet as described in our Privacy Policy and Ads & Cookie Policy, including for security, analytics, advertising and marketing purposes. By clicking “ Got it ” or continuing to use Quizlet, you accept these uses. For more info, read our Ads & Cookie Policy.

12/18/23, 10:41 AM Bio 172 Exam 1 Quizzes Flashcards | Quizlet https://quizlet.com/530938745/bio-172-exam-1-quizzes-flash-cards/ 4/7 the second law of thermodynamics states that one usable form of energy cannot be completely converted into another usable form the energy of activation is the amount of energy required to reach a chemical reaction; transition state thermal energy is the kinetic energy of molecular motion, measured as heat when coal is burned to produce electricity, the electrical energy produces is less than the potential energy of the coal. why? some of the potential energy in the coal is converted into forms of energy other than electricity an important adaptation that psychrophilic (cold loving) enzymes might have is less rigid tertiary structure so that they maintain the flexibility to carry out their function when the temperature is lower than optimal for a particular enzyme, why does enzyme activity decrease? there are fewer collisions between enzyme and reactants; active site is no longer flexible enough to allow the reaction to proceed competitive inhibitors resemble substrate allosteric activators bind away from the active site, causing a conformational change in the active site which of the following would be most likely to destroy the primary structure of an enzyme hydrolysis HIV is a virus that requires the enzyme protease to complete its life cycle. Protease is inhibited by the drug Crixivan, which is chemically and structually similar to the substrate for protease. what is true of Crixivan? the effects of Crixivan are decreased by increasing the substrate concentration which of the following is false about an enzyme catalyzed reaction in the presence of a competitive inhibitor? inhibition is not affected by increasing substrate concentration which levels of protein organization is correctly paired with the interaction contributing to that protein structure? tertiary structure: Van der waals interactions between hydrophobic amino acids what is meant when a protein is denatured? when a protein unfolds the first law of thermodynamics states that energy cannot be created or destroyed. for living organisms, what is an important consequence? all living organisms must acquire the energy needed for life from their environment a chemical reaction that has a positive G is best described as endergonic We use cookies on Quizlet as described in our Privacy Policy and Ads & Cookie Policy, including for security, analytics, advertising and marketing purposes. By clicking “ Got it ” or continuing to use Quizlet, you accept these uses. For more info, read our Ads & Cookie Policy.

12/18/23, 10:41 AM Bio 172 Exam 1 Quizzes Flashcards | Quizlet https://quizlet.com/530938745/bio-172-exam-1-quizzes-flash-cards/ 5/7 if most chemical reactions are reversible, what is one way to ensure that the biochemical reactions in humans proceed in a forward direction? products of the reactions are quickly consumed by the next reaction which of the following is true of a catabolic reaction? it leads to increased entropy a hydrolysis reaction usually results in increased entropy you isolated an enzyme from an extremophile that lived in a 90C hot spring. which of the following is true about the enzyme? the enzyme would hav ea lower Km at 90C than 37C the chemical formula for a six carbon molecule is C6H12O6. what type of molecule is this? carbohydrate which of the following is not part of an RNA molecule? thymine what type of bond holds a T-A pair together in a DNA molecule? hydrogen which of the following is not a function of carbohydrates? catalysis which of the following is true regarding carbohydrates? glycogen and starch are composed of alpha glucose polymers you discover a new species of bacteria whose genome contains 30% cytosine. how much adenine does it contain? 20% occasionally a phospholipid will flip from one side of the membrane to another. why is this even rare? it is energetically unfavorable for the polar head group to traverse the hydrophobic interior of the membrane which of the following is true of nucleic acid molecules? in a double stranded DNA molecule purines hydrogen bond to pyrimidines molecules with both hydrophilic and hydrophobic regions are called amphipathic what is an appropriate way to describe the plasma membrane? selectively permeable, helps maintain homeostasis, fluid not rigid which of the following is not a component of an animal plasma membrane? cellulose which of the following is true of phospholipids? they are part of the cell membrane of bacteria We use cookies on Quizlet as described in our Privacy Policy and Ads & Cookie Policy, including for security, analytics, advertising and marketing purposes. By clicking “ Got it ” or continuing to use Quizlet, you accept these uses. For more info, read our Ads & Cookie Policy.

12/18/23, 10:41 AM Bio 172 Exam 1 Quizzes Flashcards | Quizlet https://quizlet.com/530938745/bio-172-exam-1-quizzes-flash-cards/ 7/7 which of the following is true regarding the Na+/K+ ATP dependent transporter? the transporter accepts a phosphate group when ATP is hydrolyzed, causing a conformational change of the pump which of the following is TRUE about facilitated diffusion? can involved the transport of water through an aquaporin which of the following is never found in bacterial cells? nucleus which eukaryotic organelle is responsible for protein sorting and modification? golgi apparatus which of the following organelles harnesses energy in a eukaryotic cell? mitochondrion which of the following is not part of mitochondria? thylakoid membrane which of the following is not part of the endomembrane system? mitochondrion which of the following is not true of proteins that get secreted from the cell? they are transported from the Golgi to the rough endoplasmic reticulum which of the following is true of proteins that get secreted from the cell? -they contain a signal sequence that directs them into the rough ER -they are transported through the endomembrane system in membrane bound transport vesicles -they are synthesized on ribosomes which of the following correctly pairs the organelle to its function Smooth ER; lipid and carbohydrate synthesis which of the following is true for both prokaryotes and eukaryotes? both use ribosomes to synthesize proteins We use cookies on Quizlet as described in our Privacy Policy and Ads & Cookie Policy, including for security, analytics, advertising and marketing purposes. By clicking “ Got it ” or continuing to use Quizlet, you accept these uses. For more info, read our Ads & Cookie Policy.