BIOL 123 Exam 1 Attempt. 90.00 out of 100.00. Review Indicates all the Correct Answers

Exam 1: Attempt review 1 of 12Home / My courses / 20SPCMP BIO-123-20104 / Week 2 / Exam 1 Time taken 49 mins 3 secsGrade 90.00 out of 100.00What type of chemical reaction would be needed to convert a polypeptide into smaller subunits? Select one:a. a hydrophobic reactionb. an isomeric reactionc. a hydrophilic reactiond. a hydrolysis reaction !e. a dehydration reaction _ (blank) _ occurs when protein structure changes due to high heat. Select one:a. Denaturation !b. Saturationc. Synthesisd. Dehydratione. Hydrolysis Where is the site of lysosome production? Select one:a. nucleusb. rough endoplasmic reticulumc. smooth endoplasmic reticulumd. mitochondriae. Golgi apparatus ! Exam 1: Attempt review 19/04/2020, 18:37 2 of 12Question 4CorrectQuestion 5CorrectQuestion 6IncorrectQuestion 7Correct Why are fats and oils referred to as triglycerides? Select one:a. They have three glycerol moleculesb. They have three fatty acid molecules !c. They have three amino acidsd. They have three phospholipidse. They have three steroid groups Which structure would be prevalent inside cells that are producing many proteins? Select one:a. centriolesb. lysosomesc. ribosomes !d. mitochondriae. cytoskeletal fibers What is the most significant function of the Golgi apparatus? Select one:a. secreting proteinsb. transporting proteinsc. packaging proteins "d. synthesizing proteinse. lipid synthesis What type of molecule speeds up a reaction but is not consumed by that reaction? Select one:a. a glycerolb. an enzyme !c. a lipidd. a carbohydratee. a nucleic acidExam 1: Attempt review 19/04/2020, 18:37 3 of 12Question 8CorrectQuestion 9IncorrectQuestion 10Correcte. a nucleic acid What is the term for the semifluid interior of the cell? Select one:a. cytoplasm !b. cytoskeletonc. centrosomed. chromatine. centrioles Why does the molecule shown make plaques along the walls of blood vessels? Select one:a. it is hydrophillic and can trap dustb. it is hydrophobic and would not dissolve in blood fluidc. it is hydrophobic and can repel insectsd. it is hydrophillic and likes to stick to blood fluide. it is hydrophobic and serves as a waterproof barrier " Ions located in bones and teeth that are also important in muscle contractions and nerve conduction are _ (blank) _.Select one:a. sodiumb. chloridec. bicarbonated. potassiume. calcium ! Exam 1: Attempt review 19/04/2020, 18:37 4 of 12Question 11CorrectQuestion 12CorrectQuestion 13CorrectQuestion 14CorrectWhat process explains the unity and diversity of living organisms on our planet? Select one:a. taxonomyb. metabolismc. evolution !d. homeostasise. reproduction Which of the following is true of ATP? Select one:a. It is used for long term energy storageb. It has a base of adenine, the sugar ribose, and three phosphate groups !c. It contains adenine, ribose, and two phosphate groupsd. It has a base of adenine, the sugar deoxyribose, and three phosphate groupse. It is very stable) Where is the site for breakdown of engulfed bacteria, debris and macromolecules in an animal cell? Select one:a. peroxisomesb. rough endoplasmic reticulumc. lysosomes !d. mitochondriae. smooth endoplasmic reticulum What polysaccharide is used in plants for support? Select one:a. chitinb. glycogenc. collagend. cellulose !e. peptidoglycansExam 1: Attempt review 19/04/2020, 18:37 5 of 12Question 15CorrectQuestion 16CorrectQuestion 17CorrectQuestion 18Correct Which of the following molecules is more complex than a monosaccharide? Select one:a. sucrose !b. galactosec. deoxyribosed. glucosee. ribose All of the following are likely to be a function of proteins in living organisms except _ (blank) _. Select one:a. defenseb. supportc. metabolismd. transporte. long term energy storage ! What is true of humans?Select one:a. they are classified as protistsb. they are descended from apesc. they belong to the domain Archaead. they share a common ancestor with apes !e. they are prokaryotes What level of biological organization typically includes the smallest amount of biological material? Select one:a. ecosystemb. organismc. communityExam 1: Attempt review 19/04/2020, 18:37 6 of 12Question 19CorrectQuestion 20CorrectQuestion 21CorrectQuestion 22Incorrectd. organ !e. population What is the overall charge of the resulting oxygen atom if a neutral oxygen atom gains two electrons from another atom?Select one: a. +2 b. 0 c. -2 !d. unknown, as you need to know how many protons are presente. 2 more than its original mass number What form of glucose is used for short term storage in plants? Select one:a. chitinb. glycogenc. starch !d. peptidoglycanse. cellulose What is the result of unequal sharing of electrons between two atoms? Select one:a. a nonpolar molecule, such as methaneb. an ionic compound, such as saltc. an electronegative molecule, such as calcium iond. a hydrophobic molecule, such as fate. a polar molecule, such as water ! What diagnostic procedure could be done in order to determine if a patient has a thyroid tumor? Select one:Exam 1: Attempt review 19/04/2020, 18:37 7 of 12Question 23CorrectQuestion 24IncorrectSelect one:a. Patient drinks low levels of radioactive Iodine-131, then has an X-rayb. Patient drinks high levels of radioactive Iodine-131, then has a PET scanc. Injection of low levels of radioactive glucose, then patient has a PET scan "d. Injection of low levels of radioactive Thallium-201, then patient has a PET scane. Injection of high levels of radioactive glucose, then patient has an X-ray Using the animal cell diagram, identify the cell structure marked "e." Select one:a. lysosomeb. mitochondrionc. nucleusd. centrioles !e. nucleolus You are investigating a sample of pond water under the microscope and notice a unicellular organism with a nucleus and structures for photosynthesis. What kingdom does this organism belong to?Select one: a. Animals b. Plants c. Fungi d. Protistse. Archaea "Exam 1: Attempt review 19/04/2020, 18:37 8 of 12Question 25CorrectQuestion 26CorrectQuestion 27CorrectQuestion 28e. Archaea " What is true regarding the diagram above?Select one:a. two oxygen atoms interact to form one covalent bondb. two oxygen atoms interact to form two covalent bonds !c. two oxygen atoms interact to form four covalent bondsd. two oxygen atoms interact to form an ionic bonde. two oxygen atoms interact to form hydrogen bonds What is the correct order of the scientific method steps? Select one:a. conclusion, experiment, hypothesis, observationb. hypothesis, observation, experiment, conclusion c. observation, experiment, hypothesis, conclusion d. experiment, hypothesis, observation, conclusion e. observation, hypothesis, experiment, conclusion ! Which organelle is physically connected to the nuclear envelope? Select one:a. Golgi apparatusb. mitochondriac. endoplasmic reticulum !d. nucleoluse. lysosome What is the benefit of low levels of radioactive isotopes in a medicinal setting?Exam 1: Attempt review 19/04/2020, 18:37 9 of 12CorrectQuestion 29CorrectQuestion 30CorrectQuestion 31CorrectWhat is the benefit of low levels of radioactive isotopes in a medicinal setting? Select one:a. as tracers in imaging organs using Xrays and PET Scans !b. to reduce obesity and diabetes in teenagersc. to create drugs that work faster than normald. to destroy aging and unwanted cellse. to prevent ultraviolet damage from the sun What type of protein structure describes a linear sequence of amino acids? Select one:a. quaternaryb. primary !c. pleated sheetd. alpha helixe. tertiary A scientist who studies a group of porcupines all living in the same area would be studying _ (blank) _. Select one:a. a biosphereb. a speciesc. an ecosystemd. a population !e. a community What kind of interaction occurs between atoms of sodium and chlorine? Select one:a. The sodium atom gives up one protonb. The sodium atom gives up one neutron c. The chlorine atom gives up one neutron d. The chlorine atom gives up one electron e. The sodium atom gives up one electron ! Exam 1: Attempt review 19/04/2020, 18:37 10 of 12Question 32CorrectQuestion 33CorrectQuestion 34CorrectQuestion 35Correct Bacteria uses _ (blank) _ to strengthen its cell wall/ Select one:a. peptidoglycans !b. starchc. chitind. cellulosee. glycogen What is the term for a specific combination of bonded atoms which always react in the same way? Select one:a. a hydrophilic groupb. a hydrophobic groupc. an organic groupd. a functional group !e. a covalent group What level of protein structure is found in most enzymes and hemoglobin? Select one:a. dipeptideb. primaryc. tertiaryd. quaternary !e. secondary Why is sickle cell disease more common in Americans with African ancestors than Americans with European ancestors?Select one:a. Sickle-shaped blood cells caused malarial parasites to die, and thus gave protection against malarialinfections prevalent in Africa !b. Sickle-shaped blood cells were good hosts for tuberculosis, and thus spread tuberculosis widelythroughout AfricaExam 1: Attempt review 19/04/2020, 18:37 11 of 12Question 36CorrectQuestion 37CorrectQuestion 38Correctc. Sickle-shaped blood cells caused cholera bacteria to die, and thus gave protection against large-scalecholera epidemics throughout Europed. Sickle-shaped blood cells caused tuberculosis bacteria to die, and thus gave protection against largescale Tb epidemics throughout crowded areas in Africae. Sickle-shaped blood cells were good hosts for cholera bacteria, and thus caused many people to diefrom cholera and diarrhea Sickle-shaped blood cells caused malarial parasites to die, and thus gave protection against malarial infections prevalent in AfricaWhich of the following levels of taxonomy comprises the fewest number of organisms? Select one:a. Familyb. Class c. Order d. Phylum e. Genus ! GenusWhen ATP is broken down, it results in the release of _ (blank) _. Select one:a. glucoseb. frictionc. nerve impulsed. muscle contractione. energy ! A molecule from a new organism contains adenine, cytosine, guanine, and thymine. What molecules is being looked at?Select one: a. DNA ! b. RNA c. lipid d. proteine. carbohydrate DNAExam 1: Attempt review 19/04/2020, 18:37 12 of 12Question 39CorrectQuestion 40Correct DNAWhen added to a carbon chain which functional group will convert it into an alcohol molecule? Select one:a. sulfhydrylb. hydroxyl !c. phosphated. carboxyle. carbonyl hydroxylWhich of the following is the largest number describing an atom? Select one:a. Electron numberb. Neutron number c. Atomic number d. Proton number e. Mass number ! Mass number◀ Week 2 Critical Thinking Exercise Jump to... Exam 1 Essay Questions ▶︎