Biology question and answers for December 24, 2023
- Q How are fatty acids transported to the cells for B-oxidation?A. they are carried by albuminB. they are transported in LDL particlesC. they are only degraded in the liver and are...
- Q True or False: If you have high cholesterol, the doctor will prescribe the same medication and dosage to all people by using pharmacogenomics.A.)TrueB.)False
- Q Define 'Enthalpy'A. Energy stored in the movement of molecules in a substanceB. The temperature of a moleculeC. Energy stored in the chemical bonds in a substanceD. The opposite of temperature
- Q All enzymes are upregulated (working as best they can) all the time.TrueFalse
- Q If most chemical reactions are reversible, how do pathways like cellular respiration not run backwards?a) One product is needed before the next reactant is made.b) Enzymes are only active when...
- Q Enzymes, which are made of ________ will ________ the activation energy needed for a reaction to occur.
- Q What is the mechanism of action of the antimicrobials commonly known as sulfas (e.g. sulfonamideand trimethoprim)?inhibition of nucleic acids synthesisInhibition of protein synthesisInjury to the plasma membraneinhibition of metabolic pathwayInhibition...
- Q When a protein of interest is tagged with a fluorescent protein like GFP, what feature of this fusion protein must be considered and tested before interpreting any experimental results? List...
- Q Which combination of macromolecule and function is CORRECT?A A nucleic acids: provide structure and supportB carbohydrate: provide quick energy for the cellC lipid: speed up chemical reactionsD protein: store energy
- Q Some macromolecules are polymers. What is a polymer?a) A solution that consists of many moleculesb) A group of elements in matterc) Small molecules that act as building blocksd) A long...
- Q Amino acids are linked by a specific type of covalent bond. The reaction producing this bond also produces one water molecule. What type of bond links amino acids together in...
- Q Which of the following best describes the purine riboswitch?Guanine causes RNA to change conformation, producing a transcription terminator structure that removes RNA polymerase.Guanine causes the formation of a stem-loop terminator...
- Q Which ONE of the following has the greatest influence on the metabolic flux of a pathway in a cell?The involvement of an amphibolic intermediateThe standard free energy change of a...
- Q Explain how information about health risks can be used by someone who has had ancestry DNA testing by a company such as 23 and me or ancestry DNA? For example,...
- Q Terry sees an old rusty swing set at the park. He knows that rust is formed when iron (Fe) combines with oxygen (O) in the atmosphere to form iron oxide...
- Q Mario uses a hot plate to heat a beaker of 50mL of water. He used a thermometer to measure the temperature of the water. The water in the beaker began...
- Q Jamal is combining salt with water in order to determine its solubility. Henotices that after adding ten spoonfuls of salt, no more will dissolve intothe water. Which statement best explains...
- Q Which of the following correctly describes a property of an atom?It has more protons than neutrons.It has a negative or positive charge.It has an equal number of protons and electrons.It...
- Q Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr) are in the same column in the periodic table. Why are these elements in the same column...
- Q Using your knowledge of lipid structure and properties and any other scientifically reliable online or printed resources, create a 150-word explanation of how different types of dietary fat affect our...
- Q When a candle is lit, the wick burns, the wax melts, the candle changes shape, and the airaround the candle heats up. Which of the following is an example of...
- Q Q6: In the presence of arabinose, glucose affects expression of the ara operon. Record thename of the regulatory mechanism and briefly explain what happens in the presence of lowglucose and...
- Q 3. In ~100 words indicate the major sources of fat in your diet and characterizethem in terms of healthy and unhealthy.If your fat diet is not "heart-healthy," provide specific recommendations...
- Q Which of the following enzymes or chemical reagents will not cleave the following polypeptide (amino acids represented by their one letter code)?P-A-N-D-E-M-I-CTrypsinCyanogen bromideCarboxypeptidase BChymotrypsin
- Q On a sheet of paper, sketch a picture of a dehydration synthesis reaction between two amino acids.This is not meant to be tricky! Use Fig. 3.18 as a model. Be...
- Q When urine is to be cultured for bacteria, the specimen required is:a. preservedb. clean-catchc. randomd. first morninge. 24-hour
- Q Al(OH)3 (s) + H?SO4 (aq) ? Al2(SO4)3(aq) + H?O(l)Express your answer as a chemical equation. Identify all of the phases in your answer.
- Q A group of microbiologists is testing a water sample for level of lead. Test the claim that the watercontains level of lead higher than the safe guideline of 15 ppb.a)...
- Q Which statement below about DNA is FALSE?DNA is present in and essential for all living cells.DNA is located in the nucleus of eukaryotic cells.DNA is not always perfectly copied during...
- Q One strand of DNA has the sequence 5'-TCCG-3'. What is the sequence of thecomplementary strand? (Hint: It may help to make a sketch of the complementary strands,including bases and 5'3'...
- Q Which of the following reactions does not release energy? Group of answer choices combining CO2 and water to create glucose metabolizing glucose breaking a phosphate group off of an ATP...
- Q Which of the following would be categorised as a disincentive to consumption of sugar-sweetened beverages :Taxing sugar-sweetened beveragesRegulating floor and shelf space in supermarkets to limit space taken for sugar-sweetened...
- Q What are viral spikes? How do they aid in virulence or infection? How did viral spikes evolve? Describe the viral spike mutations for SARS-CoV2 and how it affects the new...
- Q What type(s) of nucleic acid is(are) involved in translation?Hint: Remember that ribosomes are composed of rRNA (ribosomal RNA) and proteinsrRNAtRNA and mRNArRNA, tRNA and mRNADNAall of the above
- Q Hypertonic (high salt) environment kill most of bacteria...by osmotic lysisby destroying the cell wallby inducing the entrance of water inside the cellby dehydating and shrinking the plasma membrane (plasmolysis)unless the...
- Q List and explain all the components necessary for protein translocation during energy production.
- Q A gram positive coccus nonendospore former catalase positive isE. coliStaphylococcusStreptococcusKlebsiella
- Q Signal amplification is essential for many signaling pathways, ensuring that a robust response can be induced by even a small amount of ligand. Does amplification occur at these two specific...
- Q If the original concentration for a reactant is 0.500 M, what is t1/2 if k is 0.00816 /M* min?58.7min7.94 min84.9 min245 min
- Q What kind of solid is C12H22O11?lonicMolecularCovalent NetworkAmorphousMetallic
- Q Which of the following statements about methods of protein sequencing is TRUE?All proteases remove one anino acid at a time from the end of the polypetide chain.Sequencing can be performed...
- Q The use of food energy to make heat rather than cellular energy is an example of non-shivering thermogenesis.shivering thermogenesis.evaporative cooling.torpor.acclimatization.
- Q Biology opinion: is aerobic cellular respiration is simply the reverse of photosynthesis? elaborate reasoning with valid arguments in terms of carbon cycling, electron and energy flow 500 words please type...
- Q Determine the correct sequence of events during the creation of recombinantDNA.1. Plasmid is cut open with enzymesII. Target gene is cut out with enzymesIII. Plasmid is inserted into the bacteriumIV....
- Q Which of the following is a clinical application of Kirby-Bauer Antibiotic Sensitivity Test?a. selecting the best chemotherapeutic drug for treating tumors. b. to reduce the nutritional requirements of harmful bacteriac....
- Q If a large clear zone is formed around an antibiotic disc placed on an agar plate, inoculated with bacteria. What does this indicate?a. The bacteria grow in an area on...
- Q Which of the following best describes the action of catalase?a. Catalase combines water and oxygen to produce hydrogen peroxide.b. Catalase enables oxygen to accept electrons at the end of the...
- Q Which of the following is the basis of most of the organic matter on our planet?carbohydratesnucleic acidssmall moleculesproteinslipids
- Q What is the function of carbohydrates?energy sourceSpeeds up chemical reactions and builds structures in the body.store genetic information
- Q What are some functions of lipids?Speeds up chemical reactions and builds structures in the body.store genetic informationLong-term energy storage and water-proofing
- Q "function in humoral immunity, while function in cell-mediated immunity.""T cells, B cells""B cells, T cells"Monocytes, Basophils""Basophils, T cells""B cells, neutrophils"
- Q Super-premium brands of ice cream have up to ______% milk fat.1020515
- Q Bran is not a good source of fiber and minerals.TrueFalse
- Q Gluten is formed from the combination of gliadin and glutenin.TrueFalse
- Q Which of the following is true regarding new prescription drug orders:a. they must be filled promptly unless otherwise indicatedb. they may be held until the Med Aide feels it is...
- Q Describe the classification of the R groups of the amino acids and provide an example of each class. What about the chemical nature of the R group puts them in...
- Q In biotechnology what is the role of a vector? Give me two examples of vectors.
- Q The Nile River is considered to be the longest river in the world. It is over 4,000 miles long. These sentences have been combined using an appositive phrase. Which sentence...
- Q What does Equiano think will happen to him when, as a child, he is brought on board the slave ship? A. He thinks he will be put in a cage....
- Q The tertiary structure of a protein refers toActive sites of enzymesFolding of chains due to amino acid interactionsThe number of amino acids in the proteinThe sequence of amino acids
- Q The formula P = 14.7e -0.21x gives the average atmospheric pressure, P, in pounds per square inch, at an altitude x, in miles above sea level. Find the average atmospheric...
- Q Each pH is logarithmically more or less than the one adjacent to it. What is the logarithmic difference between pH 10 and pH 5?
- Q This passage describes a chemical reaction. Read the passage. Then, answer the question below. Over 200,000 miles of train tracks have been built in the United States since the early...
- Q Which of the following refers the tertiary structure of a protein?1. The interactions between two polypeptide chains2. The sequence of the amino acids of a peptide chain3. The interactions between...
- Q Increasing temperature.has an unpredictable effect onhas no effect onaffectsecreasesincreasesthe rate of an enzymatic reaction.
- Q Which of the following are true due to the polarity of water?a) it is a good solvent for ions or other polar moleculesb) it allows water molecules to stick to...
- Q Which of the following is the best definition of an atom?A. A positively charged particleB. A negatively charged particleC. The basic unit of all living thingsD. The basic unit of...
- Q Use the following list of molecules to answer the following four questions.A. ProteinsB. CarbohydratesC. Nucleic acidsD LipidsE Steroids21. Includes molecules that function as cellular signals, receptors, enzymes, transporters, and carriers22....
- Q Lisa is working on a science project. Her task is to answer the question:"How do different brands of potting soil affect the growth rate of tomaccoplants?"Describe how Lisa would perform...
- Q The smaller the retention factor the more soluble an analyte is,TrueFalse
- Q 4. CSF stands for cerebrospinal fluid. This is the fluid which bathes the brain and spinal cord. Now, you are a doctor and you have a patient come into the...
- Q Which cellular event might occur because of changes in enzyme structure when a cell is exposed toabove-average temperatures?Cytoplasmic respiration would increase production of metabolic byproducts.Certain chemical reactions would stop functioning.Cellular...
- Q Some people are unable to digest cow's milk because their bodies cannot carry out the biochemical reaction to break down the sugar in the milk. These people's bodies lack a...
- Q Anabolic pathways build complicated molecules from simple ones. An example of anabolism would be:protein from amino acidspyruvate from glucosesugars from carbohydratescarbon dioxide from carbon and oxygen
- Q Which of the following statements about Van der Waals forces are incorrect?Dipole-dipole bonds are found between polar moleculesWater molecules are joined through hydrogen bondingLondon forces are the most common form...
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