Biology question and answers for December 24, 2023
- Q What is the most accurate way to measure the volume of an irregularly shaped object? drop it in a graduated cylinder with water in it and record the change of...
- Q Unlike minerals such as iron and calcium, protein is a macronutrient in the human diet. Why is protein a macronutrient?A.The human diet should be made up of mostly protein.B.The human...
- Q Which of the following best describes iron?It is important to the digestive system for the metabolism of fats.It is a part of hemoglobin which transports oxygen throughout the body.It is...
- Q As a scientist you were playing with carbohydrates in your lab. You noted that one of the compounds you were working with contained 5 carbon atoms. You knew right away...
- Q Which of the following correctly describe intermolecular bonds:They are stronger than ionic and covalent bondsThey are about the same strength as ionic and covalent bondsIt is impossible to compare intermolecular...
- Q Why are populations with high levels of genetic diversity more stable than populations with low levels of genetic diversity?A. Populations with high levels of genetic diversity are more likely to...
- Q The cardiovascular system of a newborn must be adjusted after the infant takes its first breath. Which of the following are true?The ductus arteriosus constricts and is converted to the...
- Q Select the correct answer from each drop-down menu. Proteins are macronutrients required for the function and regulation of all cells in the body. plant protein that provides the necessary ratios...
- Q Which one of the following statements about the electron transport chain is false?a) The ETC involves the transfer of electrons between proteins embedded in the inner membrane of the mitochondria.b)...
- Q Strong acids and strong bases do this when added to a solution:Dissociate (reak apart) completelyIncrease the acidity of the solutionmake the solution neutralDecrease the acidity of the solution
- Q Students were given four small bottles marked "A," "B," "C," and "D." They were told that each bottle contained one of the following solutions: HNO3, NaOH, AgNO3, and CaCl2. Their...
- Q Which of the following is true for all exergonic reactions? A The products have more total energy than the reactants. B The reaction proceeds with a net release of free...
- Q The Andromeda Galaxy is approximately 1.5 x 1012 solar mass. Based on the passage, what is likely true about the Andromeda Galaxy? The galaxy's mass is composed of stars,gas, and...
- Q Quaternary structure is the folding of the polypeptides and non-amino acid based groups into the final protein conformation.What type of bonding is least commonly involved in stabilizing the quaternary structure...
- Q switch on enzyme activity, while can switch off or reduce enzyme activity.activators; InhibitorsInhibitors; activators
- Q Which of the following serve as enzymes?carbohydrateslipidsnucleic acidsproteins
- Q When dissolved in water, acids release and bases release .hydrogen lons; hydroxyl Ionshydroxyl.lons: hydrogen Ions
- Q Chemical mechanisms that can turn off or reduce an enzyme areInhibitorsactivatorscentriolesvacuoles
- Q The universe tends to move to a state of entropy or
- Q When a protein is extracellular either secreted or trans-membrane, it has sugars attached to it (becoming a glycoprotein). The sugars attach mostly where?A. residues of D or EB. residues of...
- Q Why are the side chains of amino acids so important?They're not really important. All 20 amino acid is pretty similar in their properties.They're what the digestive system removes to use...
- Q Which of the following is a general feature of kinases? (13% answered correctly)A. NONE OF THESEB. The catalyzed reaction must be protected from waterC. ALL OF THESED. Kinases convert aldoses...
- Q Malonyl-CoA is synthesized in the cytosol by the enzyme with Acetyl-CoA carboxylase. Write a balanced equation that shows the overall reaction catalyzed by this enzyme. What is the mechanistic role...
- Q Neurotransmitter Shazam is made from a precursor molecule Sha by an enzyme called Zam. A new drug AntiZam inhibits the of action Zam. AntiZam is a Shazam ...
- Q What blood type do you have if there is:NO A antigenYES B antigenNO Rh antigenA+A-B+B-
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