Question

71) When amino acids forma peptide hond and water is formed, this is known as a) actually water is not formed b) hydration synthesis e) hydrolysis d) dehydration synthesis e) none of the above 72) Protein structure: a) define the protein function and can be changed by switching the order of amino acids b) is fundamentally based on the secondary protein structure c) can be defined on a total of three levels d) requires multiple polypeptides (quaternary level structure) e) bande 73) Factors that affect the rate of cell growth include temperature and pH. The molecules most likely affected by these variables are: a) enzymes b) RNA c) carbohydrates d) lipids e) none of the above 74) When bacteria can grow in the absence or presence of oxygen, with no preference, they are known as: a) facultative aerobes b) aerobes c) aerotolerant d) microcarophiles e) anaerobic 75) Bacteria that grow at very cold temperatures (even below freezing) are known as: a) Psychrotrophs b) Psychrophiles c) Thermophiles d) Mesophiles e) All of the above 76) The phases of cell growth proceed in the following order: a) Log. Lag, Stationary, Death, Decline b) Log. Lag, Stationary, Decline, Death e) Lag. Log. Stationary, Death, Decline d) Lag. Log. Stationary, Decline, Death

Answer 1

Answer: Dehydration synthesis

( During the formation of the peptide bonds in the amino acid, the water is formed and it is known as dehydration synthesis.)

Answer: Requires multiple polypeptide

( Protein has four levels of the structure and it requires multi polypeptide bonds)

Answer: RNA

( This is directly related to the temperature and pH as increased temperature denature RNA.)

Answer: Aerotolerant anaerobes

( These kinds of anaerobes doesn't depends upon the presence or absence of the oxygen.)