mentation, what molecule is acting as a terminal electron acceptor a) lactic eth
ID: 281760 • Letter: M
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mentation, what molecule is acting as a terminal electron acceptor a) lactic ethanol c) pyruvic acid aerobic respiration of glucose, which could act as a terminal electron In 49. For an acceptor: a) H2O b) N2 c) S next 5 questions see structures on last page hich is a satuated fatty acid? hich is a trans-fatty acid? Which is a cis-fatty acid? 53. Which is a sterol? 54. Which is a triacylglycerol? In photosynthesis most photons are first absorbed by: a) reaction center chlorophyll b) the primary e- acceptor c) antennae chlorophyll d) none 56.O2 is a product of photosynthesis: a) it is terminal electron acceptor b) due to H pumping by chloroplasts c) H2O is oxidized by chlorophyll n reaction center II d) to offset the decreased entropy of photosynthesis 57. Which event will reduce the area of the plasma membrane to the greatest extent: a) pinocytosis c) exocytosis d) phagocytos Which event will increase the area of the plasma membrane to the greatest extent a) pinocytosis c) exocytosis d) phagocytosis The observation that most signals e.g.hormones, growth factors, paracrines, and autocrines cause biological effects without any signal internalization reflects: a) signal heterogeneity b) signal transduction c) receptor dimerization d) signal amplification 60. The observation that very small quantities of signals e.g hormones, growth factors paracrines, and autocrines cause large biological effects: a) signal heterogeneity b) signal transduction c) receptor dimerization d) signal amplification 61. Transcription is best described as information flow from: a) DNA DNA b) DNA>RNA c)RNA DNA d) DNA-Protein e) none of these 62. Translation is best described information flow from :a) DNA DNA b) DNA RNA c)RNA DNA d) DNA->Protein e) RNA->Protein 63. Replication is best described information flow from :a) DNA+DNA b) DNA RNA C)RNA->DNA d) DNA->Protein e) none of these 64. Base pairs of nucleotides are held together by: a) covalent bonds b) ionic bonds c) H-bonds d) hydrophobic interactions e) none of these 65. Which of the following is not a base pair in nucleic acids: a) A-T b) C-G c) A-U 66. An amino acid has a side chain of -CH2CH2NH2. This amino acid would classified 67.An amino acid has a side chain of -CH(CH3)2. This amino acid would be 68. The ribosome is the site of: a) transcription b) replication c) translation d) none d) purine-pyrimidine e) all are base pairs in nucleic acids as: a) polar b) nonpolar c) acidic d) basic a) hydrophobic b) hydrophilic c) acidic d) basic 69.For eukaryotic cells, replication occurs in the: a) cytoplasm b) ribosome c) nucleus d) mitochondria 70. Life first evolved in: a) A Hysteritic bloom b) postbiotic egnosium c) aqueous environment d) O2-dependent clostridiumExplanation / Answer
48. Answer: C) Pyruvic acid or pyruvate
Fermentation is the process that takes place in the absence of oxygen, where, organic molecules would be used as the final electron acceptor in the process. There would not be presence of the electron transport system. Lactic acidosis will be the end product, and thus will not be acting as the electron acceptor. NADH will be converted to NAD+ one reaction with pyruvate, to yield lactic acid.
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