Study guides, Class notes & Summaries

1 Q P450 cytochromes are members of which family of oxidoreductase? A: Catalase B: Hydroperoxidase C: Oxidase D: Oxygenase A D: Oxygenase 2 Q Which of the following statements about the enzymes used in fructose metabolism is incorrect (or False)? A: Fructokinase phosphorylates Fructose from diet into Fructose 1-phosphate. B: Aldolase A hydrolyzes Fructose 1-phosphate into Dihydroxyacetone phosphate and Dglyceraldehyde. C: Thiokinase phosphorylates D-Glyceraldehyde into Glyceraldeh...

1 Q The enzyme Aldehyde dehydrogenase carries out which of the following reactions? Select one: a. Oxidation of aldehyde to acid b. Reduction of aldehyde to alcohol A a. Oxidation of aldehyde to acid 2 Q Which of the following statements is False? Select one: a. Oxidases uses atmospheric oxygen for oxidation reactions Incorrect b. Dehydrogenases uses atmospheric oxygen for oxidation reactions c. Peroxidases hydrolyzes H2O2 to H2O d. Catalase hydrolyzes H2O2 to O2 and H2O A b. De...

1 Q 2. Identify the metabolite that does NOT serve as a precursor of a dietarily essential amino acid: A. Alpha-ketoglutarate B. 3-phosphoglycerate C. Glutamate D. Aspartate E. Histamine A E. Histamine Histamine is a catabolite, not a precursor, of histidine. 2 Q 4. Select the CORRECT answer: The first reaction in the degradation of most of the protein amino acids involves the participation of: A. NAD+ B. Thiamine pyrophosphate (TPP) C. Pyridoxal phosphate D. FAD E. NAD+ and TP...

1 Q A patient presents with blue sclera that results in an inability to form procollagen from pro-α chains. What disease does he have? A Osteogenesis imperfecta 2 Q List the four main phases of mitosis in order. A Prophase, metaphase, anaphase, and telophase 3 Q When does mitosis occur in the cell cycle? A Mitosis occurs after G2 and before G1 in the cell cycle 4 Q When does DNA synthesis occur in the cell cycle? A After G1 and before G2 in the cell cycle 5 Q

Your patient is a 65-year-old man with progressive fatigue. His fatigue started -7 months ago, and it is worsening; sometimes, he feels "too tired even to get out of bed". Over the last month, he has started having bone pain, and he has stopped his usual evening walks because of a decreased exercise tolerance. He has also noticed that he is sweating at night. At the same time, he has started having a feeling of abdominal fullness and early satiety; it is accompanied by a constant sen...

Cutting the dorsal root of a spinal nerve may result in: *A.* Hypotonia in skeletal muscles innervated by the cut root *B.* Fasciculations in skeletal muscles innervated by the cut root *C.* Reversed cutaneous reflexes in skin over the denervated muscle *D.* Anterograde degeneration of axons in the spinothalamic tract *E.* Loss of touch, vibration, and pressure sensations ipsilateral to and below the lesion ANS- A A neurological exam of your patient reveals a loss of vibratory sense in t...

1. Q Which of the following descriptions characterizes the symport transporter? Select one: a. One molecule being moved in one direction. b. Two molecules moved through in opposite directions. c. Two molecules moved through in one direction. d. None of these A c. Two molecules moved through in one direction. 2. Q Which of the following cation is present in a higher concentration in an intracellular fluid? Select one: a. Calcium b. Potassium A b. Potassium 2. Q When a molecule re...

Which serum marker is best measured in MI? a) first 8 hours b) 8–24 hours c) 2–7 days a) troponin b) CK–MB C) LDH–1 What is pleiotropy? A single gene mutation can have various phenotypic outcomes. E.g. RB gene#: retinoblastoma and osteosarcoma Where in the kidney can you find epithelial cells with a brush border? proximal tubule: enhances reabsorption Which 2 substances are present in a genotype male in early fetal life? TDF: testes differentation factor –> induces test...

Cause of ARDS on a histological level? ANS- Injury and inflam of alveolar pneumoncytes and pulmonary endothelium from neutrophils Glomerular biopsy shows mesangial expansion, glomerular BM thickening, glomerular sclerosis. If sclerosis is nodular and large it is a Kimmelstiel-Wilson lesion(hyaline deposits)? ANS- Long standing Diabetes Right hip radiograph shows mixed lysis and sclerosis with focal periosteal elevation and reactive new bone formation? ANS- Osteosarcoma Right hip...

A patient with suspected acute coronary syndromes (ACS) is placed on a cardiac monitor. The patient is complaining of dyspnea and is given supplemental oxygen. The provider determines that the oxygen is effective based on which SaO2 level? When a patient presents with potential ACS, the patient should have oxygen administered to maintain an SaO2 of at least 94%. A patient experiences cardiac arrest, and the resuscitation team initiates ventilations using a bag- valve-mask (BVM) resuscitato...