Which of the following proteins does not function in cell-cell interaction? a) Cadherin b) Cytochrome c c) Integrin d) N-CAM
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- Which of the following processes could be/are conducted by lysosomes? A) synthesis of mRNA B) Krebs cycle C) phagocytosis – the breakdown of ingested bacteria or autophagy-the breakdown of damaged mitochondria inside the cell D) RNA synthesis E) all of these.Grisofulvin is an antifungal agent that affects: select the correct answer. a) the chitin cell wall structure b) ergosterol in the cell membrane c) the formation of the mitotic spindle in mitosis d) the 50s ribosomal subunit and thus protein synthesis e) mRNA synthesisIn both Prokaryotes and Eukaryotes, which of the following structures can cross cell membranes using the same protein channels as water? A) mRNA, B) triglycerides, C) large, non-polar molecules, D) DNA, E) gases (CO2 and O2) and small ions.
- Name the structure which is used to transfer macromolecules between the cytoplasm and nucleus.a) Microtubulesb) Nuclear poresc) Ciliad) CentriolesHemocytes are stem cells which become plasma cells of the white blood cell system. These cells specialize in producing a type of protein called antibodies. These antibodies attack viruses and bacteria. Such cells are A) synthesized by the ribosomes b) Synthesized in to the endoplasmic reticulum C) Transported by vesicles in to the golgi apparatus D) released by the golgi apparatus into the blood by exocytosis E) all of these steps occur?The process by which messenger RNA codes for the synthesis of a specific protein is called: a) replication b) transcription c) translation d) gene regulation Which statement is true about prokaryotes? A) they have no chromosomes b) they have chromosomes, but they are not membrane bound c) they have membrane bound chromosomes d) their chromosomes are made of RNA rather than DNA In a eukaryotic cell, most ATP is made in which location? A) nucleus b) mitochondria C) cytoplasm d) golgi apparatus
- There are certain cells that are multinucleated (having more than one nucleus). Which of the following is a possible explanation for this occurrence? A) The cell underwent repeated cytokinesis but no mitosis. B) The cell underwent repeated mitosis with simultaneous cytokinesis. C) The cell underwent repeated mitosis, but cytokinesis did not occur. D) The cell had multiple S phases before it entered mitosis.Which of these amino acids is NOT a common attachment point for sugars in glycoproteins? A) Gly b) Ser c) Thr d) Asn In I-cell disease defective proteins are mislabeled which should be delivered to which organelle? A) nucleus b) mitochondria c) rough endoplasmic reticulum d) lysosome A glycoprotein involved in red blood cell production is: a) hemagglutinin b) erythropoietin c) p-glycoprotein d) cytochrome cWhat do eukaryotic cells have that prokaryotic cells do not? A) Nucleus B) Cytoplasm C) Ribosomes D) DNA
- For which of the following apply: the extracellular space is eliminated here near the surface between two cells. A) Zonula adherens B)Zonula occluded C) Desmosome D) Gap junction E) HemidesmosomeIn some eukaryote organisms, myocytes are a type of stem cell that become Muscle cells. These cells filled with a protein called myosin. Such cell products are stored in cell structures that are formed from: A) the nucleus, B) from the smooth ER as vesicles, C) are engulfed into the cell by phagocytosis, D) are released from the cell by the process of Exocytosis, E) the lysosomes.8) What makes a liver cell a liver cell and not a brain cell? A) The fact that it is found in an organ known as the liver B) The cells next to the liver cell dictate its identity C) The specific genes that the liver cell contains D) The specific genes that the liver cell expresses 7) The membranes of mictochondria, chloroplasts, and bacteria do all of the following except A) Pump ions against concentration gradients B) Generate ATP C) Generate chemical gradients D) Catalyze the reaction of the krebs cycle