Cytoskeleton Study guides, Class notes & Summaries

In an in vitro polymerization reaction of F-actin from its G-actinsubunits, there is a lag phase. What happens during this lag phase? A: F-actin is nucleated. B: F-actin reaches a steady state C: F-actin exchanges nucleotides D: F-actin hydrolyzes ATP E: F-actin undergoes treadmilling - ANSWER A: F-actin is nucleated. 3. How would you test whetheractin cytoskeleton promotes mitochondria fissionprocess? A: Prevent F-actin assembly and examine mitochondria dynamics by monitoring a GFP...

NURS 611 ADVANCED PATHOPHYSIOLOGY EXAM 1 ACTUAL EXAM TEST BANK COMPLETE 150+ QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES|A+ (MARYVILLE UNIVERSITY) What are Free Radicals or Reactive Oxygen Species? How do they cause damage? - Free radical: unpaired molecule; steals an electron from a healthy molecule. - Causes cellular damage and in excess can cause disease - Antioxidants give an electron to an unpaired molecule - Reactive oxygen species: highly reactive chemical molecules ...

which part of the plant provides the structural support and protection? correct answerscell wall which cell structure contains the cytoskeleton, cytosine, and the organelles? correct answerscytoplasm maintaining proper levels of vegetation is an example of which type of conversation? correct answerswatershed conservation which of the following is a benefit of weeds? correct answerssoil stabilization, habitat and feed for wildlife, adventitious roots system, all of the above which of ...

ati teas 7 biology section all cells contain DNA and RNA and can synthesize proteins. each cell consists of nucleic acids, cytoplasm, and cell membrane Life begins as a single cell whether by asexual or sexual reproduction cells are grouped together by tissues tissues are grouped together by organs Organs are grouped together in: systems an organism is a complete individual Cells can be classified as prokaryotic or eukaryotic ribosomes involved in synthesizing proteins from ...

Molecular and Cell Biology Test Bank LATEST WITH 400 REAL EXAM QUESTIONS AND CORRECT ANSWERS(VERIFIED ANSWERS)|AGRADE Sucrose - ANSWER- Beta-glucose + fructose; beta-glycosidic linkage Lactose - ANSWER- 2 (Beta-glucose); beta-glycosidic linkage What stereoisomer of amino acids are found in human proteins? - ANSWER- L-amino acids except glycine Glycine - ANSWER- Simplest AA, found every third position in collagen Proline - ANSWER- Hydroxylated in mature collagen in the rER Lysine -...

Three metabolic pathways are involved in the breakdown of glucose to CO2, H2O, and ATP. Of the three, which one occurs in the cytoplasm? - Answer-true Which of the nitrogenous bases is part of DNA, but not RNA? - Answer-thymine Which phase of mitotic cell division is represented by this picture? - Answer-prophase A DNA strand with a base sequence of ACTTCGCATG, when replicated, would yield a newly formed strand of the same base sequence. - Answer-false Which of the following would NOT be a...

plasma membrane - The membrane at the boundary of every cell that acts as a selective barrier, thereby regulating the cell's chemical composition. Ribosomes - complexes that make proteins; free in cytosol or bound to rough ER or nuclear envelope Golgi apparatus - active in synthesis, modification, sorting, and secretion of cell products Lysosome - digestive organelle where macromolecules are hydrolyzed, and autophagy Mitachondrion - organelle where cellular respiration occurs and most ATP...

Which organelle performs autophagy? a) Proteasome b) cytoskeleton c) Ribosome d) Lysosome Lysosome Lysosomes can digest worn-out organelles and release the by products in the cytoplasm. (autophagy=self digestion) -Proteasome degrades malfunctioning/ misfolded proteins to peptides -Cytoskeleton maintains the shape and organization of cell contents -ribosome is large and translates mRNA to proteins Fe+ O2----->Fe203 a) Fe +o2-----> 2Fe2O3 b) Fe+3O2----->2Fe2O3 c) Fe+3O...

PATHOPHYSIOLOGY 9TH EDITION MCCANCE TEST BANK NEWEST ACTUAL TEST QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES|ALREADY GRADED A Chapter 1: Cellular Biology MULTIPLE CHOICE 1. Which statement best describes the cellular function of metabolic absorption? a. Cells can produce proteins. c. Cells can take in and use nutrients. b. Cells can secrete digestive enzymes. d. Cells can synthesize fats. ANS: C In metabolic absorption, all cells take in and use nutrients and other substan...

Monophyletic Group - Answer-includes all the descendants of a common ancestor, and its considered a natural grouping of organisms based on a shared ancestry. Paraphyletic Group - Answer-some (not all) of descendants of a common ancestor Polyphyletic Group - Answer-organisms from distinct lineages based on shared characters, but no common ancestor Homologies - Answer-similarities based on shared ancestry Analogies - Answer-similarities based on independent adaptations Synapomorphies - Answ...