Cell fractionation - Study guides, Class notes & Summaries

AQA A LEVEL BIOLOGY Paper 1 2024 What is the function of the cell membrane? - ANS To control what enters and leaves the cell, acts as a barrier between the cell and its environment. What structural feature of the cell membrane allows substances to enter/leave? - ANS Partially permeable What is the fluid mosaic model? - ANS States that a membrane is a fluid structure (because phospholipids are constantly moving) with a "mosaic" of various proteins embedded in it Describe the...

Phosphorus has an atomic number of 15. This tells us that... - Answer-there must be 15 protons True or False: covalent bonds are stronger than ionic and hydrogen bonds because atoms that are joined with covalent bonds share electrons - Answer-True An e- in a hydrogen atom exists in the first valence shell. The valence e- of Aluminum exist in the 3rd shell. Which valence shell e- have higher potential energy and why? - Answer-the valence e- of aluminum, bc higher e- shells have higher energy...

BIO 213 EXAM 3 GMU LATEST UPDATE 100% PASS active transport energy required Active transport moves substances across a concentration gradient, requires energy, involves uniporters, symporters, and antiporters Antoni Van Leeuwenhek discovered microbial world using a simple lens apical membrane faces the lumen of outside of the body Autocrine signals diffuse to and affect the cells that make them ex: is a tumor cell autophagy lysosomes digest cell material basolateral memb...

AS Biology (7401/1) Paper 1 Specimen Latest Update 01 . 1) Describe how you could use cell fractionation to isolate chloroplasts from leaf tissue. [3 marks] - ANSWER-1. How to break open cells and remove debris; 2. Solution is cold/isotonic/buffered; 3. Second pellet is chloroplast; 01 . 2) (Figure 1 shows a photograph of a chloroplast taken with an electron microscope. Figure 1) Name the parts of the chloroplast labelled A

ARRT BOARD EXAM QUESTIONS AND ANSWERS What is the TD 5/5 for the kidney? - ANS 23 Gy What would a QA level 1 action item require? - ANS Inspection, but treatment can continue What is the backscatter factor at the level of Dmax? - ANS Tissue Air Ratio (TAR) What technique can be used to accomplish forced shallow breathing? - ANS Gating What are the parts of the oral cavity? - ANS Floor of the mouth, retromolar trigone, gingiva, anterior 2/3 of tongue, hard palate ...

Biology 1406 Exam 2 Review (chapters 6,7,8) with 100% correct answersName the scientists who first studied cells and mention their contributions. - correct answer Robert Hooke: first person to view cells, first person to build a microscope. Antonie van Leeuwenhoek: first person to view living cells (bacteria, pond water) .Matthias Schleiden and Theodore Schwann (1830): proposed the cell theory (all living things are composed of cells) still true except for viruses. Who was the first scientist...

Iteroparous Species that reproduce multiple times during their lives (ex: humans, dogs, Semelparous Species that reproduce only once in their life, but may produce MANY offspring during that one, Iteroparity A survivorship pattern related to reproductive patterns; often typical of organisms whose survival chances increase once they reach maturity, Semelparity A survivorship pattern related to reproductive patterns; often typical of organisms with type 3 survivorship, Phylogeny a synonym for ...

BMTCN TEST C QUESTIONS AND ANSWERS 2024 GRADED A+ Myeloid progenitors give rise to which of the following types of cells during hematopoiesis? A. NK cells B. Plasma Cells C. Erythrocytes D. T lymphocytes Ans- D. T lymphocytes Myeloid progenitors give rise to erythrocytes Which of the following would be an optimal donor choice for a 26-year-old Caucasian male with acute myeloid leukemia? A. A 35-year-old mother of four B. A 30-year-old male with a body mass index of 25 C. The ...

Biology 1406 Exam 2 Review (chapters 6,7,8)Name the scientists who first studied cells and mention their contributions. - correct answer Robert Hooke: first person to view cells, first person to build a microscope. Antonie van Leeuwenhoek: first person to view living cells (bacteria, pond water) .Matthias Schleiden and Theodore Schwann (1830): proposed the cell theory (all living things are composed of cells) still true except for viruses. Who was the first scientist to view cells/build a mic...

CRO 2024 Final Exam 2 Study Guide Questions & Answers Where is the common site of metastasis after chemo-RT (2-year incidence) for patients with small cell lung cancer? - ANSWERSBrain metastasis (50-80% incidence) is a common site of relapse after chemo-RT What are the most important prognostic factors for a patient with small cell lung cancer? - ANSWERSstage, performance status What is the preferred fractionation and total dose administered for BID treatment of small cell lung cancer...