Centrosome - Guides d'étude, Notes de cours & Résumés

Abiogenesis - The process of life originating from inanimate (lifeless) matter by natural causes All forms of life grouped into these 3 domains - Archaea Bacteria Eukarya Amyloplasts - A type of leucoplast Colorless plastids that store starch, a product of photosynthesis Anaphase - Sister chromatids separate and move to opposite spindle poles Movement continues until the separated chromatids are now called daughter chromosomes Anchoring belts - form belts that run entirely around cells ...

USABO Open Exam 2024 | 100%Correct Answers Verified Latest 2024 Version. 1. Why is myelin important in the nervous system? A. It allows signals to travel faster along axons because depolarization occurs only at myelinated locations. B. It allows signals to travel faster along axons because depolarization occurs only at nonmyelinated locations. C. It bundles the dendrites of adjacent neurons together. D. It increases capacitance across the cell membrane, which helps electrical signals to le...

Anatomy and Physiology Exam #1 (Ch.1-4) Questions & Answers 2024 Microvilli - ANSWER-Membrane extensions containing microfilaments. Function: absorption of extracellular materials. Cilia - ANSWER-Long extensions used for movement of material over cell surface. Proteasomes - ANSWER-Hollow cylinders that breakdown and recycle damaged or abnormal intracellular proteins. Ribosomes - ANSWER-RNA + proteins. Function: Protein synthesis. Peroxisomes - ANSWER-Vesicles containing degradat...

What is the DNA -> RNA process? - RNA polymerase I creates a transcript. This is primary RNA with 5' cap and 3' with poly(a) site. Maturation of RNA includes cleaving at the poly(a) site and RNA splicing of introns to leave matureRNA. What is the mRNA to protein process? - Codons run through ribosome in 3 base pairs. A corresponding tRNA recognises 3 base pair and brings with it conjugate bases and an AA. This adds the relevant AA for every 3 base pair, creating a polypeptide. What is...

BIOD 210 Genetics Final Exam With Questions and Answers 100% Solved A nucleotide is made up of what 3 components? - answerphosphate group, pentose sugar (deoxyribose in DNA and ribose in RNA), and a nitrogenous base What nitrogenous bases are purines - answerAdenine and Guanine What nitrogenous bases are pyrimidines? - answercytosine, thymine, uracil How can you differentiate between purines and pyrimidines? - answerpurines are double- ringed while pyrimidines are single-ringed What are ...

BIOD 210 Genetics Final Exam With Questions and Answers 100% Solved A nucleotide is made up of what 3 components? - answerphosphate group, pentose sugar (deoxyribose in DNA and ribose in RNA), and a nitrogenous base What nitrogenous bases are purines - answerAdenine and Guanine What nitrogenous bases are pyrimidines? - answercytosine, thymine, uracil How can you differentiate between purines and pyrimidines? - answerpurines are double- ringed while pyrimidines are single-ringed What are ...

What are the primary modes of chemical signaling? (5) :~~ paracrine, horemonal, neurohormonal, neurotransmitter, contactdependent What are the eight chief cellular functions? :~~ movement, conduction, absorption, secretion, excretion, respiration, reproduction and communication How does the starling law effect patient presentation? :~~ dehydration increases heartrate Does poor ventilation create metabolic acidosis or alkalosis? :~~ metabolic acidosis (caused by) What are chromosom...

Actin A globular protein that links into chains, two of which twist helically about each other, forming microfilaments (actin filaments) in muscle and other kinds of cells. Active transport The movement of a substance across a cell membrane, with an expenditure of energy, against its concentration or electrochemical gradient; mediated by specific transport proteins. Adenosine triphosphate (ATP) An adenine-containing nucleoside triphosphate that releases free energy when its phosphate bonds are...

Biology 1406 Exam 3 Questions and Answers Rated A+ Cell division is used for which of the following ? Reproduction of single-celled organisms, growth of multicellular organisms, repair and replacement of cells, and sperm and egg production Asexual and sexual reproduction differs in that sexual reproduction_____________ Can produce great variation among the offspring (Meiosis) Asexual Reproduction ____________ Produces offspring genetically identical to the parent (Mitosis) Mos...

Biology 1406 Exam 4 Study Guide Ch. 12-17 questions with complete solutionsWhat happens in the G1 phase? - correct answer Normal activities of the cell What happens in the S phase? - correct answer DNA is replicated What happens in G2 phase? - correct answer Preparation of the cell to undergo mitosis: copying organelles, making proteins and ATP, copying centrosome What happens in prophase? - correct answer A cell's genetic material condenses, a spindle starts to form, and the nuclear e...