Centrosomes - Study guides, Class notes & Summaries

Interphase - cell grows, performs its normal functions, and prepares for division; consists of G1, S, and G2 phases G1 phase - the cell grows in size and organelles double in size S phase - DNA replication ("S"= synthesize) G2 phase - cell growth, production of enzymes and other proteins two categories of mitosis - 1. karyokinesis (division of cell nucleus) 2. cytokinesis (division of cytoplasm) prophase - 1. chromatin condenses to form chromosomes; nuclear membrane and nucleoli ...

Test Bank for Cell Biology 4e 4th Edition by Thomas D. Pollard, William C. Earnshaw, Jennifer Lippincott-Schwartz, Graham Johnson. Full Chapters test bank are included - Chapter 1 to 48 SECTION I Introduction to Cell Biology 1 Cells as the Basis of Life on Earth 2 Evolution of Life on Earth SECTION II Chemical and Physical Background 3 Molecules: Structures and Dynamics 4 Biophysical Principles 5 Macromolecular Assembly 6 Research Strategies SECTION III Chromatin, Chromosomes, and ...

centrosomes - ANSWER -main place where cell microtubules are organized -only in animal cells -microtubules shoot out and are anchored to lysosomes - ANSWER -keep an acidic environment and used to degrade certain materials -digestion of the cell -in cytoplasm -only in animal cells vacuoles - ANSWER -storage unit for overflow -stores water, toxins, waste, food, nutrients

How is cell division possible in eukaryotes versus prokaryotes? - Answer-*Eukaryotes* - Mitosis - > somatic cells - Meiosis -> gametes *Prokaryotes* - Binary fission What is the outcome of Mitosis/Cytokinesis? - Answer-A parent cell is divided to create two identical daughter cells to the parent and each other (clones) What are the three functions of Mitosis? - Answer-1) Growth 2) Repair/ Replacement 3) Asexual Reproduction What is a chromosome? - Answer-- A structure carrying ge...

Purines and examples of them Purines contain two carbon-nitrogen rings and four nitrogen atoms. Adenine and guanine Pyrimidines and examples of them pyrimidines contain one carbon-nitrogen ring and two nitrogen atoms. Thymine and cytosine Structure of DNA DNA is a double helix (two helical strands.) The two strands are held together by the 'rungs', which are made of complementary pairs. The pairs are held together by weak hydrogen bonds. Arrangement of DNA antiparallel arrangement, ...

Meiosis lead to the production of ________. - Gametes Mitosis leads to the production of ________. - Somatic cells What are the functions of mitosis? - Growth, repair/replacement, and asexual reproduction in planaria. What is the G1 stage responsible for? - Cell growth, transcription/translation, duplication of organelles, and to prepare for DNA replication. What is the S phase of interphase responsible for? - DNA replication. It only occurs during this phase. What is the G2 phase...

BIO 115 FINAL (Barry) WVU LATEST VERSION GRADED A+ scientific theory an explanation for a very general class of phenomena or observations that are supported by a wide body of evidence hypothesis -must be testable -must be falsifiable -is a proposed explanation for an observation mitotic spindles come out of centrosomes kinetochore microtubules spindle fibers that attach to the kinetochore (center) of chromosome non-kinetochore microtubules spindle fibers that attach to sp...

10.1Q1 Define three stages of the cell cycle? Correct Answer-Interphase G0: where cells rest G1: where cells grow and expand S: where DNA is replicated G2: where cells repair damaged DNA and duplicate centrosomes Cell division (M) phase Where cells undergo nuclear and cytoplasmic division Each stage has checkpoints that check for completion and accuracy of previous step before starting the next one 10.2Q1 What are cyclin-dependent kinases (Cdks)? Correct Answer-Small family of pro...

Plasma Membrane:  Contain sterols  Passive/active transport: lack group translocation Nonmembraous Organelles:  Ribosomes  Cytoskeleton  Centrioles and centrosomes Nucleus: Genetic material  Nucleoplasm Mitochondria: powerhouse of the cell Inner Membrane: Cristae FUNGI:  Health care associated infections  Yeats infections/UTI  Can be beneficial  Food chain  Mycorrhizae  Provide food for humans  Chemoheterotrophs  Colony charac...

BIOD 101 Module 4 Portage Learning Exam With Complete Solutions Chromosomes - structures of packaged chromatin complexes Somatic cell - All of the body's cells except gametes Number of chromosomes in each somatic cell - 46 (23 pairs) Cell cycle - Process of parent cell replicating its genetic info and dividing into 2 new daughter cells cytokinesis - division of the cytoplasm interphase - G1, S, G2 phases. 90% of cycle time. Gap phase 1 - First phase, growth phase Messenger RNA (mR...