Ib biology cell biology Study guides, Class notes & Summaries

IB Biology Review with Complete Solutions cell theory -All living things are composed of cells -cells come from preexisting cells -Cells are smallest unit of life Challenges to cell theory: muscle fibres -They are fused cells, so they're long and have multiple nucleus -challenges cells are autonomous units Challenges to cell theory: Giant algae -certain species may grow large -challenges idea cells are microscopic and larger organisms are composed of many Challenges ...

IB Biology Chapter 2 Latest 2024 Graded A+ Vitalism Idea that living organisms are fundamentally different from non living things Most frequently occurring elements Oxygen 65% Carbon 19% Hydrogen 10% Nitrogen 3% Other elements Calcium 1.5% Phosphorus 1% Iron 0.7% Sulfur 0.25% Sodium 0.15% Molecular biology Science that aims to explain living processes in terms of chemical substances Synthesis of urea Discovered in human urine in the 18th century Organic compound synt...

IB Biology Unit 1 Latest Update Graded A+ Cell theory 3 main principles All organisms are composed of one or more cells cells are the smallest units of life all cells come from pre-existing cells 7 functions of life (MR H GREN) metabolism reproduction homeostasis growth excretion response nutrition Paramecium unicellular membrane of the kingdom known as Protista. Look at powerpoint on isa247 to see how this organism displays the functions of life. chlorella single-cell...

GCSE COMBINED SCIENCE: TRILOGY 8464/B/1F Biology Paper 1F Version: 1.0 Final *JUN238464B1F01* IB/M/Jun23/E5 8464/B/1F For Examiner’s Use Question Mark 1 2 3 4 5 6 7 TOTAL Tuesday 16 May 2023 Morning Time allowed: 1 hour 15 minutes Materials For this paper you must have: • a ruler • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer al...

All IB Biology Processes Latest Update with Verified Solutions Stem Cell Therapy 1. triggering the differentiation of stem cells into desired cell type 2. surgical implantation of differentiated cells into patients tissue 3. suppression of immune system so they do not get destroyed 4. monitoring so they are not cancerous eg. Stagardt's Disease (old retina cells --> new retina cells) Leukemia (bone marrow transplant) Somatic cell nuclear transfer - creation of embryonic clones...

2023 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/1F Biology Paper 1F Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Materials For this paper you must have: • a ruler • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. • If you need extra space for your answer(s), use the lined pages at the end of th...

2023 AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/1F Biology Paper 1F Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Materials For this paper you must have: • a ruler • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. • If you need extra space for your answer(s), use the lined pages at the end of t...

IB Biology Paper 1 Questions And Answers Already Passed Prokaryote or Eukaryote in paramecium? Compartments in the cell indicates that it's a eukaryote Property of water which makes it suitable for living? Thermal Watson and Crick discovery about DNA DNA is double helix What occurs in meiosis but not in mitosis? Homologous chromosomes pair up Variation within a population Fertilization and mutation properties of stem cells they can differentiate phospholipid bilayer the...

2023 AQA GCSE BIOLOGY 8461/1H Paper 1 Higher Tier Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] GCSE BIOLOGY Higher Tier Paper 1H Tuesday 16 May 2023 Morning Time allowed: 1 hour 45 minutes Materials For this paper you must have: • a ruler • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. • I...

IB Biology Cell Structure Latest Version Graded A+ Nucleolus Structure: Darker spot within nucleus Function: Ribosomal RNA synthesis Nucleus Structure: Large spot within cell Function: Genetic material storage, controls cell processes Ribosomes Structure: Small spheres Function: Building proteins Vesicle Structure: Membrane bound container Function: Move material around Rough ER Structure: Folded, attached to nucleus, ribosomes attached Function: Proteins can be made lik...