Biology Aim: My objective is to plan and conduct an experiment from which I should be able to draw a firm conclusion that will either prove or disprove any predictions I make. This essay aims to assess and investigate the effect of various solution concentrations on the activity of osmosis in plant tissue. Background scientific theory: Plants exchange gases (CO2 and O2) in maintaining vital respiratory
Premium Osmosis Concentration Cell wall
will have water and substances diffusing though it in and out. The direction‚ in which things diffuse‚ depends on the type of solution the egg is placed in. A hypertonic solution isa solution that is outside the cell and it has lower free water molecule concentration than cytosol. Water diffuses out of the cell and the cell shrinks. A hypotonic solution is a solution that is outside the cell and it has a higher free water molecule concentration than cytosol. The water diffuses into the cell and the
Premium Management Learning German language
LECTURE NOTES 1: Foundations of Biochemistry - 1 open ended and 5 MC Properties of living organisms - self-replication & self-assembly - sensing and resonding to changes in environment - define function for each component and regulation - Classification of organisms based on where they get their energy Phototrophs (take energy from sun light) Chemotrophs (take energy from food in environment) - organotrophs (bacteria) - not photosynthetic Biological 1) Cellular a. nucleus (eukaryotes)
Free Protein DNA Amino acid
heavier. This was because distilled water was hypotonic to the potato tissue‚ so that there was a net movement of water into the cell by osmosis. The weight of potato strips put in 10% sucrose solution increased only slightly because 10% sucrose solution was also hypotonic to the potato tissue‚ however the water potential difference between the sucrose solution and potato tissue was small. The potato strips put in 20% sucrose solution was hypertonic to the potato tissue. Therefore‚ more water molecules
Premium Water Osmosis Chemistry
Objectives for Lecture 9 Know the difference in resolution and magnification between light and electron microscopes. Understand the process of cell fractionation based on centrifugation and know what the purpose of cell fractionation is. Know what the differences in cell structure are between prokaryotic cells and eukaryotic cells Know that most eukaryotic cells are between 10-100 m in diameter‚ whereas most prokaryotic cells are about 1 m in diameter. Know the following terms‚ plasma
Premium Adenosine triphosphate Bacteria Enzyme
Topic 1 – Introduction 1. Definitions: anatomy‚ physiology‚ palpation‚ auscultation‚ percussion‚ homeostasis‚ negative feedback loop‚ positive feedback loop‚ intracellular fluid‚ extracellular fluid‚ interstitial fluid‚ anatomical position‚ supine position‚ prone position‚ (frontal or coronal‚ transverse‚ sagittal‚ midsagittal‚ parasagittal‚ oblique sections or planes)‚ cell‚ tissue‚ organ‚ organ system‚ serous membranes (distinguish between visceral and parietal layers)‚ pericardium‚ pleura‚ peritoneum
Free DNA Protein Cell
1. A saturated fat has one or more double bonds between the carbons in its fatty acid tail: A) True B) False Points Earned: 2.0/2.0 Correct Answer(s): False 2. This organelle keeps DNA from getting tangled in cytoplasmic machinery and isolates it from damaging reactions A) endoplasmic reticulum B) nucleus C) nucleolus D) golgi body Points Earned: 2.0/2.0 Correct Answer(s): B 3. A buffer protects cells against: A) changes in pH B) excessive weight gain C) salt D) heat
Premium Adenosine triphosphate DNA Cell
Biological Science Lesson 1 Zoology - branch of biology that deals with the life of animals. 1. Morphology - studies forms and structure of animals. a. Gross anatomy - performs surgical technique ; dissection (cutting up). b. Paleontology - studies pre-historic forms of animals through fossil. 2. Histology - study of tissues & organs‚ their structure‚ functions & composition at a microscopic level. 3. Cytology - study of the structure & function and its parts at microsopic level or
Free Cell Eukaryote
Enzymes All enzymes are globular proteins and round in shape They have the suffix "-ase" Intracellular enzymes are found inside the cell Extracellular enzymes act outside the cell (e.g. digestive enzymes) Enzymes are catalysts → speed up chemical reactions Reduce activation energy required to start a reaction between molecules Substrates (reactants) are converted into products Reaction may not take place in absence of enzymes (each enzyme has a specific catalytic action) Enzymes catalyse
Premium Enzyme Blood Cell
------------------------------------------------- Water and Electrolytes Water constitutes 50-55% of a woman’s body weight and 55-60% of man’s weight. Water gives structure and form to the body‚ helps maintain body temperature‚ and also creates the necessary environment for cell metabolism. There are two compartments of body water‚ extracellular and intracellular fluid. Extracellular fluid (ECF) is water found outside of cells. Making up approximately 20% of total body weight‚ the ECF consists
Premium Kidney Blood Electrolyte