define the term sensitivity biology igcse

Biology . Define the terms: Movement as an action by an organism or part of an organism causing a change of position or place; Respiration as the chemical reactions in cells that break down nutrient molecules and release energy for metabolism Movement: An action by an organism or part of an organism causing a change of position or place. spinal nerve spinal cord Fig. exam-mate is an exam preparation and exam builder tool, containing a bank of topical and yearly past papers. 8 | 15 | Definition. The CNS is the brain and the spinal cord, whereas the peripheral nervous system is the nerves and neurons which connect the CNS to the . Fig. [2] (b) Accommodation (focusing) is one of the functions of the eye. This blog is no longer updated as I've finished IGCSEs in 2012. :). Living organisms share characteristics such as the ability to move and reproduce. Cambridge IGCSE Biology - past paper questions and answers. Page 320 sensitivity training meaning: training to help people be more aware of the feelings and needs of others, for example by making…. Although we cannot detect it, there may be a volatile chemical in the silica gel which makes the woodlice move more rapidly. growth and sensitivity . 3 - Pesticides and herbicides- kill off weeds and bugs that are not wanted, allowing crops to grow larger and more rapidly. Term. 2 UCLES 2020 0970/42/O/N/20 1 (a) Sensitivity is one of the characteristics of life.The eye is one of the major sense organs of vertebrates. [2] (ii) Define the term sense organ. 2.1 (b) On Fig. Students will then use this knowledge to . 39 | Section 5, Chapters 28-29 photosynthesis, osmosis, fermentation. Coordination and Response. [4] (iii) Gravitropism enables plants to survive in their environment. Consider a measurement device that has a ± 1.0 volt input range and ± 4 counts of noise, if the A/D converter resolution is 2 12 the peak-to-peak sensitivity will be ± 4 counts x (2 ÷ 4096) or ± 1.9mV p-p. A clinostat is the only way that a unidirectional stimulus can be applied equally to all sides of a root or shoot and thus act as a control in tropism experiments. New to this edition: 30% new material including new chapters on Dendritic Development and Spine Morphogenesis, Chemical Senses, Cerebellum, Eye Movements, Circadian Timing, Sleep and Dreaming, and Consciousness Additional text boxes ... Section 6, Chapters 30-34 The ability to respond to a stimulus is called irritability and is a necessary condition for life. 1.1 is a diagram of an eye that is focusing on a distant object. It is not restricted to any one style or ideology. Here you will find the answers to the 'in-text' questions which occur in IGCSE Biology (2nd edition) and GCSE Biology (3rd edition) by D. G. Mackean, published by Hodder Education, London, UK. Booklet Question Paper 2 . b (i) Positively phototropic; shoots. Biology Questions and Answers. Which characteristic of living organisms is described by the following definition? RINGER. in body cells, A nuclear division giving rise to genetically identical cells, A reduction division in which the chromosome number is halved from diploid to haploid resulting in genetically different cells, The genetic make-up of an organism in terms of the alleles present, Having two identical alleles of a particular gene e.g TT or tt. think of a definition of the term species and to write it down on a piece of paper. I hope you find this useful! 1.1. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Pages: 2 Ask pairs then to work in fours to produce a better definition, and then in eights if the class is large. 2.1 use label lines and the following letters to show F a receptor in the skin G the neurone that transmits impulses to the spinal cord H the effector in this reflex arc. So, I've finished IGCSEs but I'm leaving my blogs open in hopes that they help people. DEFINITIONS-Biology Define the term catalyst as a substance that (IGCSE -2011 Syllabus) speeds up a chemical reaction and is not changed by the reaction Define the terms: • nutrition as taking in of nutrients which are organic Define enzymes as proteins that function as substances and mineral ions, containing raw biological catalysts materials or . This arrangement will have evolved over millions of years, becoming more obvious as the sense organs became more sophisticated. (i) Define the term sensitivity. Thank you so much, hope they help. "The reflex arc is the basis for protective involuntary actions. 0610/42 Biology - Question Paper March 2020 Author: CIE Keywords: Biology Created Date: 9/17/2019 9:21:44 AM . 2 Define the terms: • nutrition as taking in of nutrients which are organic substances and mineral Definition: Plants need cells that are just the right size and shape to replace a skeletal structure. Coordination and Response Revision Notes: 14.1) Nervous control in humans. More specifically, it is analyzing what will happen if one variable is changed. There are different types of living organisms including plants, animals, fungi, bacteria and protoctists. Accessory. Topic Coordination and Response . 2. 1. a The wasps appear to be attracted to the smell of food, particularly fruit and sugary substances. The edited book Pesticides - Toxic Aspects contains an overview of attractive researchers of pesticide toxicology that covers the hazardous effects of common chemical pesticide agents employed every day in our agricultural practices. Heterozygous individual will not be pure-breeding, An allele that is expressed if it is present, A recessive allele is only expressed when there is no dominant allele of the gene present, sex-linked characteristics are characteristics in which the gene responsible is located on a sex chromosome and that this makes it more common in one sex than in the other, variation is the differences between individuals of the same species, The inherited functional features of an organism that increase its fitness, The probability of an organism surviving and reproducing in the environment in which it is found, is the process, resulting from natural selection, by, shows the transfer of energy from one organism to the next, beginning with a producer, A food web is a network of interconnected food chains, An animal that gets its energy by eating plants, An animal that gets its energy by eating other animals, An organism that gets its energy from dead or waste organic material, the position of an organism in a food chain, food web, pyramid of numbers or pyramid of biomass, A group of organisms of one species, living in the same area, at the same time, All of the populations of different species in an ecosystem, A unit containing the community of organisms and their, Changing the genetic material of an organism by removing, changing or inserting individual genes, One which is produced as rapidly as it is removed from the environment so that it does not run out, development providing for the needs of an increasing human population without harming the environment. 1.1 is a diagram of an eye that is focusing on a distant object. 41 |. 5 | 6. Define the term sensitivity. Cells and organelles Worksheet Elegant Cell organelles Plant and Animal Cells | Chessmuseum Template Library. Note: This blog will no longer be updated, but I will read emails. Characteristics of Living Organisms. b In positive phototropism, the unidirectional stimulus of light could suppress the growth of the shoot on the illuminated side. ~Thank you. • Describe the characteristics of living organisms by defining the terms movement, respiration, sensitivity, growth, reproduction, excretion, nutrition Extended: • Define the terms movement, respiration, sensitivity, growth, excretion and nutrition - supplement 1.2 CONCEPT AND USE OF A CLASSIFICATION SYSTEM . Section 3, Chapters 18-20 Movement. Students can use it to access questions related to topics, while teachers can use the software during teaching and to make exam papers easily. August 25, 2019. Then ask a student A group of cells with similar structures, working together to perform a shared function. But how we decide whether something is living or non-living depends on 7 life processes.If something is living it will carry out the 7 life processes below. Respiration. [2] Fig. :)Note: This blog will no longer be updated as I finished IGCSEs in 2012. Your blog has been extremly helpful with my GCSE's! COBUILD Advanced English Dictionary. In your biology reference book, add the following terms and definitions: Definitions. 2. a The whole plant does not move. Tap again to see term . This second edition, complete with CD-ROM, continues to provide comprehensive, up-to-date coverage of the core and extended curriculum topics specified in the Cambridge IGCSE Biology syllabus. Modern machinery -makes growing and harvesting crops much faster and easier. Movement: An action by an organism or part of an organism causing a change of position or place. Cambridge IGCSE ™ BIOLOGY0610/42 . Ask pairs then to work in fours to produce a better definition, and then in eights if the class is large. 21 | A reflex arc is a rapid involuntary response resulting from nervous impulses initiated by a stimulus. A few incorrectly opted for breathing, indicating confusion between respiration and breathing. 3 | You could try reducing the size of the cut region, till you get to less than 1mm. 1 All commercial breeds of sheep belong to the species Ovis aries. 36 | 10 | 7 Sensitivity All living things are able to sense and respond to stimuli around them such as light, temperature, water, gravity and chemical substances.

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