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  • Biology Factsheet: 124. Saprobiontic and parasitic modes of life

    Biology Factsheet: 124. Saprobiontic and parasitic modes of life

    This Factsheet describes:  • saprobiontic and parasitic modes of nutrition, illustrated by the nutrition of Rhizopus and Taenia;  • the roles of saprobionts in the nitrogen and c...

    Price £3.00more info
  • Biology Factsheet: 125. Harvesting From a Natural Ecosystem - Fisheries

    Biology Factsheet: 125. Harvesting From a Natural Ecosystem - Fisheries

    Fish stocks are increased in two ways:  1. Birth of fish  2. Growth of fishFish stocks are decreased in two ways: Fish stocks are decreased in two ways: 1. Death of fish by natural means...

    Price £3.00more info
  • Biology Factsheet: 126. Natural vs Agricultural Ecosystems

    Biology Factsheet: 126. Natural vs Agricultural Ecosystems

    Our early ancestors were hunter-gatherers. Rather than attempt to grow their food in a particular place and organise their settlement at that place, they wandered, killing wild animals and collecting ...

    Price £3.00more info
  • Biology Factsheet: 127. Analysing Students’ Wrong Answers1: Ecology

    Biology Factsheet: 127. Analysing Students' Wrong Answers1: Ecology

    This Factsheet analyses students’ real answers to exam questions. Some of the students received an A grade, some received an E. We’ll look at how these two groups tackled the ecology quest...

    Price £3.00more info
  • Biology Factsheet: 128. Active Transport in Humans

    Biology Factsheet: 128. Active Transport in Humans

    Active transport is the movement of molecules or ions across a differentially permeable membrane up a concentration or electrochemical gradient. Active transport is not passive, it requires ATP. In fa...

    Price £3.00more info
  • Biology Factsheet: 129. ATP – What it is, what it does

    Biology Factsheet: 129. ATP – What it is, what it does

    ATP is a nucleotide composed of adenine ( a nitrogenous base), ribose (the  5-carbon or pentose sugar found in RNA) and three phosphate groups. ...

    Price £3.00more info
  • Biology Factsheet: 130. Investigating Catalase

    Biology Factsheet: 130. Investigating Catalase

    This Factsheet  • Outlines the importance of catalase;  • Describes how catalase can be used to investigate the general properties  of enzymes;  • Analyses commo...

    Price £3.00more info
  • Biology Factsheet: 131. Niches

    Biology Factsheet: 131. Niches

    Students often lose easy marks in ecology because definitions aren’t learned  properly. Perhaps this is because terms such as habitat and community are  in everyday use and students ...

    Price £3.00more info
  • Biology Factsheet: 132. Phloem

    Biology Factsheet: 132. Phloem

    This Factsheet describes the structure and function of phloem and  concentrates on typical exam questions such as:  1. Labelling xylem and phloem in ts root sections  2. Describing t...

    Price £3.00more info
  •  Biology Factsheet: 134. Cystic Fibrosis

    Biology Factsheet: 134. Cystic Fibrosis

      Cystic fibrosis(CF) is a common genetic disorder that occurs worldwide. It is the commonest inherited disease among white North Americans and Northern Europeans ...

    Price £3.00more info
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