Theory

CH18 - BIODIVERSITY, CLASSIFICATION AND CONSERVATION

(a) The table below gives some terms that are used in ecology and their definitions. Complete the table.termdefinitionecosystemall the organisms and t...

2009 Summer

Theory

CH18 - BIODIVERSITY, CLASSIFICATION AND CONSERVATION

(a) The African elephant, _Loxodonta africana_, is a large herbivorous mammal which eats tree leaves. It has the longest gestation period of any land ...

2009 Summer

Theory

CH18 - BIODIVERSITY, CLASSIFICATION AND CONSERVATION

(a) Explain what is meant by the term ecosystem..........................................................................................................

2009 Winter

Theory

CH18 - BIODIVERSITY, CLASSIFICATION AND CONSERVATION

(a) The squirrel monkey, _Saimiri sciureus_, of Costa Rica has become an endangered species.Fig. 1.1 shows a squirrel monkey.Explain what is meant by ...

2009 Winter

Theory

CH18 - BIODIVERSITY, CLASSIFICATION AND CONSERVATION

All living organisms are divided into five kingdoms. The table below lists some features possessed by living organisms and some processes that they ca...

2009 Winter

Theory

CH18 - BIODIVERSITY, CLASSIFICATION AND CONSERVATION

(a) Calculate the mean rate of decrease in the numbers of females nesting between 1993 and 2002. Show all the steps in your calculation. Answer..........

2010 Summer

Theory

CH18 - BIODIVERSITY, CLASSIFICATION AND CONSERVATION

The American crocodile, Crocodylus acutus, was classified as an endangered species by the USA in 1975. It is found in estuarine regions of southern Fl...

2010 Summer

Theory

CH18 - BIODIVERSITY, CLASSIFICATION AND CONSERVATION

The fruitfly, _Drosophila_, has many different species. Three of these species, _Drosophila pseudoobscura_, _D. persimilis_ and _D. miranda_, are thou...

2010 Summer

Theory

CH18 - BIODIVERSITY, CLASSIFICATION AND CONSERVATION

The American crocodile, Crocodylus acutus, was classified as an endangered species by the USA in 1975. It is found in estuarine regions of southern Fl...

2010 Summer

Theory

CH18 - BIODIVERSITY, CLASSIFICATION AND CONSERVATION

The fruitfly, \textit{Drosophila}, has many different species. Three of these species, \textit{Drosophila pseudoobscura}, \textit{D. persimilis} and \...

2010 Summer

MCQ

CH1 - CELL STRUCTURE

Which organelles are enclosed in a single phospholipid bilayer and contain hydrolytic enzymes?

2017 Summer

MCQ

CH1 - CELL STRUCTURE

The DNA of prokaryotes is naked and circular.Which statement describes how the DNA of eukaryotes differs from that of prokaryotes?

2017 Summer

MCQ

CH1 - CELL STRUCTURE

The recently discovered Pandoravirus measures 1000 nm in diameter.The Mimivirus has a diameter of 400 nm.What can be detected using a light microscope...

2017 Summer

MCQ

CH1 - CELL STRUCTURE

What are found in chloroplasts and mitochondria?1. DNA2. 70S ribosomes3. mRNA

2017 Summer

MCQ

CH1 - CELL STRUCTURE

Boiling the bones and teeth from dead animals can be used to produce a type of glue. The glue is formed from the collagen fibres present in bones and ...

2017 Summer

MCQ

CH1 - CELL STRUCTURE

What describes the primary structure of a protein?

2017 Summer

MCQ

CH2 - BIOLOGICAL MOLECULES

The diagrams show four monosaccharides with the formula $C_6H_{12}O_6$.Which diagram shows $\alpha$-glucose?

2017 Summer

MCQ

CH2 - BIOLOGICAL MOLECULES

Complete digestion of polysaccharides requires all the glycosidic bonds between the monomers to be broken.Amylase only breaks $\alpha$-1,4 glycosidic ...

2017 Summer

MCQ

CH2 - BIOLOGICAL MOLECULES

The diagram shows the results of tests on four solutions containing biological molecules. Which shows the solution that contains only starch and prote...

2017 Summer

MCQ

CH2 - BIOLOGICAL MOLECULES

The enzyme invertase catalyses the breakdown of sucrose to glucose and fructose.Three different enzyme inhibitors of invertase X, Y and Z were investi...

2017 Summer