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

A student used a light microscope to observe a blood smear on a microscope slide.An eyepiece graticule was used to measure the diameter of a white blo...

2024 Spring

MCQ

CH1 - CELL STRUCTURE

Which statement explains why it is necessary to use an electron microscope to see the cristae of a mitochondrion?

2024 Spring

MCQ

CH1 - CELL STRUCTURE

Some stains can be used to identify cell structures in living cells.A dilute solution of one stain causes the whole cell to appear blue.The blue colou...

2024 Spring

MCQ

CH1 - CELL STRUCTURE

When mucus is secreted from a goblet cell, these events take place.1 addition of carbohydrate to protein2 fusion of a vesicle with the cell surface me...

2024 Spring

MCQ

CH1 - CELL STRUCTURE

The diagram shows four biological features. Which biological features are present in typical prokaryotes?

2024 Spring

MCQ

CH1 - CELL STRUCTURE

Which row shows features that occur in dicotyledonous plant cells and also in typical bacterial cells?key✓ = found in dicotyledonous plant cells and...

2024 Spring

MCQ

CH2 - BIOLOGICAL MOLECULES

Which flow chart outlining the test for non-reducing sugars is correct?

2024 Spring

MCQ

CH2 - BIOLOGICAL MOLECULES

Which diagrams show the release of a water molecule during the formation of a glycosidic bond?[Image_1: Shows three chemical diagrams each illustratin...

2024 Spring

MCQ

CH2 - BIOLOGICAL MOLECULES

Which molecules have a structural formula that contains C=O bonds? 1. amino acids 2. fatty acids 3. glycerol 4. protein

2024 Spring

MCQ

CH2 - BIOLOGICAL MOLECULES

Which statement about triglycerides is correct?

2024 Spring