CAX ASB unit 2 mcq for rbs and bills halves

 Which molecule is shown in the diagram?

• α-glucose

• β-glucose

• starch

•   sucrose

Which is a feature of cellulose molecules?

• contain peptide bonds

• contain α-glucose molecules

• form microfibrils

• are soluble

Which molecule contains magnesium ions?

• calcium pectate

• chlorophyll

• DNA

• starch

The biodiversity of this area of Bhitarkanika National Park could be measured by calculating species richness.

Which of the following describes species richness in Bhitarkanika National Park?

•   the number of animal species

• the number of plant species

• the number of organisms in each of the species

• the number of species

The scientist Carl Woese proposed the three-domain system of classification.

The photograph shows Haemanthus albiflos, a flowering plant native to South Africa.

 Which of the following is the domain for this plant?

• Archaea

• Bacteria

• Eukarya

• Prokaryota

All organisms contain one or more cells.

 In which of the following is a cell membrane present?

• animal cells only

• animal and plant cells only

• plant and prokaryotic cells only

• animal, plant and prokaryotic cells

In which of the following is a cell wall present?

• plant cells only

• animal and plant cells only

• plant and prokaryotic cells only

• animal, plant and prokaryotic cells

How many of the following statements about mature sclerenchyma fibres are correct?

1   they contain cellulose microfibrils

2   they contain pits

  3 they contain cytoplasm

• 0

• 1

• 2

• 3

The strawberry poison dart frog is found in parts of Nicaragua, Costa Rica and Panama only. This frog has several features that are adaptations to its environment.

Three of these features are:

1 bright red skin with black spots

2. production of a powerful poison that can cause paralysis

3. adhesive discs at the end of each toe.

 

 Which of the following is a term used to describe the fact that this frog is found only in these countries?

•   diversity

• endemic

• polygenic

• specific

All living organisms are made of cells.

Eukaryotic cells and prokaryotic cells have some features in common and some differences.

(a)  (i)  Which cells have a cell wall?

• plant cells only

• animal cells and prokaryotic cells

• plant cells and prokaryotic cells

• animal cells, plant cells and prokaryotic cells