Biology, 2007, WASSCE/WAEC MAY/JUNE, Exam, Paper 1 | Objectives

Paper Info

Year :

2007

Title :

Biology

Exam :

WASSCE/WAEC MAY/JUNE

Paper 1 | Objectives

31 - 40 of 60 Questions

#	Question	Ans
31.	Enzymes can be inactivated by certain chemical substances in the body called A. catalysts B. inhibitors C. substrates D. activators Show Content Detailed Solution Enzyme inhibitors are substances which alter the catalytic action of the enzyme and consequently slow down, or in some cases, stop catalysis.	B
32.	What substances do X and Y represent? A. X = Maltose and Y = Sugar B. X = Starch and Y = Maltose C. X = Sugar and Y = Starch D. X = Maltose and Y = Starch	B
33.	Which of the following enzymes is not one of the main classes of enzymes? A. Sucrase B. Amylases C. Proteases D. Lipases	A
34.	Which of the following enzymes does not belong to proteases? A. Sucrase B. Pepsin C. Trypsin D. Erepsin	A
35.	Which of the following protozoans feeds parasitically A. Paramecium B. Chlamydomonas C. Plasmodium D. Euglena	C
36.	Which of the following features of the tadpole indicates that the animal is herbivorous? Possession of A. operculum B. muscular tail C. long coiled intestine D. internal gills	C
37.	The term community is defined as A. the different groups of plants and animals in the same area and interacting with each other B. the consumers and producers living in a habitat C. living organisms interacting with physical factors of an environment D. animals which mutually derive benefit from their association.	A
38.	Which of the following organisms are the producers in an aquatic habitat? A. Benthons B. Phytoplanktons C. Zooplanktons D. Nektons	B
39.	Wind speed is measured with A. a maximum-minimum thermometer B. a hygrometer C. a wet and dry bulb hygrometer D. an anemometer	D
40.	The amount of energy passed from one trophic level to the next decreases because A. many organisms are present at the first trophic level B. many organisms occur at the higher trophic level C. more energy is conserved at lower trophic levels D. parts of the organisms remain unutilised at each trophic level	D

31.	Enzymes can be inactivated by certain chemical substances in the body called A. catalysts B. inhibitors C. substrates D. activators Show Content Detailed Solution Enzyme inhibitors are substances which alter the catalytic action of the enzyme and consequently slow down, or in some cases, stop catalysis.	B
32.	What substances do X and Y represent? A. X = Maltose and Y = Sugar B. X = Starch and Y = Maltose C. X = Sugar and Y = Starch D. X = Maltose and Y = Starch	B
33.	Which of the following enzymes is not one of the main classes of enzymes? A. Sucrase B. Amylases C. Proteases D. Lipases	A
34.	Which of the following enzymes does not belong to proteases? A. Sucrase B. Pepsin C. Trypsin D. Erepsin	A
35.	Which of the following protozoans feeds parasitically A. Paramecium B. Chlamydomonas C. Plasmodium D. Euglena	C

36.	Which of the following features of the tadpole indicates that the animal is herbivorous? Possession of A. operculum B. muscular tail C. long coiled intestine D. internal gills	C
37.	The term community is defined as A. the different groups of plants and animals in the same area and interacting with each other B. the consumers and producers living in a habitat C. living organisms interacting with physical factors of an environment D. animals which mutually derive benefit from their association.	A
38.	Which of the following organisms are the producers in an aquatic habitat? A. Benthons B. Phytoplanktons C. Zooplanktons D. Nektons	B
39.	Wind speed is measured with A. a maximum-minimum thermometer B. a hygrometer C. a wet and dry bulb hygrometer D. an anemometer	D
40.	The amount of energy passed from one trophic level to the next decreases because A. many organisms are present at the first trophic level B. many organisms occur at the higher trophic level C. more energy is conserved at lower trophic levels D. parts of the organisms remain unutilised at each trophic level	D