Bio – Full Book

1

What is the correct order of taxonomic ranks from largest to smallest?

A Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species B Species, Genus, Family, Order, Class, Phylum, Kingdom, Domain C Kingdom, Domain, Phylum, Class, Order, Family, Genus, Species D Domain, Phylum, Kingdom, Class, Order, Family, Genus, Species

2

What are prosthetic groups?

A Organic cofactors that are tightly bound to enzymes B Inorganic ions that are loosely attached C Protein subunits of enzymes D Substrates that bind to enzymes

3

The female reproductive part of a flower is called:

A Androecium B Gynoecium C Calyx D Corolla

4

What is the process of copying DNA into mRNA called?

A Translation B Replication C Transcription D Mutation

5

In plant cells, what structure forms during cytokinesis?

A Cleavage furrow B Phragmoplast C Cell plate D Spindle fibers

6

In a bar chart representing the number of students who prefer different types of fruits, what does the height of each bar represent?

A The type of fruit B The number of students C The color of the fruit D The size of the fruit

7

Which of the following is a symptom of nitrogen deficiency in plants?

A Chlorosis (yellowing) of older leaves B Reddish spots on leaves C Death of growing points D Purple coloration of stems

8

The study of heredity and variation is known as:

A Genetics B Embryology C Palaeontology D Taxonomy

9

The large central vacuole in plant cells helps to maintain:

A Turgor pressure B Protein synthesis C Cell division D DNA replication

10

What is the function of a coenzyme?

A To break down enzymes B To assist enzymes in catalyzing reactions C To serve as a substrate D To inhibit enzyme activity

11

Which of the following is an example of a methanogen?

A Archaea that produce methane B Bacteria that cause disease C Fungi that decompose wood D Algae that produce oxygen

12

What is the significance of meiosis?

A It produces genetically identical cells B It maintains chromosome number across generations C It causes growth and repair D It results in diploid daughter cells

13

Lipids are made up of which two building blocks?

A Amino acids and glycerol B Glycerol and fatty acids C Monosaccharides and fatty acids D Nucleotides and glycerol

14

Which element is a component of the chlorophyll core?

A Iron B Magnesium C Calcium D Sulfur

15

Which of the following is NOT a branch of biology?

A Botany B Zoology C Geology D Microbiology

16

Which type of plastid gives colour to flowers and fruits?

A Chloroplast B Leucoplast C Chromoplast D Ribosome

17

In which organelle does photosynthesis take place?

A Mitochondria B Chloroplast C Nucleus D Ribosome

18

What is the monomer unit of proteins?

A Monosaccharides B Amino acids C Fatty acids D Nucleotides

19

What is the main significance of mitosis?

A Production of gametes B Genetic diversity C Growth and repair D Reduction of chromosome number

20

Which domain includes organisms with eukaryotic cells?

A Eukarya B Bacteria C Archaea D Protista

21

Which nitrogenous base is found in RNA but not in DNA?

A Adenine B Guanine C Cytosine D Uracil

22

Which of the following is NOT a major human organ?

A Heart B Lungs C Brain D Trachea

23

Which model of enzyme action was proposed by Daniel Koshland?

A Lock and key model B Induced fit model C Fluid mosaic model D Allosteric model

24

What is a benign tumor?

A A tumor that spreads to other parts of the body B A tumor that remains confined to its original location C A tumor that is always cancerous D A tumor that results from meiosis errors

25

Which of the following is a branch of biology that studies the classification of organisms?

A Taxonomy B Anatomy C Physiology D Genetics