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MCQOPTIONS
This section includes 1528 Mcqs, each offering curated multiple-choice questions to sharpen your Grade9 knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
The nucleus must migrate to the cell center in vacuolated cells plants |
| A. | after telophase |
| B. | before anaphase |
| C. | before prophase |
| D. | after prophase |
| Answer» D. after prophase | |
| 52. |
The phases of mitosis does not includes division of |
| A. | cytoplasm |
| B. | mitochondria |
| C. | vacuoles |
| D. | nucleus |
| Answer» D. nucleus | |
| 53. |
The process of cell division in prokaryotic cells which is similar to mitosis is called |
| A. | diffusion |
| B. | primary fission |
| C. | binary fission |
| D. | active transport |
| Answer» D. active transport | |
| 54. |
The process by which haploid daughter cells are formed by the division of diploid cells is called |
| A. | binary fission |
| B. | meiosis |
| C. | mitosis |
| D. | cell regeneration |
| Answer» C. mitosis | |
| 55. |
The cell division of mitosis is considered as means of |
| A. | budding |
| B. | binary fission |
| C. | sexual reproduction |
| D. | asexual reproduction |
| Answer» E. | |
| 56. |
The categorization of enzymes is based on their |
| A. | sequence of amino acids |
| B. | working site |
| C. | size |
| D. | none of above |
| Answer» C. size | |
| 57. |
The organic cofactors that are tightly bound to the enzymes are classified as |
| A. | non-synthetic groups |
| B. | synthetic groups |
| C. | aesthetic groups |
| D. | prosthetic groups |
| Answer» E. | |
| 58. |
The state in which substrate molecules do not find any free active site is called |
| A. | denaturation |
| B. | maturation |
| C. | saturation |
| D. | instauration |
| Answer» D. instauration | |
| 59. |
The narrow range of pH at which enzymes works on their maximum rate is called |
| A. | unsaturated pH |
| B. | optimum pH |
| C. | natural pH |
| D. | saturated pH |
| Answer» C. natural pH | |
| 60. |
The specific temperature at which enzyme works at maximum rate is classified as |
| A. | solute temperature |
| B. | optimum temperature |
| C. | natural temperature |
| D. | solvent temperature |
| Answer» C. natural temperature | |
| 61. |
The number of chromosomes in each daughter cells are |
| A. | 58 |
| B. | 52 |
| C. | not equal |
| D. | equal |
| Answer» E. | |
| 62. |
The number of cells that are destroyed in adults by apoptosis are |
| A. | 20 to 35 billion cells |
| B. | 50 to 70 billion cells |
| C. | 10 to 20 billion cells |
| D. | 15 to 25 billion cells |
| Answer» C. 10 to 20 billion cells | |
| 63. |
The special enzymes are released during necrosis from |
| A. | lysosomes |
| B. | vacuoles |
| C. | cytoplasm |
| D. | Golgi bodies |
| Answer» B. vacuoles | |
| 64. |
The pair of homologous chromosomes is classified as |
| A. | tetravalent |
| B. | trivalent |
| C. | bivalent |
| D. | covalent |
| Answer» D. covalent | |
| 65. |
The abnormal separation of chromosomes is classified as |
| A. | diploid budding |
| B. | haploid budding |
| C. | non-disjunction |
| D. | disjunction |
| Answer» D. disjunction | |
| 66. |
In 1991 HJP project started to protect the Palas valley which is |
| A. | richest area of biodiversity |
| B. | most fertile area |
| C. | riches resources area |
| D. | hilly area |
| Answer» B. most fertile area | |
| 67. |
The number of kingdoms in which organisms are divided is |
| A. | five |
| B. | six |
| C. | seven |
| D. | four |
| Answer» B. six | |
| 68. |
The phylum name to which pea plant belongs is |
| A. | collembola |
| B. | megaloptera |
| C. | magnoliophyta |
| D. | hominidae |
| Answer» D. hominidae | |
| 69. |
According to Ernst Haeckel, the bacteria were included in |
| A. | kingdom kart |
| B. | kingdom algae |
| C. | kingdom Protista |
| D. | kingdom protozoa |
| Answer» D. kingdom protozoa | |
| 70. |
The term used by Edouard Chatton for describing plant and animal cells is |
| A. | gametophytes |
| B. | Eucariotique |
| C. | Procariotique |
| D. | sporophyte |
| Answer» C. Procariotique | |
| 71. |
In anaerobic respiration, the pyruvic acid is not oxidized completely and turns into |
| A. | ethane |
| B. | methyl alcohol |
| C. | methane |
| D. | ethyl alcohol |
| Answer» E. | |
| 72. |
The rate of photosynthesis increases with the increase in |
| A. | hydrogen |
| B. | nitrogen |
| C. | carbon dioxide |
| D. | oxygen |
| Answer» D. oxygen | |
| 73. |
The summarized details of dark reactions are also known as |
| A. | Daniel cycle |
| B. | Ernst cycle |
| C. | Calvin cycle |
| D. | Karl cycle |
| Answer» D. Karl cycle | |
| 74. |
The major source of energy to perform cellular functions such as exocytosis, endocytosis, movement, and transmission of nerve impulses is |
| A. | Adenosine Triphosphate (ATP) |
| B. | Flavin Adenine Dinucleotide (FAD) |
| C. | Adenosine monophosphate (AMP) |
| D. | none of above |
| Answer» B. Flavin Adenine Dinucleotide (FAD) | |
| 75. |
If the left-hand side of the chemical equation is ADP + water then the right-hand side of that chemical equation is equal to |
| A. | AMP + PI + energy |
| B. | APM + MI + energy |
| C. | BMP + BI + energy |
| D. | TDA + TI + energy |
| Answer» B. APM + MI + energy | |
| 76. |
Hypothesis should be a |
| A. | general statement only |
| B. | testable only |
| C. | query |
| D. | general statement and testable |
| Answer» E. | |
| 77. |
In the Italian word 'malaria', the "aria" means |
| A. | air |
| B. | food |
| C. | soil |
| D. | fire |
| Answer» B. food | |
| 78. |
The biological method ensures the data's |
| A. | quality |
| B. | quantity |
| C. | ratio |
| D. | reliability |
| Answer» B. quantity | |
| 79. |
The kind of theory in which testing goes on by suggesting new hypotheses is classified as |
| A. | productive theory |
| B. | deductive theory |
| C. | observatory theory |
| D. | reductive theory |
| Answer» B. deductive theory | |
| 80. |
The example of the proportion is |
| A. | m x n :: p x q |
| B. | m: n :: p : q |
| C. | m + n : p + q |
| D. | m - n : p - q |
| Answer» C. m + n : p + q | |
| 81. |
The xylem tissues are responsible for |
| A. | osmotic pressure |
| B. | secretion of water |
| C. | absorption of water |
| D. | transportation of water |
| Answer» E. | |
| 82. |
The color of chlorophyll is |
| A. | green |
| B. | yellow |
| C. | brown |
| D. | red |
| Answer» B. yellow | |
| 83. |
The flattened sacs that are present in the cell were discovered by |
| A. | Ernst Haeckel |
| B. | David Baltimore |
| C. | Camillo Golgi |
| D. | Rachel Carson |
| Answer» D. Rachel Carson | |
| 84. |
The kind of electron microscope which is used to study the internal structure of cells is |
| A. | scanning electron microscope |
| B. | transmission electron microscope |
| C. | light microscope |
| D. | compound microscope |
| Answer» C. light microscope | |
| 85. |
The organelles of eukaryotic cells that are bounded by cell membrane are |
| A. | mitochondria |
| B. | endoplasmic reticulum |
| C. | chloroplasts |
| D. | all of above |
| Answer» E. | |
| 86. |
The kind of molecules at which the enzymes act are classified as |
| A. | solutes |
| B. | concentrates |
| C. | nitrates |
| D. | substrates |
| Answer» E. | |
| 87. |
The model proposed by Emil Fischer is known as |
| A. | arrow and shield model |
| B. | deduction model |
| C. | induction model |
| D. | lock and key model |
| Answer» C. induction model | |
| 88. |
The model which states that specific shapes are possessed by substrate and enzyme is known as |
| A. | deduction model |
| B. | induction model |
| C. | lock and key model |
| D. | arrow and shield model |
| Answer» D. arrow and shield model | |
| 89. |
The regulators of enzymatic reactions are classified as |
| A. | activators only |
| B. | converters only |
| C. | inhibitors |
| D. | activators and converters |
| Answer» E. | |
| 90. |
The catalytic region in which a small portion of molecules are involved in catalysis is called |
| A. | duplication site |
| B. | absorption site |
| C. | active site |
| D. | inactive site |
| Answer» D. inactive site | |
| 91. |
The type of cellular organization in which many organisms do not undergo cellular division is called |
| A. | unicellular |
| B. | multicellular |
| C. | colonial |
| D. | groups |
| Answer» D. groups | |
| 92. |
Different organelles assemble to form a |
| A. | cell |
| B. | tissue |
| C. | molecules |
| D. | muscle |
| Answer» B. tissue | |
| 93. |
Each organelle has a specified |
| A. | shape |
| B. | function |
| C. | size |
| D. | mass |
| Answer» C. size | |
| 94. |
The changes in population occur due to change in |
| A. | biotic factors |
| B. | abiotic factors |
| C. | environmental factors |
| D. | none of above |
| Answer» C. environmental factors | |
| 95. |
Considering elements of nature, the elements that make 99% of the total mass present does not include |
| A. | hydrogen |
| B. | magnesium |
| C. | nitrogen |
| D. | oxygen |
| Answer» C. nitrogen | |
| 96. |
If the blood group of a person is A then the antibodies present in that person's blood is |
| A. | anti-B antibodies |
| B. | anti-A antibodies |
| C. | anti-O antibodies |
| D. | anti-OA antibodies |
| Answer» B. anti-A antibodies | |
| 97. |
The arteries that supply blood to gonads are |
| A. | intercostal arteries |
| B. | celiac arteries |
| C. | hepatic arteries |
| D. | gonadal arteries |
| Answer» E. | |
| 98. |
The kind of transpiration which occurs through the stomata in leaves is called |
| A. | phloem transpiration |
| B. | xylem transpiration |
| C. | stomatal transpiration |
| D. | guard transpiration |
| Answer» D. guard transpiration | |
| 99. |
The heart receives oxygenated blood from |
| A. | lungs |
| B. | liver |
| C. | kidneys |
| D. | body |
| Answer» B. liver | |
| 100. |
The blood group systems are discovered by scientist |
| A. | Thomas Cooley |
| B. | Karl Landsteiner |
| C. | Camillo Golgi |
| D. | Ernst Haeckel |
| Answer» C. Camillo Golgi | |