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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.
| 951. |
The protein that made triplets of microtubules of centrioles is |
| A. | tubulin protein |
| B. | lignin protein |
| C. | granum protein |
| D. | actin protein |
| Answer» B. lignin protein | |
| 952. |
The concentration environment of guard cells during night time is called |
| A. | toning environment |
| B. | hypertonic environment |
| C. | hypotonic environment |
| D. | isotonic environment |
| Answer» D. isotonic environment | |
| 953. |
The pre-existing cells from which all living cells arise are |
| A. | Omis cellulose e cellular |
| B. | Omis cellulose e cellulose |
| C. | Omis cellula e cellulite |
| D. | Omis cellula e cellula |
| Answer» E. | |
| 954. |
The by-products formed during metabolism are |
| A. | stored in cell |
| B. | excreted out of cell |
| C. | mixed with blood |
| D. | stored in cell and excreted out of cell |
| Answer» E. | |
| 955. |
The smooth muscles, cardiac muscles, and skeletal muscles are classified as types of |
| A. | meristematic tissues |
| B. | epidermal tissues |
| C. | muscle tissues |
| D. | nervous tissues |
| Answer» D. nervous tissues | |
| 956. |
The branch of biology ' taxonomy' which deals with the study of |
| A. | structure and form of living organisms |
| B. | internal structures |
| C. | classification of organisms |
| D. | structures of cell organelles |
| Answer» D. structures of cell organelles | |
| 957. |
Biomolecules associate with each other to form |
| A. | organelle |
| B. | cells |
| C. | tissues |
| D. | compounds |
| Answer» B. cells | |
| 958. |
Logos in the word 'biology' stands for |
| A. | life |
| B. | water |
| C. | thought |
| D. | postulate |
| Answer» D. postulate | |
| 959. |
The branch of biology which deals with the study of animals is called |
| A. | zoology |
| B. | botany |
| C. | microbiology |
| D. | biotechnology |
| Answer» B. botany | |
| 960. |
The types of animal tissues include |
| A. | epidermal tissue |
| B. | muscular tissues |
| C. | synthetic tissues |
| D. | ground tissue |
| Answer» B. muscular tissues | |
| 961. |
The ADP is recombined with PI to form |
| A. | adenine monophosphate |
| B. | adenosine triphosphate |
| C. | ribose triphosphate |
| D. | adenine diphosphate |
| Answer» C. ribose triphosphate | |
| 962. |
The gain of electrons is known as |
| A. | oxidation |
| B. | reduction |
| C. | anabolism |
| D. | metabolism |
| Answer» C. anabolism | |
| 963. |
The reactions that occur in the first phase of photosynthesis are called |
| A. | light reactions |
| B. | heavy reactions |
| C. | adenine reactions |
| D. | ribose reactions |
| Answer» B. heavy reactions | |
| 964. |
The scientist Melvin Calvin was awarded the Nobel Prize in |
| A. | 1961 |
| B. | 1955 |
| C. | 1971 |
| D. | 1975 |
| Answer» B. 1955 | |
| 965. |
The organisms that get energy from anaerobic respiration are called |
| A. | anaerobes |
| B. | aerobes |
| C. | oxidized organisms |
| D. | none of above |
| Answer» B. aerobes | |
| 966. |
SEM stands for |
| A. | scanning electron microscope |
| B. | stimulating electron microscope |
| C. | sited electron microscope |
| D. | simulation electron microscope |
| Answer» B. stimulating electron microscope | |
| 967. |
The cell nucleus was discovered by Robert Brown in |
| A. | 1631 |
| B. | 1931 |
| C. | 1731 |
| D. | 1831 |
| Answer» E. | |
| 968. |
The ribosomes present in cells are considered as sites of |
| A. | oxygen synthesis |
| B. | protein synthesis |
| C. | carbon formation |
| D. | glucose synthesis |
| Answer» C. carbon formation | |
| 969. |
The network of interconnected channels that are extended to the nuclear envelope from the cell membrane is called |
| A. | stroma |
| B. | lignin |
| C. | endoplasmic reticulum |
| D. | granum |
| Answer» D. granum | |
| 970. |
The specialized structures of epidermal tissues for performing specific functions are |
| A. | stomata and root hairs |
| B. | root hairs and cortex |
| C. | vascular cambium and root hairs |
| D. | root cap and pith |
| Answer» B. root hairs and cortex | |
| 971. |
The enzyme-substrate complex is temporarily formed when the enzyme |
| A. | attaches with substrate |
| B. | separated from substrate |
| C. | attaches with molecules |
| D. | separated from molecules |
| Answer» B. separated from substrate | |
| 972. |
The high pH in which trypsin works is considered as |
| A. | acidic medium |
| B. | alkaline medium |
| C. | nuclear medium |
| D. | synthetic medium |
| Answer» C. nuclear medium | |
| 973. |
The enzymes of glycolysis that works in the cytoplasm are classified as |
| A. | intracellular enzymes |
| B. | extracellular enzymes |
| C. | intercellular enzymes |
| D. | transferrable enzymes |
| Answer» B. extracellular enzymes | |
| 974. |
The heat added into the activation energy provides |
| A. | kinetic energy to reaction |
| B. | thermal energy to reaction |
| C. | hydra energy to reaction |
| D. | potential energy to reaction |
| Answer» B. thermal energy to reaction | |
| 975. |
The coenzymes transport the chemical groups from |
| A. | roots to leaves |
| B. | stems to shoots |
| C. | one enzyme to other |
| D. | roots to shoots |
| Answer» D. roots to shoots | |
| 976. |
A unicellular organism having both characteristics of animals and plants includes |
| A. | euglena |
| B. | amoeba |
| C. | paramecium |
| D. | fungi |
| Answer» B. amoeba | |
| 977. |
Species are distributed in |
| A. | biochemistry |
| B. | biogeography |
| C. | biophysics |
| D. | biological hypothesis |
| Answer» C. biophysics | |
| 978. |
The Robert Whittaker proposed five-kingdom classification system in |
| A. | 1949 |
| B. | 1942 |
| C. | 1952 |
| D. | 1967 |
| Answer» E. | |
| 979. |
Considering five kingdoms, the simple multicellular and eukaryotic unicellular organisms are included in the |
| A. | kingdom algae |
| B. | kingdom Monera |
| C. | kingdom protozoa |
| D. | kingdom protista |
| Answer» E. | |
| 980. |
Considering kingdom Animalia of five kingdom classification, the organisms included in kingdom Animalia are |
| A. | unicellular herbivores |
| B. | unicellular producers |
| C. | eukaryotic multicellular consumers |
| D. | prokaryotic multicellular producers |
| Answer» D. prokaryotic multicellular producers | |
| 981. |
The scientist who described bacteria as "Procariotique" is |
| A. | Alexander Fleming |
| B. | Charles Darwin |
| C. | Margulis Chatton |
| D. | Edouard Chatton |
| Answer» E. | |
| 982. |
The organization which are working on the conservation of biodiversity includes |
| A. | The International Union for Conservation of Nature (IUCN) only |
| B. | World Wildlife Fund project (WWF-P) only |
| C. | world health organization (WHO) |
| D. | The International Union for Conservation of Nature (IUCN) and World Wildlife Fund project (WWF-P) |
| Answer» E. | |
| 983. |
Considering binomial nomenclature, the part of the name which never begins with a capital letter is |
| A. | generic name |
| B. | order name |
| C. | phylum name |
| D. | proper name |
| Answer» E. | |
| 984. |
The organisms that consist of multicellular sex organs forms |
| A. | endoplasmic reticulum |
| B. | embryos |
| C. | cell membranes |
| D. | cytoplasm |
| Answer» C. cell membranes | |
| 985. |
According to binomial nomenclature, the organism consists of two |
| A. | names |
| B. | properties |
| C. | modes of nutrition |
| D. | cell membrane |
| Answer» B. properties | |
| 986. |
In the paper industry, the enzymes break the starch to |
| A. | decrease its catabolism |
| B. | increase its anabolism |
| C. | increase its viscosity |
| D. | lower its viscosity |
| Answer» E. | |
| 987. |
The series of a biochemical reaction that is necessary for the maintenance of life of a living organism is called |
| A. | naturalism |
| B. | cataclysm |
| C. | deposition |
| D. | metabolism |
| Answer» E. | |
| 988. |
The pepsin enzymes work in |
| A. | stomach |
| B. | lungs |
| C. | kidneys |
| D. | spinal cord |
| Answer» B. lungs | |
| 989. |
The anabolism is related to |
| A. | release of water |
| B. | absorption of water |
| C. | release of energy |
| D. | utilization of energy |
| Answer» E. | |
| 990. |
The final products of aerobic respiration are |
| A. | carbon dioxide and water |
| B. | water and hydrogen |
| C. | hydrogen and oxygen |
| D. | nitrogen and hydrogen |
| Answer» B. water and hydrogen | |
| 991. |
During the common energy reactions, the number of high-energy outer bonds that are broken are |
| A. | two |
| B. | three |
| C. | four |
| D. | six |
| Answer» B. three | |
| 992. |
The factor on which oxidation of glucose depends is the availability of |
| A. | oxygen |
| B. | nitrogen |
| C. | carbon |
| D. | monoxide |
| Answer» B. nitrogen | |
| 993. |
The molecules of glucose are broken down during the first phase of aerobic respiration into |
| A. | four molecules of pyruvic acid |
| B. | two molecules of pyruvic acid |
| C. | five molecules of pyruvic acid |
| D. | three molecules of pyruvic acid |
| Answer» C. five molecules of pyruvic acid | |
| 994. |
The accessory pigments include |
| A. | chlorophyll-b only |
| B. | carotenoids only |
| C. | arytenoids |
| D. | chlorophyll-b and carotenoids |
| Answer» E. | |
| 995. |
Considering kinds of epithelial tissues, the squamous epithelium is composed of |
| A. | elongated cells |
| B. | single layer of flat cells |
| C. | single layer of cube cells |
| D. | many layer of flat cells |
| Answer» C. single layer of cube cells | |
| 996. |
The microfilaments are composed of |
| A. | actin protein |
| B. | chitin protein |
| C. | tubulin protein |
| D. | mosaic protein |
| Answer» B. chitin protein | |
| 997. |
The substance made by guard cells during day time is |
| A. | glucose |
| B. | carbon dioxide |
| C. | oxygen |
| D. | nitrogen |
| Answer» B. carbon dioxide | |
| 998. |
The membrane which covers the cytoplasm of eukaryotic and prokaryotic cells is known as |
| A. | epidermis |
| B. | epithelial |
| C. | cell wall |
| D. | cell membrane |
| Answer» E. | |
| 999. |
The phloem tissues are responsible for the |
| A. | osmotic pressure |
| B. | secretion of water |
| C. | absorption of water |
| D. | conduction of food |
| Answer» E. | |
| 1000. |
How enzymes lower the amount of activation of energy includes |
| A. | altering shape of substrate only |
| B. | disrupting charge distribution only |
| C. | increasing oxygen intake |
| D. | altering shape of substrate and disrupting charge distribution |
| Answer» E. | |