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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.
| 551. |
The disease 'Osteomalacia' means |
| A. | vanishing of bone marrow |
| B. | softening of bones |
| C. | infections of bones |
| D. | hardening of bones |
| Answer» C. infections of bones | |
| 552. |
The gland which uses iodine for normal growth and functioning of the body is |
| A. | pancreas |
| B. | thyroid gland |
| C. | prostrate glands |
| D. | pituitary glands |
| Answer» C. prostrate glands | |
| 553. |
The iron is a component of myoglobin in |
| A. | white blood cells |
| B. | muscle cells |
| C. | ligament cells |
| D. | red blood cells |
| Answer» C. ligament cells | |
| 554. |
The example of anaerobic respiration is |
| A. | acidic respiration |
| B. | fermentation |
| C. | anabolic respiration |
| D. | catabolic respiration |
| Answer» C. anabolic respiration | |
| 555. |
The O2 is the chemical formula of |
| A. | free oxygen |
| B. | free nitrogen |
| C. | dioxide molecule |
| D. | monoxide molecule |
| Answer» B. free nitrogen | |
| 556. |
The example of an activity which follows the anabolic mechanism is |
| A. | electrolysis |
| B. | photosynthesis |
| C. | glycolysis |
| D. | respiration |
| Answer» C. glycolysis | |
| 557. |
The number of electrons and proton in one hydrogen atom is |
| A. | two |
| B. | four |
| C. | three |
| D. | one |
| Answer» E. | |
| 558. |
The important factor which plays a role in the ability of ATP to release and store energy is its |
| A. | pH structure |
| B. | cellular structure |
| C. | nuclear structure |
| D. | molecular structure |
| Answer» E. | |
| 559. |
The gain of hydrogen atoms from a molecule results in |
| A. | loss of neutrons |
| B. | loss of protons |
| C. | loss of electron |
| D. | gain of electrons |
| Answer» E. | |
| 560. |
The chemical energy is responsible for driving |
| A. | photosynthetic process |
| B. | nuclear process |
| C. | anabolic process |
| D. | catabolic process |
| Answer» B. nuclear process | |
| 561. |
The glucose will not be completely oxidized in |
| A. | absence of oxygen |
| B. | absence of nitrogen |
| C. | absence of hydrogen |
| D. | absence of carbon |
| Answer» B. absence of nitrogen | |
| 562. |
The ATP transforms after the breakdown of two-high energy bonds into |
| A. | Nicotinamide adenine dinucleotide phosphate (NADPH) |
| B. | Adenosine monophosphate (AMP) |
| C. | Adenosine diphosphate (ADP) |
| D. | none of above |
| Answer» D. none of above | |
| 563. |
The colors of light that carry more photosynthesis are |
| A. | yellow and green |
| B. | red and blue |
| C. | blue and green |
| D. | green and red |
| Answer» C. blue and green | |
| 564. |
The scientist who discovered the details of dark reactions is |
| A. | Karl Lohmann |
| B. | Melvin Calvin |
| C. | Ernst Calvin |
| D. | Daniel Koshland |
| Answer» C. Ernst Calvin | |
| 565. |
The form of investment of energy in photosynthesis is |
| A. | light energy |
| B. | kinetic energy |
| C. | potential energy |
| D. | dark energy |
| Answer» B. kinetic energy | |
| 566. |
As the intensity of temperature increases, the rate of photosynthesis |
| A. | increases |
| B. | decreases |
| C. | constant |
| D. | is limited |
| Answer» B. decreases | |
| 567. |
The hydrogen ions of water during photolysis are utilized for reducing of NADP+ into |
| A. | Nicotinamide adenine trinucleotide phosphate |
| B. | Nicotine Adenosine Triphosphate |
| C. | Nicotinamide adenine dinucleotide phosphate (NADPH) |
| D. | all of above |
| Answer» D. all of above | |
| 568. |
The molecule of glucose is equal to |
| A. | (6-C) |
| B. | (2-C) |
| C. | (5-C) |
| D. | (7-C) |
| Answer» B. (2-C) | |
| 569. |
At the end of the electron transport chain, the hydrogen ions and electrons are combined to form |
| A. | glucose |
| B. | water |
| C. | sugar |
| D. | amino acids |
| Answer» C. sugar | |
| 570. |
The ADP can be built from |
| A. | Adenosine monophosphate (AMP) |
| B. | Adenosine triphosphate (ATP) |
| C. | Nicotinamide adenine dinucleotide phosphate (NADPH) |
| D. | all of above |
| Answer» B. Adenosine triphosphate (ATP) | |
| 571. |
The site of photosystems is |
| A. | thylakoid membranes |
| B. | chromatin membrane |
| C. | chromatids membrane |
| D. | ionic membrane |
| Answer» B. chromatin membrane | |
| 572. |
The last step of cellular respiration is |
| A. | molecule-transport chain |
| B. | electron-transport chain |
| C. | proton-transport chain |
| D. | neutron-transport chain |
| Answer» C. proton-transport chain | |
| 573. |
The permanent tissues cannot |
| A. | infuse |
| B. | absorb |
| C. | secrete |
| D. | divide |
| Answer» E. | |
| 574. |
The harmful chemicals are detoxified through |
| A. | rough endoplasmic reticulum |
| B. | smooth endoplasmic reticulum |
| C. | synthetic endoplasmic reticulum |
| D. | lipid endoplasmic reticulum |
| Answer» C. synthetic endoplasmic reticulum | |
| 575. |
The cells that function in pulling different parts of the body together are |
| A. | platelets |
| B. | red blood cells |
| C. | lengthy nerve cells |
| D. | long muscle cells |
| Answer» E. | |
| 576. |
The vascular cambium and cork cambium are considered as types of |
| A. | lateral meristems |
| B. | cutin meristems |
| C. | epidermal meristems |
| D. | transverse meristems |
| Answer» B. cutin meristems | |
| 577. |
The epithelium which protects inner parts is |
| A. | stratified columnar |
| B. | ciliated squamous |
| C. | stratified squamous |
| D. | ciliated columnar |
| Answer» D. ciliated columnar | |
| 578. |
The name of the scientist who introduced taxa of "species" and "class" in the taxonomic hierarchy is |
| A. | Tournefort |
| B. | Carolus Linnaeus |
| C. | Andrea Caesalpino |
| D. | Augustus Rivinus |
| Answer» B. Carolus Linnaeus | |
| 579. |
Plants make their food because they are |
| A. | heterotrophic |
| B. | autotrophic |
| C. | parasitic |
| D. | all of above |
| Answer» C. parasitic | |
| 580. |
The cell wall of prokaryotic cells of kingdom Monera is made up of |
| A. | nitrogen and nitric acid |
| B. | amino acids and polysaccharide |
| C. | chitin |
| D. | chitin and amino acids |
| Answer» C. chitin | |
| 581. |
The scientific name Pisa sativum is used to recognize |
| A. | garlic |
| B. | mustard |
| C. | onions |
| D. | peas |
| Answer» E. | |
| 582. |
The resolution and magnification can be increased by using |
| A. | barometer |
| B. | Vernier scale |
| C. | lenses |
| D. | prisms |
| Answer» D. prisms | |
| 583. |
The types of cells in the human body are about |
| A. | 100 |
| B. | 150 |
| C. | 200 |
| D. | 250 |
| Answer» D. 250 | |
| 584. |
The molecules that are not passed through the pores of the membrane during the filtration is |
| A. | carbon molecules |
| B. | oxygen molecules |
| C. | protein molecules |
| D. | lipids |
| Answer» D. lipids | |
| 585. |
The tubulin protein is used by cells to |
| A. | perform glycolysis |
| B. | hold their shape |
| C. | function properly |
| D. | change their shape |
| Answer» C. function properly | |
| 586. |
The number of triplets of microtubules in each centriole is |
| A. | seven |
| B. | thirteen |
| C. | nine |
| D. | eleven |
| Answer» D. eleven | |
| 587. |
The lignin is the key chemical component of |
| A. | flower |
| B. | roots |
| C. | leaves |
| D. | wood |
| Answer» E. | |
| 588. |
The type of epithelial tissues present in bronchi and trachea is |
| A. | squamous epithelium |
| B. | columnar epithelium |
| C. | ciliated columnar epithelium |
| D. | cuboidal epithelium |
| Answer» D. cuboidal epithelium | |
| 589. |
The cell wall of fungi is made up of |
| A. | chitin |
| B. | lignin |
| C. | plasmodesmata |
| D. | plasmodium |
| Answer» B. lignin | |
| 590. |
The structure of cells in the connective tissues is |
| A. | squamous matrix |
| B. | extracellular matrix |
| C. | ciliated matrix |
| D. | stratified matrix |
| Answer» C. ciliated matrix | |
| 591. |
The organism whose cell wall is not made up of cellulose is |
| A. | fungi |
| B. | algae |
| C. | Volvox |
| D. | mosses |
| Answer» B. algae | |
| 592. |
According to Robert Hooke, the 'honeycomb' like tiny compartments in the cork are |
| A. | cellulae |
| B. | cellulose |
| C. | quadrants |
| D. | cellulite |
| Answer» B. cellulose | |
| 593. |
The lysosomes were discovered by |
| A. | Ernst James |
| B. | Rachel Hackel |
| C. | John Watson |
| D. | Christian Rene De Duve |
| Answer» E. | |
| 594. |
The Rough Endoplasmic Reticulum (RER) serves the function during |
| A. | lipid synthesis |
| B. | protein synthesis |
| C. | nuclear synthesis |
| D. | starch synthesis |
| Answer» C. nuclear synthesis | |
| 595. |
The object can be magnified under an electron microscope about |
| A. | 350, 000 times |
| B. | 250, 000 times |
| C. | 300, 000 times |
| D. | 450, 000 times |
| Answer» D. 450, 000 times | |
| 596. |
0.2 micrometer is the light microscope's |
| A. | magnitude |
| B. | resolution |
| C. | power |
| D. | lens capacity |
| Answer» C. power | |
| 597. |
The detail of organism which cannot be seen under a light microscope is |
| A. | chitin structure |
| B. | cellulae structure |
| C. | internal structure |
| D. | nucleus structure |
| Answer» D. nucleus structure | |
| 598. |
The columnar epithelium tissues are found in |
| A. | lungs and kidneys |
| B. | gall bladder and alimentary canal |
| C. | bronchi and trachea |
| D. | abdomen and heart |
| Answer» C. bronchi and trachea | |
| 599. |
The microscope which works by the passing of light through the specific specimen is called |
| A. | electron microscope |
| B. | proton microscope |
| C. | neutron microscope |
| D. | light microscope |
| Answer» E. | |
| 600. |
The dark spot where ribosomal RNA is assembled and formed is called |
| A. | actin |
| B. | chitin |
| C. | nuclei |
| D. | nucleoli |
| Answer» E. | |