MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 2103 Mcqs, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1951. |
Plants synthesis protein from |
| A. | starch |
| B. | sugar |
| C. | amino acids |
| D. | fatty acids |
| Answer» D. fatty acids | |
| 1952. |
Photosynthesis takes place faster in |
| A. | yellow light |
| B. | white light |
| C. | red light |
| D. | darkness |
| Answer» C. red light | |
| 1953. |
Normal adult human male has |
| A. | 10 gram of haemoglobin/100 gram of blood |
| B. | 14 gram of haemoglobin/100 gram of blood |
| C. | 18 gram of haemoglobin/100 gram of blood |
| D. | 24 gram of haemoglobin/100 gram of blood |
| Answer» C. 18 gram of haemoglobin/100 gram of blood | |
| 1954. |
Mutation is |
| A. | a factor responsible for plant growth |
| B. | a change which affects the offspring of F2 generation only |
| C. | a change that is inherited |
| D. | a change which affects the parents |
| Answer» D. a change which affects the parents | |
| 1955. |
Norepinephrine increases |
| A. | respiration |
| B. | urine production |
| C. | saliva production |
| D. | blood pressure |
| Answer» E. | |
| 1956. |
Monocot root differs from dicot root in having |
| A. | open vascular bundles |
| B. | scattered vascular bundles |
| C. | well developed pith |
| D. | radially arranged vascular bundles |
| Answer» D. radially arranged vascular bundles | |
| 1957. |
Night blindness is cause by lack of which vitamin? |
| A. | Vitamin A |
| B. | Vitamin B |
| C. | Vitamin C |
| D. | Vitamin D |
| Answer» B. Vitamin B | |
| 1958. |
Photo-oxidation is |
| A. | photorespiration |
| B. | photolysis |
| C. | light and oxygen induced breakdown |
| D. | All of the above |
| Answer» E. | |
| 1959. |
Plants that grow under average temperature and moisture are called |
| A. | halophytes |
| B. | hydrophytes |
| C. | mesophytes |
| D. | xerophytes |
| Answer» D. xerophytes | |
| 1960. |
If the other floral parts are inserted below the ovary, the ovary is said to be |
| A. | inferior |
| B. | superior |
| C. | posterior |
| D. | lower |
| Answer» C. posterior | |
| 1961. |
Continuous channels that appear to lie between plasma membrane and nuclear membrane is |
| A. | Endoplasmic reticulum |
| B. | Golgi complex |
| C. | mitochondria |
| D. | ribosome |
| Answer» B. Golgi complex | |
| 1962. |
What is true about Red blood cells (RBCs) |
| A. | are permanent cells |
| B. | can reproduce |
| C. | have no nucleus |
| D. | are biconvex |
| Answer» D. are biconvex | |
| 1963. |
First layer that is formed between primary walls of neighboring cells is called |
| A. | primary lamella |
| B. | middle lamella |
| C. | secondary lamella |
| D. | tertiary lamella |
| Answer» C. secondary lamella | |
| 1964. |
In a quiescent cell, DNA (Deoxyribonucleic Acid) is in the form of |
| A. | coiled chromosomes |
| B. | straight lines |
| C. | chromatin |
| D. | egg-shaped |
| Answer» D. egg-shaped | |
| 1965. |
Modification of proteins and lipids by converting them into glycoprotein and glycolipds are done by |
| A. | DNA |
| B. | mitochondria |
| C. | Golgi complex |
| D. | all of the above |
| Answer» C. Golgi complex | |
| 1966. |
All are the functions of the cornified layer, but to |
| A. | protect against germ enter |
| B. | prevent uncontrolled water evaporation |
| C. | replace granular layer |
| D. | protect soles of feet |
| Answer» D. protect soles of feet | |
| 1967. |
Negative feedback is introduced through |
| A. | ADH |
| B. | ATPs |
| C. | self-regulatory corrective mechanism |
| D. | cerebral hemisphere |
| Answer» D. cerebral hemisphere | |
| 1968. |
Golgi apparatus is found virtually in all cells which are in nature |
| A. | Prokaryotic |
| B. | eukaryotic |
| C. | protozoan's |
| D. | protoctists |
| Answer» C. protozoan's | |
| 1969. |
The purpose of heparin is to |
| A. | force blood clotting |
| B. | act as anticlotting agent |
| C. | cause failure of thrombokinase |
| D. | help in thrombin production |
| Answer» C. cause failure of thrombokinase | |
| 1970. |
Muscle wasting may seriously damage the |
| A. | enzymes |
| B. | liver |
| C. | heart |
| D. | thyroid glands |
| Answer» D. thyroid glands | |
| 1971. |
If the temperature of the surroundings is higher, mammals tend to |
| A. | loose more heat to it |
| B. | gain heat |
| C. | remain indifferent to it |
| D. | loose body temperature |
| Answer» C. remain indifferent to it | |
| 1972. |
Which one is function of fibrinogen |
| A. | fighting against diseases |
| B. | giving red color to the blood |
| C. | blood clotting |
| D. | hormones regulations |
| Answer» D. hormones regulations | |
| 1973. |
Upon passing through the tissues containing very less oxygen (O₂), |
| A. | oxyhemoglobin releases its hemoglobin |
| B. | oxyhemoglobin releases its oxygen |
| C. | oxyhemoglobin shines with bright red color |
| D. | forms carboxyhemoglobin |
| Answer» B. oxyhemoglobin releases its oxygen | |
| 1974. |
Smooth form of endoplasmic reticulum is without |
| A. | Golgi complex |
| B. | ribosome |
| C. | nucleus |
| D. | mitochondria |
| Answer» C. nucleus | |
| 1975. |
Process of engulfing solid particles in form of vacuoles is called |
| A. | endycytosis |
| B. | phagocytosis |
| C. | pinocytosis |
| D. | ectocytosis |
| Answer» C. pinocytosis | |
| 1976. |
Exchange of materials takes place between nucleus and cytoplasm with help of |
| A. | nuclear pores |
| B. | nuclear membrane |
| C. | nucleus |
| D. | chromatin network |
| Answer» B. nuclear membrane | |
| 1977. |
Homeostasis is build on the principle of |
| A. | In Rome, do what the Romans do |
| B. | Time and Tide wait for none |
| C. | A stitch in time saves nine |
| D. | Do the opposite to what is happening |
| Answer» E. | |
| 1978. |
Each nephron consists of |
| A. | distal convoluted tubule |
| B. | proximal convoluted tubule |
| C. | Bowman' capsule |
| D. | all of above |
| Answer» E. | |
| 1979. |
Cellulose can not be digested by |
| A. | plants |
| B. | fish and mammals |
| C. | herbivores |
| D. | fungi |
| Answer» C. herbivores | |
| 1980. |
Due to hemoglobin, the |
| A. | arteries appear red |
| B. | arteries appear blue |
| C. | veins appear red |
| D. | veins appear blue |
| Answer» E. | |
| 1981. |
Cell surface membrane is also called |
| A. | Plasma Membrane |
| B. | Nuclear Envelope |
| C. | Nuclear Membrane |
| D. | Cell Wall |
| Answer» B. Nuclear Envelope | |
| 1982. |
Instrument to measure blood pressure is called as |
| A. | sphygamometer |
| B. | sphygmomanometer |
| C. | nanometer |
| D. | sphygmanometer |
| Answer» C. nanometer | |
| 1983. |
Substances are allowed to pass through cell membrane to maintain a constant |
| A. | concentration |
| B. | gradient |
| C. | temperature |
| D. | ph |
| Answer» C. temperature | |
| 1984. |
Hemoglobin is produced by combining |
| A. | iron and protoplasm |
| B. | iron and organic molecule |
| C. | iron and phosphate |
| D. | iron and essential minerals |
| Answer» C. iron and phosphate | |
| 1985. |
Angina pectoris means |
| A. | chest pains |
| B. | narrowing of lumen |
| C. | dilatation of arteries |
| D. | abnormal deposits of fatty materials |
| Answer» B. narrowing of lumen | |
| 1986. |
Fluid Mosaic Model favors that cell membrane contains proteins which are embedded in fashion of |
| A. | zigzag |
| B. | criss-cross |
| C. | mosaic |
| D. | eplic |
| Answer» D. eplic | |
| 1987. |
According to division of homeostasis, Birds are |
| A. | homoeothermic |
| B. | poikilothermic |
| C. | heteroeothermic |
| D. | hypoeothermic |
| Answer» B. poikilothermic | |
| 1988. |
The term cell was named by |
| A. | English botanist |
| B. | Swedish Botanist |
| C. | German Botanist |
| D. | Italian Botanist |
| Answer» B. Swedish Botanist | |
| 1989. |
Tissue fluid is also known as |
| A. | lymph fluid |
| B. | plasma fluid |
| C. | interstitial fluid |
| D. | neurotic fluid |
| Answer» D. neurotic fluid | |
| 1990. |
Protein formation is enabled through |
| A. | nucleoli |
| B. | broccoli |
| C. | cytoplasm |
| D. | mitochondria |
| Answer» B. broccoli | |
| 1991. |
In blood of mammals ,plasma |
| A. | constitutes 45% of blood |
| B. | contains corpuscles |
| C. | contains platelets |
| D. | is the fluid part of blood |
| Answer» E. | |
| 1992. |
Nucleoplasm is found inside |
| A. | hemoglobin |
| B. | nucleus |
| C. | cell membrane |
| D. | nucleoli |
| Answer» C. cell membrane | |
| 1993. |
When the body temperature rises, several mechanism helps in loosing heat but the mechanism that helps in reducing heat production is |
| A. | reduced breathing |
| B. | reduced rate of metabolism |
| C. | excessive sweating |
| D. | excessive vasodilation |
| Answer» C. excessive sweating | |
| 1994. |
Self regulatory mechanism and negative feedback cannot initiate in the absence of |
| A. | appropriate body temperature |
| B. | biosensors |
| C. | receptors |
| D. | bacteria and virus |
| Answer» D. bacteria and virus | |
| 1995. |
Epidermal cells perform the function of |
| A. | producing sugars |
| B. | protecting the inner regions of leaf |
| C. | regulating the amount of water lost |
| D. | chloroplast storage |
| Answer» C. regulating the amount of water lost | |
| 1996. |
Process in which digested food particles are taken into body cells is known as |
| A. | digestion |
| B. | assimilation |
| C. | absorption |
| D. | eating a lot |
| Answer» D. eating a lot | |
| 1997. |
Function of detoxifying harmful drugs from body is done by |
| A. | smooth endoplasmic reticulum |
| B. | rough endoplasmic reticulum |
| C. | smooth exoplasmic reticulum |
| D. | rough exoplasmic reticulum |
| Answer» B. rough endoplasmic reticulum | |
| 1998. |
Monocytes and polymorphs are examples of |
| A. | leucocytes |
| B. | lymphocytes |
| C. | phagocytes |
| D. | granulocytes |
| Answer» D. granulocytes | |
| 1999. |
A group of ribosome which are attached to mRNA by small ribosome unit is known as |
| A. | polyribosome |
| B. | polysome |
| C. | monosome |
| D. | oligosome |
| Answer» C. monosome | |
| 2000. |
Chloroplast contain a green pigment called |
| A. | leaf |
| B. | stem |
| C. | chlorophyll |
| D. | chromoplast |
| Answer» D. chromoplast | |