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Current Affairs January 2024

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Homo sapiens originated on which continent?

A. Africa

B. Asia

C. Europe

D. South America

Correct Answer :

A. Africa


Related Questions

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Which plant hormone is responsible for promoting cell elongation and growth in response to light?

A. Auxin

B. Gibberellin

C. Ethylene

D. Cytokinin

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What is the term for the process by which two unrelated species evolve similar traits in response to similar environmental pressures?

A. Natural selection

B. Convergent evolution

C. Artificial selection

D. Coevolution

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Which scientist is credited with developing the theory of natural selection?

A. Charles Darwin

B. Gregor Mendel

C. Louis Pasteur

D. Alfred Wegener

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Which species is believed to be the closest ancestor to modern humans?

A. Neanderthals

B. Homo erectus

C. Australopithecus afarensis

D. Homo habilis

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What is the term for the innate, automatic response of an organism to a stimulus?

A. Conditioning

B. Habituation

C. Reflex

D. Instinct

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In which plant tissue does most photosynthesis occur?

A. Epidermis

B. Xylem

C. Phloem

D. Mesophyll

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Which microorganism is responsible for the majority of human yeast infections?

A. Bacteria

B. Virus

C. Fungus

D. Protist

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4

The human heart has how many chambers?

A. 2

B. 3

C. 4

D. 5

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Which class of vertebrates includes animals with scales, a bony skeleton, and a two-chambered heart?

A. Mammals

B. Amphibians

C. Reptiles

D. Birds

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What is the largest group of arthropods, known for their jointed appendages and hard exoskeleton?

A. Insects

B. Arachnids

C. Crustaceans

D. Myriapods

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What is the term for a disease-causing microorganism?

A. Antibiotic

B. Parasite

C. Pathogen

D. Virus

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Which of the following is a bacterial disease that primarily affects the respiratory system and can be prevented by vaccination?

A. Tuberculosis

B. Malaria

C. Cholera

D. Whooping cough (Pertussis)

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4

Which of the following is a sex-linked genetic disorder?

A. Huntington's disease

B. Down syndrome

C. Hemophilia

D. Cystic fibrosis

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What is the term for the process by which an animal forms a social attachment to another object or organism, often occurring shortly after birth?

A. Conditioning

B. Habituation

C. Reflex

D. Imprinting

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What is the process by which species evolve into more diverse forms over time?

A. Speciation

B. Convergent evolution

C. Divergent evolution

D. Coevolution

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What is the term for the process by which an embryo implants itself in the uterine lining and begins to develop?

A. Ovulation

B. Fertilization

C. Implantation

D. Menstruation

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Which organelle is responsible for protein synthesis?

A. Golgi apparatus

B. Ribosome

C. Endoplasmic reticulum

D. Lysosome

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What is the name of the protein that carries oxygen in red blood cells?

A. Insulin

B. Hemoglobin

C. Collagen

D. Myoglobin

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What is the main function of the respiratory system?

A. Regulation of blood sugar levels

B. Transportation of oxygen and carbon dioxide

C. Digestion of food

D. Filtration of blood

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What is the primary source of energy for most ecosystems?

A. Wind

B. Water

C. Sunlight

D. Geothermal heat

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Which of the following is NOT a method of preventing the spread of infectious diseases?

A. Vaccination

B. Antibiotic use

C. Handwashing

D. Quarantine

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Which of the following is NOT a function of the cell wall in plant cells?

A. Providing structural support

B. Regulating osmotic balance

C. Facilitating cell communication

D. Protecting against pathogens

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Which type of muscle is responsible for voluntary movements in the body?

A. Smooth muscle

B. Cardiac muscle

C. Skeletal muscle

D. Involuntary muscle

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What is the function of the human respiratory system?

A. Regulation of blood sugar levels

B. Transportation of oxygen and carbon dioxide

C. Digestion of food

D. Filtration of blood

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Which of the following is NOT part of the human digestive system?

A. Stomach

B. Liver

C. Kidney

D. Small intestine

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What is the term for the process by which plants lose water vapor through small openings in their leaves?

A. Transpiration

B. Photosynthesis

C. Respiration

D. Osmosis

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What is the primary driver of the current global biodiversity crisis?

A. Habitat loss

B. Climate change

C. Pollution

D. Invasive species

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What is the function of the human liver?

A. Filtration of blood

B. Regulation of blood sugar levels

C. Production of bile and detoxification

D. Transport of oxygen

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What is the term for the shedding of the uterine lining in the absence of pregnancy, resulting in menstruation?

A. Ovulation

B. Fertilization

C. Menarche

D. Menstruation

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Which of the following is a female reproductive disorder characterized by the growth of abnormal tissue in and around the uterus?

A. Endometriosis

B. Ovarian cysts

C. Polycystic ovary syndrome (PCOS)

D. Ectopic pregnancy