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Current Affairs January 2024

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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

Correct Answer :

C. Skeletal muscle


Related Questions

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The relationship between a bee and a flower, where the bee obtains nectar and pollen while aiding in pollination, is an example of:

A. Mutualism

B. Parasitism

C. Competition

D. Commensalism

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What is the process by which a seed begins to grow into a new plant?

A. Fertilization

B. Pollination

C. Germination

D. Photosynthesis

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Which part of the human brain is responsible for regulating basic bodily functions like breathing and heart rate?

A. Cerebrum

B. Cerebellum

C. Medulla oblongata

D. Thalamus

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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 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 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 of the following is a direct benefit of biodiversity to humans?

A. Increased greenhouse gas emissions

B. Decreased agricultural productivity

C. Development of new medicines

D. Soil erosion

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What is the name of the enzyme that unwinds and separates the DNA strands during replication?

A. RNA polymerase

B. Ligase

C. Helicase

D. Polymerase chain reaction (PCR)

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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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What is the primary function of the plant cuticle?

A. Gas exchange

B. Water retention and protection

C. Photosynthesis

D. Nutrient absorption

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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 term for the transfer of pollen from the male reproductive organ to the female reproductive organ of a flower?

A. Fertilization

B. Pollination

C. Germination

D. Embryo development

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4

What is the role of the hypothalamus in the human brain?

A. Coordination of muscle movements

B. Regulation of body temperature and hormone secretion

C. Memory storage

D. Visual processing

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Which type of behavior involves the establishment and maintenance of a territory for mating and/or obtaining resources?

A. Agonistic behavior

B. Courtship behavior

C. Dominance hierarchy

D. Territorial behavior

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What is the main function of the kidneys in the human body?

A. Regulation of blood sugar levels

B. Production of red blood cells

C. Filtration of blood and excretion of waste products

D. Digestion of food

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What is the process by which plants respond to light and grow toward it called?

A. Phototropism

B. Gravitropism

C. Thigmotropism

D. Hydrotropism

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Homo sapiens originated on which continent?

A. Africa

B. Asia

C. Europe

D. South America

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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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In angiosperms, what is the female reproductive structure that contains the ovules?

A. Stamen

B. Pistil (carpel)

C. Sepal

D. Petal

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Which hominid species is known for its use of fire and tools, and is believed to be the first to migrate out of Africa?

A. Neanderthals

B. Homo erectus

C. Australopithecus afarensis

D. Homo habilis

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Which type of learning occurs when an animal associates a neutral stimulus with a meaningful stimulus to produce a response?

A. Classical conditioning

B. Operant conditioning

C. Habituation

D. Imprinting

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Which of the following is the smallest unit of the nervous system?

A. Neuron

B. Nerve

C. Ganglion

D. Brain

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In a DNA molecule, adenine (A) pairs with:

A. Thymine (T)

B. Cytosine (C)

C. Guanine (G)

D. Uracil (U)

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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 process involves the copying of DNA into a complementary RNA molecule?

A. Transcription

B. Translation

C. Replication

D. Mutation

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In which type of plant tissue does most of the photosynthesis occur?

A. Xylem

B. Phloem

C. Epidermis

D. Mesophyll

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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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Which of the following is a characteristic of mammals?

A. Cold-blooded

B. Lay eggs

C. Have mammary glands

D. Breathe through gills

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What term describes the process by which animals adjust their internal biological clocks to match the daily cycle of light and dark in their environment?

A. Hibernation

B. Migration

C. Circadian rhythm

D. Nocturnal behavior

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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