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4

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

Correct Answer :

B. Transportation of oxygen and carbon dioxide


Related Questions

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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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Which type of survivorship curve is characterized by a high mortality rate in early life, followed by high survivorship in later life?

A. Type I

B. Type II

C. Type III

D. Type IV

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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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4

What is the term for the total number of individuals of a species in a given area?

A. Population density

B. Carrying capacity

C. Population dispersion

D. Population growth rate

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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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4

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

A. Bacteria

B. Virus

C. Fungus

D. Protist

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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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4

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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4

The smallest unit of a chemical element that retains the properties of that element is called:

A. Atom

B. Molecule

C. Cell

D. Tissue

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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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4

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 process by which a pathogen is recognized and neutralized by the immune system upon subsequent exposure?

A. Vaccination

B. Antibody production

C. Immunity

D. Immune response

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4

Which of the following is a viral disease transmitted through the bite of infected mosquitoes?

A. Tuberculosis

B. Malaria

C. Influenza

D. Lyme disease

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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

What is the correct answer?

4

What is the term for the process by which modern humans gradually replaced archaic humans, such as Neanderthals, through migration and competition?

A. Speciation

B. Coevolution

C. Extinction

D. Out-of-Africa hypothesis

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4

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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4

What is the function of the pancreas in the human body?

A. Digestion of proteins

B. Regulation of blood sugar levels

C. Filtration of blood

D. Production of bile

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4

What is the largest organ in the human body?

A. Brain

B. Liver

C. Skin

D. Heart

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What is the name of the enzyme in saliva that begins the digestion of starches?

A. Pepsin

B. Amylase

C. Trypsin

D. Lipase

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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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4

What is the primary pigment responsible for photosynthesis in plants?

A. Chlorophyll

B. Carotene

C. Xanthophyll

D. Phycobilin

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4

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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4

What is the term for the study of human societies, cultures, and behaviors?

A. Sociology

B. Anthropology

C. Psychology

D. Archaeology

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What is the term for the physical appearance of an organism based on its genetic makeup?

A. Genotype

B. Phenotype

C. Allele

D. Homozygote

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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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Homo sapiens originated on which continent?

A. Africa

B. Asia

C. Europe

D. South America

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

A. Phototropism

B. Gravitropism

C. Thigmotropism

D. Hydrotropism

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What is the primary source of energy for most ecosystems?

A. Wind

B. Water

C. Sunlight

D. Geothermal heat