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Current Affairs January 2024

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What is the process by which segments of DNA are shuffled during the formation of gametes, leading to genetic diversity?

A. Meiosis

B. Mitosis

C. Replication

D. Crossing over

Correct Answer :

D. Crossing over


Related Questions

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What is the term for the maximum number of individuals of a species that an ecosystem can support indefinitely?

A. Carrying capacity

B. Population density

C. Limiting factor

D. Exponential growth

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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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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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What is the term for a disease-causing microorganism?

A. Antibiotic

B. Parasite

C. Pathogen

D. Virus

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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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In which type of population distribution are individuals evenly spaced throughout their habitat?

A. Random dispersion

B. Clumped dispersion

C. Uniform dispersion

D. Overlapping dispersion

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What is the term for an infectious protein that can cause disease in animals?

A. Bacteriophage

B. Virus

C. Prion

D. Viroid

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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 blood vessels carry oxygenated blood away from the heart to the body's tissues?

A. Veins

B. Arteries

C. Capillaries

D. Venules

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

A. Fertilization

B. Pollination

C. Germination

D. Photosynthesis

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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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Which organelle is responsible for protein synthesis?

A. Golgi apparatus

B. Ribosome

C. Endoplasmic reticulum

D. Lysosome

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

A. Conditioning

B. Habituation

C. Reflex

D. Instinct

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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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Which biome is characterized by cold temperatures, permafrost, and a lack of trees?

A. Tundra

B. Desert

C. Tropical rainforest

D. Grassland

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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 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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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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Which of the following is NOT a method of bacterial reproduction?

A. Binary fission

B. Budding

C. Conjugation

D. Meiosis

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What type of plant tissue is responsible for transporting water and nutrients throughout the plant?

A. Epidermis

B. Xylem

C. Phloem

D. Cortex

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4

Which of the following is a characteristic of arachnids?

A. Six legs

B. Two pairs of antennae

C. Exoskeleton made of chitin

D. Segmented body

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Which part of the human brain is responsible for coordinating muscle movements and maintaining balance?

A. Cerebrum

B. Cerebellum

C. Medulla oblongata

D. Hypothalamus

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What is the primary function of the fallopian tubes in the female reproductive system?

A. Menstruation

B. Fertilization of the egg by sperm

C. Implantation of the fertilized egg in the uterus

D. Production of estrogen