What is the primary source of energy for most ecosystems?
Wind
Water
Sunlight
Geothermal heat
Correct Answer :
C. Sunlight
Related Questions
What is the term for the shedding of the uterine lining in the absence of pregnancy, resulting in menstruation?
Ovulation
Fertilization
Menarche
Menstruation
Which of the following is NOT a method of preventing the spread of infectious diseases?
Vaccination
Antibiotic use
Handwashing
Quarantine
Which part of a plant is responsible for producing seeds?
Stem
Leaf
Flower
Root
What is the primary function of the mitochondria?
Protein synthesis
Energy production
Lipid synthesis
Waste elimination
Which cell organelle contains digestive enzymes and is involved in cellular waste disposal?
Mitochondria
Nucleus
Lysosome
Chloroplast
What is the primary function of the plant cuticle?
Gas exchange
Water retention and protection
Photosynthesis
Nutrient absorption
What is the name of the enzyme in saliva that begins the digestion of starches?
Pepsin
Amylase
Trypsin
Lipase
What term describes the role a species plays in its ecosystem, including its interactions with other species and its use of resources?
Niche
Habitat
Territory
Ecosystem role
Which of the following is NOT a function of the cell wall in plant cells?
Providing structural support
Regulating osmotic balance
Facilitating cell communication
Protecting against pathogens
What is the term for the process by which a pathogen is recognized and neutralized by the immune system upon subsequent exposure?
Vaccination
Antibody production
Immunity
Immune response
What is the function of the cell membrane?
Synthesizing proteins
Protecting the nucleus
Regulating the passage of substances in and out of the cell
Storing genetic information
What is the term for the study of human societies, cultures, and behaviors?
Sociology
Anthropology
Psychology
Archaeology
What is the primary driver of the current global biodiversity crisis?
Habitat loss
Climate change
Pollution
Invasive species
Which microorganism is responsible for the majority of human yeast infections?
Bacteria
Virus
Fungus
Protist
What is the primary source of energy for most ecosystems?
Wind
Water
Sunlight
Geothermal heat
Which part of the human brain is responsible for coordinating muscle movements and maintaining balance?
Cerebrum
Cerebellum
Medulla oblongata
Hypothalamus
The study of the geographic distribution of species is known as:
Biogeography
Ecology
Ethology
Taxonomy
What is the process by which segments of DNA are shuffled during the formation of gametes, leading to genetic diversity?
Meiosis
Mitosis
Replication
Crossing over
Which plant hormone is responsible for promoting cell elongation and growth in response to light?
Auxin
Gibberellin
Ethylene
Cytokinin
What is the main function of the kidneys in the human body?
Regulation of blood sugar levels
Production of red blood cells
Filtration of blood and excretion of waste products
Digestion of food
Which of the following is an example of an invasive species?
Native grasses in their natural habitat
A non-native tree planted in a garden
A species that naturally occurs in a specific ecosystem
A species that is endangered
Which scientist is credited with developing the theory of natural selection?
Charles Darwin
Gregor Mendel
Louis Pasteur
Alfred Wegener
What is the name of the protein that carries oxygen in red blood cells?
Insulin
Hemoglobin
Collagen
Myoglobin
Which type of muscle is responsible for voluntary movements in the body?
Smooth muscle
Cardiac muscle
Skeletal muscle
Involuntary muscle
Which of Mendel's laws states that alleles for different genes segregate independently during gamete formation?
Law of Dominance
Law of Independent Assortment
Law of Segregation
Law of Inheritance
Which level of ecological organization includes all the biotic and abiotic factors in a given area?
Population
Community
Ecosystem
Biosphere
What is the process by which plants respond to light and grow toward it called?
Phototropism
Gravitropism
Thigmotropism
Hydrotropism
What is the primary function of the root system in plants?
Photosynthesis
Anchoring the plant and absorbing water and nutrients
Producing flowers and fruits
Transporting sugars
Which class of vertebrates includes animals with scales, a bony skeleton, and a two-chambered heart?
Mammals
Amphibians
Reptiles
Birds
What is the name of the enzyme that unwinds and separates the DNA strands during replication?
RNA polymerase
Ligase
Helicase
Polymerase chain reaction (PCR)