What is the name of the enzyme that unwinds and separates the DNA strands during replication?
RNA polymerase
Ligase
Helicase
Polymerase chain reaction (PCR)
Correct Answer :
C. Helicase
Related Questions
Which of the following is NOT part of the human digestive system?
Stomach
Liver
Kidney
Small intestine
Which of the following is a sex-linked genetic disorder?
Huntington's disease
Down syndrome
Hemophilia
Cystic fibrosis
Which type of behavior involves the establishment and maintenance of a territory for mating and/or obtaining resources?
Agonistic behavior
Courtship behavior
Dominance hierarchy
Territorial behavior
What is the role of the hypothalamus in the human brain?
Coordination of muscle movements
Regulation of body temperature and hormone secretion
Memory storage
Visual processing
In a DNA molecule, adenine (A) pairs with:
Thymine (T)
Cytosine (C)
Guanine (G)
Uracil (U)
What is the function of the human liver?
Filtration of blood
Regulation of blood sugar levels
Production of bile and detoxification
Transport of oxygen
What is the term for the process by which modern humans gradually replaced archaic humans, such as Neanderthals, through migration and competition?
Speciation
Coevolution
Extinction
Out-of-Africa hypothesis
Which type of survivorship curve is characterized by a high mortality rate in early life, followed by high survivorship in later life?
Type I
Type II
Type III
Type IV
What is the name of the protein that carries oxygen in red blood cells?
Insulin
Hemoglobin
Collagen
Myoglobin
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 transfer of pollen from the male reproductive organ to the female reproductive organ of a flower?
Fertilization
Pollination
Germination
Embryo development
Which type of learning occurs when an animal associates a neutral stimulus with a meaningful stimulus to produce a response?
Classical conditioning
Operant conditioning
Habituation
Imprinting
Which of the following is NOT a method of seed dispersal in plants?
Wind
Water
Insects
Gravity
Which term refers to the variety of life on Earth, including the diversity of species, ecosystems, and genetic variation within species?
Sustainability
Biodiversity
Ecology
Conservation
Which part of a plant is responsible for producing seeds?
Stem
Leaf
Flower
Root
Which plant hormone is responsible for promoting cell elongation and growth in response to light?
Auxin
Gibberellin
Ethylene
Cytokinin
The relationship between a bee and a flower, where the bee obtains nectar and pollen while aiding in pollination, is an example of:
Mutualism
Parasitism
Competition
Commensalism
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
Homo sapiens originated on which continent?
Africa
Asia
Europe
South America
What is the term for an infectious protein that can cause disease in animals?
Bacteriophage
Virus
Prion
Viroid
What is the term for the total number of individuals of a species in a given area?
Population density
Carrying capacity
Population dispersion
Population growth rate
In which type of population distribution are individuals evenly spaced throughout their habitat?
Random dispersion
Clumped dispersion
Uniform dispersion
Overlapping dispersion
A human male has how many sex chromosomes?
1
2
23
46
What is the process by which plants respond to light and grow toward it called?
Phototropism
Gravitropism
Thigmotropism
Hydrotropism
Which species is believed to be the closest ancestor to modern humans?
Neanderthals
Homo erectus
Australopithecus afarensis
Homo habilis
Which part of the human brain is responsible for coordinating muscle movements and maintaining balance?
Cerebrum
Cerebellum
Medulla oblongata
Hypothalamus
What is the term for the maximum number of individuals of a species that an ecosystem can support indefinitely?
Carrying capacity
Population density
Limiting factor
Exponential growth
What is the term for the innate, automatic response of an organism to a stimulus?
Conditioning
Habituation
Reflex
Instinct
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 of the following is NOT a method of preventing the spread of infectious diseases?
Vaccination
Antibiotic use
Handwashing
Quarantine