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In the female human reproductive system, what is a primary function of the ovaries?
AProducing egg cells and key female reproductive hormones
BProducing sperm cells
CFiltering waste from the blood
DProducing digestive enzymes
What term describes the dormant, low-activity state that certain animals, such as bears, enter during winter to conserve energy when food is scarce?
ACamouflage
BHibernation
CMetamorphosis only
DMigration
In the male human reproductive system, what is a primary function of the testes?
AProducing sperm cells and the hormone testosterone
BProducing insulin
CFiltering the blood
DProducing egg cells
What term describes the regular, often seasonal, movement of animals from one geographic region to another, frequently associated with breeding or seeking food?
ARegeneration
BCamouflage
CMigration
DHibernation
What key components should generally be included in a balanced diet to support overall health?
AAppropriate proportions of carbohydrates, proteins, fats, vitamins, minerals, and water
BA single food type consumed exclusively
COnly proteins and fats, with no carbohydrates
DOnly vitamins and minerals, with no other nutrient categories
What term describes the biological process in which a sperm cell and an egg cell fuse together to form a new single cell capable of developing into an embryo?
AImplantation
BOvulation
CFertilization
DMenstruation
What term describes animals that are primarily active during the night and typically rest during the day?
ANocturnal animals
BDiurnal animals
CMigratory animals only
DHibernating animals only
A household refrigerator keeps food cold primarily by using a refrigerant that repeatedly does what?
AAbsorbs heat as it evaporates inside the refrigerator, then releases that heat outside as it condenses
BGenerates electricity directly
CFreezes permanently and stays solid
DBurns to generate heat
What device combines the functions of measuring voltage, current, and resistance into a single instrument, widely used by electricians and technicians?
AAnemometer
BBarometer
CMultimeter
DSeismograph