Exam 4 Flashcards
Factors that influence global climate patterns include all of the following except?
surface water circulation and upwelling
deep ocean currents
air circulation and precipitation patterns
longitudinal variation in sunlight intensity
latitude and seasons
longitudinal variation in sunlight intensity
Which choices below describes a feature of grassland that explains why its remnants are concentrated in arid regions of North America and central Asia?
grassland is often consumed by fire
the soil is fertile and most grassland has been converted to farmland
large grazers, such as bison and wild horses, have depleted grassland
woody shrubs and trees have taken over in areas that receive more precipitation
Grassland has been found to be a good source of minerals and oil
the soil is fertile and most grassland has been converted to farmland
temp, precipitation, sunlight, and wind are the major components of ?
climate
biotic factors
biomes
dispersal
ecosystems
climate
an ecologist might conduct research to answer which of the following questions?
how does caffeine affect the transmission of nerve impulses in humans
how do tapeworms adapt to life in the human intestine
how does the uneven heating of earth’s surface cause the movement of air and water masses
how are different species of fish related (in an evolutionary sense) to each other
how do genes specify protein construction
how do tapeworms adapt to life in the human intestine
Specific defense mechanism
Response is specific to the invading agent (bacteria, pollen, virus, parasite)
Non-specific defense mechanism
Response to non-specific invading agent. The response is the same no matter the invading agent
Innate immunity
Genetic; mother-baby
Acquired immunity
Developed once exposed to antigen
Best response order for vaccines
Live, modified live, dead
Cellular immunity
NOT present at birth. Results when antigen encounters t lymphocytes. Requires exposure (vaccinations or personal contact)
T lymphocytes
Come from the thymus glands. Fights intracellular viruses, fungi, parasites, cancer.
3 types of humoral immunity
B lymphocytes- produce antibodies
Placental and breast milk
Administered antibodies (rabies, etc.)
Antigen
Foreign protein in our body
B lymphocytes
Produce antibodies in response to antigens
Antibodies bind to specific antigen
Phagocytic WBCs eat the antigens
T/F
T
