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(1) It manufactures its own food
(2) It divides by mitosis.
(3) It transforms light energy into chemical energy.
(4) It obtains nutrients from its environment.
Excretory—produces antibodies to fight disease-causing organisms
Digestive—produces hormones for storage and insulation
Circulatory—transports materials for energy release in body cells
Respiratory—collects waste material for digestion
These cells have different DNA than the cells in other body systems.
These cells have specific types of receptors on their membranes.
Reproductive system cells could be harmed if they made contact with hormones from other body systems.
Cells associated with the female reproduc- tive system only respond to the hormone testosterone.
Synthesis of molecules
Release of energy
Size of the polar ice caps
Temperature of the Earth
Rate of species extinction
Rate of carbon dioxide production
Equal amounts of ATP
Identical genetic information
Proteins that are all identical
Organelles for the synthesis of glucose
Results from isolation of the organism from the rest of the population
Is due to a genetic code that is present in the gametes of the organism
Decreases the number of genes in the body cells of the organism
Causes a change in the environment surrounding the organism
Different varieties can develop from a single species as a result of the recombination of genetic information.
Different species can develop from a single species as a result of the effect of similar environmental conditions.
Mutations will occur in the genes of a species only if the environment changes.
Variations in a species will increase when the rate of mitosis is decreased.
Unusual courtship behaviors lead to extinction
Homeostasis in an organism is influenced by physical characteristics
Behaviors that lead to reproductive success have evolved
Species B and C can be found in today’s environments.
Species A and D evolved from E.
Species A and C can still interbreed.
SpeciesA,B,andEallevolvedfromacommon ancestor and all are successful today.
Zygote contains a complete set of genetic information
Gametes contain a complete set of genetic information
Zygote contains half of the genetic information
Gametes contain half of the genetic information
Each twin receives different chromosomes from the egg
One twin may only have genes from the father
Gene expression may be influenced by factors that switch genes on and off
A gene mutation may have occurred before the zygote divided
Specialization of cells to form a fetus from an egg
Production of daughter cells having twice the number of chromosomes as the parent cell
Production of daughter cells having half the number of chromosomes as the parent cell
Division of cells resulting in the development of an embryo from a zygote
1 and 2
2 and 4
3 and 5
4 and 5
Enzymes that clot blood
Red blood cells that make antibodies
Chlorophyll that carries oxygen in the blood
DNA that controls starch digestion in the blood
Genetically inherited from parents
Learned by watching members of their species
A disadvantage to the survival of the species
A direct result of the type of food the bird eats
Feedback mechanisms regulate blood sugar levels.
Gene mutations are increased.
Energy from ATP is not available.
Dynamic equilibrium is disrupted.
Produce food for plants by the process of photosynthesis
Provide energy for plants by the process of decay
Can rapidly reproduce and evolve
Make inorganic materials available to plants
The biodiversity of these areas would not be affected.
Certain producer organisms would become more abundant in these areas.
Other manatees would move into these areas and restore the population.
Predators in these areas would occupy higher levels on the energy pyramid.
Maintenance of food chains
Competition within a species
A stable population size
Removing one species of plant for medicine
Harvesting nuts from some trees
Cutting down all the trees for lumber
Powering all homes with wind energy
Generate waste products as a result of technological advances
Use resources that are renewable
Increase planting large areas of one crop
Increase the use of pesticides
The extinction rate of species has decreased in the last 50 years.
Many bird species and some butterfly species make annual migrations.
New varieties of plant species appear more frequently in regions undergoing climatic change.
Through cloning, the genetic makeup of organisms can be predicted.
Species A is better adapted to this environment.
Species A is a predator of species B.
Species B is better adapted to this environment.
Species B is a parasite that has benefited species A.
Test only one group with 200 mg of the supplement
Test the supplement on both groups for 5 weeks instead of 10 weeks
Test a third group that receives 150 mg of the supplement
Test a third group that does not receive the supplement
High cost of solar panels, reduced fuel costs, and lower taxes
Low cost of solar panels, increased fuel costs, and higher taxes
Increased use of fuel, more stable ecosystems, and less availability of solar radiation
More air pollution, increased use of solar energy, and greater production of oil
Chromosome that is part of structure C
Chromosome that contains structures B and C
Nucleus that contains both structure B and structure A
Gene that is part of structure B
The water temperature would rapidly decrease.
The process of respiration in the snail would decrease.
The rate of reproduction of the fish would be affected.
The organisms would probably survive because materials would cycle.
Is unable to pass from the mother to the fetus
Causes mutations in cells of the ovaries
Slows the growth of the fetus
Blocks the receptors on antibody cells
The influence of humans on a natural system is always negative in the long term
The influence of humans on a natural system can have unpredictable negative impacts
Human alteration of an ecosystem does not need to be studied to avoid ecological disaster
Human alteration of an ecosystem will cause pollution and loss of finite resources
Synthesis of new DNA strands from subunits
Separation of DNA fragments on the basis of size
Production of genetically engineered DNA molecules
Removal of defective genes from DNA
Cut the DNA at a specific location
Move the DNA to a different organism
Copy the DNA for protein synthesis
Alter the DNA sequence in the segment
Unchanging environmental conditions
Patterns of behavior learned from parents