Currently where are we in the cycle of biodiversity? A. beginning of mass extinction B. middle of mass extinction C. near the end of mass extinction
Which human activity negatively affects the stability of the environment? a.Cutting down all trees in a forest b.Recycling paper c.Planting trees d.Riding bicycles?
What observation is explained by the law of independent assortment? Recessive trait forms are always hidden in the F 1 generation. Each pair of chromosomes separates on its own during meiosis. Dominant trait forms are always displayed in the F 1 generation. Homologous chromosomes cluster in tetrads during meiosis.
What enzyme is used to “glue” together the ends of cut pieces of DNA? a. DNA ligase b. protease c. restriction enzymes d. RNA polymerase e. DNA polymerase
This is a widely used nonrenewable resource that is formed over millions of years. a. wood b. water c. oil d. sand
Which summarizes the products of glycolysis? ATP, NADH, and pyruvic acid ATP, CO2, and pyruvic acid glucose, ATP, and NADH NAD+, NADH, and ADP
The __________, a layer of the endometrium, is shed during each menstruation and is then regenerated by the __________.
Which of the following is part of the peripheral nervous system? spinal cord sensors brain all of the above
How can biomass energy use improve water quality? a. The combustion of biomass material to produce energy improves water quality by filtering out pollutants. b. Biomass energy use does not require water, which reduces the impact of other energy producing technologies on water quality. c. Soil erosion and sedimentation are decreased during biomass crop growth. d. All of the above
Explain the difference between positive and negative control over transcription. drag the appropriate items to their respective bins.
Sunlight and nutrient availability are the factors influencing _____. phytoplankton biomass photosynthetic productivity chemosynthesis primary production
Which mechanism requires energy? A. Exocytosis B. Osmosis C. Diffusion of oxygen into a red blood cell. D. Diffusion of ions through a potassium channel
Wegener’s theory of _____ says that land masses move slowly ossil record continental drift plate tectonics biogeography
Which of the following best describes the uses of private land? a. Private land cannot be used to operate businesses. b. After initial construction. the uses of private land do not change. c. It can be used for a variety of activities and businesses. d. None of the above.
Which of the following is the most direct method for combating rainforest deforestation? a. ecotourism b. carbon credits c. rehabilitation d. conservation
Unlike life at the top of a body of water, life at the bottom of the body of water A. must rely on other means than photosynthesis. B. receives much more exposure to light. C. is affected by temperature and nutrient availability. D. performs much more photosynthesis.i have been stuck on this question for quite some time and cant seem to find the answer. help please :)
How are littoral and riparian zones different? a. Littoral zones contain vegetation, while riparian zones do not. b. Littoral zones have greater access to sunlight than riparian zones. c. Riparian zones are more important to aquatic animals than littoral zones. d. Riparian zones occur where water meets land, while littoral zones occur at depths of less than 15 feet.
To be accurate, a theory must continue to explain _____. a) new data b) new methods c) new inferences d) new ideas
Jan Ingenhousz repeated Priestley’s experiments under different light conditions. What stage of photosynthesis did Inglehaus’s experiment reveal? A. the first stage, which includes the light-dependent reactions. B. the first stage, which includes the light-independent reactions. C.the second stage, which includes the light-dependent reactions. D. the second stage, which includes the light-independent reactions.
What should you do if you don't know your family's medical history? Look through their personal files to learn about them Ask them politely at a family gathering or in private Get your doctor to contact your family for information Give your best guess on all medical forms that ask
What discovery was made by alvin? a. over 4000 new species of marine life b. hydrothermal vents c. the aqualung d. the temperature of different parts of the ocean
There are three major groups of mammals, categorized on the basis of their _____. see concept 34.6 ( page 739)
During pregnancy, it is particularly important to make sure to consume adequate A. saturated fatty acids. B. trans fatty acids. C. cholesterol. D. essential fatty acids.
Select all that apply. Besides annelids, segmentation is also seen in _____. arthropods mollusks flatworms vertebrates
Strep throat food poisoning and anthrax are all diseases caused by the following a. fungi b. virus c. protist d. bacteria
What component of a virus is injected into the infected cell? A.) the tail section B.) the nucleic acid C.) the protein capsid D.) the mitochondria
Which hormone enables contractions associated with birthing and milk flow during nursing? a. oxytocin b. insulin c. epinephrine d. serotonin?