Which of the following is the best example of a scientific model? 1. The polar bear habitat at the zoo. 2. A student-created Jell-O model of a plant cell. 3. A turtle terrarium in a pet store. 4. A computer simulation of projected algal growth in a pond.

Related Questions

• How are animals divided into groups based on the number of tissue layers present during development? a) Two groups: those with three tissue layers and those with two. b) Three groups: those with four, three, or two tissue layers. c) Three groups: those with three, two, or one tissue layer. d) Two groups: those with two tissue layers and those with one.
• Fill in the blank. Small frogs in a marshy region feed on insects there. The relationship between the frogs and insects is a ______ relationship. a) commensal-host b) parasite-host c) predator-prey. When a certain species of lizard is introduced to the marsh, the lizards begin eating these insects as well. This introduction might result in ____________ . a) competition between lizards and frogs for food b) an increase in the frog population c) no change in the populations of any species
• Summarize briefly the process of photosynthesis from absorption of light to production of glucose ?
• Why are a variety of monomers needed to produce the complex molecules essential for life?
• What tissue is responsible for photosynthesis
• Which part of the brain, often referred to as the "executive suite," controls almost all brain activity: the cerebral cortex, diencephalon, brain stem, or cerebellum?
• Where does dna replication occur in a cell?
• Which property is shared by the processes of replication and transcription? a. they both take place in the cytoplasm of the cell. b. one strand of nucleic acid serves as a template for synthesis of another. c. they both make copies of dna. d. they require ribsomes. e. they both use the nucleic acid uracil?
• Translation involves transfer RNA (tRNA), which brings amino acids to the ribosomes to be assembled into proteins.
• Which statement about the difference between autotrophs and heterotrophs is true? A. Autotrophs transform radiant energy into chemical energy, but heterotrophs can’t. B. Autotrophs take in only oxygen, but heterotrophs take in both oxygen and carbon dioxide. C. Autotrophs have two different electron transport systems, but heterotrophs have none. D. Autotrophs don’t have a Calvin cycle, but heterotrophs do.