Which of the following steps happens first during transcription? A. RNA polymerase reaches the end of the gene. B. RNA polymerase reaches the beginning of a gene. C. RNA polymerase pulls apart the double helix. D. RNA polymerase produces mRNA from DNA.
Which of the following is responsible for deep ocean circulation? Question 5 options: A. wind B. Coriolis force C. density differences D. friction
Emotions can lead one to engage in maladaptive behavior when they ___________. A. increase one's desire to be kinder toward others B. motivate one toward positive action C. lead one to effectively communicate thoughts and feelings D. cause one to want to become physically violent toward another
Botulinum toxin binds to receptors present at the axon terminal in order to enter the neuron. what vesicular transport process do you think is involved in the toxin entering the neuron
A virus is referred to as a particle rather than a cell because structurally it is a A) RNA core in a carbohydrate envelope. B) nucleus surrounded by a protein coat. C) plasmid of DNA surrounded by a capsid. D) RNA or DNA core surrounded by a protein coat.
During fermentation, the conversion of pyruvate into lactic acid requires... a. NADH b. carbon dioxide c. ATP d. oxygen gas
Which list below describes the path of ocean water through the water cycle? Evaporation, condensation, precipitation, runoff Evaporation, precipitation, runoff, ocean storage Transpiration, precipitation, runoff, ocean storage Condensation, precipitation, runoff, groundwater
What did Chargaff discover while studying bases in the DNA of organisms A.The bases in the DNA of each organism were unique. B.The ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine. C.The overall percentages of bases were different from one organism to the next. D.There were equal amounts of all four bases in every organism, or 25 percent of each base.
A _____ is a horizontal stem that can divide and grow in several directions at once. corm rhizome stolon bulb
Select all that apply. Select the items that have a pH level between 5 and 8. pure water Great Salt Lake saliva ammonia
M. J. Schleiden shifted the scientific community's attention to cellular processes with his A. attention to disproving spontaneous generation B. publication of ideas on cell generation C. theories on the division of cells D. claim that cells were the basic unit of all plant matter
A weakened immune system may be caused by an overproduction of lysozymes. muscle disorders. immunodeficiency disorders. complement systems in the blood.
Polymers are large organic molecules that are made of a. cations. c. carbon and oxygen only. b. anions. d. repeating units.
Which of the following best describes the result of meiosis II? Four genetically different, diploid daughter cells Four genetically different, haploid daughter cells Four genetically identical, diploid daughter cells Four genetically identical, haploid daughter cells I think it's C or B but I'm not sure.. please help.
A fern grows sporangia under its fronds. What is the next step in its life cycle? Mitosis Gametophyte Gametes Spores
Which of the following statements about tolerance range is true? a. Tolerance range is different for different organisms. b. The tolerance range is the total number of organisms that can be supported by an ecosystem. c. Tolerance range is affected by biotic factors in an ecosystem. d. The available water supply does not impact an organism’s tolerance range.