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
Chemical energy is transduced to the electrochemical energy of neural impulses at the retina cochlea (I know this one isn't right) ganglion cells olfactory mucosa semi-circular canals
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.
Characters traits can be discovered by analyzing __________. hyperbole imagery characterization syntax
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.
A seasonal color change helps animals in the taiga to _______. a. evade predators b. find shelter c. find food d. stay warm in winte
Which statement concerning osmosis and active transport is correct? Question 4 options: Neither facilitated diffusion nor osmosis requires cell energy. Diffusion of gases and other small molecules requires no energy on the part of the cell. Active transport requires cell energy and osmosis doesn't. Both endocytosis and active transport require cell energy.
What are the components of adenosine triphosphate (atp)? sugar three phosphates adenosine one phosphate base three phosphates base sugar three phosphates
The competitive exclusion principle states that two organisms cannot fill the same niche. Please select the best answer from the choices provided T F
At higher concentrations, auxins stimulate production of which of the following hormones? A) cytosine B) xylemene C) ethylene