Biology EOc Questions And Answers With Complete Solutions

Which of these is required for aerobic cellular respiration? correct answer: oxygen In a typical animal cell, which component contains the greatest amount of water? correct answer: cytoplasm Students in a biology class thought that salt water would affect the movements of planaria. They put 25 planaria in salt water and recorded their observations. Which flaw was present in the design of their experiment? correct answer: There was no control. The diagram shows a section of a cell membrane that includes a channel protein is to______ correct answer: allow certain substances to enter or leave the cell Which set of materials would be best to use to prepare a wet mount slide of onion skin cells? correct answer: J Under a microscope, a series of cells are observed that lack membrane-bound internal organelles. Which of these is the most likely cell type? correct answer: Prokaryotic cell Which of these supports the cell theory as it is stated today? correct answer: New cells are produced by division of existing cells. A student observes that a type of eubacteria contains chlorophyll. Which of these does this type of bacteria have in common with plants? correct answer: It is photosynthetic In eukaryotic cells, the process indicated by arrow A occurs in the _____ correct answer: nucleus These three samples from the same live culture were all viewed at the same magnification. Which conclusion is best supported by the observation of these three samples? correct answer: The culture included some bacteria that were resistant to the chemical agent. Students research unicellular, prokaryotic organisms that live in harsh environments such as volcanic hot springs, brine pools, and anaerobic black organic mud. Which of these groups are the students most likely researching? correct answer: Archaebacteria The diagram shows the normal sequence of genes in a particular chromosome. Which chromosome could have resulted from a deletion that occurred in this chromosome? correct answer: A The diagram shows DNA fingerprints from a daughter horse, the mother horse, and four possible fathers. Which horse is most likely the father? correct answer: 3 According to this fossil record chart, trilobites probably lived in what ancient environment? correct answer: shallow seas An early biological theory stated that a change in a population can occur when organisms with favorable variations for a particular environment survive and pass this variations on to the next generation. This theory is better known as the theor