Concept explainers
DRAW IT Ø The three domains you learned about in Concept 1.2 can be represented in the tree of life as the three main branches, with three subbranches on the eukaryotic branch being the kingdoms Plantae,
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Campbell Biology (11th Edition)
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Campbell Essential Biology with Physiology (6th Edition)
Human Anatomy & Physiology (Marieb, Human Anatomy & Physiology) Standalone Book
Becker's World of the Cell (9th Edition)
Principles of Anatomy and Physiology
Genetics: Analysis and Principles
- Which one of the following statements is the most accurate comparison of human, bacterial and fungal cells? (May answer is LETTER C but i am not sure hope somebody can help me ) A. Human and fungal cells have similar ribosomes, whereas bacterial ribosomes are different. b. Human and fungal cells have similar cell wall, in contrast to bacteria whose cell wall contains peptidoglycan. c. Human cells undergo mitosis, whereas neither bacteria nor fungi do. d. Human and bacterial cells have plasmids, whereas fungal cells do not have.arrow_forwardBased on Baluska et al. (2004)'s paper entitled "Eukaryotic Cells and their Cell Bodies: Cell Theory Revised" 1. What are the reasons why we need to revise the cell theory? What parts of it are problematic? 2. What is the cell body being proposed by Baluska (2004) and what makes it the ‘actual’ basic unit of life? 3. What is the cell periphery apparatus? How is it related to the aforementioned cell body?arrow_forward1. Viruses that do not have a lipid envelope tend to remain infectious outside the body longer than enveloped viruses. “Naked” viruses are also less likely to be rendered harmless by soap and water. Why? 2. The apicomplexan that causes malaria has a photosynthetic ancestor and contains an organelle that evolved from its ancestral chloroplast. The organelle no longer functions in photosynthesis, but it does carry out some essential metabolic tasks. Why would targeting this organelle yield an antimalarial drug that would be likely to have minimal side effects?arrow_forward
- A cell described as n + n is (a) monokaryotic (b) diploid (c) haploid (d)coenocytic (e) dikaryoticarrow_forwardThe cells labeled A came from a human cheek. The cells labeled B came from an aquatic plant called Elodea. Which is a difference you can see in these images? 1. there is only one cheek cell but many Elodea cells 2. the cheek cells have organelles, the Elodea cells do not 3. all these choices are correct 4. the cheek cells are eukaryotic, the Elodea cells are prokaryotic 5.the cheek cells have no cell wall, the Elodea cells doarrow_forwardCan you identify the major theme illustrated by each of the following examples? If necessary, you may review the themes in Chapter 1 of your book Match the themes on the left with the examples on the right. Not all themes will be used. Interactions within biological systems Information flow Evolution Pathways that transform energy and matter Relationship of structure to function Reset Help Every cell contains a DNA "cookbook" that provides directions on how to make and maintain that cell When a cell reproduces, it must duplicate its DNA, providing one copy to the new offspring cell while keeping one copy for itself Wattion and Crick realized that the chemical properties of each kind of base in DNA dictated the base pairings Each base has protruding chemical groups that can best form hydrogen bonds with only one appropriate partner Besides having practical purposes, a shared genetic vocabulary also reminds us of the kinship that connects all life on Earth The process of DNA replication…arrow_forward
- Why is the mitochondria so important to a eukaryoWhich is an example of a prokaryotic cell?tic cell? What is the plasmid in prokaryotes? What is the jelly-like matrix in both prokaryotes and eukaryotes that provides form to the cell and holds many of the organelles? What attribute should a hypothesis contain so that it lends itself to an objective experiment that relies on quantitative observations and data? Which is a properly written hypothesis?Which hypothesis states that no statistical significance exists between the independent and dependent variable? Question options: statistical hypothesis complex hypothesis null hypothesis alternative hypothesis simple hypothesisarrow_forwardWhat types of biological abilities can be combined to create more capable, more complex cells? How does the presecence of different types of ribosomes inside a eukaryotic cell strengthen the endosymbiotic theory? How does chloroplasts and mitochondria found within a cell have two membranes? How does the emergence of endosymbotic theory change the way humans view microorganisms? Will people be comfortable imaginning that the life functions of pants and animals, including their own, are actually dependent on the coexistence of many different microscopic pieces?arrow_forward17) Multicellularity is an important evolutionary innovation in the history of life on Earth. For the following statements, designate which is true (T) and which is false (F). Correct the false. Multicellularity has evolved independently a few times in the history of life. Multicellular members of domain Eukarya arose through the process of endosymbiosis. Multicellular organisms have cells specialized for different functions, with each cell type having a unique genetic sequence. Cell differentiation occurs in unicellular organisms but not in multicellular organisms. Multicellular organisms are absent from the domain Archaea.arrow_forward
- 42. Describe the function of the following parts of a cell: nucleus, rough endoplasmic reticulum, smooth endoplasmic reticulum, golgi apparatus, ribosome, lysosome, plasma membrane, cytosol. 43. Name 4 structures present in a plant cell that are not in an animal cell and describe the function of 2 of them. 44. Formulate a hypothesis based on the observation that your car wouldn't start this morning. Your hypothesis should offer an explanation of why that is the case. Then offer a way you could test your hypothesis. 6 & 7 fg 8 fg 9 f10 insert Oarrow_forwardEukaryotes are sometimes termed nature’s master builders. Why is this a more apt description for members of the Eukaryotic branch tree of life than Prokaryotic branches life?arrow_forwardTest Your Understanding 1. Which of the following is not true of the protists? (a) they are unicellular, colonial, coenocytic, or simple multicellular organisms (b) their cilia and flagella have a 9 + 2 arrangement of microtubules (c) they are prokaryotic, as bacteria and archaea are (d) some are free-living, and some are endosymbionts (e) most are aquatic and live in the ocean or in freshwater pondsarrow_forward
- Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage LearningBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning