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, Volume 1 - With Access (Custom)
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Campbell Essential Biology with Physiology (6th Edition)
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- A scientist sequences the genome of Chara, red algae, and a tomato plant. What result would support the conclusion that Charophytes should he included in the F’/amae kingdom? The Chara genome is more similar to the red algae than the tomato plant All three genomes are distinctly different The Chara genome is more similar to the tomato plant genome than the red algae genome The tomato plant genome is distinct from the red algae genome.arrow_forward1. Under a microscope, you probably noticed that all of the onions cells were roughly the same shape whereas the squamous cells from your buccal cavity, while roundish, may have been folded or bent. What do you think keeps all of the plant cells the same shape? A) Vaucole B) Cell membrane C) Chloroplasts D) Cell wall 2. When stained with methylene blue (buccal cell) and haemalum acid (onion cell), the nuclei were the only cellular structures that stained. This has to do with the stains being cationic (positively charged). What charge do you think the nuclei are in order to be stained? A) Positive (cationic) B) Negative (anionic) C) Neutral D) Hypotonic 3. FILL IN THE BLACKS USING THE BOLDED BRACKET OPTIONS: Observable physical differences between the three types of simple epithelial tissue are that squamous epithelial cells are _________ (flat, equal, more, less, cube, column, buccal, wider), whereas cuboidal epithelial cells have _____ (flat, equal, more, less, cube, column,…arrow_forwardThe endosymbiotic theory argues that prokaryotes become some of the organelles of early eukaryotic cells. All of the following support this hypothesis Except: A. The mitochondria and chloroplasts have their own DNA and are nearly idential to some free-living prokaryotes b. Mitochondria and chloroplasts are nearly idential to some free-living prokaryotes. c. Mitochondria and chloroplasts have their own DNA d. The vacuoles can come and go across the plasma membranearrow_forward
- Test 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_forward1. Which of the following is not an evidence that chloroplasts and mitochondria originated as prokaryotic endosymbionts of larger cells? * A. They contain circular DNA molecules not associated with proteins. B. Their membranes have enzymes and transport systems that resemble those found in plasma membranes of prokaryotes. C. Their ribosomal RNA is more similar to that of eubacteria than to eukaryotes. D. They contain their own genome and produce their own proteins. 2. Why does the endosymbiotic hypothesis maintain that chloroplasts may have at least three origins? It is because * A. Molecular systematics link the red line, green line and brown line to three different eubacteria. B. The chloroplasts of green plants show three distinct morphologies. C. The pigment composition and thylakoid arrangement cyanobacteria occur in three different arrangements. D. The phyla of algal protists can be divided into three…arrow_forwardA student is using a Venn Diagram to communicate understanding of the similarities and differences between fungi and animals. The student placed key characteristics in each circle and classmates are asked to review the work. A-You should remove ‘has a cell wall’ because neither fungi nor animals have a cell wall. B- You need to move the term heterotroph to the ‘animals’ circle because fungi can be heterotrophic or autotrophic.” C-“You have all of the information correct.” D- All animals only reproduce sexually so you need to move ‘may reproduce sexually or asexually ‘to fungi only.arrow_forward
- The fossil record suggests that the first cells were prokaryotes; scientists believe that eukaryotic cells evolved from prokaryotic cells in a particular manner; this theory is called endosymbiotic theory. Explain,in your own words what is meant by the endosymbiotic theory How does the structure of mitochondria and chloroplasts support the endosymbiotic theory ? asap please.arrow_forwardThis chapter shows a phylogenetic tree for the three domains of life, which is based on DNA sequence data for rRNA and other genes. Which of the following answers concerning the phylogenetic relationships found within this tree is incorrect? View Available Hint(s)for Part A Euryarcheotes are found in the Archaea Diatoms, Tubulinids, and Euglenozoans belong to the domain Eukarya Forams, Fungi, and Chlamydias belong to the domain Eukarya. Spirochetes belong to the domain Bacteria Ciliates, Red Algae, and Plants belong to the domain Eukarya.arrow_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_forward
- 1. Why was the great oxygenation event important for mitochondrial development? a) In your own words, define symbiotic. 2. Chloroplasts and mitochondria both contain a circular DNA chromosome, and ribosomes. Why does this evidence support the theory of endosymbiosis as the mechanism for the origin of eukaryotic cells? a) Today, could mitochondria live independently of their eukaryotic cell host? Give two pieces of evidence to support your answer.arrow_forwardCan you give at least 3 statements of the similarities of the life processes of plants and animals?arrow_forwardLesson: Perpetuation of Life Give at least five examples of genetic engineered plants/animals. a. b. c. d. e. Give at least 2 examples of the following: Fission- - Budding- - Fragmentation- - 3. Give at least 4 examples of plants which can do Vegetative Reproduction. a. b. c. d.arrow_forward
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