Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 21.1, Problem 1TC
What do biologists mean when they say that sex and reproduction are uncoupled in most protists?
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How do protists carry out sexual reproduction? Discuss by giving an example.
A)
A major difference between eukaryotic cells and prokaryotic cells is that eukaryotic cells
Group of answer choices
exhibit little if any compartmentalization of function
are generally smaller than prokaryotic cells
have a large degree of internal organization
lack organelles
have little if any internal organization
B)
Which of the following statements about protists is false?
Group of answer choices
Some protists are mixotrophic
Certain protists share a common ancestor with land plants
Some protists are photosynthetic prokaryotes which are similar to the
ancestral chloroplast
Protists are a polyphyletic group of organisms that often bear little resemblance to each other
Although most protists are unicellular, some protists are multicellular as well
What is the evolutionary significance of protista?
Chapter 21 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 21.1 - define protist and describe the various ways in...Ch. 21.1 - What do biologists mean when they say that sex and...Ch. 21.1 - describe a scenario for the evolutionary origin of...Ch. 21.1 - describe the major effects of protists on people...Ch. 21.2 - Just as the invasive Cauterpa seaweed often...Ch. 21.2 - Cauferpa taxifolia, the invasive seaweed that...Ch. 21.2 - Is it important to stop the spread of Caulerpa?...Ch. 21.2 - list the major protist taxonomic groups and the...Ch. 21.2 - Imagine that you are a physician consulting with a...Ch. 21.2 - If you like sushi, youve probably eaten a sushi...
Ch. 21.2 - describe some examples of how members of each...Ch. 21 - The internal structure of many protists is much...Ch. 21 - Which of the following statements about protists...Ch. 21 - List the major differences between prokaryotes and...Ch. 21 - What are some important benefits and services...Ch. 21 - Prob. 2FIBCh. 21 - The harmful protist blooms known as red tides are...Ch. 21 - What is secondary endosymbiosis?Ch. 21 - Protist chloroplasts surrounded by four-layer...Ch. 21 - The organism that causes malaria belongs to which...Ch. 21 - what is the importance of dinoflagellates in...Ch. 21 - Prob. 4FIBCh. 21 - The finger-like extensions of the cell membrane...Ch. 21 - What is the major ecological role played by...Ch. 21 - Prob. 5FIBCh. 21 - Prob. 5MCCh. 21 - Which protist group consists entirely of parasitic...Ch. 21 - Prob. 6FIBCh. 21 - Which protist groups include seaweeds?Ch. 21 - Which protist groups include species that use...
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- what are some themes in the structural and functional diversity of protists? Nutritional? reproductive?arrow_forwardWhich 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_forwardUsing either bacteria or protists as an example, how can bacteria or protists reproduce sexually (i.e., exchange genetic material)? Be specific about which organism you choose to describe (bacteria or protist).arrow_forward
- What are two major diseases caused by protists (use common names)? -(HINT: this disease was on The Oregon Trail video game) - -(HINT: disease carried around by mosquitos) -arrow_forwardWhy are protists not all grouped together into a single eukaryotic supergroup? Their modes of reproduction are extremely diverse. They do not all possess the same mitochondria structure. They did not all evolve from a shared common ancestor. Their DNA sequence is not identical. They fulfill many different ecological roles. They are found in a variety of habitats.arrow_forwardProtists are a group of eukaryotic organisms that are brought together by scientists mostly by convenience. I) What is the relationship between all protists that ties them together? ii) provide an example of a autotrophic and heterotrophic protists group, iii) what is the relationship between the multicellular eukaryotes and the protists?arrow_forward
- What are the major similarities and differences between protists, fungi, and the slime molds?arrow_forwardAfter plasmogamy has occurred, many molds (Mucoromycetes) exist in a heterokaryotic stage for up to centuries at a time. What occurs at the immediate end of this stage? The nuclei fuse in a process called karyogamy. The hyphae fuse in a process called karyogamy. Diploid spores are produced in various spore-producing structures. A haploid zygote is formed that becomes multicellular through repeated rounds of mitosis.arrow_forwardWhy is 'protists' considered a polyphyletic grouping? Why do biologists still use it?arrow_forward
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