Connect And Learnsmart Labs Access Card For Biology: Concepts And Investigations
3rd Edition
ISBN: 9781259335976
Author: Marielle Hoefnagels
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 18, Problem 7WIO
Summary Introduction
To determine:
Why natural selection favors stalk formation in cellular slime molds even though the cells of the stalk die.
Concept introduction:
Cellular slime molds spend their life as an independent individual that feeds, grows, and divides by cell division. During harsh times, individuals can form large slug-like multicellular colony with a distinct cell membrane to reproduce.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Why are the cells in the animal pole and vegetal pole of a medialecithal blastula different in terms of size? What has gravity got to do with it?
Hyphae that are divided into compartments by cross walls are called septate hyphae. True or false?
Although they are not photosynthetic, apicomplexan parasites such as Plasmodium have modified plastids. Describe a current hypothesis that explains this observation
Chapter 18 Solutions
Connect And Learnsmart Labs Access Card For Biology: Concepts And Investigations
Ch. 18.1 - What features define the protists?Ch. 18.1 - Prob. 2MCCh. 18.1 - Why are evolutionary biologists interested in...Ch. 18.2 - Prob. 1MCCh. 18.2 - Prob. 2MCCh. 18.2 - List and describe the characteristics of the major...Ch. 18.3 - What mode of nutrition do the slime molds and...Ch. 18.3 - Prob. 2MCCh. 18.3 - Prob. 3MCCh. 18.4 - Prob. 1MC
Ch. 18.4 - Prob. 2MCCh. 18.4 - List three diseases caused by flagellated...Ch. 18.4 - Compare and contrast amoebae, foraminiferans, and...Ch. 18.4 - How do ciliates move and eat?Ch. 18.4 - Prob. 6MCCh. 18.5 - Prob. 1MCCh. 18.5 - What features unite some of the major lineages of...Ch. 18.6 - Use the food chain in figure 18.21a to explain why...Ch. 18.6 - Prob. 2MCCh. 18 - Which of the following is NOT a characteristic of...Ch. 18 - Suppose you are studying a protist under a...Ch. 18 - Some protist lineages arose from secondary...Ch. 18 - Prob. 4MCQCh. 18 - Why are DNA sequences useful in the classification...Ch. 18 - Explain why evolutionary biologists are interested...Ch. 18 - 2. List some examples of protist diversity. How do...Ch. 18 - Describe the relationship between nutrient...Ch. 18 - Explain why the fossil record for diatoms is much...Ch. 18 - How is it adaptive for a red alga to have pigments...Ch. 18 - Prob. 6WIOCh. 18 - Prob. 7WIOCh. 18 - Prob. 8WIOCh. 18 - Give three examples of protists for which the...Ch. 18 - Suppose someone hands you a microscope and a...Ch. 18 - Prob. 1PITCh. 18 - Molecular data have changed protist...Ch. 18 - Prob. 3PIT
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- In the pictures below, identify the arrowed reproductive structures of microscopic cyanobacteria based on the following descriptions: Akinetes are dormant structures larger than the vegetative cells, are rich in food reserves, and have thick walls. Most filamentous cyanobacteria develop akinetes in adverse conditions (e.g., winter, dry periods). When favorable conditions return, they germinate and produce new filaments. Hormogonia are short pieces of filaments consisting of 5–15 trichomes that fragment and develop into new filaments. Heterocytes (or heterocysts) are multicellular structures that have a thick and massive sheath, formed by members of the Nostocales. It is the location of the enzyme nitrogenase for nitrogen fixation, the conversion of nitrogen gas into ammonium and then amino acids. They may be intercalary or terminal in position and may germinate from either end or both the ends to give rise to new filaments. Non-filamentous cyanobacteria generally produce spores…arrow_forwardEndosymbiosis greatly altered eukaryotes as they acquired organelles. In the red algae shown below, the mitochondria is on left (solid lines), the chloroplast is in the middle (dotted lines), and the nucleus is on the right (dashed lines).arrow_forwardIn the early 1930s, G. F. Gause carried out a series of experiments using two species of ciliated protists (Paramecium), which are single-celled eukaryotic protozoans. The protists were cultured together and separately, with the bacteria being the single food source. The results are shown in the figure below. (a) Based on figure, identify and explain the interaction that is taking place between P. caudatum and P. aurelia. (b) Clam shrimp, a natural predator to P. caudatum, is introduced to the culture containing both P. caudatum and P. aurelia after 24 days. Predict the impact that the clam shrimp will have on the culture and the populations. Justify your prediction.arrow_forward
- Discuss the composition and funtion of the following parts of a flagellete - 1. Flagella 2. Sucking Disc 3. Axostyle 4. Axonemearrow_forwardDescribe the structure and function of lignin in the plant cell wall. Describe the general outline of lignin decomposition among fungi. Differentiate between the three major types of wood rots and the organisms responsible for each.arrow_forwardWhich of the following protist exhibit the discoid type of mitochondrial cristae? A. trypanosoms B. diatoms C. oomycete D. brown algaearrow_forward
- Is the cell the fundamental unit of life in plasmodial slime molds? Or is the “whole organism,” regardless of cellular composition, the fundamental unit? Explain your answer.arrow_forwardA protist that contains contractile vacuoles most likely lives ______. in ice in a marine environment in fresh water within the cells of another organismarrow_forwardSome aspects of eukaryotes are more similar to Archaea, while other aspects of eukaryotic cell composition appear more closely related to Bacteria. Explain how endosymbiosis could resolve this paradox.arrow_forward
- How can you differentiate between Giardia sp. and Trypanosoma sp.? Describe at least two visible differences between these protists.arrow_forwardOrganisms of which of the following kingdom do nothave nuclear membrane ?(a) Protista (b) Fungi(c) Monera (d) Plantae Please try to break the solutions into as many steps as practically possible and the steps should come one by one and they should be short and crisp and plagiarism-free.arrow_forwardApicomplexans evolved from a photosynthetic ancestor and have the remnant of a chloroplast. This organelle no longer acts in photosynthesis, but remains essential to the protist. Why might targeting this organelle yield an antimalarial drug with minimal side effects in humans?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning