BIOLOGY: CONCEPTS&INVEST. (LL)
BIOLOGY: CONCEPTS&INVEST. (LL)
5th Edition
ISBN: 9781264706983
Author: Hoefnagels
Publisher: MCG
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 18, Problem 1MCQ

Which of the following is NOT a characteristic of all protists?

  1. a. Unicellular
  2. b. Cells containing membrane-bounded organelles
  3. c. Cells containing a nucleus
  4. d. Eukaryotic
Expert Solution & Answer
Check Mark
Summary Introduction

Introduction:

Protists are single celled eukaryotes. A few forms are multicellular. Protists often have cellular organelles and they demonstrate both animal and plant like characteristics. Protists can be heterotrophic or autotrophic.

Answer to Problem 1MCQ

Correct answer:

The protists can be multicellular like algae, kelp or seaweed that feed, provide shelter, and oxygen for numerous underwater ecosystem. Therefore, option a. is correct.

Explanation of Solution

Reason for the correct statement

Protista is a eukaryotic unicellular or multicellular organisms that have membrane bound organelles and nucleus. Protists can be heterotrophic, autotrophic or saprotrophic and divided into three major groups; protozoans, algae, and fungus- like protists.

Option a. is given as “unicellular”.

As, “most of the protists are unicellular, for example Paramecium; some are small multicellular colonies, for example Volvox; and some are large multicellular colonies, for example Kelp”, is the right answer.

Hence, option a. is correct.

Reasons for the incorrect statements:

Option b. is given as “cells containing membrane-bounded organelles”.

Protists are made up of eukaryotic cells and each cell contains the membrane bound organelles. So, it is a wrong answer.

Option c. is given as “cell containing a nucleus”.

Protists are made up of eukaryotic cells, each cell containing nucleus and other organelles. So, it is a wrong answer.

Option d. is given as “eukaryotic”.

Protists are the simplest eukaryotic cell that can be unicellular or multicellular. So, it is a wrong answer.

Hence, options b., c., and d., are incorrect.

Conclusion

Protists are the eukaryotic organisms that include all the eukaryotes except for the plants, fungi, animals.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Question #3: In the KeyGene paper, the authors state that it would be useful if pollen from an apomict would transmit apomixis-inducing genes to the female in the cross (assuming the pollen is viable). Assuming there was just one gene conferring gametophytic obligate apomixis, and that the two parents are inbreds, what would be the consequences of such a cross if: a) The apomixis was a dominant trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the parental cross. b) The apomixis was a recessive trait? Indicate the genotypes and phenotypes (apomict or non- apomict) of the parents, F1 and F2 generations. Remember to include the expected genotypic and phenotypic ratios (or percentages) in the F1 and F2 generations, and to position the female first (left side) in the…
Question #5: Assume that two genes are identified that confer gametophytic facultative apomixis in soybean. The genes show independent assortment. Recessive alleles at both loci are required for the facultative apomixis. Facultative apomixis is triggered when the temperature at pollination is above 20 degrees C. At temperatures below 20 degrees C, all reproduction is sexual, independent of genotype. A facultative apomict male, capable of producing viable pollen, was crossed with a sexually reproducing female. Assuming the parents are completely inbred, what are the predicted phenotypic ratios (apomict: non-apomict) for the F1, F2, and DH (F1-derived) generations at each of the following temperatures*: a) 15°C? b) 25°C? *for full credit, show crosses and genotypes where appropriate. Remember to position the female first (left side) in the cross. Type your answer here:
a. What percentage of a drug is eliminated after 4 half-lives? Please round to the nearest percent.  b. What will happen to elimination of the drug in the previous question if the system is saturated? explain and show any math involved
Knowledge Booster
Background pattern image
Biology
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
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Text book image
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Text book image
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Text book image
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Text book image
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Explore Terrestrial Habitats - Types of Habitats for Children; Author: Smile and Learn - English;https://www.youtube.com/watch?v=vv1indKgOHQ;License: Standard youtube license