Concept explainers
Introduction:
Every organisms present in the environment contains cell. The cell is the basic “fundamental unit” of life. Cell performs a number of important functions. These are termed as cellular activities. Reproduction is also an important cellular activity. All the new cells are formed from the old cell. The process by which a cell produces its progenies is termed as reproduction.
Answer to Problem 1SA
Correct answer:
The single-celled prokaryotes reproduce asexually by mitosis and cytoplasmic division. Hence, the correct answer is option a.
Explanation of Solution
Reason for correct answer:
Option a. is given as “asexual reproduction of single-celled prokaryotes”.
The prokaryotes are simple organisms that lack a well-defined nucleus. The genetic material in prokaryotes lies freely in the cytoplasm. The unicellular prokaryotes reproduce asexually through mitosis and cytoplasmic division. Mitosis is a process in which the nucleus of the cell divides. Mitosis has the capability to maintain the number of chromosomes present inside the nucleus. The cytoplasmic division is the process in which the cytoplasm of the parental cell divides into two equal parts. These two parts are termed as daughter cells.
Reason for incorrect answer:
Option b. is given as, “development and tissue repair in multicelled species”.
Mitosis and cytoplasmic division are the methods of asexual reproduction. Mitosis is also involved in the development and tissue repair mechanisms in some multicellular organisms. However, the cytoplasmic division has no role in the development and tissue repair mechanism. Hence, option b. is incorrect.
Option c. is given as, “sexual reproduction in plants and animals”.
Mitosis and cytoplasmic division are the two ways of asexual reproduction. This indicates that mitosis and cytoplasmic division are not the methods of sexual reproduction. Hence, option c. is incorrect.
Hence, the options b., and c. are incorrect.
Mitosis and the cytoplasmic division are the two ways in which a unicellular prokaryote reproduces asexually. Thus, the correct option is a.
Want to see more full solutions like this?
Chapter 11 Solutions
Biology: Concepts and Applications (MindTap Course List)
- Which eukaryotic cell-cycle event is missing in binary fission? a. cell growth b. DNA duplication c. mitosis d. cytokinesisarrow_forwardThe individual chromosomes become visible with a light microscope during which stage of mitosis? a. prophase b. prometaphase c. metaphase d. anaphasearrow_forwardSeparation of the sister chromatids is a characteristic of which stage of mitosis? a. prometaphase b. metaphase c. anaphase d. telophasearrow_forward
- Please answer the question:arrow_forwardWhich of the following is true? a. Prokaryotic cells are smaller in size but metabolically more complicated. b. Eukaryotic cells are compartmentalized and with the DNA (genetic material) found in the nuceloid.arrow_forwardDuring cytokinesis, a contractile ring of actin microfilament forms the ______________ and pinches the cell apart. A. Kinetochores B. Cleavage furrow C. Equator D. Astersarrow_forward
- The phases of cell cycles in order are O a. Metaphase, anaphase, telophase, interphase, prophase and cytokinesis O b. Metaphase, anaphase, interphase, prophase, telophase and cytokinesis O c. Interphase, telophase, cytokinesis, prophase, metaphase and anaphase O d. Cytokinesis, telophase, anaphase, metaphase, prophase and interphase O e. Anaphase, telophase, cytokinesis, interphase, prophase and metaphase O f. Interphase, prophase, metaphase, anaphase, telophase and cytokinesis g. Prophase, interphase, metaphase, anaphase, telophase and cytokinesis What is the purpose of using sodium bicarbonate (NaHCO3) in the photosynthesis experiment? a. None of the other choices is valid O b. To provide dissolved dissolved 02 O c. To provide dissolved dissolved CO2 O d. To provide dissolved waterarrow_forwardWrite the phase of mitosis that matches each phrase:a. Nuclear envelope disappearsb. Chromosome are first visiblec. Nuclear envelope reformsd. Chromosomes move towards opposite poles of the celle. Spindle fibers appearf. Cytoplasm dividesg. Sister chromatid, line up along equator of the cellarrow_forwardMany simple eukaryotes reproduce by asexual reproduction, using only mitosis. Assuming the environment is stable and the organism is well adapted to its environment, why is this a better form of reproduction for these organisms?arrow_forward
- The ____ is located outside the cell wall in a prokaryotic cell.a. nucleoid b. nucleus c. capsuled. ribosomearrow_forwardUse the table below to answer the questions about mitosisarrow_forwardWhen comparing a eukaryotic organism with a prokaryotic organism, which of the following statements is TRUE? A. Eukaryotic organelles reproduce sexually, while prokaryotic organisms reproduce asexually B. The cells of eukaryotic organisms have membrane-bound nuclei while the cells of prokaryotic organism do not. C. Eukaryotic organisms need oxygen while prokaryotic organism do not. D. Prokaryotic organisms can make their own food while eukaryotic organisms cannot. E. Eukaryotic and prokaryotic organisms are actually one and the same variation in terminologies can be attributed to exactly ambiguity.arrow_forward
Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning