/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 10 The presence of a membrane-enclo... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 22: Problem 10

The presence of a membrane-enclosed nucleus is a characteristic of __________ a. prokaryotic cells b. eukaryotic cells c. all cells d. viruses

Short Answer

Expert verified
The presence of a membrane-enclosed nucleus is a characteristic of eukaryotic cells.

Step by step solution

01

Understand the key term

Identify and understand what is meant by 'a membrane-enclosed nucleus'. This is a structure that contains the cell's genetic material, enclosed within a membrane.
02

Recall cell types

Remember that there are two main types of cells: prokaryotic and eukaryotic. Prokaryotic cells do not have a nucleus, while eukaryotic cells do.
03

Compare with given options

Compare the options given: a. Prokaryotic cells: do not have a membrane-enclosed nucleus. b. Eukaryotic cells: have a membrane-enclosed nucleus. c. All cells: includes prokaryotic cells, so this is not correct. d. Viruses: are not classified as cells and do not have a nucleus.
04

Choose the correct answer

Based on the comparison, the correct answer is option b, eukaryotic cells.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

prokaryotic cells
Prokaryotic cells are one of the two main types of cells. They are simpler and smaller compared to eukaryotic cells. One major characteristic of prokaryotic cells is that they lack a membrane-enclosed nucleus. Instead, their genetic material is free-floating within the cell. Other key features of prokaryotic cells include:
  • They are usually unicellular organisms.
  • They have a simpler cell structure.
  • Examples include bacteria and archaea.
Prokaryotic cells are the earliest forms of life and can be found in diverse environments.
nucleus
The nucleus is a defining feature of eukaryotic cells. It serves as the control center of the cell by housing the cell's genetic information (DNA) within a double membrane called the nuclear envelope. The nucleus has several important functions:
  • It controls gene expression and mediates the replication of DNA during the cell cycle.
  • It contains nucleolus, which is involved in ribosome production.
  • It regulates cell growth and division.
These functions are crucial for the cell to function properly and maintain its activities.
cell types
There are two primary types of cells: prokaryotic and eukaryotic. Understanding the differences and similarities between these cell types is fundamental in biology. Here are the main distinctions:
  • Prokaryotic Cells: Lack a nucleus, smaller size, simpler structure, unicellular (e.g., bacteria).
  • Eukaryotic Cells: Have a nucleus, larger size, complex structure, can be unicellular or multicellular (e.g., plants, animals, fungi).
While prokaryotic cells inhabit a wide array of environments and are essential for processes such as nitrogen fixation, eukaryotic cells form the basis of more complex organisms and have specialized organelles allowing for diverse functions.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Describe a typical prokaryotic cell. a. It has a cell wall enclosing cell membrane, cytoplasm, ribosomes and nucleoid region with genetic material. It may have a protective capsule, flagellum, pili and plasmids. b. It has a cell wall enclosing cell membrane, cytoplasm, ribosomes and nucleus containing genetic material. It may have a protective capsule, flagellum, pili and plasmids. c. It has a cell wall enclosing nuclear membrane, cytoplasm, ribosomes and nucleoid region with genetic material. It may have a protective capsule, flagellum, pili and plasmids. d. It has a cell wall enclosing nuclear membrane, cytoplasm, mitochondria, vacuoles and nucleoid region with genetic material. It may have a protective capsule, flagellum, pili and plasmids.

Identify three beneficial results of symbiotic nitrogen fixation. a. Plants benefit from an endless supply of nitrogen; soils benefit from being naturally fertilized; and bacteria benefit from using potassium from plants. b. Plants benefit from a limited supply of nitrogen; soils benefit from being naturally fertilized, and bacteria benefit from using photosynthates from plants. c. Plants benefit from an endless supply of carbon; soils benefit from being naturally fertilized; and bacteria benefit from using photosynthates from plants. d. Plants benefit from an endless supply of nitrogen; soils benefit from being naturally fertilized; and bacteria benefit from using photosynthates from plants.

Which statement comparing the prokaryotes Bacteria and Archaea is false? a. The cytoplasm of both bacterial and archaean prokaryotic cells has a high concentration of dissolved solutes. b. Osmotic pressure in both types of prokaryotic cells is relatively high. c. The domains Bacteria and Archaea differ in the use of fatty acids versus phytanal groups in their cell membranes. d. The domains Bacteria and Archaea have very similar cell wall structure.

What was the Plague of Athens? What is the modern distribution of this disease? a. The Plague of Athens was a disease caused by Yersinia pestis that killed one-quarter of Athenian troops in 430 \(\mathrm{BC}\) . Between 10 and 15 million cases of typhoid fever occur today, resulting in over \(10,000\) deaths annually. b. The Plague of Athens was a disease caused by Salmonella entericaserovar typhi that killed one- quarter of Athenian troops in 430 \(\mathrm{BC}\) . Between 5 and 10 million cases of typhoid fever occur today, resulting in over \(20,000\) deaths annually. c. The Plague of Athens was a disease caused by Yersinia pestis that killed one-quarter of Athenian troops in 430 \(\mathrm{BC}\) . Between 16 and 33 million cases of typhoid fever occur today, resulting in over \(200,000\) deaths annually. d. The Plague of Athens was a disease caused by Salmonella entericaserovar typhi that killed one- quarter of Athenian troops in 430 \(\mathrm{BC}\) . Between 16 and 33 million cases of typhoid fever occur today, resulting in over \(200,000\) deaths annually.

Which statement about the cause of resistant bacteria is false? a. The excessive use of antibiotics has resulted in the natural selection of resistant forms of bacteria. b. Antibiotics are used by patients with colds or the flu, the treatment for which antibiotics are useless. c. There is excessive use of antibiotics in livestock and in animal feed. d. Antibiotics are used by patients of different ages and the fact that their ages differ increases resistance.
See all solutions

Recommended explanations on Biology Textbooks

Biology Experiments

Read Explanation

Energy Transfers

Read Explanation

Biological Processes

Read Explanation

Cell Communication

Read Explanation

Biological Molecules

Read Explanation

Bioenergetics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.