Concept explainers
Introduction:
The cell is the basic “fundamental unit” of life. Every organism present in the environment is composed of cell. Cells perform a number of important activities that help in the survival of an organism. These activities are known as cellular activities.

Answer to Problem 1SQ
Correct answer:
All the cells have three basic structures. These are plasma membrane, cytoplasm, and DNA. Hence, the correct answer is option c.
Explanation of Solution
Reason for correct answer:
Option c. is given as “cytoplasm, DNA, and a plasma membrane.”
Every cell contains three basic structures that form a complete cellular unit. These three structures are:
• Plasma membrane:
The outer layer of cell that acts as a barrier is known as the plasma membrane. It surrounds all the cellular units and protects them from the external environment.
• Cytoplasm:
It is the middle layer of the cell. All the internal components of the cell are present in the cytoplasm.
• DNA:
DNA stands for “Deoxyribonucleic acid.” It is the genetic material present in the organisms that guide them to perform all the cellular activities.
Therefore, every cell contains these three basic units (plasma membrane, cytoplasm, and DNA).
Reason for incorrect answer:
Option a. is given as, “cytoplasm, DNA and, organelles with membranes.”
Every cell contains cytoplasm and DNA. The cell can have two types of organelles, one with membrane and other without a membrane. This indicates that it is not necessary that a cell contains an organelle with a membrane. Hence, option a. is incorrect.
Option b. is given as, “a plasma membrane, DNA, and a nuclear envelope.”
Plasma membrane and DNA are two important components that are present in every cell. However, it is not necessary that every cell has a nuclear envelope. For example, prokaryotes lack nuclear envelope but eukaryotes contain a well-defined nuclear membrane. Hence, option b. is incorrect.
Option d. is given as, “a cell wall, cytoplasm, and DNA..”
Every cell contains a cell wall and DNA. However, every cell does not contain a cell wall. For example, the plant cell has a cell wall but animal cells lack a cell wall. Hence, option d. is incorrect.
Hence, the options a., b., and d. are incorrect.
The three basic components present in every cell are cytoplasm, plasma membrane, and DNA. Thus, the correct option is c.
Want to see more full solutions like this?
Chapter 4 Solutions
EBK BIOLOGY: CONCEPTS AND APPLICATIONS
- ✓ Details Draw a protein that is embedded in a membrane (a transmembrane protein), label the lipid bilayer and the protein. Identify the areas of the lipid bilayer that are hydrophobic and hydrophilic. Draw a membrane with two transporters: a proton pump transporter that uses ATP to generate a proton gradient, and a second transporter that moves glucose by secondary active transport (cartoon-like is ok). It will be important to show protons moving in the correct direction, and that the transporter that is powered by secondary active transport is logically related to the proton pump.arrow_forwarddrawing chemical structure of ATP. please draw in and label whats asked. Thank you.arrow_forwardOutline the negative feedback loop that allows us to maintain a healthy water concentration in our blood. You may use diagram if you wisharrow_forward
- Give examples of fat soluble and non-fat soluble hormonesarrow_forwardJust click view full document and register so you can see the whole document. how do i access this. following from the previous question; https://www.bartleby.com/questions-and-answers/hi-hi-with-this-unit-assessment-psy4406-tp4-report-assessment-material-case-stydu-ms-alecia-moore.-o/5e09906a-5101-4297-a8f7-49449b0bb5a7. on Google this image comes up and i have signed/ payed for the service and unable to access the full document. are you able to copy and past to this response. please see the screenshot from google page. unfortunality its not allowing me attch the image can you please show me the mathmetic calculation/ workout for the reult sectionarrow_forwardIn tabular form, differentiate between reversible and irreversible cell injury.arrow_forward
- 1.)What cross will result in half homozygous dominant offspring and half heterozygous offspring? 2.) What cross will result in all heterozygous offspring?arrow_forward1.Steroids like testosterone and estrogen are nonpolar and large (~18 carbons). Steroids diffuse through membranes without transporters. Compare and contrast the remaining substances and circle the three substances that can diffuse through a membrane the fastest, without a transporter. Put a square around the other substance that can also diffuse through a membrane (1000x slower but also without a transporter). Molecule Steroid H+ CO₂ Glucose (C6H12O6) H₂O Na+ N₂ Size (Small/Big) Big Nonpolar/Polar/ Nonpolar lonizedarrow_forwardwhat are the answer from the bookarrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning


