Concept explainers
Introduction:
Cells are the smallest unit in every single living being. In a group, they carry all the functions to sustain life.
They are the building blocks for animals and plants to live and sustain life.

Answer to Problem 1DYKB
Correct Answer: option (C) Replacing cells through cell division.
Explanation of Solution
Explanation/justification for the correct answer:
Option c. Replacing cells through cell division.
Some cells such as neurons or in plant tissues like parenchyma cells do not perform cell division. These cells can survive without performing cell division. In the case of parenchyma cells, which are also called permanent tissues, they provide structural support to the plant.
The explanation for the incorrect answer:
Option a. Obtaining nutrients and chemical building blocks.
Cells obtain nutrients like sugar or fat; they do this to provide the cell with energy. This function is necessary for all types of cells to keep functioning.
Option b. Maintaining the integrity of the plasma membrane.
Maintaining plasma membrane integrity is essential for cellular homeostasis.
The cell membrane receives damage from the intracellular and extracellular environment to avoid lethal consequences maintaining the integrity of the cell membrane is important.
Option d. Disposing types of wastes.
For cells to function properly, the disposal of waste is necessary.
Want to see more full solutions like this?
Chapter 4 Solutions
ANATOMY & PHYS. CONNECT CARD 540 DAY
- 1. Match each vocabulary term to its best descriptor A. affinity B. efficacy C. inert D. mimic E. how drugs move through body F. how drugs bind Kd Bmax Agonist Antagonist Pharmacokinetics Pharmacodynamicsarrow_forward50 mg dose of a drug is given orally to a patient. The bioavailability of the drug is 0.2. What is the volume of distribution of the drug if the plasma concentration is 1 mg/L? Be sure to provide units.arrow_forwardDetermine Kd and Bmax from the following Scatchard plot. Make sure to include units.arrow_forward
- Choose a catecholamine neurotransmitter and describe/draw the components of the synapse important for its signaling including synthesis, packaging into vesicles, receptors, transporters/degradative enzymes. Describe 2 drugs that can act on this system.arrow_forwardThe following figure is from Caterina et al. The capsaicin receptor: a heat activated ion channel in the pain pathway. Nature, 1997. Black boxes indicate capsaicin, white circles indicate resinferatoxin. a) Which has a higher potency? b) Which is has a higher efficacy? c) What is the approximate Kd of capsaicin in uM? (you can round to the nearest power of 10)arrow_forwardWhat is the rate-limiting-step for serotonin synthesis?arrow_forward
- Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningHuman Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
- Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage LearningHuman Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning



