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.
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Chapter 4 Solutions
ANAT & PHYS (LL W/ACCESS)(CUSTOM)
- The plasma membrane __________. a. surrounds the cytoplasm b. separates the nucleus from the cytoplasm c. separates the cell interior from the environment d. both a and carrow_forwardCell membranes consist mainly of a _________. a. carbohydrate bilayer and proteins b. protein bilayer and phospholipids c. phospholipid bilayer and proteinsarrow_forwardTo determine:Whether the life of a cell ends after mitosis and cytoplasmic division.Introduction:Ever 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. Mitosis and cytoplasmic division are types of reproduction.arrow_forward
- The major function of the plasma membrane is to: define the structure of the organelles. provide genetic information for the cell. synthesize chemicals for metabolism. regulate the passage of molecules and ions.arrow_forwardWhich is NOT a general function of the cellular cytoskeleton? Regulation of intracellular transport Regulation of cell motility and cellular contraction Assembly of DNA into chromatin Separation of the chromosomes during mitosis Structural support for the cellarrow_forwardWhich of the following correctly predicts what would happen to a body cell if its processes were interrupted during mitosis? Top of Form Cells would begin dividing uncontrollably. Chromosomes would not separate into two nuclei. Cytokinesis would occur more rapidly. The cell would not be able to grow any further.arrow_forward
- Which type of cells (prokaryotic or eukaryotic) have ALL of the above organelles?arrow_forwardMicrovilli are commonly seen in cells involved in absorption of materials (like intestinal cells) because: none of the above they move cells forward they produce greater surface area of plasma membrane they move substances forwardarrow_forwardThe main arena of various types of activities of a cell is: A Nucleus B Plasma membrane C Mitochondria D Cytoplasmarrow_forward
- Which of the following can diffuse most easily through the cell membrane? N2 Ca++ glucose The hormone glucagon (a protein)arrow_forwardList their functions Cytoplasm, nucleoplasm/karyoplasm Ribosomes: protein factories of the cell Centrosomes and centrioles: helpers in cell division Cytoskeleton: microfilaments, microtubules, intermediate filamentsarrow_forwardThe functions of the cell part labeled “Z” include —arrow_forward
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