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Chapter 1: Problem 40

Which of the following cell lacks nucleus? (a) Mature RBC (b) Mature WBC (c) Neutrophils (d) Paramoecium

Short Answer

Expert verified
Answer: (a) Mature Red Blood Cells (RBCs)

Step by step solution

01

Identifying the Role of a Nucleus

A nucleus is an important organelle in eukaryotic cells, containing genetic information and regulating various cellular processes. Identifying which of the listed cell types lacks a nucleus will help in answering the question.
02

Analyzing Each Cell Type

(a) Mature Red Blood Cells (RBCs) - RBCs transport oxygen throughout the body. Interestingly, mature mammalian RBCs lose their nuclei during development to make space for more oxygen-carrying hemoglobin. (b) Mature White Blood Cells (WBCs) - WBCs play a vital role in immunity, and all types of WBCs contain a nucleus. (c) Neutrophils - These are a type of White Blood Cell. As mentioned in Step 2b, WBCs have nuclei, and so do neutrophils. (d) Paramoecium - Paramoecium is a single-celled organism, a type of eukaryotic microorganism. It contains a nucleus.
03

Determining the Cell Lacking a Nucleus

Based on the analysis in step 2, the only cell type that lacks a nucleus is the Mature Red Blood Cell (RBC).
04

Selecting the Correct Answer

As determined in step 3, the cell that lacks a nucleus is the Mature RBC. Thus, the correct option is (a) Mature RBC.

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Most popular questions from this chapter

Select the correct statements. A. Ribosomes are covered by a double-layered membrane. B. Ribosomes are composed of RNA and proteins.

Which of the following is the correct statement? (a) Endoplasmic reticulum is the site of protein manufacture in bacteria.(b) The membrane-bound inclusion bodies help in the storage of nutrients in prokaryotes. (c) The living material inside the cell is called protoplasm. (d) Mesosome is the cell wall extension that helps in photosynthesis.

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