Tag: nucleus and chromosome

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Questions Related to nucleus and chromosome

Multiple choice botany the mitotic cell cycle chromosome and its structure chromosome nucleus and chromosome

Chromatid is

  1. One half of chromosome

  2. Haploid chromosome

  3. Complete chromosome

  4. Duplicate chromosome
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
1) A chromatid is one-half of two identical copies of a replicated chromosome. During cell division, the identical copies are joined together at centromere. Joined chromatids are known as sister chromatids. Once the joined sister chromatids separate from one another in anaphase of mitosis, each is known as a daughter chromosome.

2) In gamete cells, the cell contains half the number of chromosomes as body cells, are called Haploid chromosomes.

3) Body cells such as muscle,skinblood etc. These cells contains a complete set of chromosomes (46 in humans),are called Diploid or complete chromosomes.

So, the correct answer is 'One half of chromosome'.
Multiple choice botany the mitotic cell cycle chromosome and its structure chromosome nucleus and chromosome

The nuclear component that contains genes which are responsible for heredity or transfer of characteristics from parents to children is/are

  1. the Chromosomes

  2. the Cytoplasm

  3. the Nucleolus

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The chromosomes are thread-like structures which can be seen enclosed in a cell nucleus. These chromosomes contain genes which are responsible for the transfer of characteristics from parents to the children.

Multiple choice botany the mitotic cell cycle chromosome and its structure chromosome nucleus and chromosome

Choose the correct statement.

  1. Genes are located in the chromosomes

  2. Cell is locked in the nucleus

  3. Chromosomes are located in the nucleolus

  4. Cell membrane surrounds the nucleus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The chromosomes are the condensed chromatin. They are made up of DNA and proteins Those sequences of DNA that code for proteins are called the genes. 

A. Genes are the segment of DNA that is located in the chromosome. The location of a gene on a chromosome is called the locus.
B. Nucleus is an organelle present inside the cell.
C. Nucleolus is the region on chromosomes that forms the ribosomal RNA.
D. Nuclear membrane surrounds the nucleus. Cell membrane surrounds the cell.
Hence, the correct answer is 'Genes are located in the chromosomes'

Multiple choice botany the mitotic cell cycle chromosome and its structure chromosome nucleus and chromosome

Chemical composition of chromosome : 

  1. DNA and lipids

  2. DNA and carbohydrates

  3. Proteins and lipids

  4. DNA and proteins
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The chemical composition of a chromosome is DNA and proteins(histone). Because chromosome is a supercoiled structure made up by coiling of DNA on the proteins like histone

So the correct option is"DNA and Proteins".

Multiple choice botany the mitotic cell cycle chromosome and its structure chromosome nucleus and chromosome

Study of _________ helps in the determination of phylogeny and taxonomy.

  1. Chromosomes

  2. Cytoplasm

  3. Nucleoplasm

  4. Sarcoplasm
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chromosomes contain the genetic material that is conserved and modified over evolutionary time. By comparing chromosome structures and gene sequences, scientists can determine evolutionary relationships (phylogeny) and classify organisms (taxonomy).