Nucleus in Cell

Q.

What are the similarities between plants and animal?

Q. Which of the following are unicellular organisms?

1. Chlamydomonas
2. Amoeba
3. Fish
4. Paramecium

Q.

What are those structures that appear as beads-on-string in the chromosomes when viewed under electron microscope?

1. base pairs

2. genes

3. nucleotides

4. nucleosomes

Q.

Which of the following are not membrane-bound?

1. Vacuoles

2. Lysosomes

3. Ribosomes

4. Mesosomes

Q.

Which of the following structure is found inside the nucleus?

1. Mitochondria

2. Nucleolus

3. Lysosomes

4. Chloroplast

Q.

Why does the nucleus have a double membrane?

Q.

Cells with a well-defined nucleus are called______a_____and cells without a well-defined nucleus are called_____b_____.

1. a. unicellular b. multicellular

2. a. prokaryote b. eukaryote

3. a. eukaryote b. prokaryote

4. a. multicellular b. unicellular

Q.

There may be one or more nucleolus found inside the nucleus.

1. True

2. False

Q.

Which of the following are produced by the nucleolus?

1. Golgi bodies

2. Lysosomes

3. Ribosomes

4. Vacuoles

Q.

What is the meaning of plant cells?

Q.

Haploid cell contains a set of …………… chromosomes like human cell.

1. 23

2. 46

3. 92

4. 12

Q. ___ is a membrane-bound structure that contains the cell’s hereditary information.

1. Mitochondria
2. Vacuole
3. Nucleus
4. Cytoplasm

Q.

A single human skin cell after undergoing a single mitotic division would produce

1. Two cells with 46 chromosomes

2. Two cells with 23 chromosomes

3. Four cells with 46 chromosomes

4. Four cells with 23 chromosomes

Q.

If the nucleus from another amoeba is transplanted to enucleated amoeba, the recipient survives and divides and while the donor amoeba (enucleated) dies. This experiment shows that

1. Mitochondria are essential for normal life

2. Amoeba does not require any organelle for its survival

3. Ribosomes are essential for normal life

4. The nucleus is essential for normal life

Q.

Which of the following is the largest cell?

1. Emu egg

2. Ostrich egg

3. Penguin egg

4. Peacock egg

Q.

Which of the following statement(s) is/are incorrect regarding prokaryotes?
(i) They lack a nucleus
(ii) Amoeba is prokaryotic
(iii) DNA in prokaryotes is generally circular
(iv) Prokaryotes are unicellular organisms

1. (i) and (ii)
2. (ii) only
3. (i), (ii) and (iv)
4. (iv) only

Q.

___ is involved in the synthesis and storage of RNA.

1. Golgi apparatus

2. Mitochondrion

3. Nucleolus

4. Ribosome

Q.

The nucleolus is found only in plant cells.

1. False

2. True

Q.

Nucleus was discovered by _________.

1. Robert Brown

2. Robert Hooke

3. A.V. Leeuwenhoek

4. Schwaan

Q. There are ___ pairs of chromosomes a human nerve cell possesses.

1. 23
2. 44
3. 46
4. 22

Q.

describe the prophase I stage of meiosis using homologous chromosomes, synapsis, crossing over and chiasmata.

what is the significance of second meiotic division.

Q.

Kitchen of the cell is

1. Mitochondrion

2. Chloroplast

3. Endoplasmic reticulum

4. Golgi apparatus

Q.

What is the correct labelling for this part?

1. Nucleus

2. Nucleolus

3. Nuclear membrane

4. Nuclear pore

Q.

These are called the powerhouse of the cell.

1. Mitochondria

2. Ribosomes

3. Nucleus

4. Cytoplasm

Q.

In which of the following organisms the nuclear material is not bound by a membrane?

1. Amoeba

2. Fungi

3. Humans

4. Bacteria

Q.

How many layers are present on the nuclear membrane?

1. 1

2. 2

3. 3

4. 4

Q.

Nucleolus is a -

1. Round structure composed of rRNA situated in the nucleus

2. Round structure present near the nucleus in cytoplasm

3. Rod-shaped structure present near the nucleus in the cytoplasm

4. None of these

Q. What is a chromosome? How is it related to genes?

Q. The short and thick structure found in a nucleus which contains the genetic material and is only visible during cell division is called ___ .

1. Chromosome
2. Ribosome
3. Lysosome
4. DNA

Q.

___ is a membrane-bound structure that contains the cell’s hereditary information.