Biology: Cell Biology-V

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Questions and Answers

Which statement is incorrect about the given diagram?

Thylakoid encloses a space called lumen

Chlorophyll present

Ribosomes are larger than cytoplasmic ribosome (correct)

Carotenoides present

Match the Cell Structure in Column-I to their Descriptions in Column-II & Column-III:

Ribosome = Von benden ER = Haeckel Lysosome = Palade Chloroplast = De duve Centrosome = Porter Peroxisome = Nicolson

Plasma membrane represents fluid nature.

True

Conversion of green tomato into red form involves?

Formation of chromoplast from chloroplast Signup and view all the answers

A network of filamentous structures present in the cytoplasm is collectively referred to as ________.

cytoskeleton Signup and view all the answers

What is the function of glyoxisome?

Fat metabolism Signup and view all the answers

Which of the following can pass through bacterial filters?

Mycoplasma Signup and view all the answers

A bivalent in metaphase-I consists of:

Two chromatids and one centromere Signup and view all the answers

Mitotic cells cycle is divided typically into four phases G1, S, G2, M. Considering mitotic cycle time as 18 hrs. The distribution of period of time (in hrs.) for each of these phase will be:

1, 3, 5, 9 Signup and view all the answers

Centromere splitting is present in:

All of these Signup and view all the answers

In which stage ER is completely disappeared:

Diakinesis Signup and view all the answers

Which one of the following stage is longest:

Prophase Signup and view all the answers

Select the incorrect statement:

Genetic material is present in well defined nucleus in both prokaryotes and eukaryotes Signup and view all the answers

The eukaryotic ribosomes are 80S type where 'S' is indirectly measure of:

Structure of rRNA Signup and view all the answers

The structure which are extensive continuous with the outer nuclear membrane:

RER Signup and view all the answers

Which one of the following is wrong w.r.t.cis face of golgi body:

Convex Signup and view all the answers

Which statements are wrong:

A,B,C only Signup and view all the answers

Vesicle is form from ER after packaging of material is fused with:

trans face of golgi body Signup and view all the answers

Mitochondria is mainly related with:

aerobic respiration Signup and view all the answers

Golgibody is the important site of formation of:

glycoprotein & glycogen Signup and view all the answers

Axoneme of cilia and flagella is made up of:

Tubulin protein Signup and view all the answers

Basal body of cilia and flagella consists:

9 + 2 arrangement of microtubules Signup and view all the answers

In which phase chromosomes are generally observed:

B Signup and view all the answers

Nucleus, Golgi complex and ER are reformed in:

Telophase Signup and view all the answers

Which of the following statement is wrong:

Meiosis-II is also called equational division Signup and view all the answers

Which one of the following is permanently found in quiescent stage of cell cycle:

All of these Signup and view all the answers

Stage between meiosis-I and meiosis-II is called:

Interkinesis Signup and view all the answers

Which phase of cell cycle is completed in more than 95% duration of cell cycle:

Interphase Signup and view all the answers

Study Notes

Here are the study notes for Cell Biology-V:

Cell Organelles

Carotenoids and Chlorophyll: Carotenoids are present in chromoplasts, while chlorophyll is present in chloroplasts.
Thylakoid: A thylakoid encloses a space called the lumen.

Ribosomes

Size: Ribosomes are larger than cytoplasmic ribosomes.
Location: Ribosomes are found in the cytoplasm, nucleus, and ER.

Lysosomes

Function: Lysosomes are involved in digestion and are a part of the endomembrane system.

Endoplasmic Reticulum (ER)

Functions: ER helps in transport of substances, synthesis of proteins, and formation of glycogen.
Types: There are two types of ER: Rough ER (RER) and Smooth ER (SER).

Golgi Body

Function: Golgi body is involved in protein synthesis, lipid synthesis, and formation of glycoproteins and glycogen.
Structure: Golgi body has a cis face (forming face) and a trans face (mature face).

Mitochondria

Function: Mitochondria are involved in aerobic respiration and are the site of cellular respiration.
Structure: Mitochondria have an outer membrane and an inner membrane, with cristae (infoldings) increasing the surface area.

Cilia and Flagella

Structure: Axoneme of cilia and flagella is made up of tubulin protein, and the basal body consists of 9 + 2 arrangement of microtubules.

Cell Cycle

Metaphase: Chromosomes are arranged at the equator of the cell in metaphase.
Anaphase: Sister chromatids separate and move to opposite poles in anaphase.
Telophase: The nucleus, Golgi complex, and ER are reformed in telophase.

Centromere

Function: The centromere is involved in the separation of sister chromatids during cell division.
Splitting: Centromere splitting occurs in anaphase-II.

Cell Membrane

Functions: Plasma membrane performs certain functions like growth, endocytosis, formation of intercellular junctions, and cell division.
Fluid Nature: Plasma membrane represents fluid nature.

Glyoxisome

Function: Glyoxisome is involved in fat metabolism.

Hydrolytic Enzymes

Location: Almost all hydrolytic enzymes are present in lysosomes.

Cell Wall

Function: Cell wall provides mechanical support, maintains cell shape, and protects the cell from external factors.

Prophase

Events: ER is completely disappeared in prophase.

Let me know if you'd like me to add anything else!### Cell Cycle

Quiescent stage of the cell cycle is permanently found in nerve cells (raf=kdk dksf'kdk).

Stages of Cell Cycle

The stage between meiosis-I and meiosis-II is called interkinesis (baVjdkbusfll).
Interphase (varjkoLFkk) is not the stage between meiosis-I and meiosis-II.

Duration of Cell Cycle Phases

Interphase (varjkoLFkk) is the phase of the cell cycle that is completed in more than 95% of the cell cycle duration.

Cell Growth

During interphase (varjkoLFkk), the volume of the cell increases to its maximum.

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Description

Quiz on cell biology, covering topics such as cell structure, organelles, and pigments. Questions include multiple choice and matching type questions.