Cell-the unit of life practice · Medium

Select the right option which relates to Schwann regarding the following statement I. He reported that cells have a thin outer layer which is today known as plasma membrane II. Cell wall is a unique character of the plant cell III. Body of plants and animals are composed of cells and product of cells Choose the correct option from below

Cell wall consists of

The shape of chromosome is determined by?

Which of the given chromosomes appear L-shaped during anaphase?

Which of the following statements are correct? I. Human RBC is about 7.0 $\mathrm{\mu m}$ in diameter II. Cytoplasm is the main arena of cellular activities III. The shape of the cells may vary with the function they perform IV. Various chemical reactions occur in cytoplasm to keep the cell in the living state Choose the correct option

How many statements are not incorrect?

1) Schleiden gave the cell hypothesis

2) Golgi bodies are extensive and continuous with the outer membrane of the nucleus

3) Endomembranous system contains vacuoles

4) Peroxisomes coordinate with Golgi bodies

The prokaryotic cell does not contain

The common feature between chloroplast and mitochondria is

Cellulose, the most important constituent of plant cell wall is made up of

Which of the following is correct for middle lamella of eukaryotic cell?

Correct sequence of layers of bacterial cell envelope is

Assume that an actively respiring cell has 3x number of ${\mathrm{K}^ + }$ in its cytoplasm and 2x number of ${\mathrm{K}^ + }$ entered into the cell. What is the process by which K⁺ transport has taken place?

Select the incorrect statement w.r.t plasma membrane

In prokaryotic cells,

Lipid bilayer is present in

Single membranous cell organelle is

Which of the following characteristic is correct about cell of plant cells?

Which one is the correct statement about the bacterial cell envelope?

Which of the following pairs is mismatched?

In prokaryotes, chromatophores are

Which of the given cell organelles do not contain DNA?
A. Mitochondria B. Chloroplast C. Golgi complex D. Lysosome
The correct ones are

If there are 120 adenine molecules in a B-DNA double helical structure showing 20 coils, what is the number of pyrimidine nucleotides forming three hydrogen bonds in it?

Select the incorrect about minisatellites

$A:$ Metabolically active cells do not have vacuoles generally.

$R:$ Water and minerals in metabolically active cells are consumed, not to be stored.

The component of endomembrane system that may have ribosomes on its surface
a. Is specialized in the synthesis of lipids
b. Is site of protein synthesis
c. Helps in formation of plasma membrane during cytokinesis
d. Consists of cisternae, vesicle and tubules
Choose the correct one(s).

Plasmodesmata connections helps in

Choose the correct statements
I. Passive cells are larger in size
II. Larger cells have lower surface volume ratio
III. To remain active, larger cells are either cylindrical in shape or possess several extensions of the cell membrane, like microvilli
IV. Microvilli are found in all those cells, which are active in absorption
V. Microvilli (membrane infoldings) occurs in transfer cells found in plants in the region of absorption or secretion of nutrients
Option containing all correct statements is

Which of the following differentiate plant cells from animal cells?

In eukaryotes, basic structural unit made up of histone and DNA is

Which statement is not true about prokaryotes?