Explanation

Microfilaments (mainly made of actin) are responsible for cell movements like cyclosis (cytoplasmic streaming) and amoeboid movement.

They help in changing cell shape, enabling movement in amoebas and streaming in plant cells.

Explanation

Explanation

In the story (likely from a science fiction narrative involving the landing of a spaceship).

The spaceship is described as golden, highlighting its majestic, mysterious, or otherworldly appearance

This detail helps to create a sense of awe and significance.

Explanation

In the story (likely referring to a war-time or storm-related narrative).

It is Ellen who suggests going to the cellar, likely as a place of safety or shelter.

This reflects her awareness of danger and desire to protect others.

Explanation

The total resistance (R) in the series circuit is:

R = 5 + 10 + 10

= 25 Ω

The current (I) is given by Ohm's law:

I = V/R

= 50V / 25Ω

= 2A

Explanation

Apparent weight = Normal force, and when moving upward with acceleration g, total acceleration = g + g = 2g.

So, Apparent weight = m × (g + g) = 2mg.

Explanation

Nitrogen makes up about 3% of the human body by mass.

It is mostly found in proteins, DNA, and RNA.

It is essential for building amino acids and nucleic acids in the body.

Explanation

The phrase “placed on the table” means the book is resting directly on the surface.

"On" correctly shows contact between the book and the table.

Explanation

Sodium (Na) and Chlorine (Cl) together make up about 0.45% of the human body mass.

They are essential electrolytes that help regulate fluid balance, nerve function, and muscle activity.

Explanation

Chloroform is classified as a possible human carcinogen, particularly linked to liver and kidney cancer with prolonged exposure.

It affects the liver by causing cellular damage.

It has been shown to induce tumors in animal studies.