Explanation

The nucleus, formed by a nuclear membrane around a fluid nucleoplasm, is the control center of the cell.

Threads of chromatin in the nucleus contain deoxyribonucleic acid (DNA), the genetic material of the cell.

Explanation

The seat of memory and intelligence in the human brain is the cerebral cortex.

the cerebrum is the part that is designated as the seat of intelligence and voluntary action control. 

while

 cerebellum is part of your brain that helps coordinate and regulate a wide range of functions and processes in both your brain and body.

NA21-8-2023

Explanation

Population density is the number of people living in a unit area of the earth's surface.

It is generally expressed as per square km.

The average density of the population in the whole world is 51 persons per square km.

Explanation

• The Golgi apparatus is a membrane-bound organelle that contains enzymes.
• It is responsible for processing and modifying proteins and lipids synthesized by the endoplasmic reticulum.
• It is a key component of the cellular machinery involved in protein secretion and cell signaling.

Explanation

The central color of a rainbow is Green

ROYGBIV: This mnemonic helps remember the order of colors. 

1. Red (outermost)
2. Orange
3. Yellow
4. Green (central) 
5. Blue
6. Indigo
7. Violet (innermost) 

Explanation

Ribosomal RNA (rRNA) makes up the largest proportion of total cellular RNA. 

rRNA is the primary component of ribosomes, which are essential for protein synthesis.

It constitutes roughly 80% of the total cellular RNA. 

Explanation

• White light from the sun contains all colors of the spectrum
• The green leaf absorbs all colors except green
• It reflects green light back to your eyes
• Your eyes detect the reflected green light, making the leaf appear green

Explanation

The enzyme that synthesizes DNA,

DNA polymerase can only add nucleotides to an already existing strand or primer of DNA or RNA that is base paired with the template.

ND5-07-2023

Explanation

Skin is the external largest organ of the human body

It is a vital organ with a fleshy surface covered with hair, nerves, glands, and nails.

It covers your whole body and acts as a barrier between the outside and the inside environment.

while 

The largest solid internal organ is the liver

Explanation

There are 4 main types of movable joints in the human body:

1. Ball and Socket: Allows movement in all directions (e.g., shoulder, hip).
2. Hinge: Allows back-and-forth movement (e.g., elbow, knee).
3. Pivot: Allows rotation and side-to-side motion (e.g., neck).
4. Gliding: Allows flat bones to slide past each other (e.g., wrist, ankle).