Explanation

Rough Endoplasmic Reticulum (RER) appears granular due to the presence of ribosomes attached to its surface.

These ribosomes are responsible for protein synthesis within the cell.

Explanation

The insoluble parts of cytoplasm are mainly the organelles, which include structures like the nucleus, mitochondria, ER, etc.

Mitochondria is a type of organelle, so the broader correct term is organelles.

Explanation

Singer and Nicolson proposed the Fluid Mosaic Model in 1972 to describe the flexible, dynamic structure of the cell membrane.

It shows proteins floating in a fluid layer of phospholipids, like a "mosaic."

Explanation

The nucleolus synthesizes rRNA (ribosomal RNA), which combines with proteins to form ribosomal subunits.

These subunits later form complete ribosomes in the cytoplasm for protein synthesis.

Explanation

Observation is the second step where scientists collect facts using senses or tools.

It leads to forming a hypothesis, a possible explanation to be tested.

The Steps of the Biological Method:

1. Recognition of a problem
2. Observation
3. Hypothesis formation
4. Deduction
5. Experimentation
6. Data collection and analysis
7. Conclusion
8. Theory/law formation (if repeatedly confirmed)

Explanation

Glucose is a small sugar molecule, a simple carbohydrate, not a macromolecule.

Proteins, sucrose (a disaccharide), and fatty acids are larger or complex molecules often considered macromolecules or part of them.

Explanation

Micro molecules (or small molecules) have low molecular weight, like glucose or amino acids.

Macromolecules are large molecules like proteins, carbohydrates, and nucleic acids.

Explanation

A hypothesis is a proposed explanation or possible answer to a scientific problem.

Data are facts collected.

Conclusion is the final decision after analysis.

Explanation

• Rana tigrina, also known as the Asian giant toad or the Indian bullfrog.
• It is a species of frog found in Southeast Asia and the Indian subcontinent.

Explanation

Abdul Qasim Ali Zahravi, also known as Al-Zahrawi, is considered the father of modern surgery.

He wrote the influential medical encyclopedia Al-Tasrif, which included surgical techniques.