Cell Organelles

Front

Which organelle is found only in plant cells?

Back

Chloroplast

Answer explanation

The chloroplast is an organelle unique to plant cells, responsible for photosynthesis. Unlike the nucleus, mitochondria, and cell membrane, which are found in both plant and animal cells, chloroplasts are specific to plants.

Front

Directs all cell activities through the DNA located there.

Back

Nucleus

Answer explanation

The nucleus directs all cell activities by housing the DNA, which contains the genetic instructions necessary for the cell's functions. Other organelles like lysosomes, ribosomes, and mitochondria have specific roles but do not control cell activities.

Front

Which of the following is directly involved in the transportation of proteins after chemical modification within the cell? Options: Endoplasmic Reticulum, Vacuole, Lysosome, Mitochondria

Back

Endoplasmic Reticulum

Answer explanation

The Endoplasmic Reticulum (ER) is a network of membranes involved in the transportation of materials within the cell, including proteins and lipids. It plays a crucial role in cellular processes, unlike vacuoles, lysosomes, or mitochondria.

Front

I am a protein packaging and shipping machine after I have chemically modified the protein. Who am I?

Back

Golgi apparatus

Answer explanation

The golgi apparatus is responsible for modifying, packaging, and shipping proteins within the cell, making it the correct answer. Other options like ribosomes and mitochondria have different functions.

Front

Which organelle contains enzymes that digest molecules to recycle?

Back

lysosomes

Answer explanation

Lysosomes are often referred to as the cell's 'recyclers' or 'trash collectors' because they contain digestive enzymes that break down waste materials and cellular debris, making them the correct answer.

Front

Where is DNA stored?

Back

Nucleus

Answer explanation

The question describes DNA, which is a double helix structure found in the nucleus and contains the genetic blueprint for making proteins. The other options do not fit this description.

Front

What is found in both plant and animal cells but is much larger in plant cells?

Back

Vacuole

Answer explanation

The vacuole is found in both plant and animal cells, but it is much larger in plant cells. It serves as a storage space for nutrients and waste products, helping maintain turgor pressure in plants.

Front

Where are proteins made?

Back

Ribosomes

Answer explanation

Proteins are made in ribosomes, the cellular structures responsible for translating messenger RNA into polypeptide chains. mRNA gets the instructions to make proteins from DNA. The Golgi body modifies proteins, while mitochondria and chromosomes are not directly involved in protein synthesis.

Front

This organelle converts food into energy for both plant and animal cells.

Back

Mitochondria

Answer explanation

The mitochondria are known as the powerhouse of the cell, as they convert food into energy through cellular respiration. Chloroplasts are involved in photosynthesis, while lysosomes and ribosomes have different functions.

Front

The site of photosynthesis

Back

Chloroplast

Answer explanation

Chloroplasts are the organelles in plant cells where photosynthesis occurs, converting light energy into chemical energy. Ribosomes synthesize proteins, mitochondria produce energy, and the nucleus contains genetic material, but none are sites of photosynthesis.