International Biology Olympiad (IBO)

Description: This quiz covers various topics related to biology, suitable for the International Biology Olympiad (IBO).
Number of Questions: 15
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Tags: biology international biology olympiad ibo
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Which of the following is a characteristic of prokaryotic cells?

  1. They have a nucleus.

  2. They have membrane-bound organelles.

  3. They have a cell wall.

  4. They have a cytoskeleton.


Correct Option: C
Explanation:

Prokaryotic cells, unlike eukaryotic cells, do not have a nucleus or membrane-bound organelles. They do have a cell wall, which provides structural support and protection.

What is the function of the Golgi apparatus?

  1. It packages and distributes proteins.

  2. It produces ribosomes.

  3. It generates ATP.

  4. It synthesizes lipids.


Correct Option: A
Explanation:

The Golgi apparatus is responsible for packaging and distributing proteins, as well as modifying and sorting them for transport to their final destinations.

Which of the following is a type of asexual reproduction?

  1. Binary fission

  2. Budding

  3. Fragmentation

  4. All of the above


Correct Option: D
Explanation:

Binary fission, budding, and fragmentation are all types of asexual reproduction, where a single parent organism gives rise to genetically identical offspring.

What is the role of enzymes in biological reactions?

  1. They increase the activation energy of reactions.

  2. They decrease the activation energy of reactions.

  3. They provide energy for reactions.

  4. They consume energy during reactions.


Correct Option: B
Explanation:

Enzymes act as catalysts in biological reactions, decreasing the activation energy required for the reaction to occur, thus facilitating and accelerating the reaction.

Which of the following is NOT a greenhouse gas?

  1. Carbon dioxide

  2. Methane

  3. Nitrogen

  4. Water vapor


Correct Option: C
Explanation:

Nitrogen is not a greenhouse gas, as it does not absorb and trap heat in the atmosphere like carbon dioxide, methane, and water vapor do.

What is the process by which plants convert light energy into chemical energy?

  1. Photosynthesis

  2. Cellular respiration

  3. Glycolysis

  4. Krebs cycle


Correct Option: A
Explanation:

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to produce glucose and oxygen.

Which of the following is a function of the mitochondria?

  1. Producing ATP

  2. Storing genetic information

  3. Synthesizing proteins

  4. Transporting materials across the cell membrane


Correct Option: A
Explanation:

Mitochondria are known as the 'powerhouses of the cell' because their primary function is to generate ATP, the energy currency of the cell.

What is the name of the process by which cells divide to produce genetically identical daughter cells?

  1. Mitosis

  2. Meiosis

  3. Binary fission

  4. Budding


Correct Option: A
Explanation:

Mitosis is the process by which a cell divides into two genetically identical daughter cells.

Which of the following is a type of connective tissue?

  1. Bone

  2. Cartilage

  3. Muscle

  4. Nerve tissue


Correct Option: A
Explanation:

Bone is a type of connective tissue that provides structural support and protection to the body.

What is the function of the ribosomes in a cell?

  1. Producing proteins

  2. Storing genetic information

  3. Generating ATP

  4. Transporting materials across the cell membrane


Correct Option: A
Explanation:

Ribosomes are responsible for protein synthesis, using the genetic information encoded in messenger RNA (mRNA) to assemble amino acids into proteins.

Which of the following is a hormone produced by the pancreas?

  1. Insulin

  2. Glucagon

  3. Epinephrine

  4. Thyroxine


Correct Option: A
Explanation:

Insulin is a hormone produced by the pancreas that regulates blood sugar levels.

What is the name of the process by which plants lose water vapor through their leaves?

  1. Transpiration

  2. Photosynthesis

  3. Cellular respiration

  4. Glycolysis


Correct Option: A
Explanation:

Transpiration is the process by which plants lose water vapor through their leaves, helping to regulate their temperature and transport water and nutrients throughout the plant.

Which of the following is a type of asexual reproduction in plants?

  1. Binary fission

  2. Budding

  3. Fragmentation

  4. All of the above


Correct Option: C
Explanation:

Fragmentation is a type of asexual reproduction in plants, where a new plant grows from a fragment of the parent plant.

What is the name of the process by which cells break down glucose to produce energy?

  1. Cellular respiration

  2. Photosynthesis

  3. Glycolysis

  4. Krebs cycle


Correct Option: A
Explanation:

Cellular respiration is the process by which cells break down glucose to produce energy in the form of ATP.

Which of the following is a type of passive transport across a cell membrane?

  1. Diffusion

  2. Osmosis

  3. Active transport

  4. Endocytosis


Correct Option: A
Explanation:

Diffusion is a type of passive transport across a cell membrane, where molecules move from an area of high concentration to an area of low concentration.

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