You Had a Cold Last Month and You Caught Another

question 34

Multiple Choice

You had a cold last month and you caught another one this month from your brother. What is the most likely reason for this happening?

• A) Memory cells were not formed as a response to the first cold.
• B) The antibodies formed as a response to the first cold were degraded.
• C) The two cold viruses are different.
• D) Your macrophages are unable to perform phagocytosis.
• E) Your antigen-presenting cells do not recognize the second cold virus.

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Definitions:

Chloroplasts

Organelles found in plant cells and eukaryotic algae that conduct photosynthesis, capturing energy from sunlight and converting it and carbon dioxide into oxygen and energy-rich organic compounds.

Chromoplasts

Plant cell organelles that contain pigments and are responsible for the colors of fruits and flowers.

Pigments

Substances that give color to materials by absorbing certain wavelengths of light and reflecting others, widely used in paints, inks, and biological functions.