Practice Synthesis of Vitamin D - 13.3.5 | 13. Skin: The Jack-of-all-Trades | ICSE Class 9 Biology
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Games

Interactive Games

Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What compound is converted into Vitamin D3 in the skin?

💡 Hint: Think about what your skin contains that interacts with sunlight.

Question 2

Easy

Why is Vitamin D important?

💡 Hint: Think about what keeps our bones strong.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the primary function of Vitamin D in the body?

  • A) Protein synthesis
  • B) Calcium absorption
  • C) Oxygen transport

💡 Hint: Think about what nutrients Vitamin D helps the body utilize.

Question 2

True or False: Vitamin D is synthesized in the skin during the night.

  • True
  • False

💡 Hint: Consider when the sun is out.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Consider a person living in a region with limited sunlight exposure. What strategies would you recommend to ensure they maintain adequate Vitamin D levels?

💡 Hint: Think about natural sources and dietary options.

Question 2

Analyze the relationship between Vitamin D levels and the incidence of bone diseases in populations living at different latitudes.

💡 Hint: Consider how sunlight varies by geographical locations.

Challenge and get performance evaluation