Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

Chemistry of Life: Elements and Molecules

18 Questions

1 Views

Chemistry of Life: Elements and Molecules

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What are the four major elements found in 96% of living organisms?

Mercury, Lead, Arsenic, Cadmium

Calcium, Iron, Magnesium, Phosphorus

Carbon, Hydrogen, Oxygen, Nitrogen (correct)

Sodium, Potassium, Chlorine, Sulfur

Which of the following is not one of the molecules of life mentioned in the text?

Carbohydrates

Nucleic Acids

Metals (correct)

Proteins

Why do living organisms eat according to the text?

To avoid dehydration

To eliminate waste products

To gain more energy for growth and repair (correct)

To reduce body temperature

What is the most abundant inorganic compound in the human body according to the text?

H2O Signup and view all the answers

What is essential for building blocks and energy for building and running bodies according to the text?

Proteins Signup and view all the answers

Which element is NOT mentioned as one of the major elements found in living organisms?

Calcium Signup and view all the answers

What is the function of a catalyst in a chemical reaction?

Lowering the activation energy required for the reaction to occur Signup and view all the answers

Which two components fit together like a lock and key during an enzyme-catalyzed reaction?

Substrates and enzymes Signup and view all the answers

What is the main role of enzymes in biological systems?

Speed up reactions by lowering activation energy Signup and view all the answers

Which part of the enzyme-substrate complex is eventually released as a product?

Glucose-6-phosphate Signup and view all the answers

What is the significance of activation energy in a chemical reaction?

It is needed to start a reaction Signup and view all the answers

Why are enzymes important in living tissues for speeding up reactions?

To make slow reactions practical Signup and view all the answers

What is the process of building bigger molecules from smaller molecules called?

Synthesis Signup and view all the answers

What are proteins primarily built from?

Amino acids Signup and view all the answers

Which large organic molecule is built from sugars?

Carbohydrates Signup and view all the answers

What is the main function of digestion in the body?

Breaking down big molecules into raw materials Signup and view all the answers

Which large molecule is primarily built from nucleotides?

Nucleic acids (DNA) Signup and view all the answers

In the context of building important polymers, what is the role of ATP?

Providing energy for synthesis reactions Signup and view all the answers