Unit 1 Quizziz

What is the role of energy in the making and breaking of polymers?

• Energy is not involved in the process.

• Energy is only required for breaking polymers.

• Energy is required for both making and breaking polymers.

• Energy is only required for making polymers.

How do living systems transmit information in order to ensure their survival?

• Through chemical reactions only.

• Through electrical impulses.

• Through DNA, RNA, and signaling molecules.

• Through mechanical vibrations.

How would living without the polarity of the water molecule?

• It would have no effect on living organisms.

• It would disrupt cellular functions.

• It would enhance nutrient absorption.

• It would enhance nutrient absorption.

What are elements?

• Substances that can be broken down into smaller substances by chemical means

• Substances that cannot be broken down into smaller substances by chemical means

• Mixtures of different chemical compounds

• Substances that only exist in living organisms

Which of the following elements make up approximately 96% of the mass of all living things?

• Oxygen, Carbon, Hydrogen, Nitrogen

• Sodium, Potassium, Calcium, Magnesium

• Iron, Zinc, Copper, Selenium

• Helium, Neon, Argon, Krypton

What is the smallest unit of an element?

• Molecule

• Atom

• Compound

• Cell

Which subatomic particle is packed with protons in the nucleus and has no charge?

• Proton

• Neutron

• Electron

• Isotope

What is the role of neutrons in an atom?

• Provide a positive charge

• Provide a negative charge

• Provide stability to the nucleus

• Determine the element's chemical properties

Which type of bond involves the transfer of electrons from one atom to another?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Van der Waals interaction

What type of bond results from the sharing of electrons between atoms?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Van der Waals interaction