Elements of Life

Which category do lipids, carbohydrates, proteins, and nucleic acids that form the basic structure of cells and other components of living things belong to?

• fertilizers

• metals

• toxic elements

• organic compounds

An atom has two particles in the nucleus - (a)   and ​ (b)   , also known as the ​ (c)   ​ (d)   . Surrounding the nucleus are​​ (e)   .

• neutrons
• protons
• atomic
• electrons
• number

Tags

NGSS.MS-PS1-1

The number of protons and neutrons is used to calculate the (a)   ​ (b)   . In an isotope, there are a different number of ​ (c)   .

• atomic
• mass
• neutrons

An ion can __________.

• gain electrons

• gain or lose electrons

• gain protons

• lose neutrons

________is anything that takes up space and has mass.

Define atom, element, compound and molecule

• molecule

• substances that cannot be broken down into simpler forms by ordinary chemical reactions

• element

• substances composed of different kinds of atoms

• compound

• smallest particles that exhibit characteristics of an element

• atom

• a pair or group of atoms that can exist as a single unit

Tags

NGSS.MS-PS1-1

Draw the subatomic particles of helium - 2 protons, 2 neutrons and 2 electrons

Tags

NGSS.MS-PS1-1

According to the ______ __ _____, matter is neither created nor destroyed but rather it is recycled.

• conservation of matter

• conservation of mass

• conversion of matter

• distribution of matter

Tags

NGSS.MS-PS1-5

Match the following terms

• lipids

• store energy for cells and they provide the core of cell membranes

• carbohydrates

• store energy and provide structure to cells

• proteins

• essential for storing and expressing genetic information

• nucleic acids

• provides structure to cells and are used for countless cell functions

Tags

NGSS.MS-LS1-2

Acid and bases ________________.

• release responsive hydrogen ions and hydroxide ion

• release reactive hydrogen ions and hydroxide ions

• accept hydrogen ions and hydroxide ions

• delete hydrogen ions and hydroxide ions