Why is carbon so special compared to other elements?

• only carbon atoms can be dissolved in water solutions + suspension

• carbon atoms have 4 valence electrons and can form quadruple bonds

• carbon atoms can bond to one another and form a lot of different structures

Tags

NGSS.HS-LS1-6

Which of the following is NOT a monomer?

• glucose

• protein

• amino acid

Which of the following is NOT a function of proteins?

• control the rate of reactions

• move substances into or out of cells

• store and transmit genetic information

In chemical reactions, atoms are

• rearranged

• created

• destroyed

Tags

NGSS.HS-PS1-7

Identify the reactant(s) in the chemical reactions, CO₂ + H₂O - - > H₂CO₃

• CO₂

• CO₂, H₂O, H₂CO₃

• CO₂ and H₂O

The energy needed to get a reaction started is the

• activation energy

• chemical energy

• cohesion energy

In which graph, Exothermic or Endothermic, is energy absorbed?

• Exothermic

• Endothermic

Tags

NGSS.HS-PS1-4

Enzymes affect the reactions in living cells by changing the

• speed of the reaction

• products of the reaction

• pH of the reaction

Which of the following is NOT a principle of the cell theory?

• cells are the basic unit of life

• very few cells are able to reproduce

• all living things are made of cells

Tags

NGSS.MS-LS1-1

Looking at a cell under a microscope, you note that it is a prokaryote. How do you know?

• the cell lacks a nucleus

• the cell lacks genetic material

• the cell lacks cytoplasm