Unit 3 Biology Review

The smallest living unit of any organism is the...

• cell

• tissue

• organ

• organ system

Tags

NGSS.MS-LS1-1

Vacuoles...

• help maintain shape

• make energy

• store water, salt, proteins, and carbohydrates

• sort and ship

Tags

NGSS.MS-LS1-2

How do cells communicate?

• Lysosomes

• Tik Tok

• Chemical signals

• Walkie Talkies

During diffusion substances move from an area of _______ concentration to and area of _______ concentration.

• lower, even lower

• red, purple

• lower, higher

• higher, lower

Which of the following is an example of homeostasis?

• A rock breaking apart

• Sweating to cool down

• Eating Cheetos

• Sleeping when you're tired

Tags

NGSS.HS-LS1-3

The tertiary structure of a protein is dependent on

• the sequence of amino acids

• interactions between the amino acid backbone

• the interactions of the R groups

• Binding of two or more polypeptides together

Cysteine is one of only a few amino acids that contains sulfur, which can form disulfide bonds between 2 cysteines. What level of protein structure would this most impact?

• Primary structure

• Secondary structure

• Tertiary structure

• Quaternary structure

What type of reaction is shown in the image?

• Dehydration reaction

• Hydrolysis reaction

• DNA replication

Hemoglobin is a protein that consists of four polypeptide subunits held together by hydrogen bonds and ionic bonds, which indicates that hemoglobin has ____________________ structure.

• Primary level only

• Secondary level only

• Tertiary level

• Quaternary level

Which of the following is correctly defined as the attraction of the hydrogen from one molecule to the oxygen of a different molecule?

• amphipathic

• hydrophobic

• hydrogen bonding

• adhesion