Biology Midterm Review

What is the purpose of an enzyme in a reaction?

• it changes the pH of the cell

• it breaks down the substance

• it speeds up the reaction

• it produces energy for the cell

pH or temperature changes can change the shape of the enzyme's ____, which is where it attaches to the substrate.

• active site

• nucleus

• bond

• substrate

Which of these is NOT a characteristic of all living things?

• responding to the environment

• growth & development

• use photosynthesis to produce energy

• reproduce

Which of these things is present in eukaryotic cells but NOT in prokaryotic cells?

• DNA or RNA

• cytoplasm

• nucleus

Which of these is the highest level of organization?

• organ system

• tissue

• organ

• organism

Molecules that can move freely across a membrane will move from areas of ______ concentration to _____ concentration

• high to low

• low to high

Tags

NGSS.MS-LS1-2

Osmosis is the movement of _________.

• salts

• glucose

• water

• cells

The movement of particles from one side of a membrane to another without using energy, it is called:

• passive transport

• active transport

• ATP

• gradient

Tags

NGSS.MS-LS1-2

The molecule that provides most of the energy for a cell to work is:

• ATP

• ADP

• DNA

• Water

Tags

NGSS.MS-LS1-7

Which of the following is the best comparison to a cell membrane?

• a window screen

• a brick wall

• a swimming pool

• a truck