Biology Final 2024-25

Two energy processing organelles are the chloroplasts and the mitochondria. Which of the following statements are true about these two organelles?

• All living things must have both to survive.

• All living things have chloroplasts, but only one celled organisms have mitochondria.

• All organisms have mitochondria, but only some have chloroplasts.

Sometimes Golgi are described as the post office of the cell. This is because the Golgi:

• hold molecules for organelles to pick up

• facilitate diffusion across the cell membrane

• sort, package, and ship proteins.

All cells are surrounded by membranes. The main role of the cell membrane is to

• regulate what moves in and out of the cell

• release any type of molecule out of the cell

• arrange the cells organelles in the cytoplasm

If a cell has no nucleus and free-floating DNA, it is a

• prokaryote

• eukaryote

• virus

Eukaryotes and prokaryotes are similar in that they both have

• mitochondria

• nuclei

• cell membranes

If you are looking at cells under a powerful microscope, what is the best way for you to tell the difference between prokaryotic cells and eukaryotic cells?

• Prokaryotic cells will always have cell walls, but eukaryotic cells will not.

• Prokaryotic cells will never have a cell membrane but eukaryotic cells will

• prokaryotic cells will not have organelles, but eukaryotic cells will

DNA is the genetic material that codes for a sequence of amino acids. Many amino acids combined together make up what type of macromolecule?

• Protein

• Carbohydrate

• Nucleic acid

Fats and oils are examples of _________.

• lipids

• proteins

• carbohydrates

• nucleic acids

Which of the following best describes a macromolecule?

• A molecule that is part of a larger molecule

• a molecule that is smaller molecules chained together

• a molecule that is made of organelles

Proteins that reduce the amount of energy needed to start a chemical reaction are called

• reactants

• ions

• enzymes