Biology Midterm Exam

Front

Which phrase best describes selective permeability?

Back

Some molecules pass

Front

What type of molecule provides building blocks for tissues, transports other molecules, and helps regulate certain reactions in the body?

Back

Protein

Front

Reusable complex proteins that speed up chemical reactions within cells are called

Back

Enzymes

Front

Which macromolecules give plant cell walls their sturdy structures?

Back

Carbohydrates

Front

All organic molecules have this element in common. It can form multiple bonds and bonds with other elements as well as other atoms like itself.

Back

Carbon

Front

A food that is high in calories is most likely high in: Proteins, Nucleic acids, Carbohydrates, Lipids

Back

Lipids

Front

The jelly-like substance found inside a cell membrane is

Back

Cytoplasm

Front

Building blocks of lipids? Options: Tungsten iron aluminum, Carbon hydrogen oxygen, Magnesium sodium barium, Calcium nitrogen sulfur.

Back

Carbon hydrogen oxygen

Front

The portion of the membrane system in eukaryotic cells that is responsible for the making of lipids and breaking down toxic substances is the

Back

Smooth ER

Front

What is the original source of energy in most ecosystems?

Back

The sun