Biology 30 Structures & Functions Exam Multiple Choices Only

The Study of Life is called?

Biology

The Study of Cells is called?

Cytology

What type of membrane allows some, but not all, materials to cross?

Selectively Permeable

What characteristics are shared by most cells?

Most cells are microscopic, enclosed by a membrane and contain cytoplasm

What materials makes up a cell membrane?

Phospholipids, cholesterol and proteins

Specialized structures that work together inside a cell are called?

Organelles

What tool did the scientists use to gather observation about the cell?

Microscope

The fluid like material of the cytoplasm is made up of material called?

Cytosal

Tiny holes, in plant cells that allow material to pass in and out of the cell are called?

Plasmodesta

The difference in the concentration of dissolved particles from one location to another is called a?

Concentration Gradient

Which process uses proteins to move molecules against a concentration gradient?

Active transport

What is phospholipid composed of?

A polar head and a non polar tail

The fluid mosaic model refers to the?

Cell membrane molecules are in constant motion

Which word best describes the structure of the cell membrane?

Semipermeable

In order for a cell to live in its environment, a cell must maintain?

Homeostasis

A network of thin folded membrane that aid in the production of proteins?

Rough ER

Links amino acids together to form proteins?

Ribosomes

A network of thin folded membranes that aid in the production of lipids?

Smooth ER

Area of the cell that stores and protects the DNA or the cell?

Nucleus

Supplies energy to the cell by using organic molecules to make ATP?

Mitochondria

Small membrane-bound sacs that transport materials from place to place in the cell?

Vesicle

Makes ribosomes and RNA?

Nucleolus

A closely layered stacks of membrane-enclosed spaces that process, sort and deliver proteins?

Golgi Apparatus