Plant Cell Structure and Components

<p>They contain more lignin than the primary cell wall (A)</p> Signup and view all the answers

<p>Patterns of cell division and enlargement (D)</p> Signup and view all the answers

<p>That cells are small, self-contained units that carry out all the functions of life. (A), That all living things are made up of cells. (B), That cells are the basic unit of life. (D)</p> Signup and view all the answers

<p>Prokaryotic cells lack a nucleus. (B)</p> Signup and view all the answers

<p>The smallest unit of a living organism. (A)</p> Signup and view all the answers

<p>All of the above. (D)</p> Signup and view all the answers

<p>To discuss the historical development of cell theory. (C)</p> Signup and view all the answers

<p>Lipids (C)</p> Signup and view all the answers

<p>Controlling the movement of substances in and out of the cell (D)</p> Signup and view all the answers

<p>Synthesizing carbohydrates (C)</p> Signup and view all the answers

<p>They are involved in transport and communication (C)</p> Signup and view all the answers

<p>They are selectively permeable, allowing some substances to pass through while blocking others (D)</p> Signup and view all the answers

<p>They are soluble in water. (A)</p> Signup and view all the answers

<p>Their amphiphilic nature, containing both hydrophilic and hydrophobic regions. (C)</p> Signup and view all the answers

<p>To provide flexibility and fluidity to the membrane. (A)</p> Signup and view all the answers

<p>Phospholipids have both hydrophobic and hydrophilic regions. (A)</p> Signup and view all the answers

<p>Phospholipids have a phosphate group in their structure, while sterols have a ring structure. (D)</p> Signup and view all the answers

<p>Facilitators (C)</p> Signup and view all the answers

<p>They are capable of being formed in specific areas of the cell. (D)</p> Signup and view all the answers

<p>A combination of lipids and proteins (D)</p> Signup and view all the answers

<p>To help solutes move across membranes more easily. (D)</p> Signup and view all the answers

<p>They are dynamic structures that can adapt to the cell's needs. (D)</p> Signup and view all the answers

<p>Site of all metabolic reactions (D)</p> Signup and view all the answers

<p>They act as channels for the passage of substances (C)</p> Signup and view all the answers

<p>It is a rigid and inflexible structure (D)</p> Signup and view all the answers

<p>They provide energy for cellular processes (C)</p> Signup and view all the answers

<p>Intrinsic proteins facilitate transport by providing channels or binding sites for specific substances (D)</p> Signup and view all the answers

An instrument used to see small objects including cells.

Basic building blocks of all living organisms identified by early biologists.

Simple cells without a nucleus, like bacteria.

A fundamental concept in biology stating that all living things are made up of cells.

Scientists who study living organisms and their cells.

A thin layer of pectin that holds plant cells together.

A polysaccharide that makes up the middle lamella.

A thicker, stronger wall formed after cell enlargement.

The process by which a cell increases in size.

The process of a cell splitting to form new cells.

Process where molecules create cellular membranes, essential for cell function.

Molecules that assist in the diffusion of solutes across membranes.

The process by which solutes move from higher to lower concentration areas.

Substances dissolved in a solution, such as salts in water, moving through membranes.

Fatty molecules forming the basic structure of cell membranes.

Lipids are primarily of two types: phospholipids and sterols (cholesterol).

A type of lipid that forms cell membranes with a hydrophilic head and hydrophobic tails.

A type of lipid that includes cholesterol, important for membrane structure and fluidity.

Describes molecules containing both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts.

Cell membranes are composed mostly of phospholipids and sterols, creating a protective barrier.

A basic structural unit of plants that contains a cell wall, chloroplasts, and a large vacuole.

A protective layer surrounding the cell, composed mainly of lipids and proteins.

The cell membrane is primarily made of fatty acids (lipids) and proteins.

Membranes perform various essential tasks, such as protection, transport, and communication.

Fatty substances that make up a major component of cell membranes.

The process of moving essential materials within cells.

The liquid matrix of the cytoplasm where metabolic reactions occur.

Proteins that are embedded within the cell membrane.

Chemical processes that occur within cells to maintain life.

Specialized structures within a cell that perform distinct functions.