Biology Chapter 7 Cell Structure & Function

The theory that cells form the fundamental structural and functional units of all living organisms.

It contains DNA and RNA and is responsible for growth and reproduction.

<p>An organism with cells characteristic of all life forms except primitive microorganisms.</p> Signup and view all the answers

<p>A unicellular organism that lacks a nucleus and membrane-bound organelles.</p> Signup and view all the answers

<p>A tiny cell structure that carries out a specific function within the cell.</p> Signup and view all the answers

<p>A jellylike fluid inside the cell in which the organelles are suspended.</p> Signup and view all the answers

<p>Layer of two membranes that surrounds the nucleus of a cell.</p> Signup and view all the answers

<p>Granular material visible within the nucleus; consists of DNA tightly coiled around proteins.</p> Signup and view all the answers

<p>In a eukaryotic cell, one of the structures in the nucleus that are made up of DNA and protein.</p> Signup and view all the answers

<p>The organelle where ribosomes are made, synthesized, and partially assembled.</p> Signup and view all the answers

<p>Small particle in the cell on which proteins are assembled.</p> Signup and view all the answers

<p>An internal membrane system in which components of cell membrane and some proteins are constructed.</p> Signup and view all the answers

<p>Modifies, sorts, and packages proteins from the endoplasmic reticulum.</p> Signup and view all the answers

<p>An organelle filled with enzymes that break down cells.</p> Signup and view all the answers

<p>Cell organelle that stores materials such as water, salts, proteins, and carbohydrates.</p> Signup and view all the answers

<p>The powerhouse of the cell, site of ATP production.</p> Signup and view all the answers

<p>Organelle that uses chlorophyll to capture energy from sunlight.</p> Signup and view all the answers

<p>Network of protein filaments that helps the cell maintain its shape.</p> Signup and view all the answers

<p>In animal cells, a cytoplasmic organelle that organizes the mitotic spindle fibers during cell reproduction.</p> Signup and view all the answers

<p>Thin, flexible barrier around a cell that regulates entry and exit.</p> Signup and view all the answers

<p>Strong layer around the cell membrane in plants, algae, and some bacteria.</p> Signup and view all the answers

<p>Double-layered sheet that forms the core of nearly all cell membranes.</p> Signup and view all the answers

<p>Process by which molecules tend to move from an area of higher concentration to lower concentration.</p> Signup and view all the answers

<p>When the concentration of a solute is the same throughout a solution.</p> Signup and view all the answers

<p>Diffusion of water through a selectively permeable membrane.</p> Signup and view all the answers

<p>Having the same or equal osmotic pressure.</p> Signup and view all the answers

<p>Describes a solution whose solute concentration is higher than inside a cell.</p> Signup and view all the answers

<p>Describes a solution whose solute concentration is lower than inside a cell.</p> Signup and view all the answers

<p>Movement of specific molecules across cell membranes through protein channels.</p> Signup and view all the answers

<p>Energy-requiring process that moves material across a cell membrane against a concentration difference.</p> Signup and view all the answers

<p>A cell membrane surrounds a particle and encloses it in a vesicle to bring it into the cell.</p> Signup and view all the answers

<p>The process by which a cell engulfs large particles or whole cells.</p> Signup and view all the answers

<p>Process by which certain cells can engulf and incorporate droplets of fluid.</p> Signup and view all the answers

<p>A substance is released from the cell through a vesicle that fuses with the membrane.</p> Signup and view all the answers

<p>The process in which cells develop in different ways to perform different tasks.</p> Signup and view all the answers

<p>A group of similar cells that perform a particular function.</p> Signup and view all the answers

<p>A fully differentiated structural and functional unit made of tissues.</p> Signup and view all the answers

<p>A group of organs that work together to perform a specific function.</p> Signup and view all the answers

<p>Hollow rods composed of proteins that make up part of the cytoskeleton.</p> Signup and view all the answers