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Science Flashcards for test on 8/16/18
Terms in this set (19)
A rigid layer of cellulose that surrounds the cells of plants and some other organisms. It protects the plant cell.
A thin layer of material that controls which substances pass into and out of a cell.
The "brain" of the cell which directs all of the cells activities. The nucleus also contains DNA.
Tiny cell structures that carry out specific functions within the cell. Every organelle is part of a team.
Thin strands of material that fill the nucleus, contains information for directing a cells functions.
A small round structure in the nucleus. Where ribosomes are made.
Small grain-shaped organelles that produce proteins.
A liquid that fills the region between the cell membrane and the nucleus.
Converts energy stored in food to energy stored to live and function.
An organelle with a network of membranes that produce many substances.
Receives proteins and other newly formed materials from the Endoplasmic Reticulum, packages them, and distributes them to other parts of the cell.
Stores water, food, or other materials needed by the cell.
Captures energy from sunlight and changes it to a form of energy cells that are used to make food.
Breaks down the large food particles into smaller particles.
How do microscopes work?
Some microscopes focus light through lenses to produce a magnified image, and other microscopes use beams of electrons.
Materials pass in and out of the nucleus through pores in the nuclear envelope. It is kind of like a skin that covers the nucleus.
What is magnification?
The condition of things appearing larger than they are.
What is a convex lens?
A center that is thicker than its edge.
What are the pieces of a microscope?
Ocular Lens, Body Tube, Revolving Nosepiece, Objective Lenses, Slide clip, Stage, Lamp, Coarse Adjustment, Fine Adjustment, Diaphraghm.
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