Scope the Scene
What is a microscope?
This instrument uses lenses to magnify objects too small to see with the naked eye.
What is the nucleus?
Called the “control center” of the cell, it contains the DNA.
What is the cell wall?
This rigid outer layer is found in plant cells but not in animal cells.
What is a cell?
This is the basic unit of structure and function in living things.
What is an ecosystem?
All the living and nonliving things interacting in one area, such as a coral reef.
What is the ocular lens (eyepiece)?
This part of a compound microscope is the lens you look through, usually 10x.
What is the mitochondrion?
Called the “powerhouse of the cell,” it releases energy from food.
What is the chloroplast?
Plant cells have this organelle for making food, but animal cells do not.
What is a tissue?
A group of similar cells working together to do one job, such as muscle or nerve.
What is a population?
All the organisms of the same species living in the same area.
Who is Robert Hooke?
In 1665, this scientist looked at thin slices of cork and named the tiny boxes he saw “cells.”
What is the cell membrane?
This thin, flexible layer controls what enters and leaves the cell.
What is rectangular (or box-like)?
Plant cells are usually this shape, while animal cells are usually round or irregular.
What is an organ?
Different tissues working together form this level, such as the heart or stomach.
What is the biosphere?
This is the highest level of biological organization, covering all places on Earth where life exists.
What is 400x?
A student uses a 10x eyepiece and a 40x objective lens. This is the total magnification.
What is the chloroplast?
This green organelle contains chlorophyll and is where photosynthesis happens.
What are unicellular organisms?
Amoebas and bacteria are made of only one cell, so they are called this.
Arrange from smallest to largest: organism, tissue, cell, organ system, organ.
cell → tissue → organ → organ system → organism
What are a population and a community?
A group of bangus in a fishpond is one of these levels, while all the fish, plants, and microorganisms in the pond together are the next level up.
What is “All cells come from pre-existing cells”?
The cell theory says all living things are made of cells and the cell is the basic unit of life. Give the third statement.
What is the vacuole?
This organelle stores water, nutrients, and wastes, and is very large in mature plant cells.
What are the cell wall and the mitochondria?
Name the structure that gives plant cells rigid support and the organelle both plant and animal cells use to release energy.
What is an organ system?
This is the level formed when several organs work together, such as the digestive system.
What is “Plants can’t reproduce, their population drops, and the community and ecosystem become unbalanced”?
If pollinators disappear from a rice field, explain how this lower-level change can affect higher levels.