Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
HELUS7CH1
Life Science: Ch1: Cells
| Question | Answer |
|---|---|
| Cells are too small to be seen without a ___ device. | magnifying |
| The invention of the ___ in the 1600s changed people’s ideas about cells. | microscope |
| ___ can enlarge images up to 1,500 times. | Light microscopes |
| ___ microscopes can enlarge images 100,000 times or more. | Electron |
| The ___ describes how cells relate to living things. | cell theory |
| All ___ are made of one or more cells. | organisms |
| The ___ is the smallest unit of life. | cell |
| All new cells come from ___ cells. | pre-existing |
| Scientists agree that all living things have common ___. | characteristics |
| All cells are ___ with certain structures performing specialized functions. | organized |
| Cells ___ to changes in the environment. | respond |
| ___ in many-celled organisms usually occurs as cell number increases. | Growth |
| Organisms ___ and create offspring similar to themselves. | reproduce |
| Organisms maintain their internal environment through ___. | homeostasis |
| Cells use ___ to transport substances, make new cells, and perform chemical reactions. | energy |
| Atoms and ___ are the building blocks of cells. | molecules |
| ___ has unique properties to help cells with homeostasis and substance transport. | Water |
| Cells also contain such basic substances as ___, nucleic acids, lipids, and carbohydrates. | proteins |
| Proteins are composed of folded chains of molecules called ___. | amino acids |
| ___ include DNA, which contains the cell’s genetic information, and RNA, which is used to make proteins. | Nucleic acids |
| ___ include fats, which store large amounts of chemical energy. | Lipids |
| ___, composed of sugar molecules, store energy for quick release. | Carbohydrates |
| Cells have different shapes and sizes depending on their ___. | function |
| Every cell has a flexible covering called a ___, which is selectively permeable. | cell membrane |
| Plant, fungi, and some bacteria cells have a rigid ___ outside the cell membrane. | cell wall |
| Appendages, such as tail-like ___ or short hairlike ___, help cells move. | flagella, cilia |
| Inside a cell is the ___, a thick fluid in which cell structures are suspended. | cytoplasm |
| Cells have a network of fibers in the cytoplasm called the ___. | cytoskeleton |
| The cytoskeleton aids in ___ contraction, cell division, movement, and shape. | muscle |
| Structures in the cell that have specific functions are called ___. | organelles |
| The ___ is the control center of the cell. | nucleus |
| The nucleus contains the cell’s ___ material in long chains of DNA. | genetic |
| DNA chains are coiled into structures called ___. | chromosomes |
| Inside the nucleus is the ___. It helps make structures that make proteins. | nucleolus |
| The manufacture of ___ is an important function in cells. | proteins |
| Proteins are built within ___, which can attach to the endoplasmic reticulum. | ribosomes |
| Endoplasmic reticulum (ER) with ribosomes is called ___ and is important for making proteins. | rough endoplasmic reticulum |
| Endoplasmic reticulum without ribosomes is called smooth ER and is important for making ___. | lipids |
| Two kinds of ___ process the energy used by cells. | organelles |
| Most of the cell’s energy is produced in the ___. | mitochondria |
| Organisms that produce their own food manufacture it within ___. | chloroplasts |
| The ___ processes, transports, and stores molecules. | Golgi apparatus |
| ___, which carry substances to the cell membrane for release, form from the Golgiapparatus | Vesicles |
| Small ___ store food molecules, water, or waste products. | vacuoles |
| An animal cell has a vacuole called the ___, which stores digestive enzymes. | lysosome |
| A plant cell has a ___, which stores water and other molecules. | central vacuole |
| Cells are classified as prokaryotic cells or ___ cells. | eukaryotic |
| Cells without a nucleus or organelles are ___. | prokaryotic |
| ___ organisms, made up of one prokaryotic cell, were the only living things on bEarth for billions of years. | Prokaryotic |
| A prokaryotic cell has a loop of ___ instead of chromosomes. | DNA |
| Prokaryotes, also known as ___, can be harmful or beneficial to humans. | bacteria |
| ___ are essential for decomposition and can survive in extreme environments. | Bacteria |
| Cells with a nucleus and other organelles are classified as ___. | eukaryotic |
| Plants, animals, fungi, and protists all are made up of one or more ___ cells. | eukaryotic |
| Many scientists suggest that eukaryotes evolved as a result of one ___ cell becoming part of another prokaryotic cell. | prokaryotic |
| ___ transforms stored energy in food molecules into usable energy in molecules called adenosine triphosphate (ATP). | Cellular respiration |
| The first step in cellular respiration happens in the cytoplasm, where ___ breaks down a glucose molecule into two smaller molecules, releasing electrons | glycolysis |
| The second and third steps of cellular respiration happen in the ___. | mitochondria |
| In the second step of cellular respiration, the smaller molecules break down into ___, releasing more electrons. | carbon dioxide |
| In the third step of cellular respiration, ___ is produced using the released electrons and water. | ATP |
| Our muscle cells can release energy through ___ fermentation. | lactic acid |
| Lactic acid fermentation takes place entirely in the ___. | cytoplasm |
| Lactic acid fermentation uses glucose and produces ___ and carbon dioxide | lactic acid |
| ___ fermentation is used in the production of cheese and yogurt. | Lactic acid |
| One-celled fungi called yeast use ___ to produce energy. | alcohol fermentation |
| Alcohol fermentation uses glucose and produces ___ and carbon dioxide. | ethanol |
| Alcohol fermentation produces fewer ___ molecules than cellular respiration. | ATP |
| ___ fermentation is used in baking bread. | Alcohol |
| Some organisms use ___ to make food using a light source. | photosynthesis |
| Light energy is absorbed by ___ and other pigments in the chloroplasts. | chlorophyll |
| In photosynthesis, ___, water, and carbon dioxide are used to make sugar. | light energy |
| ___ is released into the atmosphere during photosynthesis. | Oxygen |
| Most organisms use the sugars from ___, and photosynthesis supplies the oxygen we breathe. | photosynthesis |
Created by:
jnosik
Popular Science sets