Science Unit 3
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Cell- | A basic unit of structure and function in a living thing.
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| Organisms- | May be made by one cell or trillions of cells.
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| Nucleus- | The control center of a cell that directs the cell's activities.
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| Cell membrane- | The thin covering that surrounds every cell and that controls what leaves and enters the cell.
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| Inherited trait- | A characteristic passed from parents to their offspring.
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| Recessive trait- | A trait that appears only if an organism has two factors for that trait.
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| Dominant trait- | A trait that appears if an organism has one factor for that trait.
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| Tissue- | A group of similar cells that work together, such as muscle tissue and stomach tissue. Cells of the same type that work together to do a certain job make up a _________.
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| Organ- | A group of tissues that work together to preform a certain function.
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| Organ system- | A group of organs that work together to do a job for the body.
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| Brain- | The organ in the human body that processes information.
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| Skin- | The human bodies largest organ, covering the outside of the body.
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| Bones- | Organs that support and protect the body, store minerals, and allow movement.
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| Muscle- | An organ that contracts to produce body movement.
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| Lungs- | Spongy organs that expand to fill with air.
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| Heart- | A muscular organ that pumps blood throughout your body.
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| Stomach- | A bag-like organ in which food is mixed with digestive juices and squeezed by muscles.
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| Liver- | A large organ that makes a digestive juice called bile.
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| Pancreas- | An organ in the body that makes a digestive juice as well as insulin.
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| Kidneys- | Organs in the human excretory system that remove waste materials from the blood.
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| Bladder- | Organ in the excretory system that stores and releases urine.
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| Cell theory- | All living things are made of cells, all the processes of life take place in cells, and new cells come from existing cells.
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| Small intestine- | It digests food and absorbed nutrients from digested food.
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| Large intestine- | Absorbs water and minerals and leaves only the waste.
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| Mitosis- | It occurs within body cells and allows for growth.
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| Meiosis- | It forms sex cells-eggs and sperm.
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| Mitochondria- | It releases energy the cell uses to do its jobs. Also known as the "powerhouse" of the cell.
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| Cytoplasm- | A jellylike substance that gives the cell shape and holds the cell's parts.
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| Cell wall- | It surrounds and protects only the plant cell.
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| Vacuole- | In a plant cell and it stores water, nutrients, and wastes.
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| Chloroplast- | It uses energy from sunlight to make sugar.
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| Nervous system- | It sends messages throughout your body using nerves that are along your spinal cord.
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| Integumentary system- | It protects the body's organs and it makes you feel pain.
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| Muscular system- | The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains posture, and circulates blood throughout the body.
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| Skeletal system- | The framework of the body, consisting of bones and other connective tissues, which protects and supports the body tissues and internal organs.
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| Respiratory system- | Organs in the ________ bring in oxygen that the body needs to release carbon dioxide, the body's waste gas.
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| Excretory system- | It rids the body waste and keeps your body's water and salt levels in balance.
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| Pituitary- | This produces hormones that tell other glands what to do.
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| Thyroid- | It produces a hormone that lets your body use energy. It goes up when you need energy, and it goes down when you have enough energy.
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| Adrenals- | These glands produce a hormone called adrenalin.
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| Endocrine system- | It produces hormones that cause changes in growth.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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