Question | Answer |
Cell- | A basic unit of structure and function in a living thing. |
Organisms- | May be made by one cell or trillions of cells. |
Nucleus- | The control center of a cell that directs the cell's activities. |
Cell membrane- | The thin covering that surrounds every cell and that controls what leaves and enters the cell. |
Inherited trait- | A characteristic passed from parents to their offspring. |
Recessive trait- | A trait that appears only if an organism has two factors for that trait. |
Dominant trait- | A trait that appears if an organism has one factor for that trait. |
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 _________. |
Organ- | A group of tissues that work together to preform a certain function. |
Organ system- | A group of organs that work together to do a job for the body. |
Brain- | The organ in the human body that processes information. |
Skin- | The human bodies largest organ, covering the outside of the body. |
Bones- | Organs that support and protect the body, store minerals, and allow movement. |
Muscle- | An organ that contracts to produce body movement. |
Lungs- | Spongy organs that expand to fill with air. |
Heart- | A muscular organ that pumps blood throughout your body. |
Stomach- | A bag-like organ in which food is mixed with digestive juices and squeezed by muscles. |
Liver- | A large organ that makes a digestive juice called bile. |
Pancreas- | An organ in the body that makes a digestive juice as well as insulin. |
Kidneys- | Organs in the human excretory system that remove waste materials from the blood. |
Bladder- | Organ in the excretory system that stores and releases urine. |
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. |
Small intestine- | It digests food and absorbed nutrients from digested food. |
Large intestine- | Absorbs water and minerals and leaves only the waste. |
Mitosis- | It occurs within body cells and allows for growth. |
Meiosis- | It forms sex cells-eggs and sperm. |
Mitochondria- | It releases energy the cell uses to do its jobs. Also known as the "powerhouse" of the cell. |
Cytoplasm- | A jellylike substance that gives the cell shape and holds the cell's parts. |
Cell wall- | It surrounds and protects only the plant cell. |
Vacuole- | In a plant cell and it stores water, nutrients, and wastes. |
Chloroplast- | It uses energy from sunlight to make sugar. |
Nervous system- | It sends messages throughout your body using nerves that are along your spinal cord. |
Integumentary system- | It protects the body's organs and it makes you feel pain. |
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. |
Skeletal system- | The framework of the body, consisting of bones and other connective tissues, which protects and supports the body tissues and internal organs. |
Respiratory system- | Organs in the ________ bring in oxygen that the body needs to release carbon dioxide, the body's waste gas. |
Excretory system- | It rids the body waste and keeps your body's water and salt levels in balance. |
Pituitary- | This produces hormones that tell other glands what to do. |
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. |
Adrenals- | These glands produce a hormone called adrenalin. |
Endocrine system- | It produces hormones that cause changes in growth. |