Vocab 1
Another name for the ______ is the cell's director. It controls the cell's activities.
Nucleus
Another name for a living things is a ___.
Organism
This system filters the blood and rides the body of wastes as urine.
Urinary System
This is the main organ of the circulatory system and its job is to pump blood throughout the body.
Heart
There are many traits that we get from our parents, such as eye color, hair color, and freckles. These are examples of ________.
Inherited Traits
This is the basic unit of structure and function in a living thing. This is the smallest unit of life.
Cell
This system consists of bones, ligaments, and cartilage. Which support and protect your body, store minerals, and allow movement.
Skeletal System
This is the part of your eye that light enters through. It can change size depending on how much light there is.
Pupil
_____ traits are known as "weak traits." An organism needs two of these factors for the trait to appear.
Recessive
_______ traits are considered "strong traits." An organism only needs one factor for a factor to appear.
Dominant
This system brings in oxygen for your body to use, and releases carbon dioxide.
Respiratory System
This is the muscular bag that mashes food and mixes the food with digestive juices.
Stomach
Cells of the same type that work together for a certain job make up a _____.
Tissue
Several tissues that work together to do a certain job make up a ________.
Organ
This system is a complex collection of nerves that transmit signals between the brain and different parts of the body.
Nervous System
Bones
All cells have a ________ that surrounds the cell and controls what enters and leaves the cell.
Cell Membrane
The cell's ________ is jelly-like and it holds the cell parts together.
Cytoplasm
This system carries blood through your body. It consists of the heart, blood vessels, and blood.
Circulatory System
Your body has two of these organs, whose job is to remove waste from the blood. It makes sure your blood does not have too much or too little salt.
Kidneys
Answer the following question using complete sentences.
What is the main difference between arteries and veins in the circulatory system?
Arteries are thick vessels that move blood away from the heart to your body. Veins move blood carrying waste back to the heart.