BIOLOGY

• Cells can be classified into different types based on their structure and function.
• Plant cells have a cell wall that provides support and protection to the cell.
• Tissues are lots of cells working together to carry out a particular function.
• Organs are groups of tissues working together to perform specific functions.
• Organ systems are made up of organs, which work together to achieve an overall goal or purpose.
• Cells are the basic building blocks of all living things. They are the smallest unit of life that can carry out all the functions of life.
• What are the 4 main parts of the heart?

  right ventricle, left ventricle, left atrium, right atrium
• Which two blood vessels carry deoxygenated blood?

  Pulmonary artery, veins.
• What substances are transported in the blood plasma? Nutrients, waste products(carbon dioxide), hormones, proteins.
• Whats the reason arteries have thick walls?

  To withstand high pressure blood.
• What condition is a pacemaker used to treat?

  Irregular heartbeat
• Whats the difference between veins and arteries?

  1. Veins: Carry blood to the heart, thin walls for low pressure blood 2.Arteries: Carry blood away from the heart, thick walls for high pressure blood.