Biology

Based on the graph, what temperature does this enzyme work best? 

• 15 C

• 40 C

• 30 C

• 47 C

Why are the lungs, the major organ of the respiratory system, also considered an excretory organ?

• They get rid of carbon dioxide, a cellular waste

• They get rid of oxygen, a cellular waste

• They get rid of urea, a cellular waste

• They get rid of salt, a cellular waste

What body system helps break down food?

• Respiratory System

• Digestive System

• Nervous System

• Circulatory System

The digestive system is made up of which of the following organs?

• Brain, nerves and spinal cord

• Lungs, trachea and mouth

• Esophagus, stomach, small intestine and large intestine

• Mouth, brain, cells and large intestine

What is the job of the white blood cells?

• to fight infection

• to carry oxygen

• to clot blood

• to remove carbon dioxide

Tags

NGSS.MS-LS1-3

Phloem and Xylem together make up the...

• Ground Tissue

• Vascular Tissue

• Dermal Tissue

• Cardiac Tissue

Which statement is true

• Xylem carries water while phloem carries food.

• Xylem carries food while phloem carries water.

What substance is made through photosynthesis and is food for the plant?

• chlorophyll

• chloroplast

• glucose

• dextrose

Tags

NGSS.MS-LS1-6

The tiny opening on the plant that lets air in and holds water in is called the ___________________.

• guard cell

• stomata

• petal

• cuticle

Tags

NGSS.MS-LS1-6

The vascular tissues of the plant are the ____________ which brings water up to from the roots of the plant and the _______________ which brings nutrients from the leaves to other parts of the plant

• xylem, phloem

• phloem, xylem

• stomata, guard cell

• guard cell, stomata