What structure in fish allows for oxygen to be filtered out of water.

The organic compounds in living things are organized into groups: carbohydrates, lipids, proteins, and nucleic acids.

What is the major function of the lymphatic system? a. break down food into absorbable units b. eliminate nitrogen-containing metabolic wastes from the body c. produce offspring d. return leaked fluids back to the cardiovascular system

Which factor is responsible for the red color of Mars? sulphur dioxide methane iron oxide nitrogen

Which statements describe how the body maintains homeostasis on a hot day? Check all that apply. The nervous system and the muscular system work together. The muscular system and skeletal system work together.

Which of the four phases of cellular respiration result in the production of atp?

In order to build the dipeptide, water was removed and smaller molecules were joined o make a larger molecule. What is the name of this chemical process?

Iodine solution is added to a cake solution. The color changes to purple. Based on this result, what biological molecules are present in the cake solution?

Glucocorticoids are steroid hormones that usually enhance the immune responses when an individual is suffering from severe stress. True or False

Which of the following is a living material that might be found in soil a air b algae c mineral or d silt

Why did Mindel prevent his plants from self pollinating