Cell City
Body Works
Disease Detectives
Genetics
Wild World
100

These tiny structures are responsible for protein synthesis.

What are ribosomes?

100

This chamber of the heart pumps oxygenated blood around the body.

What is the left ventricle?

100

These molecules on the surface of pathogens can trigger an immune response.

What are antigens?

100

This is the basic repeating unit, or monomer, of DNA.

What is a nucleotide?

100

This term describes all the organisms of one species living in the same area.

What is a population?

200

This organelle modifies and packages proteins before they are transported around or out of the cell.

What is the Golgi apparatus?

200

These tiny air sacs provide a large surface area for gas exchange in the lungs.

What are alveoli?

200

These white blood cells engulf and digest pathogens.

What are phagocytes?

200

This term describes the way adenine pairs with thymine and cytosine pairs with guanine in DNA.

What is complementary base pairing?

200

Temperature, light intensity and soil pH are examples of this type of environmental factor.

What is an abiotic factor?

300

This is the movement of water through a partially permeable membrane from an area of higher water concentration to lower water concentration.

What is osmosis?

300

This blood vessel supplies the heart muscle itself with oxygenated blood.

What is the coronary artery?

300

These lymphocytes can develop into plasma cells that produce antibodies.

What are B lymphocytes?

300

This enzyme separates the two strands of DNA during DNA replication.

What is DNA helicase?

300

This describes the role of an organism within its ecosystem, including how it uses resources and interacts with other organisms.

What is a niche?

400

This transport process uses energy to move substances against their concentration gradient.

What is active transport?

400

This valve lies between the left atrium and left ventricle and prevents the backflow of blood.

What is the mitral valve?

400

This type of immunity develops when vaccination causes your own immune system to produce antibodies and memory cells.

What is artificial active immunity?

400

This type of RNA carries a copy of the genetic code from DNA to a ribosome.

What is messenger RNA (mRNA)?

400

This sampling technique uses square frames to estimate the abundance or distribution of organisms such as plants.

What is quadrat sampling?

500

These folds of the inner mitochondrial membrane increase the surface area available for aerobic respiration.

What are cristae?

500

This mechanism keeps internal conditions such as body temperature and blood glucose within narrow limits.

What is homeostasis? 

500

This faster and stronger immune reaction occurs when the body encounters the same antigen for a second time.

What is the secondary immune response?

500

This stage of protein synthesis occurs at a ribosome, where the sequence of mRNA codons determines the order of amino acids.

What is translation?

500

This term describes the total mass of living biological material present in organisms at a particular trophic level.

What is biomass?

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