Cells of the immune system are able to respond to the presence of invading organisms because they recognize the? A. Antigens on invaders

B. antibodies on pathogens

C. DNA pattern in the nuclei of viruses

D. antibodies released from microbes

How does urine osmolarity compare between the two treatment groups?

What are the three products of cellular respiration

Using evidence from the text describe, the purpose of Golgi complex

Fructose‑2,6‑bisphosphate is a regulator of both glycolysis and gluconeogenesis for the phosphofructokinase reaction of glycolysis and the fructose‑1,6‑bisphosphatase reaction of gluconeogenesis.

Molten material cools and forms igneous rocks. Lava flows from a volcano.

Which choice is a biotic factor of an ecosystem soil air ants sun

Which of the following are necessary for a seed to germinate? 1. moisture content of seed must be at least 9% 2. Moisture content of the seed must be less than 9% 3. certain enzymes in the seed are activated 4. temperature must be above 80 degrees 5.

Give 2 possible circumstances or actions that may lead to a decrease in the TFR of a population

What's system includes oceans, lakes rivers and groundwater's

What extinction event wiped out the dinosaurs