20. In an ovulate cone of a pine, meiosis occurs in the

a antheridium.

b. nucellus.

C microspore mother cell.

d megaspore mother cell.

2. Which describes a substance with a high index of refraction? It causes light to speed up significantly. It causes light to slow down significantly. 90 It bends light less than air.

Which mineral can the breakdown of bone release to keep the body in homeostasis? cesium carbon calcium copper

True or False: All living organisms have cell membranes.

Which of the following is the pattern of growth a human population will follow over its lifetime? a. logistics growth b. exponential growth c. There has been no recorded pattern developed for the growth of human populations. D. population crash

1. Which of the following is always found where plates of the lithosphere meet? A. Convection current B. Sea-floor spreading C. Convergent boundary D. Tectonic plate boundary

What are the different names of for the different ways the moon can look from Earth

How much filtrate is eliminated as urine?

Which are examples of non-specific defenses?

Energy is released from ATP when

Genetic disorders of metabolism occur when individuals inherit a defect in one or more genes that result in the lack of a specific enzyme. Without appropriate enzyme activity, by products can accumulate in the body, sometimes with toxic effects.