Most cells are constantly replacing damaged molecules and organelles. Explain why a red blood cell is unable to replace damaged proteins.

What does the smooth ER do in the plant cell

Which best describes evolution? A. It is a theory backed up by scientific evidence. B. It is guess about how organisms change. C. It is a hypothesis that is not supported by scientific evidence. D. It is a hunch that animals change over time

Which of the following is not an adaptation of California thrashers to life in the chaparral biome?

Chloroplast contain a green substance called

The use of DDT as a pesticide is an example of how new technology can have favorable and dangerous long-term outcomes. How does this relate to the use of DNA technology? Only positive outcomes can result from new technology in science.

If an object with a mass of 100 kg on earth is taken to a planet that has more gravity, how will this affect the object's mass and weight?

Lamarck's mechanism of change can be called

What is carrying capacity and what does it mean for ecosystems?

Why was the evolution of a coelom a critically important innovation for animals? a) The coelom can act as a hydrostatic skeleton. b) The coelom gives rise to a complex nervous system. c) The coelom made it possible for animals to colonize land.

Marine mammals, with a few exceptions, are a. oviparous b. ovoviviparous c. viviparous