Why are there no fossils in sedimentary rocks?

Which molecules most commonly used as building blocks for the synthesis of a new cell membrane

Which of the following statements is true of all genetically engineered organisms? A. They have a genome that is identical to their parents' genome. B. They are made using half the genomes of two different species. C.

Diffusion is the tendency of molecules to move A) from a lower to a higher concentration B) down their concentration gradient C) into a cell by endocytosis D) out of a cell by exocytosis

What happens when organic molecules decompose? Energy is absorbed from the environment. Energy is released. The products quickly form new ionic bonds.

A Scientist investigates two types of cells located in different parts in the human body. Cell A contains many more mitochondria than Cell B. What is the best conclusion to make from this observation?

Which moon phases are direct opposites of each other in both appearance and position?

During Mendel's first set of experiments, he allowed true-breeding tall plants to cross with true-breeding short plants. What happened when he allowed the F, offspring from this first set of experiments to self-pollinate?

What process produced the sperm in the male flies and egg in the female flies

Explain why we would expect to find glucose in the urine of a diabetic person

What affect does extreme temperature and extreme pH have on enzyme activity?