What organelle makes a plant cell rigid when full, allowing it to stand up straight?

What would happen if to a substrate molecule if it came into contact with an enzyme active site that matched its specific shap?

2. Adenine and guanine are double-ringed purines single-ringed purines double-ringed pyrimidines D. single-ringed pyrimidines amino acids.

1) Explain why increasing the amounts of the two enzymes changed the life spans of the mice. 2) Express your opinion about whether people should be engineered to have high levels of the two enzymes.

What do you mean by migratory bird

What is the purpose of connective tissue?

Describe the process through which allopatric speciation splits 1 species into 2 distinct ones

What is an example of a limiting factor that humans use to control the carrying capacity of an environment for a particular type of organism? Explain your answer.

How does natural selection support the theory of evolution? A. Natural selection explains how the changes in life forms that evolve over millions of years take place over shorter periods of time. B.

Example of wave amplitude

Which biome is likely to be the home of zebras and lions?