What best describes the cell membrane? A. It is a single layer of lipids
B. It is an impenetrable barrier
C. It is strong, rigid, and durable
D. It is a lipid bi-layer

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.

What is turgor pressure, what causes it, and what does it do for a plant?

What are the student's observations and inferences before he starts his investigation?