I need some notes about cell membrane

Cell membrane

Explanation:Forms a boundary between a cell and the surrounding environment and controls the passage of materials into and out of the cell.

Cell Membrane (These are from my personal Biology Notes)-

Explanation:

Found in all cells (FIAC)

Selectivity permeable

Embedded with proteins

Regulates what enters or exits the cell

Phospholipid bilayer

Polar: head is hydrophilic (Likes water)

Nonpolar: tail; hydrophilic

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !

1. what is the relationship between the shape of an enzyme and the reactions they catalyze?

2. how does an enzyme inhibitor work?

separate your answers so i dont get confused : )