Science 7th

What is the movement of water across a cell membrane?

osmosis

What is the process with which sugar is made in a cell is called?

photosynthesis

Cell membranes are made up of 2 layers of ____ molecules

lipid

Diffusion moves substances from ___ area of concentration to _____.

High, low

What absorbs energy from sunlight?

cholorphyll

What does the Bible call bread without yeast?

Unleavened

In which organelle of the cell does Photoseythesis occur?

chloroplasts

In photosynthesis, light energy splits H2O. What happens to the oxygen?

It is released as a waste product.

What is the process which releases energy?

respiration

In the Prophase what happens?

DNA shortens to become distinct chromosomes and nuclear envelope disappers

In the Metaphase what happens?

the chromosomes line up on equatorial plate

What happens in the Telophase

pinching of cell memebrane to become two daughter cells

What happens in Interphase

The DNA doubles.

In the Cytokinesis phase what happens?

Cytoplasm and organelles divide

What happens in the Anaphase

Sister chromatids separate and go to opposite sides of cell.

Cell membranes has ___ embedded in it which acts as carriers of molecules.

Protein

The type of membrane that allows only SOME molecules to pass.

Selectively Permeable

The type of membrane that does NOT allow certain molecules to pass.

Impermeable

The type of membrane that allows ALL molecules to pass?

Permeable

What are the 2 stages of Cell Cycle?

Cell division, Interphase

What are the 2 stages of Cell Division

Mitosis and Cytokinesis

Fementation occurs when there is NOT enough____ for respiration?

Oxygen

Fermentation can produce ____ cells of yeast or ____ ____ muscle cells causing cramping.

Alcohol, lactic acid

Cell division that is out of control produces what human physical disease?

Cancer