Table of Contents

Endo and Exo -cytosis

Active and Passive Transport

Cell Division

Cell Processes and Energy – Day 2 Notes

Endo and Exo -cytosis

Simulation #1

Simulation #2

Endo – inside, within

Exo – outside, outer

Endo and Exo -cytosis

Endocytosis is a process in which cell takes in materials from the outside by engulfing and fusing them with its plasma membrane.

Exocytosis: when materials leave the cell by the membrane "spitting it out" . It is the opposite of endocytosis.

The Cell in Its Environment

Crossing the Cell MembraneMolecules move into and out of a cell by means of passive or active transport. Complete the boxes, and describe where the concentration of each substance is high or low.

Anaerobic vs. AerobicRespiration

Uses no oxygen

Makes a little energy

Uses oxygen

Makes a lot of energy

To release energy from food molecules and make ATP!

Why do we need ATP?

To run chemical reactions that keep us alive and functioning.

Purpose of cellular respiration?

Not enough oxygen for aerobic respiration

Fermentation-releases energy from food molecules by producing ATP in the absence of oxygen. (Anaerobic = no oxygen)Two types: alcoholic fermentation, lactic acid fermentation

Fermentation: Anerobic respiration

The process by which cells release energy by breaking down food molecules without using oxygen.

Cell Division

When one cell splits in half during cell division, the result is two new cells. Each of those two cells can divide into two more, and so on.

Mitosis – Eukaryotic Cells

Chromatids: the “X” shaped copies

of the chromosomes

Binary Fission: Prokaryotic Cells

Video

Prokaryotes, such as Bacteria, use Binary Fission for cell division/replication.

The diffusion of water through a cells membrane is called __________ ? osmosis

When a cell needs to remove a large particle, the process it uses is called

__________________?exocytosis

The process of __________________ occurs when a cell needs to bring a large particle into

the cell.

endocytosis

Movement of particles against the normal flow of diffusion is called ______________ . active transport

The movement of dissolved materials across a cell membrane without using cellular energy is

called __________________?passive transport

During cellular respiration _______, a high energy molecule, supplies energy to the cells.

ATP

When your muscles are sore after hard exercise, it is because the cells don’t have

enough oxygen. This process is called __________ . fermentation

Chromosomes with matching information are called __________________.homologous chromosomes

The two copes of chromosomes tht form an X shape are called _____________.chromatids

Mitosis is a form of cell division that _______________ don’t use since they don’t

have a nucleus, instead they use _______________ fission .

prokaryotic cells

__________ ensures that each new cell receives a copy of each chromosome in normal

eukaryotic cells..

Mitosis

When you are hungry your body is telling you that you need ________ and you are growing

and making new _______.energy

binary

cells