The effect of varying temperature on the permeability of plasma membrane on beetroot.

Authors Avatar

BIOLOGY LAB 1

Name: Arrpita Sethi

Candidate Number:

Year: 2010-2012

Date:

Title: The effect of varying temperature on the permeability of plasma membrane on beetroot.

Research Question:

How does varying temperature affect the permeability of the plasma membrane of beetroot cores?

Hypothesis:

Beetroot is a eukaryotic cell, and like other eukaryotic cells, beetroot cells have many types of cell organelles. Some of the organelles are bounded by a single membrane, e.g. lysosomes, Golgi apparatus, vacuoles; some are bounded by two membranes (an envelope), e.g. nucleus, mitochondrion.

Join now!

Beetroot has a betalain pigment, which makes it appear dark red or purple in colour.

By putting beetroot cores into water with varying temperature, it affects the cell membrane. The cell membrane is made up of two layers of molecules, so it's called "bilayer" ("bi" means two). The molecules in this bilayer are called phospholipids. Each of these phospholipids has a head and a double tail. The head is hydrophilic. The tail is hydrophobic. "Hydro" means water "philic" means, "loving." "Phobic" means, "fearing." Thus hydrophobic means it doesn’t attract water, while hydrophilic means it attracts water. The tails pack together, ...

This is a preview of the whole essay