Emzyme & Photosynthesis Lab

What are most enzymes made up of?

pH is a measure of what?

How does salt affect an enzyme?

The enzyme catecholase catalyzes a reaction where ___, the substrate becomes ___ (product).

What does benzoquinone look like?

What instrument can we use to measure how much color change happens during a reaction?

How does a Spectronic 20 measure catecholase activity?

How does Spectronic 20 measure color changes?

What is transmission on the spectrophotometer?

What is absorption when speaking of the spectrophotometer?

WHat is the relationship between product formation & absorbance?

What pigment causes leaves to be green?

What is the biochemical process where plants absorb light & convert it to useable chemical bond energy?

Which color in the visible light spectrum has the longest wavelength?

Which color in the visible light spectrum has the shortest wave length?

The green pigment that absorbs light & is directly involved in photosynthesis is called ____.

What colors of light are readily absorbed by chlorophyll a?

Chlorophyll looks ___ ___ to the eye.

___ ___ also absorb solar energy but they then pass this absorbed energy over to chlorophyll a for photosynthesis.

What color does chlorophyll b look to our eyes?

____ absorb a great deal in the blue & green range & appear to our eyes as various shades of yellow or yellow-orange.

A ___ ___ layer on a leaf prevents water loss & but also prevents gas exchange.

The outer layer of cells on a leaf contain ____ through which gas exchange occurs.

What is the function of air spaces within a leaf?

Name 2 functions vascular tissue within leaves.

Stored glucose molecules are chemically bonded together for later use & stored as ____.

What method can be used to separate components of a mixture of molecules?

What 2 things determine rate at which solvent travels up paper in paper chromatography?

A completed paper chromatography strip is call a ____.

What is happening to a leaf when it is senescing?

Plants that drop their leaves at the beginning of the inhospitable season are called what?

During the process of senescence a plant does what?