General Biology Q2

ATP Meaning

adenosine triphosphate

ATP

is an organic molecule used for short-term energy storage and transport in the cell

Pi stands for?

inorganic phosphate group(PO 3/4)

Exergonic reaction

proceeds with a net release of free energy

Endergonic reaction

one that absorbs free from energy its surroundings

pigments

Light from the sun is absorbed by colorful compounds

Chlorophyll

It gives plants their green color and may hide the other pigments found in leaves.

Chloroplasts

This is where the chlorophyll found

Chlorophyll A

is the core pigment that absorbs sunlight for light-dependent photosynthesis. It readily absorbs violet/blue and red light but not much of the lighter blue, and green and yellow light. It looks bluish green.

CHLOROPHYLL B

It is structurally only slightly different from chlorophyll a but its absorption spectrum is somewhat different. It absorbs more in the blue and orange-red ranges. It looks yellowish green.

CAROTENOIDS

They absorb light from violet to the greenish-blue range. They appear in various shades

of yellow or yellow orange to our eyes.

ANTHOCYANINS

They do not participate in photosynthesis and may appear red, purple, or blue. They occur widely among higher plants. They are pigments that generally give color to flowers but also occur in leaves and fruits.

XANTHOPHYLLS

They pass along light energy to chlorophyll a and act as antioxidants.

Accessory pigments

These are important since they help absorb light and then pass the energy to chlorophyll A, a primary pigment.

Chlorophyll A

A primary type of chlorophyll used in photosynthesis