Unlike all other algae, they have no cell wall. Most euglenoids make their own food using light energy from the Sun but are capable of surviving in the dark if fed organic materials. Some species are heterotrophic, meaning they do not produce their own food but feed on organic matter suspended in the water. Golden-brown algae (Chrysophyta). The Chrysophyta, or golden-brown algae and diatoms, are named for the yellow pigments they possess.
Complete an undergraduate degree in a broad field. To qualify for a PhD program, you will need a solid record of undergraduate coursework from a reputable university. This degree should demonstrate your potential for both advanced coursework and independent research.
Getting a doctorate is intellectually rewarding. Unfortunately, it doesn't tend to be financially rewarding, at least not in the short term. Most PhD students live on their earnings from teaching and research assistantships or other low-paying employment. So, your starving student days may not be behind you.