Marine Biology Overview

What role do diatoms and golden-brown algae play in the marine ecosystem?

Which groups of organisms are considered critical components of plankton in marine environments?

In which size category do diatoms and golden-brown algae fall within marine ecosystems?

Why are diatoms and golden-brown algae considered important for marine life?

Which of the following best describes the relationship between diatoms, golden-brown algae, and the marine food chain?

Diatoms and Golden-Brown Algae

Essential components of plankton and nanoplankton.
Form the foundational base of the marine food chain.

Kingdom: Fungi

Comprises thousands of species of eukaryotic, spore-bearing organisms.
Obtain simple organic compounds primarily through absorption.
Decompose complex organic matter into simpler organic and inorganic compounds.
Play a crucial role in recycling carbon, nitrogen, phosphorus, and other vital elements for other organisms' use.

Hyphal Ultrastructure

Hyphae have a rigid wall and contain protoplasm.
Structure features septa (cross-walls), plasma membrane, nuclei, and various cytoplasmic organelles.
Includes growing tips and vacuoles essential for growth and function.

Reproduction of Fungi

Asexual reproduction methods include budding (in yeasts) and lightweight spores (in filamentous fungi).
Yeast fermentation process converts glucose (C6H12O6) to ethanol (C2H5OH) and carbon dioxide (CO2) while producing energy.
Yeast is utilized in alcoholic beverage production, bread-making, and as a source of growth factors, providing vitamins B1 (Thiamin) and B2 (Riboflavin).

Explore the essential roles of diatoms and golden-brown algae in marine ecosystems. This quiz highlights their significance as key components of plankton and nanoplankton, forming the basis of the ocean's food chain.