Advance Biology Semester 1 Test 2020

Front

What phylum is characterized by animals that have a segmented body?

Back

Arthropoda

Front

Which prokaryotes are most vulnerable to penicillin due to their peptidoglycan synthesis?

Back

Gram-positive bacteria

Front

What cells in a sponge are responsible for trapping and removing food particles from circulating water?

Back

Choanocytes

Front

In which biome would you find the greatest number of bird species, determined by the number of vertical strata?

Back

Tropical rain forest

Front

What term describes the interaction between termites and the protozoans that feed in their gut?

Back

Mutualism

Front

Define 'mutualism' in ecological terms.

Back

A symbiotic relationship where both species benefit.

Front

What is the primary function of choanocytes in sponges?

Back

To trap and remove food particles from water.

Front

What is the significance of vertical strata in determining bird species diversity?

Back

More strata provide more habitats and resources, leading to greater species diversity.

Front

What is peptidoglycan and its role in bacteria?

Back

A polymer that forms a protective layer in bacterial cell walls, crucial for structural integrity.

Front

What distinguishes gram-positive bacteria from gram-negative bacteria?

Back

Gram-positive bacteria have a thick peptidoglycan layer, while gram-negative bacteria have a thin layer and an outer membrane.