Digestive Enzymes and Marine Development

The video tutorial covers the selection of a marine field site for collecting species used in laboratory experiments. It discusses various species and their development strategies, focusing on digestive enzyme activity in embryos. The tutorial explains the use of API strips to measure enzyme activity and presents results showing changes in enzyme activity across different development stages. The research compares enzyme changes among species with different development strategies.

What is the primary purpose of the research conducted at the marine laboratory?

• To develop new marine conservation strategies

• To identify and compare digestive enzymes in different species

• To study the behavior of marine mammals

• To explore the effects of pollution on marine life

Which species is known for its planktotrophic development?

• Crepitula atrasolia

• Crepula onyx

• Capitula marginalis

• Crepitula oozolatalina

What is the main focus of the researcher's internship?

• Exploring the effects of climate change on marine life

• Developing new marine conservation strategies

• Studying marine mammals

• Working with the Smithsonian Tropical Research Institute

What is the purpose of comparing digestive enzyme activities in different species?

• To understand the evolutionary history of marine species

• To develop new enzyme-based medications

• To determine the best diet for each species

• To identify large shifts in enzyme activity during development

How are the embryos collected from the adult snail?

• Using a net

• Using a vacuum pump

• By hand

• With a forceps or pipette

What is the function of the API's EYM strips in the research?

• To measure the size of embryos

• To identify the species of marine organisms

• To analyze the genetic material of embryos

• To determine the existence and activity of digestive enzymes

What is the temperature at which the API's EYM strips are incubated?

• 100 degrees Celsius

• 37 degrees Celsius

• 50 degrees Celsius

• 73 degrees Celsius

What indicates high activity levels for a specific enzyme in the spectrophotometer results?

• A very high peak

• A moderate peak

• A flat line

• A low peak

Which enzyme showed a clear increase in activity from the egg to the villager stage?

• Protease

• Alkaline phosphatase

• Lipase

• Amylase

What is the significance of comparing enzyme changes across species with different development strategies?

• To understand the impact of environmental changes

• To develop new species

• To compare evolutionary adaptations

• To find the fastest growing species