Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 6491
TLS Online TPP Program

#Question id: 9180

Which of the following statements can be accurately made about light in aquatic environments?

#Unit 9. Diversity of Life Forms
  1. Water equally reflects and absorbs all wavelengths of light.
  2. Longer wavelengths penetrate to greater depths.
  3. Light penetration largely limits the distribution of photosynthetic species.
  4. Most photosynthetic organisms avoid the surface where the light is too intense.
More Questions
TLS Online TPP Program

#Question id: 210

#Unit 1. Molecules and their Interaction Relevant to Biology

Enzymes with vitamin B6 as the prosthetic group catalyze a variety of reactions involving 
TLS Online TPP Program

#Question id: 12747

#Unit 13. Methods in Biology

Name the plant protein that bind tightly to specific carbohydrate structure.
TLS Online TPP Program

#Question id: 11209

#Unit 7. System Physiology – Animal

Acetylcholine released into the junction between a motor neuron and a skeletal muscle binds to a sodium/potassium channel and opens it. This is an example of ________.
TLS Online TPP Program

#Question id: 3815

#Unit 3. Fundamental Processes

Use the figure to answer the following question. A space probe returns with a culture of a microorganism found on a distant planet. Analysis shows that it is a carbon-based life-form that has DNA. You grow the cells in 15N medium for several generations and then transfer them to 14N medium. Which pattern in the figure would you expect if the DNA was replicated in a conservative manner?
TLS Online TPP Program

#Question id: 1774

#Unit 4. Cell Communication and Cell Signaling

hinge region  provide flexibility to antibody. Which amino acid is responsible for these flexibility?