Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 17986
TLS Online TPP Program

#Question id: 2115

Which of the following statements about diffusion is true?

#XL - T Zoology

  1. It is very rapid over long distances.

  2. It requires an expenditure of energy by the cell.

  3. It is an active process in which molecules move from a region of lower concentration to a region of higher concentration.

  4. It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration.

More Questions
TLS Online TPP Program

#Question id: 8905

#XL - T Zoology

Terry saved some of the tooth-like objects within the hagfishʹs round mouth to analyze their composition in his mentorʹs biochemistry research lab. Terry will find that they are composed of the same protein found in reptilian
TLS Online TPP Program

#Question id: 1752

#XL - Q Biochemistry

Dendritic cells can be driven from a resting state to an activated state by the T-cell surface molecule:
TLS Online TPP Program

#Question id: 15737

#XL - S Microbiology

The basic event of development in higher organisms is
TLS Online TPP Program

#Question id: 19852

#XL - P Chemistry

In thermodynamics, a process is called reversible when
TLS Online TPP Program

#Question id: 164

#XL - T Zoology

The uncommon amino acid selenocysteine has an R group with the structure —CH2—SeH (pKa = 5).  In an aqueous solution, pH = 7.0, selenocysteine would: