Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 1019
TLS Online TPP Program

#Question id: 1044

Are all fungi detrimental (bad) for other organisms?

#Unit 4. Cell Communication and Cell Signaling

  1. Yes-think of molds that destroy plant crops, or fungal infections that cause athlete's foot. All fungi are bad for organisms they colonize.

  2. Yes-fungi feed directly on organic material (oftentimes killing it or feeding on it after the original organism has died). As such, they are always bad for other organisms.

  3. No-fungi are sometimes good, sometimes bad for other organisms. It really depends on which fungus you're talking about and the relationship it has with the other organism. Some fungi, for example, can form a symbiotic relationship with plant roots that increases their nutrient and water absorption. This is good.

  4. No-fungi are ALWAYS good when they interact with other organisms. There's never a downside or negative aspect to such interactions. Both sides always benefit from the relationship.

More Questions
TLS Online TPP Program

#Question id: 11122

#Unit 9. Diversity of Life Forms

Phylogenetic hypotheses (such as those represented by phylogenetic trees) are strongest when
TLS Online TPP Program

#Question id: 11123

#Unit 9. Diversity of Life Forms

Cladograms (a type of phylogenetic tree) constructed from evidence from molecular systematics are based on similarities in
TLS Online TPP Program

#Question id: 11124

#Unit 9. Diversity of Life Forms

A researcher compared the nucleotide sequences of a homologous gene from five different species of mammals with the homologous human gene. The sequence homology between each speciesʹ version of the gene and the human gene is presented as a percentage of similarity.

What probably explains the inclusion of rabbits in this research?
TLS Online TPP Program

#Question id: 11125

#Unit 7. System Physiology – Animal

In chemical synapses that involve a so-called second messenger, typically a G-protein linked to the postsynaptic receptor is activated when neurotransmitter binds to that receptor. Which of the following represents an activity performed by the activated second messenger?
TLS Online TPP Program

#Question id: 11126

#Unit 7. System Physiology – Animal

Which of the following is characteristic of the events occurring at an excitatory synapse?
TLS Online TPP Program

#Question id: 11127

#Unit 7. System Physiology – Animal

As the receptor potential rises higher above threshold, which of the following best characterizes the new frequency of action potentials?