Cell Communication, Feedback, Cell Cycle, & Cell Division- APBio

When is the reduction phase of meiosis?

• Anaphase I

• Metaphase I

• Metaphase II

• Anaphase II

Which of the following correctly describes how positive and negative feedback mechanisms are similar?

• Both feedback mechanisms occur in response to stimuli.

• Both feedback mechanisms act to reverse changes in a system.

• Both feedback mechanisms amplify changes to the set point of a system.

• Both feedback mechanisms move a system further from its starting point.

From the perspective of the ligand arriving at the cell membrane, what are the three remaining stages of cell signaling? 

• signal reception, signal transduction, and cellular response.

• the paracrine, local, and synaptic stages.

• signal reception, nucleus disintegration, and new cell generation.

• the alpha, beta, and gamma stages

When does the processes of transduction begin? 

• when the signal molecule changes the receptor protein in some way.

• when the chemical signal is released from the alpha cell.

• after the target cell divides.

• after the third stage of cell signaling is completed.

What is produced by meiosis?

• four genetically different diploid cells

• four genetically different haploid cells

• two genetically identical haploid cells

• four genetically identical haploid cells

In what phase of meiosis would the chromosomes below be observed?

• Prophase II

• Prophase I

• Interphase

• Metaphase I