Cell Biology Answers

Discuss in details the importance of telomeres in DNA replication. Why are they formed?

A few years ago, the labels from one class section's experimental treatments plants fell off in the greenhouse and got swept away! One group was the only group in the section to test the effects of indole acetic acid (IAA) on bean plants. Other groups applied GA to their bean plants. The IAA group applied lanolin paste to one side of their bean stems. What should they for in order to identify their experimental plants from other groups?

life cycle stage of a cell in which it divides into two

What are the similarities and differences between the reactions that lead to the activation of G proteins and the reactions that leads to the activation of Ras?

What happens to the surface area to volume ratio of a cell as the cell grows?


what happens to the sa:v ratio when a cell undergoes division?

what happens to the surface area to volume ratio of a cell as the cell grows?


what happens to the sa:v ratio when a cell undergoes division?

What route is taken when the mRNA leaves the nucleus?

Four structural adaptations of the leaf for photosynthesis and state how each of them facilitates in the process

10. Which statement is false about fungi?



Some fungi live on trees.

Many fungi form mycelia of hyphae.

Most fungi are multicellular, although some are unicellular.

Most fungi get their nutrients by ingesting small pieces of other living organisms.

Some fungi can live symbiotically with other organisms.

Using genetic engineering techniques, you have created a set of proteins that contain two

(and only two) conflicting signal sequences that specify different compartments. Predict which

signal would Wln out for the following combinations. Explain your answers.


A. Signals for import into the nucleus and extracellular matrix.


B. Signals for export from the nucleus and import into the peroxisome.


C. Signals for import into mitochondria and retention in the Golgi complex.