He haploid generative cell of male angiosperm gametophytes divides to produce two haploid sperm cells. what type of cell division is this?

Cns nerve fibers regenerate because of the actions of schwann cells. cns nerve fibers regenerate because of the actions of schwann cells. a. True b. False

Which of these is changed by the Milankovitch cycles? A. The duration of seasons on earth B. The length of a year on earth C. The amount of solar energy that reaches earth D. The reflectivity of earth

Give a scenario where a cell may need to perform a form of exocytosis

An increase in CO2 could cause

Millions of years ago, many plants use carotenoids as their primary pigment. Today most plants use chlorophyll. What could explain this cahnge

Which statement about the cell membrane is true? A. It contains cellulose and sugars that are involved in communication. B. It is present in animal cells only. C. It is rigid and elastic for supporting the cell's shape. D.

Hailey needs to identify internal costs so she can price her product accordingly. Which cost will be part of Hailey's calculation? A. cost of endangering species B. cost of deforestation C. cost of air pollution D. cost of disposing by-products E.

What is the main difference between prokaryotic and most eukaryotes cells? A. Eukaryotic cells from multi-cell tissues, Prokaryotic cells are single cell. B. Eukaryotic cells from single cell, Prokaryotic cells are multi-cell tissues. C.

List (A) the primary materials necessary for and (B) The materials produced by photosynthesis

How is fermentation different from cellular respiration?