Examine how photosynthetic prokaryotic cells changed the atmosphere of early Earth

What are the two molecules phages made out of?

a meterologists wants to create a visual aid representing the percentages of different gases in earths atmosphere? which chart or graph would best convey this data?

A 3-year-old is making play cakes in a sandbox and is eating the play cakes. The sand was also being used by cats as a litter box and was contaminated with toxoplasmosis. Which of the following would most likely be present? A. Granuloma formation. B.

One major advantage of sexual reproduction over asexual reproduction is that in sexual reproduction

The digestive system and the excretory system both excrete waste. Which best describes how waste is secreted in each system?

How is plasma constructed in blood?

Which of the following is descriptive of pertussis? a. Initial stage resembling the common old b. Prolonged illness, sometimes symptoms may last for months. c. Bacterial disease treated with erythromycin c. All of these are descriptive of pertussis

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.