Describe the three-part structure of a nucleotide

What is one main difference between eukaryotic cells and prokaryotic cells?

Which of the following come from types of organisms that lived during only one short period of time and that are used to determine the relative age of rocks? a. imprints b. index fossils c. trace fossils d. extrusions

Explain why fungi cannot be stained by using stains that are commonly used to stain bacteria

Louisa put a bowl of water and a bowl of sand in the sun. She put a thermometer in each bowl. Then she recorded the temperature at the start and after 30 minutes. After 30 minutes, the sand had heated more than the water.

Suppose that as the result of extensive pollution to the ocean, kelp forests are killed. Explain how this would affect not only kelp populations, but also many other forms of marine life

The atomic mass of common krypton is 84, and its atomic number is 36. Krypton-82 has how many neutrons within each isotope? A. 46 B. 48 C. 118 D. 120

Based on the table, which kingdom includes an equal number of organisms with each body type? Fungi Eubacteria Eukarya Protista

What role might an abiotic factor such as temperature play in the evolution of a species?

How do electrons gain energy in photosystem 1? a. They absorb photons. b. They use energy in the form of glucose. c. They take energy from ATP molecules. d. They use energy from a hydrogen ion pump.

Is hydrogen gas a compound or mixture