The atomic number of an element represents the number of:

A. neutrons

B. protons

C. electrons

D. protons and neutrons

Biodiversity is the variety of all the different __ in a given area.

A DNA molecule is shaped like a a. long, thin rod. b. spiral staircase. c. straight ladder. d. triple helix.

Describe the vegetation: What are 3-5 common plant types found in this area (usually types of trees) ? It is important to remember that many non-native species of plants are found all over the world.

Explain how human activity, pollution, and acid rain are all related to each other

Which organisms is a secondary consumer in this food web?

In blank, one diploid cell divides and makes four haploid cells

The cellular machinery that replicates DNA inserts an incorrect base A) most of the time B) about half the time C) roughly once on every million bases D) roughly once in every 10 million generations

Proteins are important biomolecules. Proteins are synthesized and often packaged for secretion into other cells within an organism. A variety of organelles play a role in producing, packaging, and moving proteins.

Descending order arranges labels alphabetically from a to z. a. True b. False

Which statement best describes the life cycle of plants such as ferns? Plants have a two-part life cycle, spending part of their life in a diploid phase and part in a haploid phase. Plants have a single life cycle and are entirely diploid.