Which internal system of communication-the endocrine system or nervous system-would be responsible for the growth spurt that occurs at puberty? Which system would control the quick withdrawal of your foot when you step on a tack?

Explain why a red blood cell is unable to replace damaged proteins

During the Cambrian explosion approximately 535 to 525 million years ago, 1. all modern species of animals suddenly appeared. 2. animals rapidly diversified in the oceans. 3. a massive volcanic eruption nearly wiped out life on Earth. 4.

Based on your experiments, what conditions would most likely allow two phytoplankton species competing for the same resources in a chemostat to coexist for extended periods of time?

What is developed during the process of technological design?

Transcription in eukaryotes requires which of the following in addition to RNA polymerase? A) the protein product of the promoter B) ribosomes and tRNA C) aminoacyl synthetase D) start and stop codons E) several transcription factors (TFs)

All known species can be grouped into three domains. what are they?

Select the correct answer. Which of the following is the correct definition of a biography? OA an account of a fictitious experience that relies on figurative language B. an account of a single significant experience in a person's life C.

Acid rain is the direct result of acid released by burning fossil fuels. True False

List five properties that are used most commonly to identify minerals.

What are the basic building blocks of DNA and RNA? A. nucleotides B. phosphorous O C. proteins D. sugar Reset