Please help! 1. What is the relationship between DNA and gene expression? How do they depend on each other?

2. Why is it important for the “on” and “off” mechanism of gene regulation?

3. Since there are DNA segments that do not code for amino acids, what is their purpose?

**Please use simple answers considering I'm 10th-grade, thank you! <3**

One of the largest seafood exporters to the united states is a. china b. brazil c. mexico d. saudi arabia

Sampling lake water for microscopic organisms is not as easy as it sounds when you want to both count and identify species. in a given water sample, your bacteria of choice can be rare or difficult to culture, particularly given the mixture of bacteria in a biofilm. which of the following culture media would be best for growing fecal coliforms when they are relatively less abundant than other bacteria in the lake? anaerobic culture medium enrichment culture medium complex culture medium basic culture medium

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.)chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.