Which of the following can regulate gene expression in eukaryotes?

A transcription factor

b plasmids

c lipids

d lac operons

Quincy listed some natural resources in a table. Which best completes the table? A: x: no y:natural gas B: x:yes y:coal. C: x:no y:wind. D: x:yes y:sunlight

Phytoplankton play an important role in which of the following biogeochemical cycles? A. the nitrogen cycle B. the phosphorus cycle C. the carbon cycle

What happens if a mutation is in a gamete

If you take a bite of something that is highly unappealing (for example meat that tastes rotten) what is the response of the salivary glands? What does this tell us about the regulation of digestive enzyme secretion from the salivary glands?

Where in the cell does translation occur? A. the promoter B. the DNA C. the nucleus D. the cytoplasm

Which system and rationale best pairs with the musculoskeletal system to ensure fluid movement of the human body? 1. the digestive system, to obtain the energy that is needed to move the muscles with smooth, coordinated effort 2.

What is a weak, temporary bond

Why does the need for living space cause problems for some organisms?

Name two factors that will determine whether a non native species becomes an invasive species

Soaps, by themseives, are examples of a. surfactants. b. degerming agents. c. antiseptes d. both a and b.