The iris in the human eye contracts and expands, controlling the amount of light that reaches the retina. What types of muscle control this?

If a cell has an increased need for a particular molecule that is already present in a higher concentration within the cell than in the extracellular fluid, the cell might use active transport, which usually moves molecules?

When attempting to decipher the relative ages of strata in a stratigraphic column, it is important to look not only at the positioning of the strata but also at their A. elevations B. distributions C. rock types D. colors

What evidence did Darwin present following his voyage?

which best statement best describes the relationship between adenosine diphosphate (ADP) and Adenosine triphosphate (ATP)

Trisha wants to find out whether a certain pesticide is carcinogenic to amphibians. trisha is designing an experiment to test the problem. she is planning on exposing frogs of the same species to different amounts of the pesticide.

If a cell starts with 48 chromosomes then each cell or gamete produced at the end of the process will contain how many chromosomes?

How is water use correlated with crop production and the types of crops produced?

Which best describes the different modes of bacterial reproduction? In binary fission, the two new cells that are formed are susceptible to the same antibiotic.

Mitosis produces which cell type? O haploid O diploid O chromosome gamete

Bacteria provides a valuable clue to the origin of life on earth. which of these is the most likely process by which bacteria was formed?