What facilitates passive transport across a cell membrane?

adenosine triphosphate

solute equilibrium

concentration gradient

transport proteins

Dna is made of two chains of nucleotides. which type of bonds hold the chain together

Which is not true of open-ocean sediments? select one: a. they can be siliceous. b. they can be composed of the shells of single celled planktonic organisms. c. they exhibit heterogeneous distributions across ocean basins. d.

For a character trait to evolve in a population, it must: a. be heritable, mutate, and affect reproductive success b. be hidden, vary in the population, and affect reproductive success. c.

Which of the following steps was necessary for the formation of all fossil fuels? The remains of plants and animals are buried at the bottom of oceans. Carbon bonds break, producing methane gas. Heat and pressure build up on top of decaying matter.

Individuals with obesity spend ___% more on health care costs and ___ % more on medications per year than individuals of normal weight.

The volcanoes on Mars resemble ___ on Earth.

A mother that carries the colorblind allele and a father with normal vision can have children that are only

Purpose of grinding the liver tissues

Why do organisms do meiosis

Which of the following recyclable object takes the greatest amount of time to decompose?