Which of the choices below is the salt level-monitoring part of the nephron?

a. loop of Henle

b. principal cell

c. macula densa

d. vasa recta

Which molecule is less soluble in water--a fat or a phospholipid? Why?

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

What feature is the same in the formation of many sedimentary rocks and fossil fuel? many sedimentary rocks and fossil fuels- A-require material to be buried and exposed to heat amd pressure.

A scientist observes a cell that is surrounded by a cell wall and that lacks a nucleus and membrane-bound organelles. what can the scientist conclude about the cell?

Dissolved carbon dioxide and ph in the oceans are inversely related. a. True b. False

Most of the world's food supplies comes from 14 species of crops. Which of these crops are the most important? A) corn, potatoes, and hay B) wheat, rice, and sugarcane C) alfalfa, rice, and wheat D) grasses, bananas, and beans

Tryptophan is an amino acid necessary for E. coli survival and growth. E. coli contain genes coding for enzymes that synthesize tryptophan. These genes are grouped together on a segment of DNA called the tryptophan (trp) operon.

Why does it make sense that the sensors and controller of body temperature reside in the brain? A. Because the brain enables the body's response to temperature changes B. Because deep inside the brain is considered the body's core C.

List the four (4) major groups for the antidepressant medications and the prototype of each one. what are the major differences between the four (4) classes?

Which causes an increase in greenhouse gasses