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

What does the term nucleosynthesis refer to? A. the creation of atomic nuclei B. the formation of galactic nuclei C. the start of nuclear reactions inside stars D. the production of dark energy through nuclear fusion

Dna determines the structure of proteins produce by cells?

Which best describes the theory of evolution? A. a theory supported by evidence B. an educated guess C. a hunch made by scientists D. a hypothesis with no evidence

You disrupt all hydrogen bonds in a protein. what level of structure will be preserved?

If only the deterministic hypothesis is correct, undifferentiated stem cells isolated from bone marrow and grown in vitro will:

After several miles of running and sprinting in intervals, the runner's muscles ache and feel fatigued. Which is the best explanation for what has occurred?

Which piece of lab equipment is used to measure the mass of a chemical sample?

9. What are the major differences between P and S waves from an earthquake and which instrument do scientists use to measure these waves?

Part 1: Universal solvent Describe what happens in each beaker.

What will likely happen to the body if the joints are stiff, infected or not functioning as expected?