What is the estimated age of the trilobite fossils (bottom layer of fossils) ?

A student makes a claim that a cell is undergoing the process of transcription. What evidence would be present to support this claim?

Is a form of rheumatism that causes chronic muscle pain.

All chordates live in the ocean. True or false

He graph below shows the motion of a person. Describe the motion. * A. The person is traveling at a constant speed of 1.5 meters per second for 10 seconds. Then the person stands still for 10 seconds. B.

Which of the following tissues present in the dicot stem is meristematic in nature? hypodermis collenchyma cambium

About 10% of women experience severe pain at the entrance of the vagina. this is known as

Which of the following correctly describes homeostasis in protists? (A) Paramecium maintain homeostasis by swelling and bursting (B) Vacuoles allow water to enter and exit the paramecium (C) Flagella allow paramecia to move through a substance (D)

List 4 observations that indicate that a chemical reaction may be taking place

Which statement describes the light reaction of photosynthesis? A. Water molecules are combined to make food. B. Air and water create energy for a plant. C. Carbon dioxide is put together with glucose. D. Water molecules are split apart.

4. Where are the two places we find receptor proteins? Inside the target cell, target cell plasma membrane Signaling cell plasma membrane, inside the target cell Signaling cell plasma membrane, ligand Target cell plasma membrane, signaling cell