What is a physical or mental representation of an object or an event

What is a Centrioles

1. Which of the following appeared on Earth most recently? a. chordates b. tetrapods c. dinosaurs d. single-gene algae 2. Dinosaurs appeared before a. mammals b. photosynthesis c. chordates d. land plants

Describe the proper steps of hand washing

What is the function of the promoter in a DNA molecule? It provides RNA polymerase with a place to terminate transcription. It provides RNA polymerase with a place to begin transcription.

Where is the spinal cord found? in the backbone below the frontal lobe below the thalamus in the occipital lobe

What current will an ammeter register if 960C of charge flow through it in 2 minutes?

Listen to the three examples of sound and related spectrogram. Make one observation about each of the three spectrograms.

Whats the evolution of the microscope in timeline

Can life subsist on anything else but water?

What are the effect of a greater number of cysteine amino acids on the stability of the proteins?