BIO 111 TAMU lab exam 1 2024 with 100% correct answers

Accuracy - correct answer a measure of how close a result matches a correct or standard value. For example, how close a dart is to the bullseye in a dartboard is an indicator of accuracy. Precision - correct answer a measure of variability. For example, three darts placed close together on a dartboard indicate high precision, but if this cluster of darts is far from the bullseye it would also indicate low accuracy. an ideal experiment - correct answer yields results with both high accuracy and high precision. Although biological and/or environmental conditions may limit one or both of these features, poor technique is an unacceptable source of errors. Aliquot - correct answer a portion of something (noun); or to divide or transfer a portion of something (verb). For this lab, aliquot refers to an amount of liquid. Micropipette - correct answer an instrument used to measure/deliver amounts of liquid with high accuracy and precision. Micropipettes are expensive so treat these with respect. Spectrophotometer: - correct answer an instrument for measuring the intensity of light that is transmitted through a sample (transmittance) or absorbed by a sample (absorbance). In this lab, you will measure light absorbance at a defined wavelength. The use of a spectrophotometer is called spectrophotometry.