Simulating Macroinvertebrate Sampling for Assessing Freshwater Quality
CAROLINA LABSHEETS Overview NGSS Standards Objective Materials Teacher Preparations Quick Links Close Quick Links Open Quick Links Overview NGSS Standards Objective Materials Teacher Preparations Overview NGSS Standards Objective Materials Teacher Preparations Overview Clean, noncontaminated water is an essential natural resource for all living organisms—animals and plants. Assessing water quality provides students the opportunity to gather […]
Three-Point Linkage with Drosophila
Carolina LabSheets™ Overview In this lab students investigate the effects of gene linkage and crossing-over on the inheritance of three traits of Drosophila. They use the data they collect to construct a linkage map of the gene loci. 172051 Three-Point Linkage: The vial of testcross fruit flies is from a cross between females heterozygous for […]
Lumbriculus: Contraction Rate of the Dorsal Blood Vessel
Carolina LabSheets™ Overview In this introductory physiology lab, students determine the contraction rate of the dorsal blood vessel of the blackworm Lumbriculus. Students then design and conduct an experiment to determine the effect of temperature change or chemical exposure on the contraction rate. Student Lab Sheet Needed Materials* Lumbriculus culture (141720 for 30 students) dropping […]
Protists: Key to Algae Mixtures
Carolina LabSheets™ Overview In this lab activity students use a simple dichotomous key to identify several genera of algae contained in our algae mixtures. The key avoids the use of highly technical terms so that even beginning students can use it. Student Lab Sheet Key to Algae Mixtures Needed Materials Algae Mixture (see recommendations below) […]
Bacterial Growth on MacConkey Agar
Carolina LabSheets™ Overview In this lab studentsculture three bacteria on nutrient agar and MacConkey agar and record the results. Nutrient agar is nonselective, meaning that it supports the growth of a broad range of bacteria. MacConkey agar inhibits the growth of Gram-positive bacteria and is thus a selective medium. MacConkey agar is also a differential […]
Testing for Segregation of Alleles
Carolina LabSheets™ Overview In this lab, students test corn pollen for evidence of the segregation of alleles. The gene locus is waxy endosperm on chromosome 9. Students should be familiar with the iodine test for starch before performing this lab. Download Student Lab Sheet Needed Materials Starchy: Waxy Pollen (177010) for up to 25 students […]
Two-Point Linkage with Drosophila
Carolina LabSheets™ Overview In this lab students explore the genetic consequences of gene linkage using an F1 cross of Drosophila. 172050 Two-Point Linkage:The vial of F1 flies is from a cross between females having yellow bodies and white eyes (172290 yellow white) and wild-type males having gray bodies and red eyes (172100 wild type). Yellow […]
Vinegar Eels
Carolina LabSheets™ Overview In this lab, students observe vinegar eels. These small animals, barely visible without magnification, are found in unpasteurized cider vinegar, where they feed on the bacteria responsible for the conversion of apples to vinegar. Vinegar eels, Turbatrix aceti or Anguillula aceti (Muller, 1783), are examples of roundworms, or nematodes.. Download Student Lab […]
Introduction to Prokaryotes: Bacteria
Carolina LabSheets™ Overview In this lab students are introduced to the Domain Bacteria (Eubacteria). They will make smears of bacteria on microscope slides from pure cultures, perform a simple stain, and observe their stained slides under a microscope. The stained slides are best observed at 700–1000× with oil immersion; however, they can be viewed under […]
Introductory Genetics with Drosophila
Carolina LabSheets™ Overview Drosophila is one of the most popular model organisms for the study of genetics. This LabSheet can be used with a variety of our Drosophila cultures and sets in studies of monohybrid, dihybrid, and sex-linked crosses. The following crosses are especially recommended for introductory genetics activities although many others can be done. See our complete […]