Biology, 15.10.2019 05:50 petertester7up
Which technique could be used to determine the relative number of bases in fragments taken from a
sample of dna?
(1) electrophoresis (3) paper chromatography
(2) cloning (4) light microscopy
Answers: 2
Biology, 22.06.2019 01:00
When does the circulatory system work with the respiratory system? a. during blood cell formation b. during cellular respiration c. during intestinal digestion d. during a viral infection
Answers: 2
Biology, 22.06.2019 07:30
Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.
Answers: 1
Biology, 22.06.2019 10:20
Casts and mold are a type of preservation where the original material decays, leaving a mold in surrounding rock that can be filled with another sediment a. true b. false
Answers: 2
Biology, 22.06.2019 18:50
Which if the following best describes why invertebrates isn’t considered a scientifically valid word when classifying animals
Answers: 1
Which technique could be used to determine the relative number of bases in fragments taken from a
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