Which safety rule is most important when smelling the product of a chemical reaction?
q...
Biology, 02.01.2020 12:31 jasminebaeeecx
Which safety rule is most important when smelling the product of a chemical reaction?
question 5 options:
hold with tongs
use a wafting motion
wear closed-toed shoes
keep nose directly above open container
Answers: 3
Biology, 22.06.2019 01:00
Which of the following would be a body response when stepping outside without a coat on a snowy day? a. senaceous glands. secrete more senum b. more liquid is transported by the body to the skin fir insulation c. blood vessels in the skin narrow and contract d. blood vessels in the skin expand
Answers: 1
Biology, 22.06.2019 03:30
Cold case files recently began re-investigating an old murder case. the murder took place in the park; a young man, james, was hit over the head with a brick and killed. police suspected the jealous former boyfriend of james' wife, karen. whoever killed james may have washed their hands in a near-by bird bath as detectives found blood in the bird bath. since the murder took place before dna fingerprinting was available, the suspected killer, ronnie, went free. detectives are now reviewing the blood evidence using dna fingerprinting. based on the dna fingerprints of all possible suspects, who is james' killer?
Answers: 2
Biology, 22.06.2019 04:00
Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.
Answers: 2
Biology, 22.06.2019 05:30
Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.
Answers: 2
Mathematics, 11.03.2021 02:00
Mathematics, 11.03.2021 02:00
Mathematics, 11.03.2021 02:00
Chemistry, 11.03.2021 02:00
Mathematics, 11.03.2021 02:00
Mathematics, 11.03.2021 02:00