Biology, 30.08.2019 19:30 VampireQueen01
An unknown white powder is tested by an antibody based detection system. the test does not indicate the presence of anthrax, yet the sample did contain b. anthracis spores. this is an example of:
a. sampling error
b. a false positive
c. a false negative
d. a neutral error
Answers: 3
Biology, 21.06.2019 19:30
Which statement is true about the cell theory? a) it is well-supported by evidence. b) it is unchangeable and permanent.
Answers: 2
Biology, 22.06.2019 10:10
Which example describes a mutualistic relationship between organisms? young wasps prey on caterpillars. crabs eat the remains of dead fish. tapeworms feed on food in the intestines of cats ants protect a tree on which they feed.
Answers: 2
Biology, 22.06.2019 22:30
Astudent wants to compare the amounts of co2 given off by yeast provided with different amounts of sugar. the student places a balloon over each container to catch the released co2. which observation is a qualitative observation the student can make?
Answers: 2
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