Practice exam 2 study guide Flashcards
What is Rescue Effect
SINK POPULATION - maintained by indivuales leving source pop
What is Mycorrhizae
a symbiotic association between plant roots and fungi
What is Science
Assumes all order in the world and leads to accuracy not look true. This is the observed experiment hypothesis and prediction
Design a study to test the prediction that low-till farming methods will result in higher species richness of soil microorganisms than conventional (“full’) till farming methods.
- What would you vary or compare (independent variable)?
Design a study to test the prediction that low-till farming methods will result in higher species richness of soil microorganisms than conventional (“full’) till farming methods.
- What would you measure/quantify (dependent variable)?
Design a study to test the prediction that low-till farming methods will result in higher species richness of soil microorganisms than conventional (“full’) till farming methods.
-In a single, concise sentence, describe the step(s) you would you take (before the statistical analysis) to ensure that your experiment is rigorous and your results are accurate and reliable.
In a single, clearly-stated sentence based on course content, justify/explain the hypothesis above.
State what type of organism Rhizobium is
bacteria
explain why Rhizobium are very important in the context of agriculture and human nutrition
plant - a highly regulated process called modulation, by which the atmospheric nitrogen is converted into an assimilable plant nutrient
human - promotes non-legume growth and quality
Explain how pesticide resistance evolves in a population of insects from a population of pesticide- susceptible insects. Mention the two important evolutionary processes in your answer.
Which IS an assumption of scientific philosophy?
Different events can have the same predictable cause.
Nitrogen (N) tends to make how many covalent bonds with other atoms?
3
In the carbonate buffer system, which results from adding more H+?
more H+
Based on the course lecture, humans can directly interconvert which molecule with fat?
pyruvate
Plants frequently use glucose molecules to make which structural molecule (that is difficult to digest or break apart)
cytosol
If there is a year where drought greatly reduces the food and water available to sparrows, which logistic- growth term decreased with reduced food?
K
Based on the Nutrition Facts label →,
how many grams of starch are in 1/3 of a medium avocado?
4g total carbohydrate - 3g total sugar - 0 dietary fibers = 1g
Which best describes a squirrel eating an acorn (oak-tree seed)?
interspecific predation
Which area should have the highest species richness?
Mountainous, tropical continent
Which describes the “Greenhouse Effect”
Atmospheric gases trap heat near Earth’s surface.
Which is a crop that is high in nitrogen content?
sweet potatoes
Based on what has been observed in countries around the world and discussed in class, which of the following had the GREATEST EFFECT on reducing the rate of population growth in countries?
Educating girls and women
Which is a staple crop
rice
Coral bleaching occurs because…
there is direct competition between zooxanthellae
and algal periphyton.
Which of the following is NEVER present in a bacterial (prokaryotic) cell?
endoplasmic reticulum
Based on course content, organic farming
usually produces lower yields than conventional farming,
but for a few crops they are equally productive.
According to the content covered in this course, what was George Washington Carver’s significant contribution to science?
He focused agriculture on replenishing soil nitrogen
