What is a substance required by all organisms for survival but something that they cannot make on their own?
a. Nutrient
b. Sunlight
c. Energy
d. Carbohydrate
e. Oxygen
a
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Collective estimates of the physiological reactions occurring in the entire microbial community are known as ________ measurements
A) in vitro B) in situ C) activity D) metagenomics
In contrast to regulators, animals that are conformers:
A. are able to alter their immediate external surroundings in order to maintain homeostasis. B. require large stores of ATP to maintain homeostasis. C. have a feature of their internal body composition that matches their external surroundings. D. cannot live in extremely cold environments, such as the Antarctic Ocean. E. cannot adapt to the external environment.
Which genes are expressed in Drosophila after pattern formation along the A/P axis has been successfully established?
A. homeotic genes B. gap genes C. segment polarity genes D. bicoid genes E. totipotent genes
To test the prediction that increased phosphorous levels in lakes lead to increased minnow populations, scientists survey 20 lakes across Minnesota, measuring phosphorous content and quantifying minnow abundances. This is an example of what type of scientific approach?
What will be an ideal response?