You are exploring a distant planet and find an interesting ecosystem in a lake of liquid methane. Tiny organisms, which you call "quiddles", are able to use the methane to produce carbon sugars. Other organisms, (widdles), consume the quiddles. You discover that an average widdle weighs three times as much as an average quiddle, and that there are more widdles than quiddles per square meter of the lake. How would you describe the ecological pyramids based on these results?
A. An inverted pyramid of energy, and an inverted pyramid of biomass
B. A standard pyramid of numbers, and a standard pyramid of biomass
C. An inverted pyramid of numbers, and an inverted pyramid of biomass
D. A standard pyramid of numbers, and an inverted pyramid of biomass
Answer: C
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Biology
- The osmoregulatory/excretory system of a freshwater flatworm is based on the operation of _____.
- Materials are returned to the blood from the filtrate by which of the following processes?
- Excretory organs known as Malpighian tubules are present in _____.
- The production of antibodies
- The end product of thymine degradation is _______.
- All of the following are directly involved in protein turnover except _______.
- Components of the transulfuration pathway include all of the following except _____.
- Homogentisate is an intermediate in the degradation of __________.
- Amino acids whose degradation yields a-ketoglutarate include all of the following except _________.
- Amino acids whose degradation yields succinyl-CoA includes all of the following except ________.
- Which of the following reactions require SAM?
- One type of wax we discussed is used to protect your car. Name that wax
- Amino acids whose degradation yields acetyl-CoA include all of the following except ________.
- All of the following are referred to collectively as the branched chain amino acids except _________.
- The fixation of nitrogen requires _______.
- Asparagine is formed from aspartic acid and _________ .
- The oxidation state of the methenyl group (-CH=) is comparable to that of ____.
- All of the following are directly involved in the synthesis of deoxyribonucleic acid except _______.
- One-carbon carriers in metabolism include
- Extra Question) Which of the following is an a-keto acid/a-amino acid pair used in transamination?
- The conversion of phosphatidylethanolamine to phosphatidylcholine requires ______
- Chorismate is a precursor in the synthesis of all of the following except _______.
- SAM is a methyl donor in the synthesis of ______.
- The tranport of GSH out of cells serves all of the following functions except ______.
- All of the following are purine bases except _____.