Which of the following would be at the highest trophic level? 

A. a lion
B. a grasshopper
C. a mushroom
D. a grass plant


A. a lion

Biology & Microbiology

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Which of the following organs are likely to be

affected by a defective CFTR protein?

a. lungs b. intestines c. heart d. lungs and intestines e. heart and intestines

Biology & Microbiology

Which of the following is the correct way to write the scientific name of the wolf?

A) canis Lupus B) Canis Lupus C) Canis lupus D) Canis lupus E) canis lupus

Biology & Microbiology

What information is critical to the success of polymerase chain reaction (PCR) itself?

A) The DNA sequence of the ends of the DNA to be amplified must be known. B) The complete DNA sequence of the DNA to be amplified must be known. C) The sequence of restriction-enzyme recognition sites in the DNA to be amplified must be known. D) The sequence of restriction-enzyme recognition sites in the DNA to be amplified and in the plasmid where the amplified DNA fragment will be cloned must be known.

Biology & Microbiology

Match the following items with the correct phrases.

_______1. Membrane-bound organelles where photosynthesis occurs. _______2. The sites of protein synthesis in procaryotic cells. _______3. Considered a “packaging plant,” where proteins are packaged into membrane-bound vesicles. _______4. Membrane-bound organelles where energy is produced by the Krebs cycle and electron transport chain. _______5. Found in procaryotic cells as well as eucaryotic cells. a. plastids b. mitochondria c. ribosomes d. endoplasmic reticulum e. golgi complex

Biology & Microbiology