Nurse cells surround Drosophila oocytes and produce maternal mRNA and proteins that are deposited into the egg. Which of the following products would be produced by nurse cells?
A) bicoid mRNA
B) Antp mRNA
C) Caudal protein
D) Hedgehog protein
A) bicoid mRNA
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The process by which a small amount of the energy in a
glucose molecule is released as it is converted into two small organic acid molecules is a. photolysis. b. glycolysis. c. oxidative phosphorylation. d. substrate-level phosphorylation. e. the Krebs cycle.
How do carnivores and herbivores differ?
A. Carnivores can be opportunistic but herbivores cannot. B. Herbivores can be opportunistic but carnivores cannot. C. Carnivores and herbivores require different enzymes to digest their food. D. Carnivores must eat more frequently than herbivores. E. Herbivores remain herbivores at all stages of development, while carnivores are often herbivores in their larval stages.
The metabolic process ____________________ converts pyruvate to lactic acid. Fill in the blank(s) with the appropriate word(s)
Based on current knowledge about the conditions of early Earth, the first organisms were most likely
A) anaerobic eukaryotes. B) photosynthetic eukaryotes. C) anaerobic prokaryotes. D) photosynthetic prokaryotes. E) multicellular eukaryotes.