Small organisms that feed on dead or dying organic material are known as:
1.Decomposers
2.Detritivores
3.Parasites
4.Scavengers
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The Krebs cycle occurs in the mitochondria. There are nine biochemical reactions involved in the Krebs cycle, and they are highly ordered. Select the correct order. (Note: These are abbreviated and do not show NAD, ADP, ATP, or FAD.)
A. acetyl-CoA joins the Kreb cycle and unites with oxaloacetate ®forming citrate ®which forms beta-ketoglutarate ® which forms succinyl-CoA ® which forms succinate ® which forms fumarate ® which forms malate ® which forms oxaloacetate B. acetyl-CoA joins the Kreb cycle and unites with oxaloacetate ®forming citrate ®which forms alpha-ketoglutarate ® which forms succinyl-CoA ® which forms succinate ® which forms malate ® which forms fumarate ® which forms oxaloacetate C. acetyl-CoA joins the Kreb cycle and unites with oxaloacetate ®which forms alpha-ketoglutarate ® forming citrate ® which forms succinyl-CoA ® which forms succinate ® which forms fumarate ® which forms malate ® which forms oxaloacetate D. acetyl-CoA joins the Kreb cycle and unites with oxaloacetate ®forming citrate ®which forms alpha-ketoglutarate ® which forms succinyl-CoA ® which forms succinate ® which forms fumarate ® which forms malate ® which forms oxaloacetate
Why aren't insect tracheae associated with capillary beds?
A. Insect capillaries are found only around the gut. B. Insects have an open circulatory system. C. Insects have external gills associated with hemolymph vessels. D. Insects use an air sac respiratory system.
Answer the following statements true (T) or false (F)
1. In eukaryotic cells the electron transport system occurs in the mitochondria. 2. In prokaryotic cells the electron transport system occurs in the mitochondria. 3. Chemiosmotic phosphorylation occurs when protons pass through ATP synthase and combine with oxygen and electrons to make water. 4. Substrate-level phosphorylation occurs when protons pass through ATP synthase and combine with oxygen and electrons to make water. 5. Anaerobic respiration uses oxygen as its final electron acceptor at the end of the electron transport chain.
Cleft palate is a hereditary condition in which the maxillae do not completely fuse before birth. Which of the following activities likely will be more difficult with cleft palate?
A) breathing B) looking over the shoulder C) eating and speaking D) salivating