Answer:
The correct answer is break down of pyruvate 
Explanation:
Krebs cycle is one of the most significant process of aerobic respiration.During krebs cycle pyruvate is broken down to acetyl CoA which interacts with oxaloacetate to form the first metabolite of Krebs cycle known as citrate which contain 3 -COOH group That"s why krebs cycle is also termed as Tricarboxylic acid cycle.
 
        
             
        
        
        
Hemoglobin serves as a chemical messenger
        
             
        
        
        
Answer: The number of chromosomes in the wolf's body cells is 78 while the gametes has 39
Explanation:
Since each body cell under only mitosis to yield two daughter cells with equal number of chromosome as the parent cell (i.e diploid number, 2n) while sex cells undergo meiosis to yield four daughter cells with half the number of chromosomes as the parent cell (i.e haploid number, n); thus, the wolf's body cells has 78 chromosomes while the gametes has 39 chromosomes.
 
        
             
        
        
        
Camelids are members of the biological family Camelidae, the only currently living family in the suborder Tylopoda. The 7 extant members of this group are: dromedary camels, Bactrian camels, wild Bactrian camels, llamas, alpacas, vicuñas, and guanacos. Camelids are even-toed ungulates classified in the order Cetartiodactyla, along with species like whales, pigs, deer, cattle, and antelopes.
Kingdom:AnimaliaPhylum:ChordataClass:MammaliaOrder:ArtiodactylaSuborder:TylopodaSuperfamily:CameloideaFamily:Camelidae
Gray, 1821Type genusCamelus
Tribes
Camelini Gray, 1821
Lamini Webb, 1965
Current range of camelids, all species