Answer:
Those gases can only cross cell membranes when they are dissolved in water or an aqueous solution, thus respiratory surfaces must be moist.
Answer:
Grape jelly because it's mostly simple sugars.
Explanation:
Carbohydrates and proteins obtain around 4 calories per gram each while fats obtain 9 calories per gram. A simple sugar consists of monosaccharide that can directly enter the cellular respiration to obtain energy. Complex carbohydrates are digested into simpler sugars. Digestion of complex carbohydrates obtains more of simple sugars to serve as an energy source.
Among the given options, peanut butter, whole milk, and bread have fats that obtain around double the energy per gram as compared to carbohydrates. Bread also contains complex carbohydrates that release many simple sugars upon digestion. Therefore, grape jelly with simple sugars would give the fewest calories per gram.
Dna in eukaryotic organisms are found in the nucleus.
Plant cells have a cell wall while an animal cell doesn't. Also plant cells have a much larger vacuole than animal cells. There are other differences too but these are the one I could think up on short notice. Hope this helps!
Answer: 138
Explanation: Humans have 23 pairs of homologous chromosomes, times 6 is 138