Answer:
Digestion, excretion and transportation of substances.
Explanation:
Chemical reactions such as breakdown of food, cleaning of blood and absorption of nutrients and digestion are the activities that our body done with the use of energy. Digestion of food needs energy for the breakdown of food with the help of several enzymes. Transportation of waste materials and other substances also needs energy. Our cells absorb nutrients with the help of energy molecules through active transport.
A chromosome is a strand of DNA that is encoded with genes. In most cells, humans have 22 pairs of these chromosomes plus the two sex chromosomes (XX in females and XY in males) for a total of 46.
Answer: ask Yahoo Answers
Explanation:
<span>It's called hybrid protection. Heterozygous organisms show the dominant trait but protect the recessive one. It is difficult to determine if an organisms is homozygous or heterozygous dominant. So when 2 heterozygous individuals mate the possibility of the recessive phenotype becomes real.</span>
Answer:
first blank is spore, second is plant.
Explanation:
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