The Answer is C Gas exchange take place in our lungs
Carbon (C) is an element
Carbon Dioxide (CO2) is a compound
Hydrogen (H) is an element
Sodium Chloride (NaCl) is a compound
A good way to tell whether something is a compound or an element, is that in a compound there is a mixture of different elements. Like in Carbon Dioxide, the symbol is CO2. This shows the carbon (C) and oxygen (O) together. I hope i worded that well enough and this helps :)
Answer:
The conditions under which a particular enzyme is most active are called the optimum conditions
Explanation:
When an enzyme is most active the rate of the biological reaction it catalyses is highest. The bacterium Thermus aquaticus lives in hot springs. Its enzymes have an optimum temperature of around 70 oC.
Answer:
The best evidence for the three domain system is
Sensitivity to Antibiotics
Explanation:
The three domains of life includes :
Archaea - oldest known domain, ancient forms of bacteria.
Bacteria - all other bacteria that are not included in the Archaea domain.
Eukarya - all the organisms that are eukaryotic or contain membrane-bound organelles and nuclei.
Types of evidences for the three domain system are:
1) differences in the sequences of nucleotides in the cell's robosomal RNAs (rRNA)
2) the cells's membrane lipid structure.
3) its sensitivity to antibiotics.
The offspring inherited the dominant traits from the parent which made it automatically fully dominant. In DNA, dominant alleles mixed with recessive alleles will make 100% dominant offspring. The offspring inherited those chromosomes, which made the white trait not show up.
