The square denotes male. One parent is recessive, so X must have at least one recessive allele. B is the right answer.
Epithelial cells also carry out active transport.
Hope this helps.
~Jurgen
Answer:
The amylase had the higher absorbance with a pH of 7.
Explanation:
Enzyme activity values are given by the spectrophotometric method. The constant temperature is maintained in order to evaluate the pH independent effect. The absorbance is then measured at various pHs and the one that corresponds to the greatest absorbance is the pH at which the enzyme has its peak activity. So pH 7 is the optimal pH condition.
Answer:
A DNA molecule is in the shape of a double helix twist, so it will look like a ladder.
Explanation:
The main component of the cell membrane is a phospholipid bi-layer or sandwich. The heads (the phospho part) are polar while the tails (the lipid part) are non-polar.