Positive control is Ginger root (should indicate the presence of amylase)
Negative control is Cellulose (should not contain amylase)
Here the presence of amylase is tested by testing the presence of starch using an IKI solution. Saliva is included in this experiment because it contains the enzyme amylase.
Matthias Jakob Schleiden is the German biologist that said all plants were made of cells
There was two of the same question, but here is the answer again with a little more depth.
D - spine alignment and foot size.
It was only the late Australopiths that had an S-shaped spine. This allowed for them to be bipedal, that is, the ability to walk on two legs as we do. This is because the S-shaped spine allowed them to balance when they were standing. The late Australopiths also have shorter and less flexible toes. These smaller, but sturdier feet made pushing off the ground much easier - aiding in their bipedalism.
The amniotic egg allows<span> reptiles, birds and mammals to lay eggs on </span>land<span> ... The allantois layer </span>allows <span>gases and waste to escape from the inner </span>part<span> of the egg.</span>
The right option is; C)Lower her sodium intake
Heart diseases are various conditions that affect the heart. Heart diseases include heart rhythm problems, blood vessel diseases, and heart defects. Sodium is an essential nutrient for the body and it plays important roles in regulating fluid balance, and nerve impulse transmission. Higher levels of sodium in the body are normally associated with heart diseases such as hypertension. The normal blood sodium range is between 135 and 145 mEq/L.
