A because a physical change , changes the appearance. the multiple choice question is A.
The flying insects classically utilize high numbers of mitochondria in flight muscles. In addition, mitochondria are organelles within eukaryotic cells that yield adenosine triphosphate in which the foremost energy molecule used by the cell. For this reason, the mitochondrion is sometimes denoted to as the powerhouse of the cell. The mitochondria are originating in all eukaryotes which are all living things that are not bacteria or archaea. It is thought that mitochondria ascended from once free-living bacteria that were combined into cells.
<span>D a rigid cell wall which provides structure and support
</span>
Answer:
The entry of food into the stomach.
Explanation:
Gastric secretion is triggered by the act of eating which is called as reflex phase and the entry of food into the stomach called a gastric phase. The entry of the food particles into the small intestine also helps to control the secretion of gastric called an intestinal phase.
The secreted fluid in the small intestine contains some ions, acids, etc such as pepsinogen, intrinsic factor, bicarbonate, hydrochloric acid, and mucus. The reflex phase or cephalic phase helps to stimulate parasympathetic neurons that release acetylcholine chemical, then it produces the higher secretion of gastric juice.
<span>A) Leg of a horse and the leg of a dog.
The rest of the choices are examples of convergent evolution because they are similar in structures that evolved in separate places in the animal kingdom.
>Bats are mammals and birds are not, yet they both evolved a similar appendage</span><span>
Choices to this question are:
A)
the leg of a horse and the leg of a dog
B)
the wing of a bat and the wing of a bird
C)
the fin of a dolphin and the fin of a shark
D)
the beak of a bird and the beak of a turtle</span>