Perhaps the study of chemical reactions is not a central theme of biology, but of chemistry.
The entry of the sperm nucleus is facilitated by C) acrosome reaction. The acrosome is the head-like structure at the front of the sperm cell. This contains digestive enzymes that break down the outer membrane of the egg cell, allowing the nucleus of the sperm cell to enter and fuse with the nucleus of the egg cell.
Answer:
The answer is 22.5ml
Explanation:
The chamber volume is 500 ml.
So amount of oxygen in chamber at the beginning
=
=105 ml
After the end of hour ; let x ml of oxygen was consumed.
Amount of oxygen at the end of 1 hour =18 %
So,
=0.18
Solving we get ;
105-x= 90-0.18 x
0.72 x =15
x=20.83 ml
So amount of oxygen consumed in the hour =20.83 ml
So answer is A.
Answer;
-Heat capacity
-Water can absorb more heat than land, but water does not increase in temperature as fast because it has a high heat capacity.
Explanation;
-Heat capacity is the capability of water to absorb heat without undergoing an increase in temperature. For water to increase in temperature, its molecules must be made to move faster within the water; which requires breaking hydrogen bonds that absorbs heat.