The Red Blood Corpuscles in the blood take up the oxygen to supply it to different cells in the body. They do not have a nucleus to carry much oxygen and to go through the thinnest capillaries and narrow spaces. They do not have mitochondria so that they do not use up the oxygen or energy for themselves.
Answer:
AUA
Explanation:
Thiamine pairs with Adenine. However, in mRNA, the Thiamine base does not exist. It is replaced by Uracil. Therefore, instead of the A in the DNA strand pairing with a T, it pairs with a U on the mRNA.
Answer:
I'm confident that the answer would be
D - both A and B
;)
Explanation:
big brain
Most living things need energy from the Sun. Green leaves on plants use sunlight, air, water, and nutrients to make food. Plants use the food to live and grow. Animals use energy to move and to eat, then letting energy out. It's a natural cycle.