Answer:
A. DNA gives instructions on how to make keratin, the protein that makes up human hair and skin.
B. DNA contains information about the eye and fur color that is passed on from parents to kittens.
D. DNA helps create substances that fight the bacteria that enter the body.
Explanation:
Deoxyribonucleic (DNA) is the basic unit of living organisms which contains genetic information about living organisms. It also contains information about different proteins that make our body. DNA is also responsible for the production of antibodies which helps in the fighting against pathogens such as bacteria and viruses etc. In short, DNA is responsible for every thing that is present in the body of organisms.
• Matthias Schleiden observed that all plants were made of cells; Theodor Schwann observed that all animals were also made of cells; and Rudolf Virchow observed that cells only come from other cells.
• Prokaryotic cells- don’t contain a nucleus or any other membrane-bound organelle.
Eukaryotic cells- contain membrane-bound organelles, including a nucleus.
• Phospholipids make up the basic structure of a cell membrane and are arranged in a double layer called the lipid bilayer.
• Active Transport- moves ions from low concentration to high, using metabolic energy in the form of ATP.
Passive Transport - moves ions from high concentration to low, using no metabolic energy.
Answer:
eustachian tube i think lol
Explanation:
Adenine and thymine are complementary bases, as well as cytosine and guanine. Complementary bases bind always with each other, and never with another base. Cytosine and guanine are joined together by 3 hydrogen bonds and thymine with adenine with 2 hydrogen bonds
<span>Blood flow to the skin increases when the
temperature of the body rises. When you are too hot, the blood vessels in your
skin expand (dilate) to carry the excess heat to your skin's surface. It helps
cool your body. </span>
