Once absorbed, amino acids travel from the small intestine via the portal vein to the liver.
Answer:
D. Yes, two hydrogen bonds could form between thymine and cytosine.
Explanation:
A hydrogen bond (often informally abbreviated H -bond) is a primarily electrostatic force of attraction between a hydrogen (H) atom which is covalently bound to a more electronegative atom or group, particularly the second-row elements nitrogen (N), oxygen (O), or fluorine (F)—the hydrogen bond donor (Dn)—and another electronegative atom bearing a lone pair of electrons—the hydrogen bond acceptor (Ac).
The formation of stable hydrogen bonds depends on the distance between two strands, the size of the bases and geometry of each base. Stable pairings occur between guanine and cytosine and between adenine and thymine (or adenine and uracil in RNA).
One hydrogen bond could form between the C4 carbonyl group on thymine (a hydrogen bond acceptor) and the C4 amino group on cytosine (a hydrogen bond donor). Another hydrogen bond could form between N3 of thymine (a hydrogen bond donor) and the N3 of cytosine (a hydrogen bond acceptor). Note that the C2 carbonyl groups found on both bases are both hydrogen bond acceptors and therefore a hydrogen bond cannot be formed between them.
Answer: Here are some things you can do!
Get 8 hours of sleep.
Eat nutritious meals.
Drink 8 cups of water daily.
Engage in 60 minutes of physical activity each day.
Maintain a healthy body weight.
Bathe, brush and floss teeth daily.
Regular doctor and dentist visits.
<span> stimulants such as </span>dextroamphetamine act in the brain . Stimulants<span> enhance the </span>effects of chemicals in the brain
C. If kids need a lot of fat, they'd all be obese. If kids eat NO fat, then they'd gain little to no weight at all.
