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:
The correct answer is - Past history of mania and current attempt killing himself to support Bipolar I.
Explanation:
Bipolar type I have various types of characteristics symptoms. The Diagnosis is provided to an individual who has history of a manic episode or more manic episodes. May have depression. Psychotic or catatonic features may also be noted. Killing oneself behavior or thoughts might be possible.
Thus, the correct answer would be - Past history of mania and current attempt killing himself to support Bipolar I.
Thank youuuuu!! Also sorry to hear you’re quitting oof
Answer:
About one-quarter: a serve infection causes you to become weak, and the extra protiens are needed to repair damage done by the infection and to help fight it off.
