Answer:
A. coronary disease
Explanation:
Cancer that forms in tissues of the lung, usually in the cells lining air passages.
I think it’s this but i might be wrong i’m not 100% sure
pharmacological
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.
The correct answer is C.
Cardiorespiratory fitness is a medical term used to describe the capacity of an athlete's body to transfer the necessary oxygen to the muscles and the capacity of the muscles to absorb this oxygen. There are various ways to assess the cardiorespiratory fitness of an athlete, such as the VO2max testing, the Bruce protocol treadmill test, and the beep or bleep test. The more appropriate way to assess the cardiorespiratory fitness is to use a combination of tests since this will give a complete image of the body's fitness level.
