Answer:
A virus attaches to a specific receptor site on the host cell membrane through attachment proteins in the capsid or via glycoproteins embedded in the viral envelope. The specificity of this interaction determines the host (and the cells within the host) that can be infected by a particular virus.
Explanation:
D it’s the brain of the cell
It is 6,because
The haploid number is half of the diploid number.
So if the organism's diploid number is 12, 6 would be its haploid number.
Hope that I could help you
You should gain during your pregnancy. If you're underweight, try to gain 28-40 pounds. Normal weight? Shoot for 25-35 pounds. Overweight? Gain 15-25 If you're obese, try to put on 11-20 pounds. Expecting twins or multiples? Your goal weight goes up. Gain 50-62 pounds if you're underweight. 37-54 if you started at a normal weight. 31-50 if you're overweight. And 25-42 if you're obese. When you're pregnant with one baby, get about 300 extra calories per day starting in your 2nd trimester. You'll need more than that if you're having twins or multiples, so check with your doctor. Put on the extra pounds slowly and steadily.
Yes it is quantitative is numerical data if you needed it
