Answer:
<em>6</em><em> </em><em>minutes</em>
EXPLANATION:
The brain can survive for up to about six minutes after the heart stops. The reason to learn cardiopulmonary resuscitation (CPR) is that if CPR is started within six minutes of cardiac arrest, the brain may survive the lack of oxygen. After about six minutes without CPR, however, the brain begins to die.
viruses today are thought of as being in a gray area between living and nonliving
Answer:
Hybrid
Explanation:
Two parents belonging to a species and having more than one varying traits are referred to as hybrids. For example –
Let us suppose that two human beings vary in two different traits. One trait is skin color and the other trait is height.
Let the allele for tall height be “T” and the allele for shot height be “t”
Similarly, let the allele for fair color be “F” and the allele for dark color be “f”
Then the genotype of a true-breeding tall and fair person A would be TTFF
And the genotype of a true-breeding short and dark person B would be ttff
Since both the person A and B have two different traits, therefore they can be referred to as dihybrid
Answer:
The correct answer is option C.
Explanation:
The biosynthesis of the pyrimidines are the simple than the biosynthesis of the purines nucleotide as pyrimidines are synthesized rings first and added later to the ribose sugar.
The synthesis of the bases of the purines are synthesizes the ribose sugar is bind first and latter it is added to the purine ring which is ribose - 5- phosphate.
Thus, the correct answer is option C.
