Answer:
Non-covalent interactions.
Explanation:
DNA is present as genetic material in all the living organism except some viruses. DNA also perform important other functions - code for proteins, used as a source of energy.
The DA binds with protein to perform their functions. These proteins may acts as activator for DNA. The proteins binds in the non covalent interactions ( ionic bonding, hydrogen bonding, vanderwalls and hydrophobic interaction) so that proteins may easily detach from the proteins. These interactions helps in the attachment and easily detachment of proteins from DNA.
Thus, the correct answer is non-covalent interaction.
Answer:
The correct answer is - 1. true, 2. true, 3. false, and 4. true.
Explanation:
1. Rod cells are the photoreceptors present in the retina that are hyperpolarized not depolarized in dark due to sodium ions efflux.
2. Depolarisation of the bipolar cell of the retina by glutamate release by rods and cones.
3. The adaption according to the light is known as a light adaptation which takes place due to a large part of photochemical in both rods and cones which is reduced to retinal and opsins.
4. when the light reaction takes place retinal converted to opsin
Like DNA, RNA contains four nitrogenous bases. Three of them are the same as those found in DNA. The one that is different is called uracil. The five-carbon sugar in RNA is called ribose.
Uracil is a crystalline organic molecule, and a component of the ribonucleic acid (RNA). The RNA molecule is made up of a sequence of nucleotides, which individually contains a five-carbon sugar (ribose), a nitrogenous base, and a phosphate group. Uracil is one of the four nitrogenous bases present in the nucleic acid of RNA. The others are adenine, cytosine, and guanine, and are represented by the letters; A, G, C and U. In DNA (deoxyribonucleic acid), the uracil nucleobase is substituted by thymine.
<span>Pneumocystic pneumonia. This is a fungal infection that is very common in people with HIV. Before medication was available, about 3/4 of people with HIV came down with this infection.</span>
Answer:
D. 0.60
Explanation:
If the population is in Hardy-Weinberg equilibrium, the genotypic frequencies are:
- freq AA = p²
- freq Aa = 2pq
- freq aa = q²
<em>p</em> is the frequency of the Rh positive allele (A) and <em>q</em> is the frequency of the Rh-negative allele (a).
If 84% of the population is Rh-positive, then 16% is Rh-negative and has the genotype <em>aa</em>. Therefore:
q² = 0.16
q = √0.16
q=0.4
And because p+q=1,
p = 1 - 0.4
p = 0.6
The frequency of the Rh-positive allele is 0.6
