Answer: Acquired Active Immune Response System
Explanation:
Vaccines are substances that are prepared from the causative agent of a disease or its synthetic substitute, which is treated to mimic the actual antigen of the disease. This artificial antigen of the disease, thereby stimulates the production of antibodies that helps in fighting the disease and also provides immunity against the disease in the body.
A primary response system is stimulated in the presence of the vaccine, which acts as an antigen. In this way, an artificially acquired active immune response system is created naturally using vaccines.
Answer:
The options
a. 3:4
b. 3:1
c. 4:3
d. 4:9
e. 1:3
The CORRECT ANSWER IS e.
e. 1:3
Explanation:
Compound A (green) , GENE A is transformed to Compound B (blue)
Compound B (blue) , GENE B is transformed to Compound C (red)
After gene A as transformed the compund A to compound B, gene B can can transform the compound B to C. Therefore, once gene A is forming blue colour from green, gene B as the capability to form red colour from the blue one.
Lets cross AaBb X AaBb (the product of the cross is shown in the attached image. )
we will have the following genotypes:
AABB-1
AABb- 2
AaBB-2
AaBb-4
We obtain a functional copy of A and B gene from the cross. Thus, the transformation of colour will proceed from green to red and they will form red colour, giving us 9 red colour.
AA bb -1
Aa bb -2
The functional B gene is absent in these organism while the funtional A gene can be seen, thus only blue colour will be formed or 3 individual will give the blue colour.
aa BB -1
aa Bb -2
aa bb-1
these set of individual will not give or form any colour as they do not possess the functional A gene which is a requirement for starting the cascade of transforming the compounds.
Therefore, the blue to red offspring will be
3:9 or 1:3
The CORRECT ANSWER is e.
Answer: Ginkgo
Explanation:
There are 4 types of gymnosperms that produce fleshy fruits around their seeds which are usually considered as cones. These are Ginkgo, conifers, gnetophytes, and cycads. These plants have been evolved for fruit production as gymnosperms are known for their naked ovules and their seeds are stored in rough woody structure that is called as cone. There are separate males and female cones are present in gymnosperms.
Among the options given Ginkgo is the correct option it produces cones that look like berries. This advantageous evolution and helps in transfer of seeds through animals as they consume fruits or berries and disperse seeds in their feces.
Answer:
Covalent bond
Explanation:
covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding
Basal cell carcinoma. It’s the most common but least dangerous from of skin cancer. Hope this helps!
