Answer AND Explanation:
<u>FACTORS THAT CAUSE GENETIC VARIATIONS</u>
- Crossing over. At the chiasmata during prophase I of meiosis, breakage may occur and exchange of genetic information may take place. New gene combinations which result in variations.
- Independent assortment. The arrangement of homologous chromosomes at the equator of the spindle during metaphase of the first meiotic division is random. These homologous chromosomes segregate into different daughter cells which contain different genetic combinations which brings about variation
- Fertilisation permits parental genes to be brought together in different combinations. This is the cause of variations in members of the same family.
- Mutation is the spontaneous change in the genetic makeup of an organism. These changes may be inherited by the offspring therefore beginning variation.
Answer:
The correct answer is - CNN.
Explanation:
Protein modification or folding takes place in the endoplasmic reticulum. The Endoplasmic Reticulum modifies the amino acids according to their signal sequences and tail. The following case can help in indicating the C-terminus (C) or the N-terminus (N) of each of the following proteins-
A) the C-terminus would be placed in the cytosol and the N-terminus in the endoplasmic reticulum lumen after cleaving the N-terminal signal sequence.
B) The N -terminal is the positive end of the chain and as per the rule of positive inside it allows N terminal in the cytosol
( C ) Tail-anchored proteins always have their N-terminal bulk in the cytosol.
Thus, CNN would be the correct answer from the explanation given above.
Activation energy - is the minimum quantity of energy that the reacting species must possess in order to undergo a specified reaction.
Answer:
Intially the glucose concentration is levelled and then the liquid level in side A will rise.
Explanation:
- Initially the liquid ob both sides are in isotonic condition.
- The membrane is permeable to glucose so glucose will diffuse from higher concentration (2 M) to lower concentration (1 M) until the concentration become equal (1.5 M) on both sides.
- Know, the Side A have 2 M sucrose and 1.5 M glucose and side B have 1 M glucose and 1 M sucrose.
- The side A will become hypertonic and side B will become hypotonic and water will start moving from side B to side A.
