No it isnt a rational nu7mber.
Answer:
a) when cells are small the movement of food and waste can be efficiently handled by the cell membrane
Explanation:
Cells need to get their nutrients and waste in and out of their cell membrane every quickly. Cells are hard workers anyway! The other options also don't make much sense. The cell shape doesn't mean much to their function, and size doesn't impact shape. The cell's internal parts (mitochondria, vacuole, etc) don't support the cell membrane, they have their own functions to focus on. Cells don't work together in tissue but they can interact with each other when needed.
Answer:
There are techniques to test that if an individual is practicing proper aseptic techniques to ensuring the growth of the pure bacterial colonies. The one of the experimental way to test is as follows:
Leave a Petri plate poured with media at lab, leave it for some time in open. Then incubation of the petri plate for 24 hours.
If bacteria colonies found on the plate, then the aseptic techniques that is following are not proper.
(going from top to bottom)
snake, mouse, seed
bottom to top
seed, mouse, snake
Answer:
The genotype of the randomly chosen F1 parent plant is "Tt"
Explanation:
Let "T" represents the allele for tall height characteristic of plant and "t" represents the allele for short height characteristic of plant.
Given -
Two phenotypically tall heterozygous pea plants are crossed to one another.
Genotype of tall heterozygous pea plants would be "Tt"
F1 Generation -
Tt * Tt
TT, Tt, Tt, tt
Now, it is given that a phenotypically tall F1 progeny plant is randomly chosen and mated to a phenotypically dwarf pea plant.
Genotype of phenotypically dwarf pea plant would be "tt"
Also, it is given that some of the F2 offspring from this mating are phenotypically dwarf this implies that progeny selected from F1 generation must have an allele for short height characteristics i.e "t"
Therefore,
in F2 generation cross will take between tt * Tt
thereby producing Tt, Tt, tt, tt
Therefore, the genotype of the randomly chosen F1 parent plant is "Tt"
