I my god they give you so much homework I feel sorry for you
Answer:
The suitable option will be - A.
A. lactose levels are high and glucose levels are low
Explanation:
It is a operon that is regulated by a set of genes and is regulated altogether and is transcribed into a single RNA in the presence of lactose.
- It is mainly found in E.coli. Lac operon is mainly used for lactose metabolism. There are 3 genes in this system - lacZ, lacY, and lacA.
- LacZ codes for β-galactosidase which cleaves lactose into glucose and galactose. LacY codes for Beta-galactoside permease, which helps in the entry of lactose in the cell. LacA codes for Galactoside acetyltransferase.
So sodium and potassium move by active transport using a pump
Glucose moves by a method of passive transport, facilitated diffusion. Ions moving with facilitated diffusion use channels, but a molecule like glucose would use a carrier protein.
The correct answer is option B, that is, all living organisms are composed of one or more cells, which came from pre-existing cells.
A scientific theory refers to a well-substantiated illustration of some characteristic of the natural world, on the basis of a number of facts, which have been repeatedly confirmed via the experiment and observation. Such fact-supported theories are not hypotheses, however, are reliable explanations of the real world.
During the late 1830s, the zoologist Schwann and the botanist Schleiden were examining tissues and postulated the unified cell theory. According to the unified cell theory, all the living things comprises of one or more cells, the cell is the fundamental unit of life, and the new cells originate from the pre-existing cells.
Answer:
Mutation
Explanation:
Mutation change the genetic makeup of a population of species over time.
An example is the immunity of plasmodium parasite to chloroquine without time.
