Answer:
Strain Presence of Lactose Absence of Lactose
(+) (-)
For the wild type case, the lacZ gene product will be expressed in the presence of lactose only.
(-) (-)
Because of the super repressor, transcription will not take place regardless of the presence of lactose.
(+) (+)
The constitutive operator will allow for transcription to occur, whether or not lactose is present.
(+) (+)
The repressor is non-functional, transcription will occur with or without presence of lactose.
(+) (+)
The super repressor will not be able to stop transcription as it cannot bind to the constitutive operator.
(-) (-)
The promoter is non-functional, transcription will not start and hence, not gene product formed.
(-) (with glucose present) (-)
E. coli will not metabolize lactose in the present of glucose, since glucose is the preferred source of nutrition.
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Answer:
Nonliving characteristics include the fact that they are not cells, have no cytoplasm or cellular organelles, and carry out no metabolism on their own and therefore must replicate using the host cell's metabolic machinery. Viruses can infect animals, plants, and even other microorganisms.
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The core of earth is the answer
Answer:
The Answer is Letter E.
Explanation:
<em>The way membranes of a eukaryotic cell vary is certain proteins are unique to each membrane. </em>
The eukaryotic cells also contain other membrane-bound organelles such as mitochondria and the Golgi apparatus, and in addition, some cells of plants and algae contain chloroplasts. Unlike unicellular archaea and bacteria, eukaryotes may also be multicellular and include organisms consisting of many cell types forming different kinds of tissue.
The diseases that appear to increase in frequency as countries become more industrialized and people live longer can include Alzheimer's disease, arthritis, atherosclerosis, asthma, cancer, chronic liver disease or cirrhosis, chronic obstructive pulmonary disease, type 2 diabetes, heart disease, metabolic syndrome