Answer:
The correct answer is option a. "Transcription would not occur at high levels in either the presence or absence of arabinose".
Explanation:
The ara operon, also known as the L-arabinose operon, is a series of related genes that are transcribed within the same transcript and are all related to the metabolism of L-arabinose. Among the proteins translated from the ara operon, the AraC protein that binds to RNA Polymerase is the one that recognizes L-arabinose and enhances ara operon transcription in its presence. Therefore, if a mutation removes the gene that encodes for the AraC protein, transcription would not occur at high levels in either the presence or absence of arabinose.
Answer:
During transformation and conjugation
Explanation:
Transformation is a process whereby genetic material from another species is introduced into the bacteria through a series of biological steps and manipulation. Conjugation is when the exchange of the genetic material is between bacterial species through a conjugation tube.
Answer: body systems that can directly impact fluid balance includes:
b)urinary system
c)respiratory system
f)sweat glands.
The correct option is B, C and F.
Explanation:
Homeostasis is the mechanism by which the body maintains a steady ( constant) internal physical and chemical conditions. The following variables needs to be kept in equilibrium for optimal functioning of the body system. They includes: the body temperature, fluid balance, blood sugar levels. These variables are in turn controlled by one or more regulatory systems which includes;
- urinary system:when blood volume gets too low or blood electrolytes get too concentrated, the kidneys can retain water thereby decreasing urine output. When blood volume or pressure is too high, the kidneys can excrete more water thereby increasing urine output.
- sweat glands: this regulates both fluid and temperature.
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in b/w A and T there will be two Hydrkgen bknds where as in b/w G and C there will be three hydrogen bonds
Answer:
Omnivore - An animal that eats both plants and animals.
Scavenger - An animal that feeds on dead animals/plants.
Herbivore - An animal that only feeds off of plants.