If we inserted an anabolic Tryptophan (trp) operon with GFP for amino acid synthesis instead, what would happen if we grew the bacteria in a agar containing excess tryptophan

Answers

Answer 1

Answer:

Since there is presence of excess tryptophan, the trp operon will be switched off, since the bacterial need not to synthesize.

Explanation:

Understand the following.

The trp operon is a group of gene that encode biosynthetic enzymes for the amino acid tryptophan.

The transcription gene in the operon is switched off when the tryptophan is in excess but is switched on by the bacterium when the tryptophan is low, so that more tryptophan can be produced.

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Illustrate the resting potential, and explain how it helps transmit signals in neurons.

Answers

A neuron is a specialized cell whose function is to transmit nerve impulse
A resting potential is defined as the potential when neurons are not excited and they are at rest and at this phase the neurons don't transmit or receive the nerve impulse and it is -70mv and this potential is due to presence of the
negative charges inside the membrane
There is also action potential that generate the nerve impulse
hope it helps

What role do autotrophs (producers) play in ecosystems?

Answers

autotrouphs are the supporters of the ecosystem like that person that helps everyone else

Autotrophs are the support of the ecosystems

Baby olivia is 2 months old and sleeps 20 hours per day. about _____ in 20 infants sleep more than 19 hours each day.

Answers

Answer:

Out of 7 ,10 ,5 and 1 answer is 1

Explanation:

Baby olivia is 2 months old and sleeps 20 hours per day. about 1 in 20 infants sleep more than 19 hours each day.

Proteins are composed of which of these subunits? Select one: a. amino acids b. glucose molecules c. fatty acids d. nucleotides

Answers

Subunits of Major Macromolecule Groups:
Lipid - Fatty Acid
Protein - Amino Acid
Nucleic Acid - Nucleotide
Carbohydrate - Polysaccharides (including glucose)

Proteins are composed of amino acids. Glucose molecules make up sugars and starches. Fatty acids make up, big surprise, fat molecules (unsaturated having double bonds between carbon atoms). Nucleotides make up DNA and RNA.

Layers of epithelial tissue that serve as barriers to pathogens is called

Answers

Answer:

The correct answer is: Mucus membrane.

Explanation:

The lining of the epithelial tissue forming the mucus membrane contains some specialised cells which are called the Goblet cells.
These cells secrete a slippery substance called the Mucus.
The Mucus is a dense, aqueous and slippery substance that is composed of anti-microbial enzymes like lysosyme, immunoglobulins (antibodies) and glycoproteins like mucins.
The mucus secreting cells line the internal tracts of the body that come into contact with outside environment, like the respiratory tract, alimentary canal, urino-genital tract.
If any microbial pathogen gain access into any of these tracts the lysosyme in the mucus causes the microbial cells to undergo lysis, hence killed.
The immunoglobulins, on recognising a pathogen, activate the immune cells of the body to fight against the intruding pathogen.

Which substance is an example of organic matter?A. Carbon dioxide
B. Oxygen
C. Sugar
D. Salt

Answers

C. Sugar , is best option.

C. sugar. is the answer for (apex)

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The carrying capacity of an ecosystem will most likely become unbalanced when?

The double layer of lipids that makes up the majority of the cell membrane is called the