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3 years ago

Explain the function/interaction of the repressor and operator in the lac operon.

Medicine

1 answer:

vazorg [7]3 years ago

6 0

Answer:

1 gene controlled by the Lac promoter and a given operator. 24. If the repressor mutant binds the operator variant, GFP expression is decreased; the stronger the binding interaction, the lower the expression. A repressor plasmid library was transformed into competent cells containing a given, single, operator.

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When the person is being fed through an intravenous central catheter, they are given _____________________ nutrition.

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Total parenteral nutrition

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Adults should get a booster of the DTP vaccine every ten years.<br> True or false

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Adults should get a booster of the DTP vaccine every ten years.

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3 years ago

Which three muscles flex the knee?

Umnica [9.8K]

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The hamstring group muscles (semitendinosus, semimembranosus, and biceps femoris) flex the knee and extend the hip.

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4 years ago

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The primary effect of the elevated plasma concentration of growth hormone during intense exercise is to

ivolga24 [154]

Answer:

This question lacks options, options are:

A. increase the synthesis of contractile protein in muscle.

B. promote long bone growth.

C. favor the mobilization of FFA and reduces tissue use of blood glucose.

D. none of the above.

The correct answer is A.

Explanation:

Plasma concentration is the amount of a substance (hormones, glucose, proteins, among others) that circulates in the blood. The main action of growth hormone is to stimulate protein synthesis, through the mobilization of amino acid transporters, in a manner analogous to glucose and insulin transporters. In addition to stimulating protein synthesis, the growth hormone simultaneously mobilizes fat by direct lipolytic action. The processes of muscle protein synthesis and muscle protein breakdown occur simultaneously. This constant turnover of proteins allows the muscle fibers to modify their structure when the demands of loads or food vary. The plasticity of skeletal muscle in responding to changing loads or contraction patterns is evidence of the ability to remodel present in fibers. While resistance exercise significantly stimulates the synthesis of muscle contractile (myofibrillar) proteins, resistance exercise will have a greater impact in stimulating mitochondrial protein synthesis, thus allowing a specific muscle adaptation to exercise.

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3 years ago

What is the principal reason that appetite is turned off immediately after a person finishes an intense workout

notka56 [123]

<em>The question is incomplete. Please read below to find the missing content.</em>

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Ghrelin is a hunger hormone that stimulates appetite and promotes fat storage. An intense workout may suppress the release of ghrelin and hence turn off the appetite 5) The elevated blood lactate level antagonizes ghrelin.

Your belly releases ghrelin when it is empty to signal your mind that it is time to devour. Ghrelin is often called the starvation hormone, but it does extra than manage starvation. It also signals your pituitary gland to launch boom hormones, plays a position in insulin release, and protects your cardiovascular health.

Exposing your frame to chill and even bloodless temperatures may additionally help recruit extra brown fat cells. a few research shows that just 2 hours of publicity each day to temperatures around 66°F (19°C) can be sufficient to turn recruitable fat brown. You may remember taking a chilly bath or ice bathtub.

The important thing neurotransmitters controlling the urge for food, at the least in vertebrates, are serotonin (5-HT) and catecholamine. these neurotransmitters act to reduce feeding behavior and therefore meal consumption.

What is the principal reason that appetite is turned off immediately after a person finishes an intense workout

1) The sense of smell and taste are suppressed for at least one hour.

2) Glucose and Fatty acid are abundant in the blood.

3) Leptin secretion is markedly increased.

4) The feeling of thirst overpowers the desire for food.

5) The elevated blood lactate level antagonizes ghrelin.

Learn more about appetite here brainly.com/question/886698

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2 years ago