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Oliga [24]
2 years ago
11

Which body composition measuring system uses the volume of a controlled chamber compared to body volume to determine bodyfat per

centage? Body mass index (BMI) Skinfold measurements Bioelectrical impedance (BI) Air displacement plethysmography (ADP)
Biology
1 answer:
krok68 [10]2 years ago
8 0

Air displacement plethysmography (ADP) measures the volume of a controlled chamber compared to body volume to determine body fat percentage.

<h3>What is Air displacement plethysmography (ADP)?</h3>

A two-component model called air displacement plethysmography (ADP) measures mass and volume, allowing for an assessment of body density (Db). This allows for the estimate of fat and fat-free mass using body density, which is calculated by dividing mass by volume (FFM).

With air-displacement plethysmography, an object's volume is indirectly determined by calculating how much air it displaces inside a sealed chamber (plethysmograph). Therefore, a patient is placed inside the chamber and their body volume is measured by how much air they can move while sitting within.

Learn more about plethysmography here:

brainly.com/question/27996533

#SPJ4

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Which part of a DNA molecule is responsible for the direct coding of specific traits in an organism?
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Answer:

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Explanation:

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In a human, only the β cells of the pancreas make insulin and only the chief cells of the stomach make pepsinogen (an inactive f
Tomtit [17]

Answer:

a. Only the DNA of β cells contains the gene for insulin; only the DNA of chief cells contains the gene for pepsinogen

Explanation:

As stated in the question above, insulin production is exclusive to β cells in the pancreas. This is because only these cells have a gene that manages the production and excretion of insulin within an organism. Similarly, only the main cells of the stomach have the capacity to produce pepsinogen, which indicates that the gene responsible for managing this production is unique to these cells.

4 0
3 years ago
The study of psychoneuroimmunology suggests that when a stressful situation is encountered, several biological reactions occur,
zhenek [66]

Answer: d) lightheadedness or unconscious episodes.

Explanation:

There are several ways the body responds to stress but one method used by psychologists to measure this response is Hans Selye's general adaptation syndrome. This occurs in 3 stages:

1. The alarm reaction. This occurs when the stressor is first presented resulting in the RELEASE OF HORMONES from the adrenal gland into the blood stream. The hormone in turn cause sympathetic nervous system activation and increase energy levels, INCREASE RESPIRATION, increase muscle tension, reduce sensitivity to pain, slow down the digestive system, and cause a RISE IN BLOOD PRESSURE.

2. The stage of resistance- this occurs till the stress is removed.

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State the five requirements for a population to be in Hardy-Weinberg equilibrium.
mihalych1998 [28]

When it comes to population evolution and genetics, we cannot fail to cite the Hardy-Weinberg principle which emphasizes that if evolutionary factors such as natural selection, mutation, migration and genetic oscillation do not act on a particular population, the frequencies genotypic proportions will remain constant.

The five requirements for a population to be in Hardy-Weinberg equilibrium are:

  • Large-scale breeding population: For a population to be in Hardy-Weinberg equilibrium, it is important that this population is large, as small populations favor genetic drift (unanticipated fluctuations in allele frequencies from one generation to another).
  • Random mating: In order for the Hardy-Weinberg equilibrium to occur, it is necessary that the mating occur at random, with no preference for certain groups within the population. In this case, we say that the population is in panmixia, that is, they all mate at random.
  • No mutations: Mutations alter the total alleles present in a population (gene pool). Therefore, in a Hardy-Weinberg equilibrium population, no mutations should occur.
  • No gene flow: When there is gene flow due to migration or immigration of individuals, some genes may be included or excluded from the population. Thus, in an equilibrium situation, no gene flow occurs.
  • Lack of natural selection: For a population to be in Hardy-Weinberg equilibrium, natural selection must not be acting on it. If natural selection acts, some genotypes will be selected, modifying the allelic frequencies of the population.

5 0
3 years ago
A. What is exponential growth?
Over [174]

Answer:

A process that increases quantity over time.

Explanation:

The formula for exponential growth of a variable x at the growth rate r, as time t goes on in discrete intervals (that is, at integer times 0, 1, 2, 3, ...), is:

X_{t}= X_{0} (1+r)^{2}

Exponential growth is a process that increases quantity over time. It occurs when the instantaneous rate of change of a quantity with respect to time is proportional to the quantity itself.

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