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evablogger [386]
3 years ago
11

I need help plzzzzz plsnvkrnxivmwjicj

Biology
1 answer:
baherus [9]3 years ago
6 0

Answer: c

Explanation:

i just got done with that test

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One drawback of dams is that they can flood land upstream from the dam and reduce water flow downstream from the dam.
Andrei [34K]
The answer provided would be true
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3 years ago
Many studies have indicated that there is some genetic influence on body weight and composition. Researchers have established a
sukhopar [10]

Answer:

A

Explanation:

The thrifty gene hypothesis postulates that due to dietary scarcity during human evolution, people are prone to obesity by storing energy as fat, an ability to take advantage of rare periods of abundance  and this is advantageous during times of food availability. individuals with greater adipose reserves would more likely survive famine. This tendency to store fat could lead to obesity.

FTO is an enzyme that is encoded in humans by FTO gene located on chromosome 16. Increase in this enzyme is associated with the regulation of energy intake but not feeding reward. Also, the set point theory indicates that bodies are meant to stay within a narrow weight range but it is susceptible to chnage overtime.

4 0
3 years ago
Scientists are interested in determining if selenium, from a nearby mine, magnifies in the tissues of fish living in a lake. Whi
kykrilka [37]

Answer:

The answer is A.

Explanation:

To test if the selenium from the mine has an effect on the fish living in the lake which i assume is close to the mine, testing the tissue of the fish from that lake and comparing it to the selenium levels of the fish from a nearby lake would be a testable hypothesis because there is a comparable aspect and there should be a difference in the numbers between the fish from the two lakes because of their distance to the mine.

I hope this answer helps.

7 0
3 years ago
The pKa of an acid depends partly on its environment. Predict the effect of each of the following environmental changes on the p
Galina-37 [17]
The pKa represents the pH of the medium at which the zwitterionic amino acid assumes most stable ionic form due to structural stabilization. As the pKa is dependent upon the environmental factors of the solution around the amino acids, a change in their structure and localization can cause change in the pKa of the protein. Thus, the answers can be found as below:

Part A: Decrease (As the lysine is basic in nature, it will tend to stabilize the electrostatic interaction and weak interactions between the acidic amino acids and hydrogen bonds in the viscinity, thus lowering the pH and hence pKa of the protein)

Part B: Increase (As the carboxyl group is acidic in nature, removal of it will tend to increase the pKa since the basic amino acids will tend to accumulate more negative charge in their viscinity)

Part C: Increase (As glutamic acid is an acidic amino acid, its shift from outside to a non-polar site will prevents its ionization and hence the pKa will tend to shift from slightly acidic to slightly basic, hence increase)
3 0
3 years ago
Match the words in the left column to the appropriate blanks in the sentences on the right.picky eatingpeak bone masslife expect
Furkat [3]

Answer:

There is no short answer.

Explanation:

  • Food insecurity  usually involves avoidance of new foods, while a picky eating represents a preference for a certain limited number of foods at the exclusion of others.
  • Adolescent bone growth occurs along the epiphyseal plates.
  • In healthy individuals, bone mineral density (BMD) increases through early adulthood.
  • Rates of mass life expectancy  have doubled in children in the past 30 years .
  • Many older adults experience obesity  due to factors like limited income, poor health, or impaired mobility.
  • For individuals born around 1900, the food jag  was around 47 years.
  • Severe arthritisbone can impact mobility, making it difficult to obtain and prepare meals.
  • A congregate meal  can provide nutritious food and socialization for older adults.

I hope this answer helps.

4 0
3 years ago
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