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kherson [118]
3 years ago
13

The level of carbon dioxide was measured in a garden and on a city road. Where do you think the carbon dioxide level will be hig

her and why?
Biology
1 answer:
uysha [10]3 years ago
5 0
The amount of carbon dioxide will be higher on the city road because there are less plants to convert carbon dioxide to oxygen through the process of photosynthesis. 
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Ovules produced by an entirely green plant contain a rare mutation in a nuclear gene that is involved in chlorophyll synthesis,
sveticcg [70]

Answer:

The plant will produce less chlorophyll

Explanation:

The plant still has a functional allele provided by the paternal gamete, thereby the leaves have this enzyme required for chlorophyll biosynthesis. In consequence, the plant can produce chlorophyll pigment but in less quantity, since it has only a functional allele coding for a key enzyme involved in the chlorophyll pathway  

7 0
3 years ago
Which level(s) of organization are the main focus of<br><br> Vitor Becker's work?
Olenka [21]

<u>Answer:</u>

<em>Community and ecosystem levels of organization are the main focus areas of Vitor Becker’s work. </em>

<u>Explanation:</u>

<em>Serra Bonita reserve complex was established by Vitor Becker and his wife Clemira Souza in the Atlantic forest of Brazil.</em> He studied agronomy and forestry and has a Ph.D in entomology.

Becker realized that the Atlantic forests are largely destroyed. After retirement Becker and Souza settled in the <em>Serra Bonita mountain region and using their savings they bought land in the region and converted the area into Serra Bonita reserve complex. </em>

3 0
3 years ago
Over 1,800 mutations have been described within the CFTR gene. These mutations can be readily detected using PCR and DNA sequenc
sertanlavr [38]

Answer:

The correct answer is - option C.

Explanation:

CFTR is a short form of cystic fibrosis transmembrane conductance regulator protein which is caused by a recessive mutation in this protein. This mutation results in the accumulation of mucus in secretory organs.

As the disease is a recessive disease, for the mutant phenotype to expressed both copies of the allele required to be recessive.

The mother is negative for the CFTR. Hence, she will not transfer the mutant allele to her child So, the child would have a wild-type phenotype even if the father having two copies of recessive allele.

Thus, the correct answer is - option C.

8 0
3 years ago
Effects of pollution might includea. inability to see the top of skyscrapers because of the smog.b. acid rain-induced destructio
poizon [28]

Answer:

e. all of these answers

Explanation:

Air pollution in addition to affecting people, animals, plants and goods, causes other problems related to the changes that occur in its composition, such as: climate change, acid rain and the destruction of the ozone layer phenomena that affect the planet globally and that it is necessary to stop urgently by taking the necessary measures.

Main effects of pollution:

- Effects on human health : It is difficult to determine the exact relationships between exposure to air pollution and diseases developed in humans, especially in the long term, they are not known exactly, but there is evidence that high concentrations of pollutants in the atmosphere are a danger for the human being.  it can also act as a vector to spread diseases

- Effects on the environment :

It is in the natural environment where the first signs of the harmful effects of air pollution were seen, plants and vegetation act as an indicator in this regard.

Some of the most common contaminants :

SO2 ; O3 ; Fluorides ;  HCL; Cl2; NO2

- Effect on materials :

Contaminants can affect materials by particle deposition or abrasion and also by chemical reactions between the contaminant and the material. For example : stone, iron and paintings

- SMOG:

SMOG is known as fog-type pollution that occurs in some cities when the combination of certain factors occurs, depending on weather conditions and certain pollutants.

Some of them are:

Industrial smog

Photochemical smog

This phenomenon (SMOG) occurs when the mixture of nitrogen oxides and volatile hydrocarbons emitted by cars and industries and atmospheric oxygen react with solar radiation and form ozone.

- Acid deposition.

It is a regional effect. It results from the transformation of atmospheric pollutants such as sulfur dioxide (SO2) and nitrogen oxides (NOx) into secondary pollutants such as sulfuric acid (H2SO4), ammonium nitrate (NH4NO3) and nitric acid (HNO3).

Therefore, air pollution caused by SOx and NOx affects water, soil and ecosystems.

- Water contamination

Pollution of the waters of a sick river and kill fish, but not only these, but all forms of aquatic life .

Pesticides and other toxic chemicals that are used in the domestic environment, farms and industrial production, and that are dumped into the water, cause fish death.

3 0
3 years ago
Blood samples are taken from the heel of newborn babies to test for a mutation in the pku gene
larisa [96]

Answer:

The answer is true.

Explanation:

PKU is an inherited metabolic disease caused by a mutation of the gene for an enzyme responsible for metabolism of the amino acid phenylalanine.

3 0
3 years ago
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