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andre [41]
3 years ago
5

How do the nitrogen bases pairs join in DNA?

Biology
1 answer:
Korolek [52]3 years ago
6 0
There are 4 nitrogenous bases in DNA. Adenine pairs with thymine, and Guanine pairs with cytosine. A Dna Nucleotide consists of a 5 carbon sugar, a phosphate group and a nitrogenous base. These bases are paired up by weak hydrogen bonds, so when they have have to replicate, the enzyme helicase can easily unzip the Dna. <span />
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what is the characteristic of a cell membrane that controls which substances can enter and exit the cell
lorasvet [3.4K]

Answer:

selective permeability

Explanation:

The property or characteristic of cellular membrane to allow certain substances to pass through the cell is known as selective permeability. The movement of molecules and ions across the cell can be active or passive.

3 0
3 years ago
Addison disease
Anna007 [38]

Answer: Addison disease is an adrenal insufficiency. This occurs because of the fact that adrenal gland produces very low quantity of hormones like cortisol, and aldosterone.

Explanation:

1. The symptoms of addison disease are loss of appetite, increased thirst, low mood, and muscle fatigue.

2. The addison disease is an autoimmune reaction, which can affect people of all age groups.

3. It can cause other diseases like tuberculosis.

4. The hormone replacement therapy is ideal for the treatment for addison disease. The use of oral corticosteroids is ideal. The diet containing balanced proteins, carbohydrates, fats, increased intake of vegetables including vitamins, and minerals are necessary for treatment of addison disease.

5 0
3 years ago
What are the negative consequences of improper disposal of electronic waste?​
Gre4nikov [31]

Answer:

1) Increased probability of hazardous chemical contamination.

2) Air, water, and soil pollution.

3) Mortality in both terrestrial and aquatic organisms.

4) Development of diseases in humans.

Explanation:

The improper disposal of electronic waste can have detrimental consequences for the environment and, as a result, to all living beings including humans.

If electronic waste is thrown away in an open area, it warms up and releases hazardous chemicals that are detrimental for the health of living beings. This occurs because <u>electronic objects contain toxic chemicals such as lead, mercury, cadmium, amongst others</u>.

These chemicals will eventually enter both soil and water, harming thousands to millions of terrestrial and aquatic organisms. Moreover, these chemicals will enter the food chain and, as humans consume these affected organisms, we are also affected in numerous ways. For example, ingesting these chemicals could cause reproductive issues, damage to both the nervous and digestive systems, the development of cancer, etc.

4 0
3 years ago
Which statement correctly describes glucose (C6H12O6)?                                            
pshichka [43]
<span>D. It is a compound made of twenty-four total atoms of three different elements.</span>
6 0
3 years ago
Oxygen moves from the lungs to the blood
ArbitrLikvidat [17]
B I think is the correct answer
5 0
3 years ago
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