BIOLOGY MIDDLE SCHOOL

The four types of nitrogen bases of DNA nucleotides are 1________,2______, guanine, and cytosine.1.chlorine
adenine
ermine
tidine

2.fluorine
purine
thymine
thalamine​

Answers

Answer 1
Answer:

The four types of nitrogen bases of DNA nucleotides are adenine, thymine, guanine and cytosine.

What is DNA?

DNA is defined as deoxyribonuclic acid and it is a polymer made up of two polynucleotide chains that arranged in foiled structure to form a double helix carrying genetic information for the various processes such as growth development functioning and reproduction.

There are four nitrogen bases of DNA nucleotides are such as adinine, thymine, guanine and cytosine.

Friedrich miescher discovered DNA in the year of 1860.

The main function of DNA is to carry information from one generation to another generation this is the reason due to which DNA is also known information molecule.

In our body DNA is found in the nucleus of the cell and it is known as nuclear DNA.

The shape of DNA is double helical structure.

Siblings share only about 50% of same DNA due to the reason of recombination. The life span of DNA is 521 years.

Therefore,the four types of nitrogen bases of DNA nucleotides are adenine, thymine, guanine and cytosine.

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Answer 2
Answer:

Answer:

1. Adenine

2. Thymine

Explanation:

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Something that can be broken down by living organisms is?

Answers

The answer is "biodegrading". Biodegrading is fungi, or fungus that breaks down fertilizers or chemical composition giving it energy. Theres also animals that break down composition or consume dead matter for example a vulture, they play a big role in the ecosystem by consuming dead matter and making the area cleaner for other organisms.

Hope this helps!

Which activity is considered a baseline activityA.sprinting to catch a bus
B.putting away groceries
C.walking to a friend's house
D.mowing the lawn

Answers

The answer to the question stated above is letter C.walking to a friend's house.

Walking to a friend's house is considered a baseline activity. What are baseline activities?Baseline activities are those light-intensity activities of daily life, such as standing, walking slowly, and lifting lightweight objects. Most of this people who only do baseline activities are considered to be inactive.

Final answer:

The b. Putting away groceries is considered a baseline activity, which is a low-intensity activity that helps maintain overall fitness.

Explanation:

Baseline activity typically refers to the normal or expected level of activity in a system, often used in medical or scientific contexts. It serves as a reference point for assessing changes or deviations. For instance, baseline activity in brain scans helps detect abnormalities by comparing them to the typical neural functioning of a healthy individual.

The activity that is considered a baseline activity is putting away groceries. Baseline activities are activities that are relatively low in intensity and can be sustained for a long period of time without excessive fatigue. These activities help maintain a person's overall level of fitness and are essential for a healthy lifestyle.

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Which of the following is not a likely result of destruction of wetlands?A.
decline in plant and animal populations

B.
overgrowth of reeds and cattails

C.
pollution of nearby streams

D.
increased frequency of floods

Answers

Answer:

The correct answer is option B,  overgrowth of reeds and cattails

Explanation:

Wetlands damage causes damage in vegetation and thus there are least chances that there can be overgrowth of reeds and cattails. Vegetation gets destroyed in a damaged wetlands due to the following reasons –  

a) Deposition of excessive pollutants from ruff off, flowing surface water etc.

b) The wetland might have damaged due to overgrazing  

c) Shift in river course

d) Hurricanes, storms, strong winds

I think it is B too because none those other ones mack sense

What is the process by which nutrients move from the digestive system into the bloodstream

Answers

The process is called absorption:D

Suppose you want to find out the effects of light on the growth of tomatoes. What variables do I control

Answers

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Explain how erosion is different to weathering.

Answers

Erosion transports/spreads broken down minerals while weathering is the processes of rocks and earth minerals being broken down.
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