The answer to this question is B
It is speeding up because more distance is covered every second.
Explanation:
The car can be described to be speeding up because more distance is covered every second.
From what we understand about velocity and acceleration, the car is accelerating through the ramp.
It's velocity is increasing with every second it covers.
This will invariable reduce the time between each distance covered.
Originally, the toy car starts with a low initial velocity or speed. As it gains acceleration, the speed will increase and more distance covered per seconds.
This is why the dots clustered towards the end of the diagram. The positions are getting closer and distance reducing per seconds.
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Answer:Option D
Explanation:
The carbohydrates rich meal will help the athlete in competition as it will help in increasing the endurance of the body.
A carbohydrate rich meal will increase the glycogen stores in the muscles and liver which will increase the ability of the athlete.
The reserves will allow more aerobic respiration which will increase the efficiency of sportsman.
hence, the correct answer is option D
The sequence of events in meiosis I is first 'chromosomes condense and crossing over occurs', second 'paired homologues align at the equator', third 'chromosomes are pulled to opposite poles', fourth 'separated homologues cluster at each pole' and fifth 'nuclear envelope re-forms around each daughter nucleus'.
Meiosis is a reductional cell division by which a parent cell produces four daughter cells with half of the genetic material.
Meiosis can be divided into meiosis I and meiosis II.
During prophase I (meiosis I),
- Begins the formation of the spindle apparatus from cytoskeleton present in the cytoplasm
- The homo-logous chromosomes pair and crossing over occurs. Crossing over refers to the interchange of genetic material between non-sister chromatids.
During metaphase I,
- The homo-logous chromosomes align at the equator plate of the cell
- The microtubules attach to the kinetochores of sister chromatids
During anaphase I,
- The chiasmata, which link homo-logous chromosomes together until anaphase I, are broken
- The homo-logous chromosomes are pulled to opposite poles, thereby, one chromosome of each pair randomly moves to one pole of the cell and the homologous chromosome to the other.
During telophase I,
- The separated homologous chromosomes cluster at each pole of the new cells
- The nuclear envelope is formed around each cell nucleus.
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Answer:
Genetic information is bundled into packages of DNA known as chromosomes.
Explanation:
Chromosomes can be described as thread-like structures made up of genes. A genes can be described as a hereditary molecule which is made up of a segment of DNA. Hence, a chromosome contains genetic information packaged into bundles of DNA.
The number of chromosomes vary for each organism. For example, the number of chromosomes in each somatic cell of the human body is 46. These chromosomes occur in the form of homologous pars.