Answer:
The correct answer will be -The background appears brighter than the specimen which appears darker.
Explanation:
The light microscope uses sunlight energy to view the specimens in the microscope.
The light microscope is of two types depending on the appearance of the background of the specimens: Bright-field and Dark field specimens. Since in bright-filed microscope, the specimens appear darker than the background which appears darker helps visualize the sample clearly.
Thus, The background appears brighter than the specimen which appears darker is the correct answer.
Homologous chromosomes are two similar chromosomes that an individual inherits from their parents. They contain identical gene segments in the same locations, determining specific characteristics or traits. For an example, different gene sequences in these chromosomes determine a trait like human blood type.
Two similar chromosomes you inherit from your parents are called homologous chromosomes. These matched pairs of chromosomes within a diploid organism are the same length and have specific nucleotide segments, called genes, at the same location. These genes, which are found on the homologous chromosomes, determine specific characteristics by coding for specific proteins, also known as traits.
One chromosome of a homologous pair is inherited from each parent. For instance, human blood type, a certain trait, is determined by three possible gene sequences (A, B, O) that can be found on these chromosomes.
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The answer is: The earths interior is hot.
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The bag is more concentrated in starch than the beaker. This is because the bag contains a solution of starch and water, while the beaker contains only water.
The starch molecules are unable to pass through the plastic bag, so they remain concentrated in the bag. The water molecules, however, are able to pass through the bag, so they diffuse into the beaker, making the solution in the beaker less concentrated in starch.
If you were to leave the bag and beaker for a long enough period of time, all of the starch molecules would eventually diffuse into the beaker, and the concentration of starch in both the bag and beaker would be the same. However, in practice, this would take a very long time, as the rate of diffusion is relatively slow.
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B. Mitosis produces haploid cells, and meiosis produces diploid cells
C. Chromatids are formed only during the process of meiosis
D. Mitosis has an anaphase I and II, but meiosis only has anaphase I
Meiosis produces four cells, but mitosis produces two cells
Answer:
An ecological pyramid is a graphical representation of the distribution of the biomass to different organisms in successive trophic levels. The energy is being lost by 10% in every higher trophic level, when one organism is consumed by another organism in a food chain. Therefore, the number of trophic levels in a pyramid will be limited.
A. a five carbon sugar, a nitrogenous base, and a phosphate group
B. a five carbon sugar, an amino acid, and a carboxyl group
a polysaccharide, an amino acid, and a phosphate group
C.
D.
a polysaccharide, a nitrogenous base, and a carboxyl group
DNA (deoxyribonucleic acid) is a molecule that contains the genetic instructions necessary for the growth, development, functioning, and reproduction of all living organisms. It is composed of smaller units called nucleotides, which are the basic building blocks of DNA.
The correct option is A .
The backbone of DNA is made up of a sugar-phosphate chain. The sugar component in DNA nucleotides is deoxyribose, which is a five-carbon sugar molecule. Deoxyribose is a key structural element in forming the backbone of the DNA strand. Each nucleotide contains one of four nitrogenous bases: adenine (A), thymine (T), cytosine (C), or guanine (G). These nitrogenous bases are the "letters" of the genetic code and pair with each other in specific ways (A with T and C with G) to form the rungs of the DNA double helix.
Single nucleotide of DNA always contains a five-carbon sugar (deoxyribose), a nitrogenous base (adenine, thymine, cytosine, or guanine), and a phosphate group. These components come together to form the fundamental units of the DNA molecule, allowing it to carry and transmit genetic information.
Hence , A is the correct option
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Answer:
A
Explanation:
Awnser is A