B.) lower, decreased
C.) higher, decreased
D.) higher, increased
Doppler Effect is defined as the change of frequency of a sound or light wave produced by a moving source and a stationary observer. The waves when they move towards the object compresses.
The correct answer is:
Option B. lower, decreased
The Dopplereffect can be explained as:
1. The listener will have the impression that the moving source is higher in the pitch as it moves away from the listener.
2. The frequency of the waves will be decreased because the time between the successive sound waves is lengthened or increased.
Therefore, the pitch will be lowered and the frequency will be decreased.
To know more about the doppler effect, refer to the following link:
Answer: D) Protista
Explanation:
The kingdom Protista includes organisms which are simple eukaryotic, they are usually composed of single cell or multicellular organisms. These organisms either live in water or in terrestrial habitats. Some of the organisms in the kingdom Protista exhibit characteristics which are similar to plants and animals. As, some organisms are parasitic like animals and others can conduct photosynthesis like plants in order to obtain food. Therefore, according to the above explanation kingdom Protista includes autotrophic, hetrotrophic, unicellular and multicelluar organisms.
Answer: Chitin
Explanation:
Carbohydrates can be defined as the class of bio molecules which includes sugar, cellulose, chitin and many forms.
Chitin is the major constituent of the exoskeleton. It is made of polysaccharide. It is a type of exoskeleton which is is found in arthopods which provides support to the shrimp.
This polysaccharide is chitin.
The specialized carbohydrate used for structure in shrimp is chitin. Chitin is a long-chain polymer of N-acetylglucosamine, which is a derivative of glucose.
Chitin provides strength and flexibility to the exoskeleton, allowing the shrimp to move and grow while still being protected and is also found in the exoskeletons of other arthropods, such as crabs and lobsters. It is also found in the cell walls of some fungi and algae.
Chitin is a very strong material. It is even stronger than steel, pound for pound. However, it is also very lightweight. This makes it an ideal material for the exoskeletons of shrimp and other arthropods.
The exoskeleton of a shrimp is made up of several layers of chitin. The outermost layer is the hardest layer. It is called the epicuticle. The epicuticle is made up of a waxy substance that helps to protect the shrimp from water loss and from predators.
Learn more about Chitin at:
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b. Translation may not take place.
c. Future transcription will not take place.
d. Ribosomes may be destroyed.
I thought it was A, but again it was incorrect, Can someone help me find the correct answer and the reasoning behind it.
Answer:
b. Translation may not take place.
Explanation:
DNA transcription into RNA is the starting point for all phenotypic expression. As in replication, access to DNA is mediated by the interaction between proteins and certain regions strategically placed in relation to the segment to be transcribed; and it also requires helicases that denature the double strand to allow the "reading" of the nucleotide sequence by polymerases. But RNA polymerases, enzymes that perform transcription, use only one of the DNA strands as a template, allowing them to pair again at the end of the process; therefore, the end product of the transcription, or primary transcript, is a single-stranded messenger RNA molecule.
Although it is rare, messenger RNA can have errors. These errors are less harmful than the errors that occur in DNA, but they can prevent the translation from occurring later.