Answer:
The correct answer is- Immune system
Explanation:
There are physical, chemical and immunological barriers present in our body which helps us to protect from the foreign antigen. They all assist each other and helps in pathogen removal from our body.
The physical barrier includes skin, gastrointestinal tract, respiratory tract, etc which do not allow the microbe to enter the body. Chemical barriers include tear, saliva, acid in the stomach which kills microbes on the body surface.
Immune cells like macrophages, B cells kills microbes when it gets in the body. Lymphatic system also contain immune cells and helps in microbe removal.
So the immune system is assisted by physical barrier, chemical barrier, and lymphatic system.
Both the nucleus and the cytoplasm of a cell are the sites where protein synthesis takes place. A DNA template is used to create RNA in the nucleus. The translation is then carried out by this RNA in the cytoplasm.
Transcription and translation are the two processes that make up protein synthesis. A segment of DNA called a gene, which codes for a protein, is transformed into a template molecule called messenger RNA during transcription (mRNA). In the cell's nucleus, enzymes referred to as RNA polymerases perform this conversion. [2] Eukaryotes make this mRNA prematurely at first (pre-mRNA), which then goes through post-transcriptional changes to produce mature mRNA.
Nuclear pores allow the mature mRNA to be evacuated from the cell nucleus and transported to the cytoplasm, where translation can take place. Ribosomes read the mRNA during translation, using its nucleotide sequence to infer the order of the amino acids. To create a polypeptide chain from the encoded amino acids, the ribosomes catalyse the production of covalent peptide bonds. After translation, the polypeptide chain needs to fold in order to create a functioning protein. For instance, for an enzyme to work properly, the polypeptide chain needs to fold properly in order to create a functional active site. The polypeptide chain initially forms a series of smaller underlying structures termed secondary structures before it can assume a useful three-dimensional (3D) shape.
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Answer: B.The aquatic species’ populations will decrease, and the ecosystem’s carrying capacity will increase.
Explanation:
Limiting factor can be define as the factor which is capable of reducing the population of a species. Carrying capacity can be define as the maximum number of the population of a species that a region or ecosystem can support in terms of availability of resources. The construction of a dam is likely to disturb the native habitat of the living species in the river. As it is going to cut the part of river. The construction of a dam is a limiting factor for aquatic animals species. Due to the decrease in the population of native animals the carrying capacity of a region will increase .
C. Decomposers return nutrients to the soil.
Chimpanzees have a diploid number of 48. 24 total chromosomes should each of their diploid body cells have.
What are chromosomes ?
A chromosome is a lengthy DNA molecule that contains all or a portion of an organism's genetic code. Histones, which act as packing proteins for the most of eukaryotic chromosomes, work with chaperone proteins to bind to and condense the DNA molecule in order to preserve the integrity of the molecule.
The term "diploid" describes an organism's cells having two full sets of chromosomes, with one chromosome from each parent present in each pair. Since humans are diploid, the majority of their cells have 23 pairs of chromosomes.
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