The ozone layer.
The ozone layer is part of the stratosphere.
Answer: True
Explanation:
The pleopod is abdomen found in the crustaceans which is primarily used as swimming legs.
They are also used for brooding eggs, catching food, respiration. They are appendages that is found in most of the crustaceans.
The process of respiration takes place by gills. This structure helps crustaceans to respire in water supported by pleopod.
hence, the given statement is true.
When an antigen is bound to a class i mhc molecule, it can stimulate a cytotoxic T cell
A transmembrane chain, which is produced by a class I MHC gene, plus a tiny extracellular protein known as 2-microglobulin make up class I MHC proteins. The gene that encodes the 2-microglobulin does not belong to the MHC gene cluster, and it does not traverse the membrane.
The cytotoxic T cell interacts with a virally infected cell via its T cell receptor and the MHC class one protein on the virally infected cell, which is the interaction between the MHC class one protein and the cytotoxic T cell. The identification of targets for destruction by a cytotoxic T cell depends on this interaction between the T cell receptor and MHC class one.
Learn more about cytotoxic T cell here;
brainly.com/question/27459085
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Answer:
D) An original parent DNA strand and one newly synthesized DNA strand comprising a new DNA molecule.
Explanation:
- Semi-conservative replication refers to two strands of DNA unzip, and a new strand is assembled onto each 'conserved' strand.
- The replicated double helix consists of one old strand and one newly synthesised strand.
- It describes the structure of DNA, a twisted helix of two strands with bases joining the strands.
Hello!
Yes, the selection in this case would be natural selection because whales of maximum length are mating naturally on their own choice. We are not maintaining and experimenting on them for the analysis that what will be the size of their offspring, if we do that, that is artificial selection.
Why it is natural selection?
Natural selection is the process where organisms with favorable traits are more likely to reproduce. In doing so, they pass on these traits to the next generation. Over time this process allows organisms to adapt to their environment.
Here both whales are of good size (favorable trait) and have definitely better chances of mating and producing fertile generation.
Hope it helps! :)