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38 degrees Celsius is higher than the necessary core body temperature of 37 degrees. This is detected by the hypothalamus to reduce the temperature through a negative feedback system.The changes brought a...
Procaryotic cells lack organelles (e.g. nucleus) and other internal membrane-bound structures (e.g. endoplasmatic reticulum). Most of their genetic material (i.e. DNA) forms an irregularly shaped structur...
Mitosis is the way in which cells divide. Once one cell has undergone DNA replication, it contains 2 sets of chromosomes (diploid). Once mitosis has occurred, there will be two identical haploid...
The main difference between these two cell types is that eukaryotic cells have their DNA collected inside the nucleus, while prokaryotic cells lack nuclei. Instead, they have a circular piece of DNA calle...
Natural selection is able to occur due to variation within a species. Individuals with certain mutations/alleles may be better adapted to their environment than other members of their species, meaning the...
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