Answer:
Messenger RNA, or mRNA, leaves the nucleus through pores in the nuclear membrane. ... During mRNA processing, the introns (non-coding regions) of the pre-mRNA are removed, and the exons (the coding regions) are spliced together. Additionally, a 5' cap and a 3' poly A tail are added to the pre-mRNA
Explanation:
Answer: A
Explanation: Diffusion is important to cells because it allows them to gain the useful substances they require to obtain energy and grow, and lets them get rid of waste products. This table shows examples of substances required by cell and associated waste products.
Like Geography, climate, times and environment system
The evolution of the peppered moth evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial revolution .The frequency of dark-coloured moths increased at that time, an example of industrial mellaniam. Later, when pollution was reduced, the light-coloured form again predominated. Industrial melanism in the peppered moth was an early test of Charles Darwin natural selection in action, and remains as a classic example in the teaching of evolution.
The danger of blood collecting inside the pericardial sac after blunt chest wall trauma is that: the heart cannot contract as effectively.
