Answer:
Explanation:
Los períodos irregulares pueden tener varias causas, desde desequilibrios hormonales hasta afecciones subyacentes, y tu médico debe evaluarlos.
You can keep track of your findings and find averages
Answer: They are loosely packed so as to allow gas exchange in air spaces to move freely
Explanation: The mesophyll cells of the spongy cells are packed loosely, in order to allow proper and efficient gaseous exchange to take places easily. The large air pocket of the mesophyll cell allow gas exchange between different areas of the leaves. The cells in mesophyll, contains few chloroplast which are generally responsible for photosynthesis. Gas exchange in the mesophyll cells of the spongy layer allows photosynthesis to take place.
The genetic base of the shape of orchid is very complex.
Mendelian traits are described as simple traits determined by one gene. The different alleles of the gene contribute to the difference in the trait. This is true for some traits in plants, animals including humans and other organisms, but not for the shape of orchids.
The shape of orchid flowers is determined by the ABCDE group of genes that are responsible for the body plan in plants. These genes are the equivalent of HOX genes of animals.
The protein products of different genes of the ABCDE group interact with each other in complex ways creating different shapes of orchids.
Answer:
The correct answer is: Attachment.
Explanation:
- Pilus are thread like structures which are present on the surface of the bacterial cell.
- They are mainly responsible for attaching the bacterial cells to a substrate, for obtaining food or to an eukaryotic cell for the purpose of infection.
- Pilus also mediate the process of conjugation in some bacterial cells.
- Conjugation is a process by which genetic material or plasmids are transferred from one bacteria to another through a channel formed in between the two bacteria by the help of the pilus.
- Pilus also helps the bacteria by preventing them from getting recognised by the immune cells in the host.
- A defective pilus will affect all the above processes, resulting in death of the bacteria.
