genetics
this is camellia btw :0
The correct answer is true. The venous side of circulation contains complex veins throughout the whole blood vessels. The venous side has a complex system, because it is the one that is tasked to keep the blood flow normal towards the veins and arteries of a person.
Answer:
b. format painter
Explanation:
Format painter is an option that is available on the home tab and it allows copying the formatting present in one to another single cell or a group of cells.
The formatting options can include font style, the color of the text, the border style.
To use the format painter some simple steps needs to be followed:
1. Click on the Format painter tab on the home tab.
2. Clicking on the format painter will help to copy the format of the selected cell.
3. The copied formatting can be applied to other cells of interest by clicking and dragging over the cells where a similar formatting is required.
4. The ESC buttton can be pressed to stop formatting .
Answer:
The correct answer is D. The outermost layer of a virion fullfills both protection and recognition functions of the virus.
Explanation:
A virion is a single viral particle. In this form the virus is physically isolable but without metabolic activity. Many virions can even be crystallized.
A virion, infecting a single host cell, is capable of producing thousands of descendants using the mechanisms of DNA replication, transcription and translation of the infected cell. This viral multiplication is often sufficient to kill the host cell by breaking it (lysandola).
Nucleic acid gives infectious power to the virion. It is enclosed by a protein wrap called capsid which is always formed by a number of individual proteins, called structural subunits. These subunits, associating in a specific way, form larger complexes called capsomeres. The set of nucleic acid and proteins is called the nucleocapsid of the virus, which can be enclosed by a membrane called pericapside envelope. Viruses without this membrane are called naked. Virus membranes are made up of a lipid bilayer, often associated with virus-specific proteins. The main function of the envelope is to help the virus enter the host cell. The surface glycoprotein serves to identify and bind to the receptor points in the host membrane. The viral envelope is then fused with the cell membrane, allowing the capsid and the viral genome to enter.
A step further down the evolutionary scale is the virino and below it the viroid and the prion; higher up is the virus.
The four types of macromolecules in cells are nucleic acids, lipids, proteins, and carbohydrates.
