Answer:
A) A rabbit hides when it observes a predator.
Explanation:
During a
head injury or a trauma, the brain can limit the spread of the damage by
forming a glial scar which seals off the damaged region from the rest of the
important parts. During this process, the glial cells are particularly
important. In specific, the glial cells Astrocytes will be the most abundant in
this process since they produce glucose and other essential nutrients which help
support the viability of the surviving cells. In addition, the astrocytes is responsible in maintaining the
brain environment stability (homeostasis), supplying nutrition for neurons, and
recycling neurotransmitters.
Therefore the answer to
this question would be:
<span>“Astrocytes”</span>
Answer:
No
2. Yes
Explanation:
This is because DNA undergo transcription to produce RNA and RNA undergo translation to produce protein. Translation is the process where mRNA molecule is used as a template to produce protein.
RNA undergo mutation more than DNA and this is because the enzymes found in RNA viruses and participate in copying viral genomes is why it occur so. These enzymes does not have the abilities to recognize DNA damage that enzymes in most organisms have.
Cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells. Cells are the basic unit of structure in all organisms and also the basic unit of reproduction. With continual improvements made to microscopes over time, magnification technology advanced enough to discover cells in the 17th century. This discovery is largely attributed to Robert Hooke, and began the scientific study of cells, also known as cell biology. Over a century later, many debates about cells began amongst scientists. Most of these debates involved the nature of cellular regeneration, and the idea of cells as a fundamental unit of life. Cell theory was eventually formulated in 1839. This is usually credited to Matthias Schleiden and Theodor Schwann. However, many other scientists like Rudolf Virchowcontributed to the theory. It was an important step in the movement away from spontaneous generation.
The three tenets to the cell theory are as described below:
All living organisms are composed of one or more cells.
The cell is the basic unit of structure and organization in organisms.
Cells arise from pre-existing cells.
The first of these tenets is disputed, as non-cellular entities such as viruses are sometimes considered life-forms.
All living things are made of cells. Answer
Macronutrient include water, carbohydrates, fat and protein, so i'm going to have to go with
C. Vitamin C.