In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
Chromosomes are not visible in the cell’s nucleus—not even under a microscope—when the cell is not dividing. However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope. Most of what researchers know about chromosomes was learned by observing chromosomes during cell division.
The mouth is the beginning of the digestive tract. In fact, digestion starts here as soon as you take the first bite of a meal. Chewing breaks the food into pieces that are more easily digested, while saliva mixes with food to begin the process of breaking it down into a form your body can absorb and use. Hope I’ve helped ;)
<span>The answer is
4 . The population will begin to decrease to depletion of resources and increased competition. This will cause an increase in death rate of the paramecium population as compared to birth rate. This phase follows the latent phase where the population remains the same over time as the population reaches carrying capacity and the birth rate equals death rate</span>
<span>Protists can be unicellular, colonial or multicellular. Each type of protist has its own phylums or divisions. Protozoans are animal-like. Bacteria and other one-celled organisms are typical prey for a protozoa. Some examples of a protozoa are mosquitoes and amoeba. Algae are photosynthetic and are grouped into divisions depending on pigment similarities. A few examples of algae are sea lettuce and kelp. Fungus-like protists are often brightly colored and get their nutrition by absorbing nutrients from their environment.</span>
