If all cells contain the same DNA, how do different types of cells "know" which genes they need to transcribe? What are the molecules that store and process genetic information called? What are the three major procedures of DNA Replication? Explain what occurs during DNA replication. What cata...
How does the structure of prokaryotic cells enable metabolic functions to be carried out? How do cells sense chemoattractants/chemorepellants and also explain the molecules involved in the process? Describe how cells communicate via the local signaling mechanism. ...
Among them are adipose-derived mesenchymal stem cells (ADMSCs), secreting numerous bioactive molecules, like growth factors, cytokines, and chemokines. Their unique features, including immunosuppressive and immunomodulatory properties, make them an ideal candidates for clinical applications. Numerous ...
A chemistry degree may lead to a job in a variety of industries, including health care, forensics and pharmaceuticals. Someone who is intrigued by the way atoms combine into molecules or who is fascinated by the diversity of elements on the periodic table may want to pursue a degree in chemi...
While the dependoparvoviruses require helper virus for a successful replication within cells, the autonomous types do not (Kailasan et al., 2015). Altogether, the subfamily Parvovirinae consists of eight genera: Amdoparvovirus (Amdovirus), Aveparvovirus, Dependoparvovirus (Dependovirus), Erythro...
"Less than 1% — maybe up to 2 or 3% of the sperm that are actually deposited — make it all the way to where the egg is," Miller said. "A lot of them are flushed back out from the tract. Some are eaten up by immune cells in the uterus, because sperm are foreign." Up to ...
Being exposed toair pollutionand smoking cigarettes can also fuel the formation of wrinkles by inducingoxidative stress, a state of imbalance between cells' production and elimination of harmful molecules called free radicals, Jaliman noted.
Oxygen is important to the third step of the aerobic cellular respiration cycle. During this step, electron transport molecules carry electrons to the cells, where they are harvested and used for ATP production. After the electrons are used, they combine with oxygen and hydrogen to form water an...
Cells are the building blocks of life.All living things have cells - from small, single-celled organisms like bacteria to large, multicellular organisms like humans. Cells have specific functions that help keep these varied creatures alive and kicking. In order to make these functions happen, chem...
How does facilitated diffusion enable molecules to cross cell membranes? Why is it important for cells to be able to use both active and passive transport to transport molecules across the cell membrane? Why can nonpolar molecules pass through the cell membrane?