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What part of the hair contains actively growing cells?
The actively growing cells in hair are found in the bulb, which is located at the base of the hair follicle. This is where new hair cells are produced, allowing the hair to grow longer.
What are vegatative cells?
Vegetative cells are cells that are actively involved in the growth, development, and maintenance of an organism. In plants, these cells are responsible for processes such as photosynthesis, respiration, and nutrient uptake. In microorganisms, vegetative cells are the actively growing and dividing cells that carry out essential functions for survival.
Where are the smallest cells of the root tip located?
The smallest cells of the root tip are typically located in the meristematic region, which is the actively growing area of the root where new cells are continuously produced. These cells are important for root growth and development.
What cells are in an onion tip but not the onion?
The cells in an onion tip but not the onion itself are usually actively dividing cells located at the growing tip of the onion root, known as the root cap cells. These cells help protect the delicate meristematic cells responsible for root growth and can often be found in the root zone of plants.
What protects the meristem of a plant?
The meristematic region in the stem tip is referred to as the shoot apical meristem. Leaf primordia develop from the lateral flanks of the shoot apical meristem. They curve up during growth and the older larger primordia serve a protective function.
What part of the hair contains actively growing cells?
The actively growing cells in hair are found in the bulb, which is located at the base of the hair follicle. This is where new hair cells are produced, allowing the hair to grow longer.
What are vegatative cells?
Vegetative cells are cells that are actively involved in the growth, development, and maintenance of an organism. In plants, these cells are responsible for processes such as photosynthesis, respiration, and nutrient uptake. In microorganisms, vegetative cells are the actively growing and dividing cells that carry out essential functions for survival.
Why do cells that are placed in fresh media not immediately enter logarithmic phase of growth?
. The cells need to switch their metabolic state from a dormant one to an actively growing one .
What property do spores possess that vegetative cells do not?
Spores possess a highly resistant outer protective coat that allows them to endure extreme environmental conditions, such as heat, desiccation, and radiation, which vegetative cells cannot withstand. This resilience is due to their dormant state and the presence of dipicolinic acid, which stabilizes their DNA. Additionally, spores have low metabolic activity, unlike vegetative cells, which are actively growing and metabolizing.
Is it true that a sterile environment is free of actively growing cells and microorganism but may contain viruses or dormant life forms such as endospores?
Yes, that is correct. A sterile environment is free of actively growing cells and microorganisms, but it may still contain viruses or dormant life forms like endospores that are not actively replicating. It's important to note that achieving absolute sterility can be very challenging and is often not practical in many environments.
Who protective layer that covers a cells surface?
Either the cell membrane, or the cell wall. The cell membrane is most common in animals, and protists, whereas some monerans, and most plants and fungi have a cell wall.
How do drugs used to treat cancer affect cell growth?
Most drugs used to treat cancer kill actively growing/replicating cells.
Where are the smallest cells of the root tip located?
The smallest cells of the root tip are typically located in the meristematic region, which is the actively growing area of the root where new cells are continuously produced. These cells are important for root growth and development.
What enzyme is present in cancer cells which scientists believe allows the cancer cells to keep growing indefinitely?
The enzyme present in cancer cells that allows them to keep growing indefinitely is called telomerase. Telomerase helps maintain the length of the telomeres, which are the protective caps on the ends of chromosomes. By preventing telomeres from shortening with each cell division, telomerase enables cancer cells to keep dividing and growing uncontrollably.
What cells are in an onion tip but not the onion?
The cells in an onion tip but not the onion itself are usually actively dividing cells located at the growing tip of the onion root, known as the root cap cells. These cells help protect the delicate meristematic cells responsible for root growth and can often be found in the root zone of plants.
Which type of tissue covers the body surface and lines organs?
Epithelial tissue covers the body surface and lines organs. It is made up of closely packed cells that form a protective barrier and helps with functions like absorption, secretion, and sensation.
What are protective cells?
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