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True or false Living keratinocytes exfoliate from the epidermis as tiny specks called dander?
False. Living keratinocytes do not exfoliate from the epidermis as dander. Dander is composed of dead skin cells that shed from the epidermis.
True or false organisms except some primitive plants are made up of cells?
No. According to cell theory, the cell is the basic unit of all living things - therefore all living things are made of cells (some are made of a single cell, these are known as unicellular organisms).
Do non living things have cells?
No, non-living things do not have cells. Cells are the basic structural and functional units of living organisms. Non-living things can consist of molecules, atoms, or other material structures but do not contain cells.
True or false viruses are smaller than bacterial cells?
True. Viruses are smaller than bacterial cells. Bacterial cells are living organisms and are much larger in size compared to viruses, which are non-living particles that require a host cell to replicate.
Is it true or false that a living cell can divide only once?
False. A living cell can divide multiple times through a process called cell division, where one cell splits into two daughter cells. This is a crucial part of growth and repair in multicellular organisms.
Is it true or false that the cell theory states that cells are produced from non-living cells?
It is false.
What proteins act as catalysts in mediating and speeding specific chemical reactions?
Enzymes are proteins that act as catalysts in mediating and speeding specific chemical reactions in biological systems. They lower the activation energy required for a reaction to occur, making the reaction proceed faster. Enzymes are highly specific, each one catalyzing a particular reaction or a group of related reactions.
Is this true or false that almost all cells have nucleas?
It is true.
Are all living things made of cells?
false
True or false Living keratinocytes exfoliate from the epidermis as tiny specks called dander?
False. Living keratinocytes do not exfoliate from the epidermis as dander. Dander is composed of dead skin cells that shed from the epidermis.
True or false organisms except some primitive plants are made up of cells?
No. According to cell theory, the cell is the basic unit of all living things - therefore all living things are made of cells (some are made of a single cell, these are known as unicellular organisms).
Is a cell a unit of living thing true or false?
True. A cell is the basic structural and functional unit of a living organism. All living things are made up of one or more cells, which perform necessary functions to sustain life.
The woody cells of a tree are formed from dead connective tissues true or false?
False. The woody cells of a tree are primarily formed from living cells called cambium that produce new layers of xylem and phloem, which then become part of the tree's structure as they mature and lignify. Wood cells themselves are actually dead at maturity and provide structural support to the tree.
Do non living things have cells?
No, non-living things do not have cells. Cells are the basic structural and functional units of living organisms. Non-living things can consist of molecules, atoms, or other material structures but do not contain cells.
Are all living things made out of cells?
Yes, all living things are made up of cells :)
True or false viruses are smaller than bacterial cells?
True. Viruses are smaller than bacterial cells. Bacterial cells are living organisms and are much larger in size compared to viruses, which are non-living particles that require a host cell to replicate.
Is it true or false that a living cell can divide only once?
False. A living cell can divide multiple times through a process called cell division, where one cell splits into two daughter cells. This is a crucial part of growth and repair in multicellular organisms.
