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A primary cell cannot be recharged whereas a secondary cell can be recharged. In a primary cell chemical reaction is irreversible whereas in a secondary cell chemical reaction is reversible. ... A primary cell is light and less expensive whereas a secondary cell is heavy and expensive.
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TaigaPrimary cells are non-rechargeable batteries that are designed for single use, while secondary cells are rechargeable batteries that can be reused multiple times by recharging. Primary cells tend to have a higher energy density but cannot be recharged, while secondary cells can be recharged but may have a lower energy density.
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Compare and contrast Primary oocyte and secondary oocyte?
Primary oocytes are diploid cells that have undergone DNA replication but are arrested in prophase I of meiosis, whereas secondary oocytes are haploid cells resulting from the division of primary oocyte after completing meiosis I. Secondary oocytes are arrested in metaphase II and are released during ovulation, while primary oocytes are present in the ovaries prior to puberty.
How do plants that lack a secondary growth increase girth?
Plants that lack secondary growth increase girth through primary growth, which involves cell division and expansion in the primary tissues of the plant (such as the primary xylem and phloem). These plants rely on the activity of their apical meristems to produce new cells that allow for a limited increase in girth over time.
Why is it essential that the primary stain and the counterstain be of contrasting colors?
Using contrasting colors for the primary stain and counterstain helps differentiate between different types of cells or structures under the microscope. This contrast makes it easier to visualize and distinguish between different elements within a sample, aiding in the identification and analysis of the specimen.
What is the difference between primary and secondary nondisjunction?
Primary nondisjunction occurs during meiosis when homologous chromosomes fail to separate, leading to abnormal chromosome numbers in daughter cells. Secondary nondisjunction happens later in development when a previously normal cell undergoes a mitotic division with faulty chromosome separation, resulting in abnormal chromosome numbers in daughter cells.
Do growth plates lie between primary and secondary ossification centers?
Yes, growth plates (also known as epiphyseal plates) are located between the primary and secondary ossification centers in long bones. They allow for longitudinal bone growth by producing new cartilage cells that are eventually replaced by bone tissue. Once growth is complete, the growth plates ossify and the bone stops growing in length.
