The element needed for cellular respiration is oxygen. Oxygen is essential in the final stage of cellular respiration, the Electron Transport Chain, where it acts as the final electron acceptor. The absence of oxygen would lead cells to resort to anaerobic respiration that yields less energy.
The element needed for cellular respiration is oxygen. Cellular respiration is a process by which cells break down glucose and other molecules in the presence of oxygen to produce energy. The process can be broken down into three stages: Glycolysis, Krebs Cycle (Citric Acid Cycle), and the Electron Transport Chain. Oxygen plays a crucial role in the final stage, the Electron Transport Chain, where it acts as the final electron acceptor and combines with the hydrogen ions to form water.
Without oxygen, the Electron Transport Chain cannot occur. If oxygen is not available, cells may resort to an alternative method known as anaerobic respiration, or fermentation, but this produces significantly less energy. Hence, oxygen is a vital element required for efficient cellular respiration.
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Answer:
Describes ecosystem homeostasis
Explanation:
b. coral reefs
c. rivers
d. ponds
B. coral reefs because marshes, rivers and ponds have nothing to do with the ocean ecosystem.
b. osmosis.
c. exocytosis.
d. phagocytosis.
Answer:
Option A- It allows for genetic variation among organisms.
Meiosis is important for organisms since it allows for genetic variation among organisms.
Further Explanation:
Mitosis and meiosis are two different types of cell division. Mitosis produces two daughter cells which are identical to each other. While in meiosis “four haploid” daughter cells are produced. It is a highly systematized cell division process as the spore or gamete produce must comprise one member of each homologous pair of the chromosomes. The crossing over results in genetic exchange between the non-sister chromatids of “homologous chromosomes”. Meiosis plays a significant role during the alternation of generation in plants and acts as a bridge between the sporophyte stage and gametophyte stage. During meiosis cell division, haploid gametes or spores are produced whereas mitosis produces daughter cells which are genetically similar to each other. During meiosis the pairing of homologous chromosomes occurs by synapsis which separate during anaphase.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Mitosis and Meiosis
Keywords:
Mitosis, meiosis, homologous pair, haploid, gametes, spores, four, synapsis, gametes, daughter cell, plant, cell division, crossing over.