Answer: Carbon Dioxide
Explanation: This deep, quick breathing changes the gas exchange in your lungs. Normally, you breathe in oxygen and breathe out carbon dioxide. But when you hyperventilate, the you breathe out more carbon dioxide than usual so that levels in your bloodstream drop.
Meristematic tissue and Permanent tissues are two examples of tissues found in the plant.
The bodies of plants, which are multicellular eukaryotic organisms, are made up of organs, tissues, and cells that each perform a highly specialized role.
Meristematic and permanent plant tissue systems exist. Meristematic cells, like animal stem cells, divide and grow the plant. Permanent tissue contains non-dividing plant cells.
Meristem cells quickly specialize and create permanent tissue. These cells have specific functions and cannot divide. Dermal, vascular, and ground tissue distinguish them.
Dermal tissue protects the plant and regulates gas exchange and water absorption. Ground tissue is the site of photosynthesis, provides a matrix for the vascular tissue, supports the stem, and stores water and sugars. Water, minerals, and carbohydrates are carried through vascular tissue.
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B: separation anxiety
C: separation shock
D: attachment shock
a. jaws
b. molars
c. beaks
Birds have beaks and not teeth.
All birds have some sort of bill or beak. Birds use their beaks to preen their feathers, build nests, and feed their young.
2. prophase
3. metaphase
4. telophase
Chromosomes attach to spindle fibres by their centromeres during metaphase of mitosis.
Further Explanation:
Interphase is the resting phase or metabolic phase of a cell where it prepares itself for the cell division process. Interphase comprises of sub-phases namely, Gap1 phase, Synthesis phase and Gap2 phase. G1 is the first gap phase where a cell grows larger in size and the cytoplasm volume increases as more organelles are produced. During Synthesis phase, the strands of DNA replicates. G2 is another gap phase in which the cell becomes much larger in size and this phase is followed by mitosis where cell division occurs.
Mitosis or somatic cell division is comprised of four phases which includes prophase, metaphase, anaphase and telophase. A somatic cell divides to give rise to two identical daughter cells where each cell contains exact copy of each chromosomes present in the parent cell. In the prophase, the envelope that covers the nucleus and nucleolus disappears and chromosomes become visible by forming two chromatids attached to centromere.
In the metaphase, chromosomes alignment at the metaphase plate occurs and spindle fibres attach to the centromere. Spindle fibres pull the chromatids away from the metaphase plate towards the opposite poles of the cell during anaphase. In the telophase, nuclear membrane reforms, chromosomes decondense and nuclear membrane reforms around each daughter nuclei. The cytokinesis is the final stage of cell division process where the parent cell is pinched off to result in two daughter cells.
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Answer Details:
Grade: High school
Subject: Biology
Chapter: Cell division
Keywords: Mitosis, prophase, metaphase, anaphase, telophase, interphase, cytokinesis, somatic cell, nucleolus, nucleus, centromere, chromatids, spindle fibres.
Explanation:
The lac operon
When lactose is present, bacteria need the enzymes to break it down. But if no lactose is present, bacteria do not need to waste resources making enzymes to break down a sugar that isn't there. Like a switch, the operon is turned on when the enzymes are needed.