A fertile soil is best for growing plants
Answer:
Absolute age is the numeric age of a layer of rocks or fossils. Absolute age can be determined by using radiometric dating.
Explanation:
Absolute age is the numeric age of a layer of rocks or fossils. Absolute age can be determined by using radiometric dating.
PDK1 (pyruvate dehydrogenase kinase 1) is an enzyme which inactivates the pyruvate dehydrogenase by phosphorylating it using an ATP molecule<span>.
</span><span>PDK1 (phosphoinositide-dependent protein kinase-1) acts by catalyzing the phosphorylation of Thr-229 (threonine at position 229 in pyruvate dehydrogenase).
This phosphorylation is </span><span>synergistic</span> with the phosphorylation of C-terminal Thr-389, but this one is not done by the PDK1.
Unicellular organisms include bacteria, protists, and yeast. For example, a paramecium is a slipper-shaped, unicellular organism found in pond water. It takes in food from the water and digests it in organelles known as food vacuoles. Nutrients from the food travel through the cytoplasm to the surrounding organelles, helping to keep the cell, and thus the organism, functioning. Multicellular organisms are composed of more than one cell, with groups of cells differentiating to take on specialized functions. In humans, cells differentiate early in development to become nerve cells, skin cells, muscle cells, blood cells, and other types of cells. One can easily observe the differences in these cells under a microscope. Their structure is related to their function, meaning each type of cell takes on a particular form in order to best serve its purpose. Nerve cells have appendages called dendrites and axons that connect with other nerve cells to move muscles, send signals to glands, or register sensory stimuli. Outer skin cells form flattened stacks that protect the body from the environment. Muscle cells are slender fibers that bundle together for muscle contraction. The cells of <u>multicellular</u> organisms may also look different according to the organelles needed inside of the cell. For example, muscle cells have more mitochondria than most other cells so that they can readily produce energy for movement; cells of the pancreas need to produce many proteins and have more <u>ribosomes</u> and rough <u>endoplasmic</u> <u>reticula</u> to meet this demand. Although all cells have organelles in common, the number and types of organelles present reveal how the cell functions.
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Answer:
Those spots are called maria, from the Latin word for sea, because early astronomers mistakenly thought they were lunar seas (they're actually volcanic plains). The smooth and dark maria cover 17 percent of the surface of the moon. Almost all of them are visible from Earth
Explanation:
