Plants make food<span> in their leaves. The leaves contain a pigment called chlorophyll, which colors the leaves green. Chlorophyll can </span>make food<span> the </span>plant<span> can use from carbon dioxide, water, nutrients, and </span>energy<span> from sunlight. This process is called photosynthesis.</span>
The Y chromosome likely contains 70 to 200 genes that provide instructions for making proteins. Because only males have the Y chromosome, the genes on this chromosome tend to be involved in male sex determination and development.
<h3>What is a chromosome?</h3>
A chromosome is a lengthy DNA molecule that contains all or a portion of an organism's genetic code. Histones, which serve as packing proteins for the majority of eukaryotic chromosomes, work with chaperone proteins to attach to and condense the DNA molecule in order to preserve the integrity of the molecule. These chromosomes exhibit a complicated three-dimensional structure that is crucial for controlling transcription.
Under a light microscope, chromosomes are typically only discernible during the metaphase of cell division (where all chromosomes are aligned in the center of the cell in their condensed form).
Prior to this, each chromosome undergoes a process known as chromosome duplication (S phase), during which a centromere connects both copies, forming either the X-shaped structure (if the centromere is situated equatorially) or a two-arm structure (if it is situated distally) depending on where it is situated.
To learn more about chromosome from the given link:
brainly.com/question/269366
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B ~ You cannot tell if someone was touching your hand
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I just took a test on this subject and the correct answer is D Tetrad.
Cell walls. This is a rigid layer made of cross-linked protein and sugars that surrounds the bacteria, holding it together and stopping it from exploding. The stain is called Gram's stain and is either purple (+ve) or pink (-ve). This distinction is used because it allows you to quickly cut the bacteria in half, and more importantly decide which antibiotic to give without actually having to grow the thing.