The nuclear envelope, which separates the nucleus from the cytoplasm, is actually a double-walled membrane. The nuclear membrane also has pores, which allow materials to pass in and out of the nucleus.Answer and Explanation: The nucleus is often called the control center or brain of the cell....
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The nucleus is an organelle that contains the genetic information for that organism. In an animal cell, the nucleus is located inthe central region of the cell. In a plant cell, the nucleus is located more on the periphery due to the large water-filled vacuole in the center of the cell....
the cell makes a copy of the gene, using not DNA but ribonucleic acid, orRNA. RNA shares a similar structure to DNA, except it contains only one strand, rather than two — so it looks like just one half of a ladder. In addition, while RNA has three of the four nitrogen bases in ...
Your body is made up of 50 trillion cells. Cells come in many different varieties, with many different functions, but inside, almost every cell is a nucleus, containing 99.9% of your genes, and mitochondria, containing a few more genes. All told, you’ve nearly 20,000 genes, your genes...
About three quarters of the sun is hydrogen, which is constantly fusing together and creating helium by a process called nuclear fusion. Helium makes up almost the entire remaining quarter. ... Instead, the sun is composed of layers made up almost entirelyof hydrogen and helium. ...
to form structures calledchromosomes. Each chromosome contains a single DNA molecule, wrapped tightly around spool-like proteins called histones, which provide chromosomes their structure. Humans have 23 pairs of chromosomes, which are found inside each cell's nucleus, the control center of the cell...
A proton contains two “up” quarks and one “down” quark. A neutron contains two down quarks and one up. The nucleus is held together by the strong force, another fundamental force of the Standard Model. Just as photons carry the electromagnetic force, ...
One method, known aspronuclear transfer,uses two fertilized eggs, both fertilized with the father’s sperm: one egg from the mother, and one egg from a donor. Once eggs are fertilized, but before they start dividing, their nuclei are removed. The nucleus from the donor’s fertilized egg ...
The OS needs the code that makes up the kernel. Consequently, the kernel code is usually loaded into an area in computer storage that's protected so that it won't be overlaid with less frequently used parts of the OS. Kernel mode vs. user mode ...