Every cell in the body has a nucleus. The nucleus is the largest organelle and is contained within a membrane. The nucleus contains the body’s genetic material, which directs the activities, like the brain of the cell. This is built from DNA and proteins called histones coiled together forming a fine network of threads called chromatin. When under the microscope the most prominent part of the cell is the nucleus. The most visible structure within the nucleus is the nucleolus, which is where rRNA is made and ribosomes are assembled. The nucleus has a double membrane which has large pores, 40-100um in diameter. That makes it easier for larger molecules such as RNA to pass into the nucleus. The most visible structure within the nucleus
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They are described as the ‘powerhouse’ of the cell. They are organelle that takes in nutrients, breaks them down, and creates energy for the cell. This is known as a cellular respiration. Mitochondria are described like a sausage-shaped structure. It has a double membrane and it controls what enters and exit’s the mitochondria. It has the outer membrane and the inner membrane. Outer membrane are described smooth and is composed of equal amounts of phospholipids and proteins. The inner membrane is more complex and is folded into a number of folds called cristae. It increases the available surface area where respiratory processes take place. The rest is called the matrix. In length the mitochondria varies from 1um to 10um and in width from 0.25um to 1.0um. (MAGLOIRE, K …show more content…
The region of the ER that is studded with ribosomes is called the rough ER (RER). Proteins generated in the rough ER are trafficked to or across the plasma membrane. The region of the ER that lacks ribosomes is called the smooth ER (SER). The smooth ER makes lipids, hormones, and steroids and breaks down toxic chemicals. Rough ER looks like sheets or disks of bumpy membranes while smooth ER looks more like tubes. Rough ER is called rough because it has ribosomes attached to its surface. (MAGLOIRE, K 2016)
They are described as the ‘powerhouse’ of the cell. They are organelle that takes in nutrients, breaks them down, and creates energy for the cell. This is known as a cellular respiration. Mitochondria are described like a sausage-shaped structure. It has a double membrane and it controls what enters and exit’s the mitochondria. It has the outer membrane and the inner membrane. Outer membrane are described smooth and is composed of equal amounts of phospholipids and proteins. The inner membrane is more complex and is folded into a number of folds called cristae. It increases the available surface area where respiratory processes take place. The rest is called the matrix. In length the mitochondria varies from 1um to 10um and in width from 0.25um to 1.0um. (MAGLOIRE, K …show more content…
The region of the ER that is studded with ribosomes is called the rough ER (RER). Proteins generated in the rough ER are trafficked to or across the plasma membrane. The region of the ER that lacks ribosomes is called the smooth ER (SER). The smooth ER makes lipids, hormones, and steroids and breaks down toxic chemicals. Rough ER looks like sheets or disks of bumpy membranes while smooth ER looks more like tubes. Rough ER is called rough because it has ribosomes attached to its surface. (MAGLOIRE, K 2016)