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What kind of molecules are moved in active transport?
Active transport requires energy, unlike passive transport. The carrier proteins in active transport act as a "pump" ( fueled by ATP) to carry/attach themselfves to useful proteins for the cell.
Does the smooth ER synthesise proteins?
No, the smooth endoplasmic reticulum (ER) does not synthesize proteins. It is involved in lipid metabolism, detoxification of drugs and toxins, and calcium storage and release. Protein synthesis primarily occurs in the rough ER, which is covered in ribosomes.
What organelle synthesizes steroids in the ovary and stores calcium in muscle cells?
Smooth ER
What does calcium pumps do?
Calcium pumps are membrane proteins that actively transport calcium ions (Ca²⁺) out of cells or into the sarcoplasmic reticulum in muscle cells, maintaining calcium homeostasis. They play a crucial role in various physiological processes, such as muscle contraction, neurotransmitter release, and cellular signaling. By regulating intracellular calcium levels, these pumps ensure that calcium is available when needed while preventing excessive accumulation, which could be harmful to the cell.
What are two things synthesized by skin?
Skin synthesizes vitamin D when exposed to sunlight, which helps regulate calcium and phosphorus levels in the body. Skin also synthesizes a protein called keratin, which provides strength and protection to the outer layer of the skin.
What kind of molecules are moved in active transport?
Active transport requires energy, unlike passive transport. The carrier proteins in active transport act as a "pump" ( fueled by ATP) to carry/attach themselfves to useful proteins for the cell.
Does the smooth ER synthesise proteins?
No, the smooth endoplasmic reticulum (ER) does not synthesize proteins. It is involved in lipid metabolism, detoxification of drugs and toxins, and calcium storage and release. Protein synthesis primarily occurs in the rough ER, which is covered in ribosomes.
What organelle synthesizes steroids in the ovary and stores calcium in muscle cells?
Smooth ER
How does the integumentary system contribute to bone formation?
Your skin synthesizes vitamin D, which assists with calcium absorption. This calcium is part of the bone structure.
What is the function of a endplasmic reticulm?
The endoplasmic reticulum (ER) is an essential organelle in eukaryotic cells, primarily involved in the synthesis and transport of proteins and lipids. It consists of two types: the rough ER, which is studded with ribosomes and synthesizes proteins destined for secretion or for use in the cell membrane, and the smooth ER, which is involved in lipid synthesis, detoxification, and calcium storage. Additionally, the ER plays a crucial role in maintaining cellular homeostasis and facilitating communication between different organelles.
What does an animal cells smooth er do?
The smooth ER stores calcium and synthesizes lipids, (makes fats).
How do transport proteins work?
They are used in Facilitated Diffusion, helping to transport ions, macromolecules, and other substances incapable of entering a cell by themselves to cross through the plasma membrane of the cell.
What increases reabsorption of Ca plus 2 by the kidneys?
Reabsorption of calcium ions (Ca²⁺) by the kidneys is primarily increased by parathyroid hormone (PTH), which promotes calcium reabsorption in the renal tubules. Additionally, vitamin D enhances calcium reabsorption by increasing the expression of calcium transport proteins. Other factors, such as low serum calcium levels and certain renal conditions, can also stimulate increased reabsorption of calcium.
What does calcium pumps do?
Calcium pumps are membrane proteins that actively transport calcium ions (Ca²⁺) out of cells or into the sarcoplasmic reticulum in muscle cells, maintaining calcium homeostasis. They play a crucial role in various physiological processes, such as muscle contraction, neurotransmitter release, and cellular signaling. By regulating intracellular calcium levels, these pumps ensure that calcium is available when needed while preventing excessive accumulation, which could be harmful to the cell.
What is a calbindin?
A calbindin is any of a class of calcium-bonding proteins first described as the vitamin D-dependent calcium binding proteins in the intestine and kidney.
The stomach contains chemicals that break down proteins carbohydrates calcium or vitamins?
Proteins
Does the smooth er transport proteins?
The smooth endoplasmic reticulum (SER) does not have ribosomes attached to it and only makes lipids. The rough endoplasmic reticulum (RER), on the other hand, does have ribosomes attached to it. The RER makes lipids as well but also helps transport the proteins made by the ribosomes attached to it.
