The endoplasmic reticulum. Those with ribosomes are called "rough" without are called smooth.
tomas15 says: endoplasmic reticulum,
yet another answer to help people of the world cheat on their homework ;)
Endoplasmic Reticulum (ER)
Endoplasmic Reticulum
Endoplasmic Reticulum
endoplasmic reticulum
endoplasmic reticulum
believe it or not, mucous membranes secrete mucous. It helps protect the respiratory system (or whichever system the mucous membrane you're referring to is in).
diffusion
The Liver, Kidneys, the Endocrine System, Autonomic Nervous System and Hypothalamus are responsible to maintain Human Homeostasis.
Yes, the lysosomes provide the material which helps break down the plasma membrane and cytoplasm of the ova, allowing the sperm to enter the egg for fertilisation.
A waxy barrier in plant roots typically refers to the presence of a specialized layer of cells or substances that have a waxy or hydrophobic (water-repellent) nature. This waxy layer is often referred to as the "Casparian strip" and is found in the endodermis, a tissue layer in the root that surrounds the vascular cylinder. The main function of the waxy barrier, or Casparian strip, is to regulate the movement of water and nutrients into the plant through the roots. It acts as a selective barrier that prevents the passive movement of water and dissolved substances between cells, forcing them to pass through the cell membranes and into the cytoplasm before entering the vascular system. This barrier is crucial for maintaining proper nutrient uptake and preventing harmful substances from entering the plant. It ensures that the plant has control over what enters its vascular system, allowing it to selectively absorb beneficial nutrients while excluding potentially harmful elements. In essence, the waxy barrier in plant roots helps maintain the plant's health by regulating the passage of water and nutrients, ensuring a controlled and efficient uptake process.
Membranes in a cell helps in the exchange of substances in between the cytoplasm of the cell and the environment. Through this various substances such as enzymes and proteins created in the cells and oxygen needed for cellular respiration is transported and gained through the surrounding environment.
believe it or not, mucous membranes secrete mucous. It helps protect the respiratory system (or whichever system the mucous membrane you're referring to is in).
It helps the amount of substances that enters the cell through or via when consuming food. it also helps control the growth of the cell, growth in term of production or reproduction of RNA.
The Circulatory System :)
The Circulatory System :)
it helps them when they are swimming.
because of its flexibility its allows the nessecery substances to pass through it.
Channel proteins take specific substances across cell membranes. Molecules passing through the membrane by channel protein is called mediated transport. To transport the substances, the channel protein must be embedded in the total cell membrane.
There are two membranes in a mitochondrian. One is on the outside and the other is folded in the middle which helps in production of ATP
diffusion
carbohydrate cells
Muscle motion in your digestive system called Peristalsis helps the food to travel through your digestive system.