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What is heterogeneous parenchyma of the thyroid?
Heterogeneous parenchyma of the thyroid means that the basic cellular tissue of the thyroid gland does not have a uniform structure or composition. These can be either benign and/or malignant nodules in the thyroid.
What are the two general types of plant tissues?
Parenchyma and Sclerenchyma
What part of a plant has two layers and is located between the upper and lower epidermis?
parenchyma
What is the chemical difference between stroma and the cytoplasm?
A "stoma" is singular, whereas "stomata" is plural. Each guard cell is surrounded by two guard cells which are specialized parenchyma cells. Imagine that the guard cells are like two longish, curved balloons tied together at each end. (Each guard cell is like one of these balloons). If the balloons are both filled with air, they curve away from each other, creating a hole in the middle (a stoma). However, if the two balloons are not filled with air, they are pressed tightly together. (Guard cells are pressed tightly together by the surrounding parenchyma cells). During the day, sunlight causes the chloroplasts within the guard cells to produce sugar. (Guard cells contain more chloroplasts than surrounding parenchyma cells). Sugar builds up within the guard cells. By osmosis, water is drawn into the guard cells from the surrounding parenchyma cells, causing the guard cells to swell and close the stomata. This prevents water loss from the leaf during the heat of the day. At night, the sugar is used up, the water within the guard cells passes out of the guard cells, and the stomata open for transpiration and gas exchange: Carbon dioxide, oxygen and water vapour pass in and out of the leaves through the stomata. (Most stomata are found on the leaves of most plants, though cactus have them on their stems - because the leaves of cactus are the needles).
What are two primary agents of cellular communication?
hormones and chemicals made by nerve cells...option 4
What are two structures in a plant's leaf?
Stomata and parenchyma cells, columnar ans spongy
What are two structure in a plant's leaf?
Stomata and parenchyma cells, columnar ans spongy
What is a parenchyma cell?
A parenchyma cell is the most common type of plant cell. It stores starch, oils, and water for the plant. You can find parenchyma cells throughout a plant. These cells have thin walls and large water-filled vacuoles in the middle. Photosynthesis occurs in green chloroplasts within parenchyma cells in leaves. Both chloroplasts and colorless plastids in parenchyma cells within roots and stems store starch. The flesh of many fruits we eat is also made of parenchyma cells. Parenchyma cells are sometimes thought of as the least specialized of plant cells, but they have one very special trait, the ability to divide throughout their entire lives. Oh, the parenchyma cell, as it says at the top of this answer, "is the most common type of a plant cell..." well, what are the other cells, I'll tell ya', a parenchyma cell is one of three of the basic plant cell types, along with collenchyma and sclerenchyma, you should check them out, as they are cousins in this topic.
What two types of tissue cells can make food?
Palisade and spongy parenchyma in the leaves
Name two specialised animal cell and one specialised plant cell?
1. Parenchyma Cells. These cells are the most general of plant cells. They consist of thin flexible cell walls. They contain a large central vacuole and can carry out most of the metabolic functions of the plant. Mesophyll cells of the leaf are parenchyma cells. The fleshy tissue of most fruits also contain much parenchyma.2. Collenchyma Cells. These cells have a much thicker primary wall than the parenchyma cell. Grouped in strands or cylinders they support young plants. -3. Palisade Cells. These cells contain lots of chloroplasts, which absorb light energy for photosynthesis.
What two sources do cells get their primary energy?
Glucose and triglycerides
What is heterogeneous parenchyma of the thyroid?
Heterogeneous parenchyma of the thyroid means that the basic cellular tissue of the thyroid gland does not have a uniform structure or composition. These can be either benign and/or malignant nodules in the thyroid.
What are the two general types of plant tissues?
Parenchyma and Sclerenchyma
What are the names of the two cells in your blood?
The two primary cells in blood are the red blood cells (erythrocytes) and the white blood cells (Leukocytes). Platelets (Thrombocytes) are a third kind of blood cell.
Two primary agents of cellular communication are?
isn't this from the January 2008 regents?Two primary agents of cellular communication are hormones and chemicals made by nerve cells.
What are two ways cells can differ?
1.They look different.2.They have different jobs.
What part of a plant has two layers and is located between the upper and lower epidermis?
parenchyma
