Which structure in the cheek cells did you observe that separates and protects the cell from the environment?
Intercellular Junctions
| Cell Component | Function |
|---|---|
| Plasma membrane | Separates cell from external environment; controls passage of organic molecules, ions, water, oxygen, and wastes into and out of the cell |
| Cytoplasm | Provides structure to cell; site of many metabolic reactions; medium in which organelles are found |
What organelles or cellular structures were common to all the different organisms looked at with the microscope?
Ribosomes are the organelles that are common to all the different organisms looked at with the microscope.
Why did you not see chloroplasts in the onion root cells quizlet?
Why did you not see the chloroplasts in the onion cells? The roots are underground and are not exposed to light. Therefore, they do not need chloroplast.
What is the function of the cell wall in the onion cell?
Answer and Explanation: The cell wall of an onion cell functions as a structural part of the cell, offering support and protection for the fluids and organelles inside.
Which cellular structure did you observe in the spirogyra but not in the other cells?
The spirogyra have a chloroplast which conducts photosynthesis.
When observing the onion root no chloroplasts were observed within the cells Why?
The clear epidermal cells exist in a single layer and do not contain chloroplasts, because the onion fruiting body (bulb) is used for storing energy, not photosynthesis. Each plant cell has a cell wall, cell membrane, cytoplasm, nucleus, and a large vacuole.
What organelle is usually visible in cells when viewed with a microscope?
Note: The nucleus, cytoplasm, cell membrane, chloroplasts and cell wall are organelles which can be seen under a light microscope.
When a cell is observed using a compound light microscope which of the following structures will be seen?
The light microscope is used to magnify the structures of certain organelles like cell walls, vacuoles, cytoplasm, chloroplasts, nucleus and cell membrane. A compound light microscopes use lenses and light to magnify cell parts.
Where in the cell does photosynthesis which creates the biological molecule used for fuel occur?
In plants and algae, which developed much later, photosynthesis occurs in a specialized intracellular organelle—the chloroplast. Chloroplasts perform photosynthesis during the daylight hours. The immediate products of photosynthesis, NADPH and ATP, are used by the photosynthetic cells to produce many organic molecules.
What color changes did you observe when you add Benedict’s solution to water and heated quizlet?
What color changes did you observe when you added Benedict's solution to water and heated it? It turned from colorless to blue after the addition of the benedict's solution, but stayed blue after it was heated.
What is vacuole function?
Vacuoles are membrane-bound organelles that can be found in both animals and plants. In a way, they're specialized lysosomes. That is to say that their function is really to handle waste products, and by handle, mean take in waste products and also get rid of waste products.
What is the function of the vacuole in an onion cell?
Vacuole. Vacuoles contain the necessary water, ions and a range of organic molecules produced by the plant, in many cases including those for pigment, or chemicals that produce the distinctive scent or flavor of a plant. In onions, the vacuole is very large and distinct.
What organelles visible in Spirogyra are not visible in amoeba and paramecium?
what organelles visible in spirogyra are not visible in Amoeba and Paramecium? Choloroplast is visible in spirogyra and not visible in amoeba and paramecium.
How does reproduction in Spirogyra differ from reproduction in Chlamydomonas?
Summary – Chlamydomonas vs Spirogyra Chlamydomonas reproduces asexually by means of zoospores while spirogyra reproduces asexually by fragmentation. Moreover, Chlamydomonas reproduces sexually by the formation of gametes while spirogyra reproduces sexually by conjugation.
Which organelle causes the chloroplasts to be pushed to the edges of the highlighted cell?
You might also see that these chloroplasts are pushed toward the edges of the cell. This is because the majority of the cell is taken up by a large, liquid-filled structure called the central vacuole, surrounded by a membrane called the tonoplast.
How does a cheek cell look like under a microscope?
Cells from the cheek are a type of epithelial cell, similar to skin. They can be seen faintly even at 40x (scanning power), but the most dramatic images are at 400x where the nucleus is clearly visible as a dark spot in the center of the cell.
Can vacuoles be seen under light microscope?
A light microscope can be used to view and study the structure of a vacuole.
Which cell looks more clear when it is observed through a microscope Why?
In practical terms, bacteria and mitochondria, which are about 500 nm (0.5 μm) wide, are generally the smallest objects whose shape can be clearly discerned in the light microscope; details smaller than this are obscured by effects resulting from the wave nature of light.
Is vacuole visible under light microscope?
The light microscope is used to magnify the structures such as cell walls, vacuoles, cytoplasm, chloroplasts, nucleus and cell membrane of some organelles.
How does photosynthesis transform solar energy into the chemical energy of sugar molecules?
In photosynthesis, solar energy is harvested as chemical energy in a process that converts water and carbon dioxide to glucose. Oxygen is released as a byproduct. In cellular respiration, oxygen is used to break down glucose, releasing chemical energy and heat in the process.
When cells perform photosynthesis they transform energy from one form to another which of the following takes place during photosynthesis?
More than one answer may be correct. When cells perform photosynthesis, they transform energy from one form to another. Which of the following takes place during photosynthesis? Chemical potential energy is stored in the bonds of carbohydrate molecules.
What color changes did you observe when you add Benedict’s solution to water and heated?
What color changes did you observe when you added Benedict's solution to water and heated it? It turned from colorless to blue after the addition of the benedict's solution but stayed blue after it was heated.
Why does a molecule of a disaccharide produce more carbon dioxide during fermentation than a molecule of a monosaccharide?
Disaccharides are able to produce more CO2 than monosaccharides because they are formed by two monosaccharides joined together. This means that they can be broken down, and as a result, disaccharides produce twice the amount of carbon dioxide. Describe the benefits and drawbacks of fermentation.
Do vacuoles store water?
The vacuole holds large amounts of water or food. Don't forge that vacuoles can also hold the plant waste products. Those waste products are slowly broken into small pieces that cannot hurt the cell. Vacuoles hold onto things that the cell might need, just like a backpack.
What is vacuole in animal cell?
A vacuole is a membrane-bound subcellular structure involved in intracellular digestion. Instead of the large “vacuolar” organelles that are found in plants and fungi, animal cells possess lysosomes that are smaller in size and are enriched with hydrolytic enzymes similar to those found in the vacuoles.
What is the function of vacuoles in animal cells?
A vacuole is an organelle that is found in many types of cells, including animal, plant, fungi, bacteria, and protist cells. The main vacuole function is to store substances, typically either waste or harmful substances, or useful substances the cell will need later on.
Which of the following is the function of vacuoles?
The important functions of vacuole include: Storage of salts, minerals, pigments and proteins within the cell. Isolate metabolic waste that might be harmful to the cell. Maintain turgor pressure.
What structures in amoeba and paramecium do not occur in plant cells?
How does shape and body consistency differ between Amoeba and Paramecium? Mitochondria, nuclei, and endoplasmic reticulum occur in plant cells. A Contractile vacuole and pellicle do not occur in plant cells.
Which of the following cell organelles regulates the entry and exit of molecules to and from the cell?
Cell membrane Which of the following cell organelles regulates the entry and exit of molecules to and from the cell? Sol: (c) Cell membrane.
Are green algae plants?
The "green algae" is a paraphyletic group because it excludes the Plantae. Like the plants, the green algae contain two forms of chlorophyll, which they use to capture light energy to fuel the manufacture of sugars, but unlike plants they are primarily aquatic.