A placebo is kind of a "fake" treatment but, typically the person receiving a placebo is unaware it has no medical effect on them so they believe they are feeling better. For example, a lot of anxiety meds are placebos and people don't know so their brain tricks them into thinking they are feeling less anxious. This could be used in experiments where a group believes they are affected to see how they react
- Rough Endoplasmic Reticulum.
- Chloroplast.
- Cell wall.
- Mitochondria.
- Vacuole.
- Membrane
- Golgi Apparatus.
- Nucleus
- Nucleolus.
The cell in the diagram is a plant cell because it has chloroplasts and a cell wall.
There are two types of cells animal cells, which are the ones that humans and animals have, and plant cells, which are the ones that plants and trees have. They share some organelles, but they also have some that are specific to each type.
The plant cell parts in the picture are:
- Rough Endoplasmic Reticulum: it is where the ribosomes are. The synthesis of proteins happens there.
- Chloroplast: it is an organelle-specific of plant cells. They are in charge of photosynthesis.
- Cell wall: it is only present in plant cells. It surrounds the membrane.
- Mitochondria: It is the place that generates the energy that the cell needs.
- Vacuole: they are bigger in cell plants than in animal plants. It has many functions, but one is to store water.
- Membrane: it draws the limits of the cell.
- Golgi Apparatus: it is the place where proteins go to be distributed.
- Nucleus: it contains DNA, and it has a membrane around it.
- The nucleolus: is the larger part of the nucleus. It is in contact with the endoplasmic reticulum.
To sum up, the plant cell has a bigger vacuole than the animal cell; it also has chloroplasts and a cell wall, which are not present in the animal cell.
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That these are the process of photosynthesis.
Salivary amylase will be active for only an hour or so because the optimum pH for activity of amylase is about 6.7–7.0 which is available in the mouth but the pH of the stomach is acidic around 1-2 due to which the amylase enzyme becomes inactive in short-time.
The lingual lipase enzyme is present in the saliva but isn't active until reaching the stomach because this enzyme is acid stable and works efficiently in the stomach, not in the mouth.
Amylase enzyme is secreted in the mouth and is responsible for the breakdown of starch in food into sugars and it starts acting as soon as we put food in the mouth whereas Lingual lipase enzyme is secreted along with saliva but it is not active in the mouth rather its activity starts in the stomach which is responsible for the degradation of triacylglycerol molecules.
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I would say that active transport is the answer because it's from LOW concentration to HIGH concentrations, so it's going against the concentration gradients.