Biology questions for junior high school, about single celled organisms.

1. The relationship between single-celled organisms and human beings: the bread we produce needs the role of yeast; Lactic acid bacteria can be used as a high-protein food and health supplement; Cyanobacteria can be used to detect water pollution; It can purify sewage; Ascaris, tapeworm and other internal parasites often endanger human health. (Fill in the single-celled organism on the horizontal line).

2. Contamination of seawater leads to eutrophication, which can lead to if this phenomenon occurs in freshwater. The danger is that they compete with other aquatic organisms for oxygen and nutrients, and the toxins released by toxic algae accumulate excessively, causing fish or death, and endangering fishery production.

I don't know ( mouth ) anymore

Alas, I'm only in my third year of junior high school, and I've almost forgotten it.

Anyway, the high school entrance examination is over

I can tell you that oh 1 is more important.

2 Fortunately, I don't take the test much, and it's usually a multiple-choice question.

Oops, I've done a lot of questions. But I've forgotten some of my knowledge, and now I want to vomit when I see a creature.

It's hard! 1.Yeast? , what kind of algae does it seem? , paramecium, malaria parasite, amoeba in dysentery.

2.Red tide? , oxygen, hypoxia, poisoning.

Let's go read the textbook!

1.Yeast spirulina grass? Cordyceps? Worm E. coli ? 2.Some single-celled organisms multiply in large numbers of red tides living space and oxygen ?

That's all it will be. Alas.

1. Yeast, chlorella, euglena, paramecium, malaria parasite, amoeba in dysentery.

2. Red tide, bloom, free oxygen, hypoxia, poisoning.

Books look for relationships with human beings, and they have them all. Use your own brain.

1. Bread needs the action of yeast;

Spirulina can be used as a high-protein food and health supplement;

2. Eutrophication of seawater: red tide;

Freshwater: blooms;

compete with other aquatic organisms for oxygen;

Causing fish poisoning or death by asphyxiation.

omg！That's it for the first year of biology, and the times are really advancing.

1. The relationship between single-celled organisms and human beings: the bread we produce needs the role of yeast; It can be used as a high-protein food and health supplement; E. coli can be used to detect water pollution; It can purify sewage; Mycoplasma, chlamydia and other internal parasites are common hazards to human health. (Single-celled organisms filled in the horizontal line) 2. Contamination of seawater leads to eutrophication, which can lead to if this phenomenon occurs in freshwater.

The harm of them is: competing with other aquatic organisms for oxygen, excessive accumulation of toxins released by toxic algae, can cause fish poisoning or death, and endanger fishery production.

Cell membrane: controls the exchange of substances between cells and the outside world.

Cytoplasm: the main site of life activities.

Nucleus: Stores genetic material.

Vacuoles: Plant cells often have large vacuoles that contain cellular fluid.

Chloroplasts: contain chlorophyll and are the main site for photosynthesis.

Cell wall: protects the cell and is made up of cellulose that gives the cell a certain shape.

I'm also in the first year of junior high school, and the teacher has talked about this answer, I don't know if it will help you!

1. Cell wall: support and protection.

2. Cell membrane: control the entry and exit of substances.

3. Cytoplasm: liquid and fluid.

4. Nucleus: stores and transmits genetic information.

5. Chloroplasts: places where photosynthesis takes place.

6. Vacuole: cell fluid.

1.One. 2.Four hungry rounds.

3。Biology is the study of the phenomena of life and the laws of the occurrence of life and the development of the cavity.

The answer is the relationship between living beings and their surroundings.

1 4 Phenomena of life Laws of biological activity.

1.It shows that the thyroid gland can speed up the body's metabolism in some way (in fact, it is secreting thyroxine). Without the thyroid gland, metabolism is slow, waste products accumulate, and therefore bloat.

2.The pancreas secretes pancreatic juice (to promote digestion), insulin (to lower blood sugar), and glucagon (to raise blood sugar).

I hope it helps, and besides, where is this junior high school question so difficult?

1. Promote oxidative decomposition.

2. Pancreatic juice.

The thyroid gland can secrete two thyroid hormones containing thyroxine, the main role of which is to promote the metabolism of substances and energy, blow into growth and development, as for the obesity that appears after removal....I think it will be sluggish after removal. The second problem is pancreatic juice.

1.The thyroid gland secretes hormones called thyroid hormones. Thyroid hormone can promote the oxidation of substances, increase glycogen decomposition and utilization, increase oxygen consumption, improve basal metabolic rate, increase thermogenesis, if the thyroid gland is removed, the puppy's energy metabolism is slow, resulting in the accumulation of substances in the body, nutrients are easily converted into fat, resulting in obesity in the puppy.

2.The secretion of the pancreas is called pancreatic juice. Contains a variety of enzymes that promote digestion. For example: trypsin, pancreatic lipase.