A Biology Judgment Question Junior 2 Urgent Junior High School Biology Judgment Question

Wrong. The former sentence "Chlorophyll is able to absorb light energy" is true, but the latter sentence "provides the raw materials for photosynthesis." "It's wrong.

Because the raw materials for photosynthesis are water and carbon dioxide, chlorophyll is a part of chloroplasts, it can only absorb light energy to provide energy for photosynthesis, chloroplasts are the places, chlorophyll absorbs energy from light, and then the energy is used to convert carbon dioxide into carbohydrates.

Of course not

Chlorophyll absorbs light energy, but the raw materials for photosynthesis are water and CO2, which are not provided by chlorophyll.

Wrong. The raw materials are water and carbon dioxide.

Water is absorbed by the roots, and carbon dioxide is produced by respiration and inhaled by the stomata.

Wrong light and the raw material of the action is water carbon dioxide chlorophyll is the medium, light is the condition, and the energy provided is oxygen and sugar, so it is wrong.

Wrong. Because light energy is to provide energy to cells for photosynthesis.

Wrong. Raw materials and energy are not the same concept.

False: Chlorophyll absorbs light energy for light reaction, generates ATP, feeds energy for dark reactions, and provides h feedstocks are H2O and CO2

Right. Photosynthesis is divided into dark reactions and light reactions, and chlorophyll can produce reduced hydrogen when light reacts, helping dark reactions.

Yes, chlorophyll is produced when light reacts [h] and can provide energy for dark reactions.

1 False The bile secreted by the gallbladder is digestive juices, but there are no digestive enzymes.

2 Wrong The large intestine of a person can also absorb a part of water and inorganic salts.

3 False: Pancreatic juice and intestinal juice are not.

4 Wrong The appendix is in the right lower abdomen of a person.

5 pairs. 6 False The digestion of starch is related to the chewing of the teeth and the stirring of the tongue.

7 False There are no villous bulges on the surface of the large intestine.

1 Yes. 2 No.

3 False. 4 Lower right part.

5 Yes. 6 False.

7 False.

1.In the following experiments, it can be proved that the product of photosynthesis is starch (b).

a.The leaves were treated with iodine solution and turned blue bThe shading part of the leaf does not change blue.

Iodine turns blue when it encounters starch, but a does not prove that the starch is produced by photosynthesis.

2.Under normal circumstances, yellowed geranium leaves are used as experimental materials, and after decolorization with alcohol, iodine wine is added, and the leaves do not change blue, indicating that photosynthesis is not carried out normally, and the reason is lack (d).

a.Water bCarbon dioxide cLight DChlorophyll.

Decolorized, the chlorophyll is gone, and there are all three left.

3.The part of the carrot that sticks out of the ground often turns green, which illustrates (c).

a.Chloroplasts contain chlorophyll bPhotosynthesis can make starch.

c.Chlorophyll can only form d. when exposed to lightChloroplasts are capable of photosynthesis in the presence of light.

When he saw the light, he turned green. This one is relatively simple.

4.Many leaves on the same branch are arranged in a mosaic pattern, which is called leaf mosaic. This phenomenon in plants is beneficial to (b).

a.Make the most of the space bMake the most of the sunGrowth of leaves dThe leaves are evenly distributed on the branches.

b。There's not much to say about that.

a.Early morning meadow bMeadow in the afternoon cEarly morning forest dForest in the afternoon.

6.The best way to preserve the corn ears recovered from the vegetable field is ( ).

a.Pile up b. indoorsSuspend c. when cookedKeep it in the open air dHang under the eaves.

I choose D. I don't know what you're learning right now.。。。 Let's talk about it.

7.1kg of mung beans can produce 6kg of sprouts, and the content of organic matter in the process will be ( ).

a.Add bReduce cNo change DFirst decrease, then increase.

b。There has been no photosynthesis, no increase in organic matter. The added weight is moisture. Whereas, plant respiration causes a decrease in organic matter.

8.It has been found that the same plant absorbs less water during the day than at night, and the main reason for this is ( ).

a.No photosynthesis at night bTranspiration decreases at night.

c.The respiration is strong at night and produces more waterTranspiration is not performed at night.

b This is not explained.

9 Tie a wire to the trunk of a small tree to dry clothes, and over time it will form a nodule because of the damage ( ).

a.Phloem bXylem CCambium DPith.

Choose A. Ask again if you have questions.

1a.The leaves were treated with iodine solution and turned into blue 2cLight 3DChloroplasts are capable of photosynthesis in the presence of light.

4a.Make the most of the space 5 cEarly morning forest 6dHang under the eaves.

7d.First decrease and then increase 8dTranspiration is not performed at night 9aPhloem.

No, it's still included--

What are the effects of water on the distribution of plant growth?

The upstairs are all nice.

As for why human blood is dark red after clotting, it is actually not just the color of cells or cell death. During wound scarring, blood cells release some clotting factors and fibrinogen, which cause the blood that comes into contact with the air (i.e., the wound site) to become viscous, increasing the viscosity of the blood and eventually leading to scarring.

In addition, due to the differences between human blood and genetic diseases, the color of blood and scars flowing from different individuals or different parts of the same body are very different.

Because the blood cells are at the bottom of the test tube, the bottom of the test tube is not in contact with the air and is in a state of hypoxia, and hemoglobin is characterized by the fact that it is easy to separate from oxygen in places with low oxygen concentration, so it is dark red.

I'm late, the one on it is good. As for your second question - the outside of the pig blood clot is bright red because it can come into contact with the air and always keep the blood cells fresh, and the cells inside the blood clot cannot contact the air and will die before the outside, so it is dark red.

It's amazing. I don't dare. You can think so deeply about junior high school biology questions!