A few Biology Olympiad questions, is the Biology Olympiad League a national test paper

1 b Because blue-violet light absorbs the most at the same light intensity

2 A potato tubers, beet tubers, although lactic acid is produced due to the peculiarities of enzymes, the product is still alcohol when anaerobic respiration is carried out in other parts of potatoes and beets. Potato tubers are what we eat

3c telomeres are short repeats at one end and do not code for proteins, you should know that polymerase is in 3'-OH then there will be a small gap on the edge of the lagging strand and on the edge of the lead strand to eliminate the gaps created by the RNA primers, and each copy will be a little shorter. Shortening telomeres avoids damaging the genes encoding the protein

I'm a physics student, but I know the answer to the first question.

The pigment in chloroplast absorbs blue-violet light, so the effect of blue-violet light will be a little higher, about what light the pigment absorbs, you can check the book, and you will soon know the answer!

The answer to the first question may be wrong, under the same light conditions, providing white light for green plants is the most beneficial for their photosynthesis, there are more products of photosynthesis, it should be a double light synergy, the pigments in the chloroplast absorb blue-violet light, but also absorb other light colors (such as red light) for photosynthesis. There is also the need to consider other pigments in the plant, absorbing the light color for photosynthesis.

The second question is very simple, it should be potatoes in aerobic respiration.

The third question is the concept of the book.

1. Green plants have the highest absorption rate of red light and blue-violet light, while green light is the lowest, and the absorption rate of blue-violet light is greater than that of red light. So choose B!

2. First of all, one thing is certain, potatoes are anaerobic respiration in the second week, and we know that the anaerobic metabolic end products of sugar in animals are water and lactic acid, and the anaerobic metabolic end products of sugar in plants are water and ethanol.

3. The function of telomeres is to stabilize the end structure of chromosomes, prevent interchromosome end connections, and compensate for lagging chains5'Gaps created by the ends after the elimination of RNA primers. Because it is to make up for the vacancy, it is natural to prevent it from becoming shorter, so choose C!

Which book?

1. It should be blue-violet light, if it is white light, then some of the light cannot be absorbed.

2. Plants still produce more ethanol.

Summary. No. The Biology Olympiad is a national competition, not a test paper. Participants need to prepare a series of biological knowledge and apply this knowledge to solve problems in the competition to get the highest score.

No. The Biology Olympiad is a national competition, not a test paper. Contestants are required to prepare a series of biological knowledge and apply this knowledge to solve problems in the competition.

Can you elaborate on that a little bit more?

The Biology Olympiad League is not a national test paper, but is organized by various provinces, municipalities and autonomous regions, and each province, municipality and autonomous region has a different test paper. Problems may occur because the test taker does not have a deep understanding of the test content, or the test time is not enough, or the test environment is not quiet enough, or the state of mind is not stable enough during the test, etc. Workaround:

1.During the preparation period, it is necessary to deeply understand the content of the test, practice more, and improve your answering ability. 2.

Before the exam, you should prepare well and arrange the exam time in advance to avoid running out of time for the exam. 3.During the exam, you should keep quiet and try to avoid external interference, so as not to affect the effect of the exam.

4.During the exam, you should maintain a good attitude, don't be nervous, don't panic, so as not to affect the efficiency of answering questions. Personal Tips:

1.It is necessary to be fully prepared for the chaos, practice more, and improve your ability to answer questions. 2.

Maintain a good attitude, don't be nervous, don't panic, so as not to affect the efficiency of answering questions. 3.Keep quiet and try to avoid outside distractions so as not to affect the effectiveness of the test.

The Biology Olympiad is a biological knowledge competition organized by various provinces, municipalities and autonomous regions, aiming to improve students' biological knowledge level, cultivate students' scientific literacy, stimulate students' interest in learning, and improve students' innovation ability.

1. Error In eukaryotes, DNA and histones combine to form chromosomes.

2. Once the high symmetry and tight rigid structure are destroyed, the DNA molecule is denatured, and the viscosity will decrease.

3. False, it is said that nucleic acids have phosphate groups that will react with alkali, but DNA is a double helix structure, which is relatively stable under dilute alkali, and RNA is a straight chain and will be hydrolyzed rapidly.

4. Yes can be said to be similar but not identical, the DNA double helix is 2 chains, and the protein-helix is just one strand, in which hydrogen bonds play an indispensable role.

5. The pentose plane is parallel to the long axis of the DNA double helix, while the base plane is almost perpendicular to the long axis.

6. The presence of introns is indeed one of the characteristics of eukaryotic genes, thus ensuring the diversity of genes.

Fourth, the main reason for the stability of the DNA molecular structure is the base packing force.