基础知识竞赛（Basic knowledge contest）.docVIP

基础知识竞赛（Basic knowledge contest） Biology competition quiz 100 minutes, 90 minutes A single choice: every day (1 points, 40 points. Please write your answer in the corresponding position of the answer sheet 1., in the absence of drastic changes in the environment, species generally do not die out because the organisms have A. hereditary B.; adaptive C.; metabolism; D.; reproduction 2. protein and biuret reagent reaction of what color A. brick red, B., chrysanthemum yellow, C. purple, D. blue The main feature of 3. cell differentiation is different from that of cell increment Changes in the number of A. cells and changes in B. cell totipotent Changes in C. cell types, D. cell volume 4. molecules of two amino acids condense into two peptides and form a molecule of water. The oxygen in this water molecule comes from A. C.R based D. B. carboxyl amino peptide There are 5. production of onion root tip mitotic with gentian violet solution often used 0.01g/ml staining properties and cell stain in the structure are easy to be dyed A. is neutral, chromosome B. acidic and cell membrane C. alkaline, chromosome D. alkaline, cell membrane 6. in a plant cell, there are 4 chromosomes, then the chromosomes in the prophase, metaphase, anaphase and end of mitosis are respectively A.4, 4, 4, 4, B.4, 8, 8, 4, C.8, 8, 8, 4, D.4, 4, 8,, 4 7., there is a kind of enzyme washing powder on the market, that is, adding a small amount of alkaline protease in the washing powder, and its catalytic activity is very strong. The clothes in the sweat, blood and human emissions of protein hydrolysis can meet it, are removed. The following clothes should not be washed with enzyme detergent The cotton wool and acrylic fabric, the silk fabric and polyester fabric and nylon fabric A. 4 B. 3 4 5 1 2 4 5 6 C. D. 2. 8. when the plant is under different conditions of photosynthesis, the amount of intermediate products is shown as shown. What follows is correct in the following judgments The A. curve a can indica