-
The seahorse is a type of fish that taxonomically belongs to the class Bony Fishes. It breathes with gills and has vertebrae, dorsal, pectoral and caudal fins, and is named because its head resembles a horse's head.
-
Seahorse, ichthyidae, sea lombactera, a general term for the genus Hippocampus. The seahorse is named because its head resembles a horse's head, but it is interesting to note that it is a peculiar and precious small fish in the shallow sea sea of the order Sea Dragon, belonging to the family Hydrosauridae, the head is flattened, the head has 2 nostrils on each side of the head, the head is at right angles to the trunk, the chest and abdomen are protruding, composed of 10 12 bone rings, the tail is slender, with four edges, often curled, the whole body is completely wrapped by membranous bone sheets, with a spinless dorsal fin, no pelvic fin and caudal fin. The male hippocampus has a nursery sac on the ventral surface, in which the eggs are laid for hatching, and can reproduce for 2-3 generations a year.
-
After searching, color blindness is an X chromosome negative genetic disease, and the wife has color blindness, which means that the color blindness genes on both X chromosomes of the wife are negative, and the husband has no color blindness, indicating that the husband has no color blindness gene, because if the husband has the color blindness gene, the husband must be color blind. At this time, look at the child, the title says, the birth is a daughter, then there must be an X chromosome from the father, and the father is not color blind in the title, indicating that the X chromosome does not carry the color blindness gene, and the chromosome from the mother carries the color blindness gene, and because color blindness is a negative genetic disease, the father's biological daughter will not be color blind. On the other hand, if the mother wants to give birth to a blind daughter, the father must be a colorblind male.
Emm, speaking of which, the reason for the divorce is not clear.
-
Personally, I think I choose B
First of all, the concentration of the solution in the pig's bladder is greater than that of the outside, so the solvent from the outside will enter the inside. Because as water enters it from the semi-permeable membrane (pig bladder), the concentration of the sucrose solution in it also decreases, and when the concentration is closer to the concentration of the external sucrose solution, the rate of water entry also decreases, that is, the slope of the curve decreases.
-
b, low concentration environment, external moisture in, internal concentration is gradually diluted, the rate slows down reflected in the image.
The slope becomes smaller when it goes up, and finally approaches zero infinitely.
-
Due to the high concentration of sucrose solution in the bladder, it continuously absorbs water through osmosis, so that its weight increases, its concentration decreases, and the pressure continues to increase, preventing water molecules from entering, and finally the water enters and exits in balance, and the weight remains relatively stable.
Answer: B
-
Pig bladder is semi-permeable. Sucrose cannot be passed. Only water can pass through. So it's going to get heavier and heavier.
After a while, there is not much difference in concentration. The speed is also slower.
Petri dishes with diabetics.
Diabetic patients have a blood sugar higher than any time. Western medicine is called sweet polyuria, and Chinese medicine is called thirst, which is emaciation plus polydipsia. Glucose enters the urine. >>>More
Solution: Let 2l=20cm, l=10cm
The geometric relationships in the diagram are known. When the rod is under pressure on x and y at any moment, the trajectory of the rod's centroid o is an arc with bo as the radius. >>>More
1 part of blue flower, 2 parts of yellow flower, 3 parts of safflower, blue flower accounts for 1 6 of the total area, yellow flower accounts for 1 3, and safflower accounts for 1 2 >>>More
You can assume that you bring one yuan, then 1 15 yuan is the ** of the language book, and 1 24 yuan is the ** of the math book. >>>More
1) Process Indicates that the colorless solution is acidic. >>>More