Two biological problems, one biological problem

1.Equally, after the cell has stopped the plasmo-wall separation, there is no difference between the internal and external concentrations.

It is not equal if it is still happening, but it must be equal after it happens.

1 equal! The reason for the separation of the plasma wall is because of the concentration difference between the inside and outside of the cell.

1.Of course it's different. Because cells have been separated from the plasma wall, the premise of plasma wall separation is that the concentration of cell fluid is lower than that of the outside world. The concentration is the same only when the plasmo-wall separation stops (excluding the absence of cell fluid).

There are many layers of leaves, and direct observation will overlap them, and the observation will not be clear.

There should be no banyan tree, this is a tree species that grows in wetlands, or in tropical rainforests, Pinus tabuliformis: Pinaceae Pinus. Evergreen tree, adult tree crown often flat-topped, bark grayish-brown.

Coniferous, 2 needles in a bunch. Monoecious. The cones are ovoid spherical.

Distribution: Endemic to China. It is distributed in the middle and low mountainous areas of Beijing, and is widely cultivated in various places.

Hardy, barren and thin.

North China Larch: Larch genus of the Pinaceae family. Deciduous tree with grayish-brown bark and strip-shaped leaves.

Monoecious. The cones are ovoid spherical. Distribution:

Endemic to China, it is distributed above 1400 meters above sea level. It is cultivated above 800 meters above sea level in the mountainous areas of Beijing. Hardy.

Populus tomentosa: Populus in the family Salixaceae. Deciduous tree with grayish-white bark.

Monophytic leaves. dioecious, inflorescences. Capsule, the seeds have seed hairs.

Distribution: Endemic to China. It is widely cultivated in various parts of Beijing.

Hardy and resistant to atmospheric pollution.

Xinjiang poplar: Poplar of the family Salix family is a variety of silver poplar. Deciduous tree with a cylindrical crown with lateral branches gathered upwards and grayish-brown bark.

Monophytic leaves. dioecious, inflorescences. Distribution:

Native to Central Asia. It is cultivated in Beijing and grows better in Yanqing County. Drought tolerant.

Synonyms for poplar: Canadian poplar: Poplar genus in the family Salixaceae. Deciduous tree with dark gray bark and longitudinal fissures. The leaves are alternate and the leaves are triangular. Dioecism. Distribution: Native to the Americas. Some parks and roadsides in Beijing are cultivated. Likes moisture.

Populus microphylla: Populus in the family Salix family. Deciduous tree with gray-green bark and ridged branches.

The leaves are alternate, nearly rhomboid, and the widest above the middle. dioecious, inflorescences. Distribution:

Endemic to China. It is distributed in the mountainous areas of Beijing, and cultivated in the wind-blown and sandy areas of the plains. Wind resistance.

Aspen: Poplar of the Salicaceae family. Deciduous tree with grayish-white bark.

Nearly round. dioecious, inflorescences. Capsule.

Salix traits: Salix spp. Deciduous tree with dark gray bark.

The leaves are alternate, lanceolate, and the dorsal backs of the leaves are grayish-white. dioecious, inflorescences. Capsule, the seed has seed hairs.

Distribution: Produced in China, North Korea, Japan and other places. It is commonly cultivated in urban and rural areas of Beijing.

Hardy, drought tolerant.

Weeping willow: Salix genus of the family Salixidae. Deciduous tree with slender, drooping branches.

Leaves simple, alternate, lanceolate. dioecious, inflorescences. Capsule, the seeds have seed hairs.

Distribution: Produced in Asia, Europe, America. It is commonly cultivated in parks and watersides in Beijing.

Hardy and resistant to water and moisture.

Trowel willow: Salix salix is a variant of Salix officinalis. Deciduous tree with dense branches and a broadly ovate, trowel-shaped crown. Leaves simple, alternate, lanceolate. dioecious, inflorescences. Distribution: It is commonly cultivated next to highways and parks in Beijing. Hardy, drought tolerant.

Salix japonica: Salix salix is a variety. Deciduous tree with branches curled upwards. Leaves simple, alternate, lanceolate. Parhenogenesis, inflorescences. Capsule. Distribution: Commonly cultivated in parks in Beijing.

Looking at it this way, the answer should be D.

Yes, C is in my Golden Sun exam paper.

A digestion of antibodies by papain and pepsin, digestion inactivates antibodies.

B is the digestion of the protease on the antibody, protease, so the chemical essence of the antibody is that the protein B to C can not be seen from the figure, and the enzyme still has nucleic acid.

d Take a closer look at the place where pepsin is broken more than papain, in the place of the 3 corners.

It should be choose B, and it can be seen from the title that papain and pepsin digest antibodies, because enzymes hydrolyze proteins, and antibody stone proteins are known.