Two Biology Questions: Solve Question 1: Answer A, Question 2 is B

are ribosomes, C and F are Golgi apparatus, E is the cell membrane, and B and C are endoplasmic reticulum.

After the amino acids enter the cell, polypeptides are synthesized on the ribosome, and the synthesized polypeptides are then synthesized in the endoplasmic reticulum to synthesize proteins, and then the proteins are wrapped in the endoplasmic reticulum to form vesicles to wrap the protein in it and transport it to the Golgi apparatus, which is processed by the Golgi apparatus, and finally the Golgi apparatus buds out to form vesicles to wrap the processed secreted proteins, transport them to the cell membrane, and secrete them by the cell membrane.

In this process, the path of 35s is ribosomes to endoplasm to Golgi apparatus, wherein, the endoplasmic reticulum membrane area decreases, the Golgi membrane area increases first and then decreases to the original state, the cell membrane area increases, and the ribosomes have no membrane.

All of them are active transport, which requires oxidative decomposition of organic matter to provide energy, which is proportional to oxygen within a certain range. In B, ethanol is a fat-soluble substance and is transported by free diffusion. Therefore, choose B.

It's been a hard fight, so I hope it's useful.

In the first question, it is not difficult to deduce from the radioactivity intensity of organelles and protein synthesis pathways in Figure A, A is ribosome, B is endoplasmic reticulum, and C is Golgi apparatus; In Figure B, D is the endoplasmic reticulum, E is the cell membrane, and F is the Golgi apparatus, so A is chosen.

The second question is that aerobic respiration is not required to provide energy, and active transport is excluded; And a c d should be active transportation.

The second brother was right.

Question 1: p1, p2, p3, p4

Question 2 1Centrosomes chloroplasts, vacuoles, cell walls.

2.Mitochondria.

3.Ribosomes nucleolus.

4.Chromatin: DNA and proteins, coarse and simple.

a. Eukaryotic cells b too high to reduce too low to isolate c sex hormones are lipids in nature d sucrose is not a reducing sugar.

a. Look at the concept b. Synthesize substances and provide energy c. Look at the concept d. E. coli is prokaryotic.

1.In experiments to observe earthworms:

1) Gently stroke the earthworm back and forth with your fingers, and you will feel rough because you feel the bristles.

2) The color of the back of the earthworm is darker, and the color of the ventral surface is lighter.

3) When observing earthworms, the body surface of the earthworm should be frequently rubbed with a cotton ball soaked in water to keep the body surface moist, and the purpose of this is to ensure the normal breathing of the earthworm.

4) The body of an earthworm is composed of many somites that are similar to each other, and such animals are called link-animals.

2.Do the following ** and questions.

A small locust with a thread drops to tease a hungry toad, and the toad will immediately open its mouth to eat the small locust.

Instead, a rogue fly that looks and looks like a large wild bee in shape and color, but does not have a stinger, teases the toad, and the toad will devour the rogue fly like a small locust.

Then he used a string to hang the wild bee to tease the toad, but the toad still opened its mouth to swallow it, but the big wild bee stung the toad's tongue, and the toad immediately spit out the big wild bee.

The toad was teased again with a wild bee, but the toad bent its head and ignored it.

Switch to the thief fly to tease the toad again, and the toad will not swallow it.

In the end, the toad was lured by hanging the locust with a thread, and the toad devoured the little locust again, showing that the toad was not full.

Question: (1) Step illustrates that toads have the instinct to prey on insects, which is a congenital behavior.

2) Step illustrates that the toad recognizes the big wild bee through life experience, so it no longer eats it, which is an acquired (or learned) behavior.

3) Steps illustrate that toads are less able to use experience to solve problems than higher animals.

4) Step proves that the toad does establish a new conditioned reflex in the step.

1.Over time, the dry weight percentage of (c) will increase and the dry weight percentage of (h, o) will decrease.

2.After the peptide chain is synthesized on the ribosome, it is often processed when it is further formed into a protein, and a part of the amino acids is often cut off during processing to form a protein. There is a peptide chain containing 100 amino acids, which contains 14 free amino groups, and 16 amino acids are cleaved during processing, so the free amino groups contained in the processed polypeptide chain are at least (b).

A 0, B 1, C 2, D 14.

1. Since the title does not state how many sex chromosomes there are, D cannot be determined

2. I think the answer is wrong b