2001 年
生物 · 共 59 題 · 點擊選項即時核對答案
A fertilized ovum differs from an ovum in that it
Questions 22 to 24 refer to the table below, which shows the blood flow to the skeletal muscle and an organ, X, at rest and during exercise :
| Blood flow (mL min⁻¹) | At rest | During exercise |
|---|---|---|
| Skeletal muscle | 1 200 | 12 500 |
| Organ X | 500 | 2 000 |
Blood flow to the skeletal muscle increases during exercise to
Questions 22 to 24 refer to the table below, which shows the blood flow to the skeletal muscle and an organ, X, at rest and during exercise :
| Blood flow (mL min⁻¹) | At rest | During exercise |
|---|---|---|
| Skeletal muscle | 1 200 | 12 500 |
| Organ X | 500 | 2 000 |
Which of the following is not a cause for the increase in blood flow to the skeletal muscle during exercise ?
Questions 22 to 24 refer to the table below, which shows the blood flow to the skeletal muscle and an organ, X, at rest and during exercise :
| Blood flow (mL min⁻¹) | At rest | During exercise |
|---|---|---|
| Skeletal muscle | 1 200 | 12 500 |
| Organ X | 500 | 2 000 |
Organ X may be
Questions 25 and 26 refer to the diagram below, which shows the ventral view of a mammalian heart :
Which blood vessel(s) carries blood with a low oxygen concentration ?
Questions 25 and 26 refer to the diagram below, which shows the ventral view of a mammalian heart :
Which of the following is correct when blood is flowing out of the heart through blood vessel 2 ?
Questions 27 and 28 refer to the diagram below, which shows the nervous pathway involved in the withdrawal reflex when a person touches a hot object :
How many neurones are involved in this reflex arc ?
Questions 27 and 28 refer to the diagram below, which shows the nervous pathway involved in the withdrawal reflex when a person touches a hot object :
In an accident, the dorsal root of a man was damaged at position X. What would happen if this man touched a hot object in a dark room ?
| Feel the pain | Withdraw hand immediately | |
|---|---|---|
| yes | yes | |
| yes | no | |
| no | yes | |
| no | no |
Questions 29 and 30 refer to the diagram below, which shows four oat seedlings growing under unilateral light :
A scientist concluded that the tip of the coleoptile is sensitive to light. His conclusion was based on a comparison of the results of seedlings
Questions 29 and 30 refer to the diagram below, which shows four oat seedlings growing under unilateral light :
Which seedlings would enable the scientist to conclude that there may be a growth-promoting substance passing from the tip to the growing region of the coleoptile ?