HL Topic B3.3 Muscle and motility - 题库网 (tiku.one)

1#

第 1 题组 (共 4 题 4 分)

1. What are the roles of the giant protein, titin, in muscle contraction and rx -h;1) ekaedb +j.supelaxation?1da-bj ex.)kh;e p s+u
I. It plays a role in elastic recoil of sarcomeres.
II. It binds to myosin in sarcomeres.
III. It resists overstretching of muscle fibres.
IV. It resists overcontraction of muscle fibres.

A. I, III and IV only

B. IV only

C. I,II and III only

D. I and IV only

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

2#

单选题 ( 1.0 分) (组内2/4) 切至整卷模式搜藏此题

2. Why do limb muscles act as antagoniscttm*e+q 2yjl5/kq *7xe2 +jv vyguf+ tic pairs to move a limb?

A. One pushes, the other pulls.

B. Two muscles can exert more force than one.

C. Muscles can only exert force when they contract.

D. Limbs move in many different planes.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

3#

单选题 ( 1.0 分) (组内3/4) 切至整卷模式搜藏此题

3. Which row correctly shows the function of each component of a synovial j6g;3 spd0avrfoint?;ga6vf d0spr3

A. B. C. D.

绑定到本题的附件链接:
绑定到本题的上传图片:

参考答案:

进入本题讨论区，参与讨论

标记此题

4#

问答题 ( 1.0 分) (组内4/4) 切至整卷模式搜藏此题

4. Marine mammals breathe air but have adaptations thdm77)fejbhh:0 nnp c ld/7k4kat allow them to live in wate h7/dd7h 0kmfp )k :cel47nbnjr.
List three adaptations of marine mammals to aquatic life.

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

参考答案:

进入本题讨论区，参与讨论

标记此题

5#

问答题 ( 1.0 分) (组内1/3) 切至整卷模式搜藏此题

第 2 题组 (共 3 题 3 分) 当前第1/3题

题组内容描述:
5. The image shows a sarcomere under the electron microscope.

(a) Label the following on thz 185n+,qascw(:yzwlkay 5 bz e diagram:
A – An area containing only actin filaments.
B - An area containing both actin and myosin filaments.

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

参考答案:

进入本题讨论区，参与讨论

标记此题

6#

问答题 ( 1.0 分) (组内2/3) 切至整卷模式搜藏此题

第 2 题组 (共 3 题 3 分) 当前第2/3题

题组内容描述:
5. The image shows a sarcomere under the electron microscope.

(b) Use the scale bar to estimate the actual length of this sarcomer (i)c iw*g o fibu9pt0qb y825ny4/qfae. Show your working and include units pi5/y inbfc)gau*y q82(qo4i09b wft.

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

参考答案:

进入本题讨论区，参与讨论

标记此题

7#

问答题 ( 1.0 分) (组内3/3) 切至整卷模式搜藏此题

第 2 题组 (共 3 题 3 分) 当前第3/3题

题组内容描述:
5. The image shows a sarcomere under the electron microscope.

(c) The semimembranosus m2ogn rrx48,wr t6c1 qk-w oizs/7bal,uscle is found in the human thigh. When it contracts it can extend the knee joint and flex the hip joint. rwrb7-qor2ni gxa6 /k, sz1cwt8l4,o It has a maximum sarcomere length of 4.4 µm and a minimum of 1.5 µm.
Calculate the percentage change in sarcomere length for this muscle when it contracts from 4.4µm to 1.5µm.

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

参考答案:

进入本题讨论区，参与讨论

标记此题

8#

问答题 ( 1.0 分) (组内1/2) 切至整卷模式搜藏此题

第 3 题组 (共 2 题 2 分)

6. Ventilation in mammals involves the mov qfe)+2xzdn-kement of the rib cage upwards then downwards direcfd + xnk2q)z-etions for inhalation and exhalation.
Discuss how the external and internal intercostal muscles act as an antagonistic pair of muscles to cause these movements.

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

参考答案:

进入本题讨论区，参与讨论

标记此题

9#

问答题 ( 1.0 分) (组内2/2) 切至整卷模式搜藏此题

7. Outline the role of the motor neuron, the neuromuscular6ceb +am qr+l*s um3,cvo :oy: junction and muscle fibres in skeletal muscle contrao::m o+uccv36+ lmey q,s*arb ction.

该题自我估分: (必填) (满分:1.0分)

绑定到本题的附件链接:
绑定到本题的上传图片: (问答题类型题目图片/附件必须插入上方文本框，否则会被移除题目绑定)

参考答案:

进入本题讨论区，参与讨论

账号		自动登录	找回密码
密码			立即注册

未使用图片

本次作答已使用