【单选题】The diagram shows an animal cell which is undergoing mitotic division. Which stage of mitosis has been reached?
【单选题】The diagram shows an experiment to investigate photosynthesis. What is the most abundant gas present at the top of the tube at the end of the experiment?
【单选题】The diagram shows an electron micrograph of a typical animal cell . What is the function of the membrane system labelled X ?
A.
carbohydrate metabolism
D.
protein synthesis and transport
【单选题】The diagram shows an α 1: 4 glycosidic bond. Which molecules contain this bond?
B.
amylose but not cellulose
C.
cellulose but not amylose
D.
neither amylose nor cellulose
【单选题】The diagram shows an experiment to demonstrate the movement of molecules. After one hour, the water in the beaker turned red. What is the most likely reason for this colour change?
A.
Molecules of red ink move through the membrane by diffusion.
B.
Molecules of red ink move through the membrane by osmosis.
C.
Molecules of water move through the membrane by diffusion.
D.
Molecules of water move through the membrane by osmosis
【单选题】The diagram shows an animal whose scientific name is Falco peregrinus . To which species does it belong?
【判断题】“人类命运共同体”作为新时代中国特色社会主义理论的重要组成部分,是以习近平总书记为核心的党中央领导集体对“世界怎么了、我们怎么办”的深切反思和有力回应。
【单选题】如果一次课的教学任务是在复习巩固旧知识的基础上学习新知识,下列那种教学方法组合比较适宜
【单选题】如果一次课的教学任务是在复习巩固旧知识的基础上学习新知识,下列哪种教学方法组合比较适宜( )