Which of the following is true about cloning?
A. Cloning is the process of producing similar populations of genetically identical individuals
B. Cloning occurs in nature when organisms such as bacteria , insects or plants reproduce asexually.
Cloning in biotechnology refers to processes used to create copies of DNA fragments (molecular cloning), cells (cell cloning), or organisms.
D. The term also refers to the production of multiple copies of a product such as digital media or software.
女,宫内妊娠41周,严密监测下顺产一新生儿。出生后评估,新生儿皮肤青紫,心率110次/分,呼吸浅慢不规则,四肢稍屈、吸痰时稍有反应。该新生儿出生后Apgar评分为
A. 3分
B. 4分
C. 5分
D. 6分
E. 7分
女,宫内妊娠41周,严密监测下顺产一新生儿。出生后评估,新生儿皮肤青紫,心率110次/分,呼吸浅慢不规则,四肢稍屈、吸痰时稍有反应。该新生儿属于
A. 轻度窒息
B. 中度窒息
C. 呼吸衰竭
D. 死亡
E. 重度窒息
新生儿窒息的抢救首先应该是
A. 清理呼吸道
B. 人工呼吸
C. 使用呼吸兴奋剂
D. 胸外心脏按压
E. 使用肾上腺素