同义词:double helix double-helix 例句 1.Double helical structure of DNA and types of DNA helices. 去氧核糖核酸的双螺旋结构与其类别。 2.The two strands of the double helix are linked by pairs of nucleic acids like the treads in a spiral staircase. 这个双螺旋结构的两股之间是由成对的核酸联...
In biology, "double helix" is a term used to describe the structure ofDNA. A DNA double helix consists of two spiral chains of deoxyribonucleic acid. The shape is similar to that of a spiral staircase. DNA is anucleic acidcomposed of nitrogenous bases (adenine, cytosine, guanine, and thymi...
The DNA molecule is a double helix: that is two long thin strands twisted around each other like a spiral staircase. A gene is a length of DNA that codes for a specific protein.,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺
The two strands of the double helix are linked by pairs of nucleic acids like the treads in a spiral staircase. 这个双螺旋结构的两股之间是由成对的核酸联结的,它们就像螺旋式楼梯中的踏步板。 权威例句 Molecular structure of a left-handed double helical DNA fragment at atomic resolution. ...
are single-ring pyrimidine bases. The two strands of nucleotides are twisted into a right-handed double helix that resembles a spiral staircase. Alternating sugar and phosphate groups of each strand form the outer "handrails". The bases of each strand pair form the "s...
well with a pair of wide spiral staircases, lit by seventy-two internal windows, forming a double helix so that mule-drawn carts could descend on one ramp and come back up the other without colliding. “Although Clement and Charles V reconciled in ...
Discover how double-helix staircases work and the secrets behind the famous staircase in the Chateau de Chambord in France. Some historians believe the chateau and staircase were designed by Leonardo da Vinci.