Which best describes the structure of DNA?

A. Alleles held together by genes

B. A tetrad with two sister chromatids

C. Nucleic acids arranged in a double helix

D. Chromosomes linked in a loop

What is the function of the cholesterol molecules in a cell membrane?

The fetal hold should never be used on

Is a bone fragment an example of physical contamination?

Is giraffe a noun, verb, adjective?

How will the addition of water affect the acidity of a highly acidic solution having pH 2? There will be a slight decrease in the pH value. There will be a slight increase in the pH value. The pH value will remain constant.

Enzymes work best at?

Which technique is used to separate the different cell parts?

How do scientists know that the universe is expanding? The Doppler effect shows stars with yellow shifted light The Doppler effect shows stars with green shifted light The Doppler effect shows stars with red shifted light The Doppler effect shows

What are two ways in which scientists transform plant cells without using plasmids?

Exploring how indoor air pollutions lead to respiratory problems is an example of using biology to what