When did photosynthesis first occur?

Which class of biomolecule do the molecules in the table belong to? A. proteins B. carbohydrates C. nucleic acids D. lipids

What happens to a food chain when an organism is removed

What is the difference between the sugar found in dna and the sugar found in rna?

Which of the following descriptions about the different forms of DNA is not correct? a. A-DNA has a deeper major groove then B-DNA b. There are 10.5 base pairs per helical turn in B-DNA c. Z-DNA is a zigzag left-handed helix d.

Darwin developed the theory of evolution why there are so many different kinds of living things. he could easily observe that offspring of any animals were slightly different from their parents and that this could allow big changes over thousands of

The relationship between a gene and a messenger RNA is as follows:a. mRNAs are made from genes. b. Genes are made from mRNAs. c. mRNAs make proteins which then code for genes. d. Messenger RNA is directly responsible for making Okazaki fragments. e.

What is a real life example of ecosystem

Molds and mushrooms are both

What is the Hubble space telescope?

In sequential test, there is typically a loss in specificity. a. True b. False