Which of these molecules is a disaccharide?

A. Galactose

B. Sucrose

C. Cellulose

D. Ribose

The reproductive organs of both sexes are designed to produce and permit fertilization of the germ or "seed" cells called A. ova. B. sperm. C. gametes. D. protozoa.

What are hollow tubes of protein that maintain cell shape and permit movement of cell organelles

Identify and define the two classes of natural resources

Why can the enzyme maltase, which breaks down into the sugar maltose, not also be used to break down the sugar sucrose?

Multiple select The common elements of all plants and living organisms are: nitrogen hydrogen sodium carbon oxygen

you are running an experiment trying to figure out how water affects plant growth for three orchid plants you recently bought. The orchids are the same species and you will place the plants next to eachother in the same windowsill.

The living world is organized in levels. Biotic and abiotic factors also can be arranged into levels of biological organization. Put the words below in order from the least complex to the most complex

Which of the following, when taken up by the cell, binds to the repressor so that the repressor nolonger binds to the operator? A) ubiquitin B) inducer C) promoter D) repressor E) corepressor

Which of these organisms would be a producer? A. fish B. grasshopper C. flower D. snake

A 75 year old man need a replacement heart valve. he lives alone and cares for himself. is a mechanical or biological heart more suited for him