Which of the following is true about animals? A. All animals are single-celled. B. All animals have complex organ systems. C. All animals are consumers. D. All animals are producers.

In tree rings, like those shown, each "ring" of growth represents what? A. Two years of growth B. One season of growth C. One year of growth D. One month of growth

Theory or law that explains something about nature

In multicellular organisms, how do cells perform, the organism's life processes without doing all the processing themselves?

A dialysis bag is filled with distilled water and then places in a sucrose solution. The bag's initial mass is 20 g. And its final mass is 18 g. Calculate the percent change of mass, showing your calculations.

What greek word did the term spindle fibers originate from

Label the steps for protein synthesis in order, beginning with the first step. step onestep twostep threestep four step five Once the protein is made, the gene for a particular trait is expressed.

In humans, the ability to produce the pigment melanin is dominant over the lack of that ability, a condition known as albinism.

A researcher has sequenced a gene that has two alleles. she has a mixture of both alleles and clones them into e. coli using plasmids. she is interested in one particular allele that is correlated with a disease.

List 3 roles of DNA in relation to genetic information:

Select all the offspring phenotypes that could be produced from a BbEE x bbee cross (shown above). black fur, red eyes black fur, black eyes white fur, black eyes white fur, red eyes