Which of the following can be used to cut DNA so it can be studied?

A. restriction enzymes

B. gel electrophoresis

C. karyotypes

D. haplotypes

How is excess nitrogen removed from ecosystems?

Describe how energy flows into, through, and out of the owl's food web.

Which statement is not true about invertebrate animals? a) Most animal phyla are invertebrates. b) All major invertebrate groups arose from protistan ancestors. c) The vast majority of animal species are invertebrates.

Viruses are not true living organisms because they're not made of cells. - True or False.

When getting a vaccination, which substance is injected into the body? (1) bacteria to combat a pathogen (2) white blood cells to engulf a pathogen (3) a weakened form of a virus (4) antibiotics to kill a virus

Acetylcholinesterase (AChE) is a protein that catalyzes the conversion of acetylcholine to acetate and choline.

A city plans to convert all of its electricity sources to solar collectors. This is one part of a new plan to manage the city's energy resources. How will this plan most likely affect Earth's systems? a Air pollution in the atmosphere will decrease.

Which molecule is necessary for picking up electrons at the end of the ETC in order for cellular reservation to take place.

Which is a homologous chromosomes pair?

The frequency of recessive deleterious allele q is 0.09 in a population of fruit flies. You examine many individuals over many generations and measure that the mutation rate of (p) to (q) is 0.0003.