How long ago are prokaryotes belived to have evolved on earth?

Which group is highest in the hierarchy of life and thus includes the other

1.1.2 A physical property of proteins is that ... A. they dissolve in water. B. they are soluble in ether and alcohol. C. they are denatured at low temperatures. D. they are macromolecules.

How is a nerve different from a neuron

Which of the following characteristics does an arthropod have? segmentation endoskeleton jointed appendages notochord coelom tissues, organs, and organ systems

For a given species, an increased evolutionary rate would cause a decrease in A) biodiversity. B) fitness of a species. C) similarity of the individuals in the species. D) the number of new genes in the DNA of the species.

What part of an animal cell is similar to your skin?

Which scientist disproved the idea that life comes from nonlife? Anton van Leeuwenhoek Louis Pasteur Robert Koch Paul Ehrlich

Langkah awal metode ilmiah adalah

An agent used to reduce the number of bacteria on a toilet would most accurately be called a (n) An agent used to reduce the number of bacteria on a toilet would most accurately be called a (n) disinfectant. fungicide. aseptic. virucide. antiseptic.

True or false? most antigens are large, complex molecules that are not normally present in the body. a. True b. False