In order to explain how the first eukaryotic cells may have evolved, scientists proposed the

A. theory of solar nebula.

B. theory of spontaneous generation.

C. theory of endosymbiosis.

D. theory of autotropic evolution.

What is suggested by similar bones in vertebrate fossils and present day vertebrates

Homeostasis is the body tendency to

Hugh wrote the characteristics of two types of galaxies as shown below: Type A: Has a central core from which curved arms come out Type B: Forms a perfect sphere or a smooth flattened oval Which statement is correct?

An action potential is a. the tiny electrical charge that exists when a. a neuron is neither receiving nor sending information. b. an electrical signal that travels along the axon of a neuron. c. the small gap that exists between adjacent neurons. d.

The AUC and AUA codons in mRNA both specify isoleucine. What feature of the genetic code explains this? complementarity nonsense codons universality degeneracy

what are 2 characteristics of a scientific information soucre that may indicate the information is unreliable

Which of the following hormones is responsible for the maturation process in the ovarian follicles and for stimulating the development of corpus luteum in a female

Which model of Golgi complex formation suggests that the cisternae of a Golgi stack remain in place as stable compartments held together by a protein scaffold, while the cargo is shuttled through the Golgi via vesicles that bud from one compartment

Diamond is The hardest mineral on the mohs scale A no nonmetallic element The only mineral with luster An isotope of silicon

How do muscles assist with movement of the body and of substances around the body?