Which protein serves as a chemical messenger?

1) hemoglobin

2) actin

3) myosin

4) insulin

The Ararat Volcano is located in which country? a In Turkey, near the border of Iran b In Egypt, near the border of Iran

Which of the following planets has very little atmosphere? Earth Jupiter Mercury Venus

Which statement is true about folding in sedimentary rock layers? A. Overturned folds have no trough. B. Downfolds are called synclines. C. Upfolds are called synclines. D. Symmetrical folds are called monoclines.

How can electron transport be described

In horses, the allele for straight hair (H) is dominant, and the allele for curly hair (h) is recessive. A horse breeder mates a homozygous doninant mother with a heterozygous male. What is the chance that the offspring will have straight hair?

Is melting, freezing, vaporization, and condensation gain or loss in movement of particles?

A example of a species of decomposer that lives in the sahara desert

Explain why different gametes produced by the same person can have different combinations of alleles for genes that are located on two different chromosomes

A particular neutral uranium atom has 92 protons, 143 neutrons, and an atomic mass of 235. how many electrons does the atom have

Many people are proponents of using nuclear power instead of burning coal to generate electricity. What is an environmental advantage of using nuclear power?