The concept of uniformitarianism, articulated by James Hutton in the late 1700s, states that ________
A) the genetic code is similar among all living and extinct species
B) mutations accumulate at a constant rate in most organisms
C) current geological processes on Earth operate in the same manner as those that operated in the past
D) the rate of extinction has been constant throughout the time life has existed on Earth
C
You might also like to view...
Extensive horizontal gene transfer between domains greatly simplifies the construction of phylogenetic trees.
Answer the following statement true (T) or false (F)
Contact inhibition is best explained by which of the following statements?
a. Contact between neighboring cells triggers reactions leading to inhibition of mitosis. b. As neighboring cells become more tightly packed together, their size is restricted and cytokinesis can no longer occur. c. As cell number increases, the protein kinases they produce compete with neighboring cells, inhibiting mitosis. d. As cell number increases, the level of waste products increase, consequently slowing metabolism leading to mitosis. e. As cell number increases, size restrictions inhibit protein synthesis.
Skeletal muscles contract in response to _____
a. acetylcholine (ACh) b. dopamine c. serotonin d. endorphins
In which of the following structures does translation occur?
A. Vesicles B. Golgi apparatus C. Endoplasmic reticulum D. Ribosomes