Natural selection would have selected for those protocells and cells that were more able to use the energy available in their environment to allow growth and replication.
a. true
b. false
Ans: a. true
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A reproductive cell, or gamete, has:
A. one allele for each gene. B. two alleles for each gene. C. one allele for each gene if it is homozygous and two if it is heterozygous. D. one allele for each gene if it is truebreeding and two if it is an F1 offspring. E. between one and four alleles for each gene.
During electron transport which ions accumulate in the outer compartment of the mitochondria?
1.hydrogen 2.oxygen 3.iron 4.sodium 5.zinc
Unique parts of bacterial cells are ___,___ and ___
Fill in the blank(s) with the appropriate word(s).nucleoid region, capsule and pilus
The outer membrane of the nuclear envelope is continuous with the membrane of the ____ and is usually covered with
attached ribosomes. a. nucleolus b. cell wall c. chromatin d. plasma membrane e. endoplasmic reticulum