The nucleus of an atom is composed of
A. protons.
B. neutrons.
C. electrons.
D. protons and neutrons.
E. protons and electrons.
D. protons and neutrons.
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The gradient distributions of alleles across continents reflect _____
a. the delineation of new races b. genetic drift c. human migration patterns d. protective alleles e. natural selection
An animal with a diploid number of 36 chromosomes will have ____ chromosomes in its gametes and ____
chromosomes in its somatic cells. a. 18; 18 b. 18; 36 c. 36; 18 d. 36; 36 e. 36; 72
A peptide bond forms between which of these groups?
A) Carboxyl and amino B) Phosphate and hydroxyl C) Hydroxyl and carboxyl D) Carboxyl and aldehyde E) Amino and aldehyde
Membranes of some thermophilic Archaea are stabilized by ether linked phospholipids.
Answer the following statement true (T) or false (F)