Protist reproduction
A. is only asexual by binary fission.
B. is most commonly sexual by meiosis.
C. is most commonly asexual by mitosis.
D. is only sexual by mitosis.
Answer: C
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Predict which of the following DNA oligonucleotide probes would have the highest melting temperature (Tm) when hybridizing to the target sequence 5'-GTGCCTGAATGCAATGTCA-3'
a. 3'-CACGGA-5' b. 3'-CATGGA-5' c. 3'-TTACAG-5' d. 3'-TTACTG-5'
What is a function of prokaryotic common pili?
a. biofilm formation b. transfer of DNA c. protein polymerization d. energy production e. lipid synthesis
In the dihybrid cross Aa Bb × aa bb, what proportion of heterozygotes for both gene pairs is expected among the F1 offspring?
A) 1/4 B) 1/2 C) 3/4 D) All are heterozygotes. E) None are heterozygotes.
In antibody-mediated immunity, what happens immediately after B cells are activated?
a. The foreign antigen-MHC complex is displayed on the cell surfaces. b. Activated T helper cells interact with the B cells. c. The B cells are cloned. d. Antibodies combine with antigens on the pathogen surface. e. The B cells becomes plasma cells.