Which of the following statements is true regarding the systemic acquired resistance (SAR) response in plants? Select all correct choices
A. It is pathogen-specific.
B. It relies on salicylic acid.
C. It is only effective against biotrophic
pathogens.
D. It requires dead tissue.
B,D
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Whether an organism is classified as a photoheterotroph or a photoautotroph depends on its
A) energy source. B) carbon source. C) oxygen requirements. D) carbon and energy sources.
Answer the following statements true (T) or false (F)
1. The law of independent assortment states that the two alleles of the same gene will segregate from each other during gamete formation. 2. Offspring receive both the alleles for a given trait from one parent. 3. A locus encodes different genes in different individuals of the same species. 4. The sex of all animals is determined by chromosomes. 5. If you were to examine a typical population at a single locus, you would find more copies of the wild-type allele than any other allele.
Cerebral malaria is caused by what species of plasmodium protozoan?
a) P. malariae b) P. vivax c) P. ovale d) P. falciparum
Neisseria gonorrhoeae is:
A. the cause of ophthalmia neonatorum. B. the cause of gonorrhea. C. called the gonococcus. D. virulent due to fimbriae and a protease that inactivates IgA. E. All of the choices are correct.