Answer the following questions true (T) or false (F)

1. Dendritic cells are the histamine-producing cells of the immune system.

2. Stomach acid is one of our natural defenses against bacteria in food.

3. Cytokines are molecules that cut holes in bacterial membranes.


1. FALSE
2. TRUE
3. FALSE

Biology & Microbiology

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What is the chromosome number of

endosperm?

a. haploid b. diploid c. triploid d. quatraploid e. it depends on which plant it is in

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The basic building blocks of DNA are ____

a. proteins b. fats c. amino acids d. nucleotides e. phosphates and sugars

Biology & Microbiology

DNA Pol III catalyzes the addition of successive nucleotides to the 5' end of a growing polynucleotide chain

__________________ Indicate whether the statement is true or false.

Biology & Microbiology

What is the genotype of a dominant individual if, when selfed, some of its offspring show the recessive phenotype?

A) Either DD or Dd B) dd C) DD D) Dd

Biology & Microbiology