Active immunity occurs after transfer of antibodies from mother to fetus

____________________ Indicate whether the statement is true or false.


F, Passive

Biology & Microbiology

You might also like to view...

In female humans and other mammals, dosage compensation is achieved by the inactivation of one of the two X chromosomes in each cell. Which one of the following does not occur in the X-inactivation mechanism of female mammals?

A. X-inactivation begins with a small region of the X chromosome that contains a gene for an X-inactivation specific transcript (Xist). B. Xist is expressed in low levels except when an X chromosome is about to be inactivated. C. When an X chromosome is about to be inactivated, Xist RNA transcripts increase markedly and undergo splicing, but do not encode a protein. D. Xist RNA is attracted to and associates with a protein called the X-chromosome inactivation center (XIC), which becomes entirely coated with Xist. E. Xist RNA recruits factors that promote DNA methylation, histone modification, and other changes associated with transcriptional silencing.

Biology & Microbiology

Determining the exact nucleotide sequence of a gene or gene fragment obtained from an unknown organism is based on which of the following methods?

a. Hybridization b. Sequencing c. Amplification (PCR) d. Genotypic

Biology & Microbiology

Epigenetic effects are the result of:

a. a change in the RNA sequence. b. DNA methylation. c. RNA methylation. d. a change in the DNA sequence. e. all of these option

Biology & Microbiology

Which type of chemical reactions in cells release energy?

A. Anabolic B. Catabolic C. Metabolic

Biology & Microbiology