A human zygote contains 46 chromosomes.

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


True

A zygote results from the union of a sperm with 23 chromosomes and an egg with 23 chromosomes.

Biology & Microbiology

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A sequence variant of a gene is called a(n)

A) allele. B) mutation. C) nucleotide polymorphism. D) ribotype.

Biology & Microbiology

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.

Biology & Microbiology

The surface area of a cell is important because 

A. the surface area limits the amount of molecular exchange that can take place between the cell and its surroundings. B. a small surface area allows the cell to protect itself from foreign organisms. C. a large surface area makes the cell more fragile. D. the surface area determines the genetic capabilities of the cell.

Biology & Microbiology

What would happen if snRNAs did not recognize the branch point within an intron?

A. A 3' poly A tail would not be added to the transcript. B. A lariat would not form. C. snRNAs would not base pair with the 5' end of the intron. D. A 5' cap would not be added to the transcript.

Biology & Microbiology