Which one of the following is a major cause of female infertility?

1.Hormone-related ovulation problems
2.Oviduct blockage
3.Cervical problems
4.Varicocele


2

Biology & Microbiology

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A DNA codon reads GCC. Give the corresponding mRNA codon, tRNA anticodon, and amino acid

What will be an ideal response?

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The wings of birds and insects share similar functions but evolved from different structures; therefore, these wings are said to be

A) homologous. B) biramous. C) uniramous. D) analogous. E) bipedal.

Biology & Microbiology

How is a nerve impulse usually transmitted across a synapse from a presynaptic to a postsynaptic cell?

a) via a direct connection b) via Na+ ions c) via a neurotransmitter d) via a spark e) via plasmodesmata

Biology & Microbiology

Class II MHC are found on

A) the skin. B) red blood cells. C) cytoplasmic membranes of nucleated cells. D) muscle cells. E) professional antigen-presenting cells.

Biology & Microbiology