synaptic signals use ______ for communication

Fill in the blank(s) with the appropriate word(s).


neurotransmitters

Biology & Microbiology

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Found mostly in freshwater, members of the ____ Lophotrochozoan phylum have a wheel-like, ciliated food-gathering

organ around their head called a corona, and some reproduce by parthenogenesis.

a. Rotifera b. Mollusca c. Platyhelminthes d. Annelida e. Nemertea

Biology & Microbiology

The processor of phosphorylating amino acid residues on both sides of the cytoplasmic tail of a receptor for tyrosine kinase is known as ___ .

a. transphosphorylation b. phosphorylation c. cleavage d. none of the above

Biology & Microbiology

following a scent; others

are silent. Erect ears and barking are due to dominant alleles located on different chromosomes. A dog homozygous for both dominant traits is mated to a droopy-eared, silent follower. The phenotypic ratio expected in the F1 is a. 9:3:3:1. b. 100 percent of one phenotype. c. 1:1. d. 1:2:1. e. 3:1.

Biology & Microbiology

An allele of RNA polymerase in Drosophila demonstrates a recessive lethal inheritance pattern. Which of the following is true?

A) Homozygous lethal genes will always demonstrate a gain of function pattern. B) The threshold effect is not seen in recessive lethality. C) Two homozygous recessive parents will have 100% homozygous offspring. D) Homozygous recessive offspring will never be seen. E) Two heterozygotes will have offspring with a 2:1 pattern.

Biology & Microbiology