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Why is it beneficial to plants that soil particles have negatively charged surfaces?
A. It helps maintain the water potential of the soilB. Toxic metals are trapped and kept away from the plants.C. They capture negatively-charged ionsD. Negatively-charged ions are pushed towards the rootsE. They attract positively-charged ions and prevent them from being washed deep into the soil.
Each olfactory receptor gene is involved in detecting specific odors. However, humans are losing OR genes, while mice and other mammals have ~1500 such genes, humans have ~900
The pattern of coat coloration in dogs is determined by the alleles of a single gene, with S being dominant over s. Black coat color is determined by the dominant allele A of a second gene, and homozygous recessive aa animals are tan.
Acetylcholine acts at the G-protein-linked receptor on heart muscle to make the heart beat more slowly by the effect of the G protein on a K+ channel. Which one or more of next would enhance this effect of acetylcholine.
Hydrolytic driving force. The hydrolysis of pyrophosphate to orthophosphate is important in driving forwards biosynthetic reactions such as the synthesis of DNA.
What specific DNA sequence would you look for to determine if your mouse has the knockout gene, and what techniques would you use to detect this DNA sequence?
The trait for short, stiff hair is recessive to long, furry hair, & purple color is recessive to black color. A purple furry female is crossed to black short hair male.
What is the rate of coagulation of naturally occurring colloids (under various pH and I scenarios)? How may the size spectrum of agglomerates change over time? How quickly do colloidal aggregates settle.
Construct-diagram a pediigree that clearly demonstrates the x-linked recessive pattern of inheritance. Use a made up trait and family history containing three generation and between 18 and 20 individuals with equal numbers of females and males in ..
A plant line with reduced fertility comes to attention of a plant breeder who observes that seed pods often contain a mixture of viable seeds that can be planted to create new plants.
The maltose transporter maltoporin Mr 49,913 spans the outer membrane of E. coli. It is comprised of eighteen successive antiparallel?
A is the allele for the enzyme involved in making melanin and a is the allele thatcodes for the inactive form of the enzyme. Albinismis observed in an individual with two non functional copies of the enzyme.
Polio and HIV are both +ssRNA viruses have very different strategies for replicating their genomes. After the viral genomes enter the cell, explain the first step involved in replication of each genome.
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