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1- How is the DNA of prokaryotes organized? In chromosomes? If so, how many, what shape?
2- what are the characteristic shapes of individual bacteria cells? Give Latin and English terms.
3- why do Gram-positive bacteria retain the violet dye?
4- what is the difference between a chemolithotroph and a chemoheterotroph?
5- Differentiate between the following sets of related terms:A) prokaryotic/eukaryotic.B) obligate anaerobe/facultative anaerobe/obligate aerobe.C) Gram-positive/ Gram-negative.
6- The Gram stain test separates most types of bacteria into two groupe. What steps are involved in this test?
Proteins discusses the different orders of protein structure. Explain why do you think it is that you can cook a pot roast where the meat proteins are altered by heating.
A 3-factor cross in Salmonella typhimurium was performed using bacteriopage P22. The cross between an arg-leu-his- recipient bacterium and bacteriophage P22,
Create a pure-breeding double-mutant apricot, blunt line and cross it with wild-type wasps. The F 1 is wild-type in appearance.
The structure of a mammalian hormone oxtocin, a nine-amino acid polypeptide as follows: cys-tur-ile-glan-asn-cys-pro-leu-gly. At the carboxyl end, the -OH is replaced by an amino group.
Suppose that you start with a lysogenic strain of E. coli. In this strain, a mutation arises that results in the intracellular repressor level becoming twice as high as it normally would be.
When a pea plant of genotype Aa Bb produces gametes, what proportion would be Ab? (Assume that the two genes are independent)
Bacteria have been on the earth for billions of years and were first organisms to inhabit the planet. They continue to be 1st organisms to return to an area after fire and Do you think the elucidation of the complete human genomic DNA sequence has fa..
Cleavage of DNA with restriction enzymes provides landmarks and sequence information. How frequently are specific sites found? How many sites are expected? Does this change if the DNA is circular.
Metabolism uses various ways to ensure that 2 opposing pathways do not occur at the equal time. For the following pair of pathways list 2 ways (different cell location, allosteric effector, covalent modification, different intermediate, different ..
How many 10 micrometer yeast cells could fit across the field. In a guinea pig, black is dominant to brown, and solid colour is dominant to spotted. A heterozygous black, solid-coloured pig is mated with a brown, spotted pig.
Diversity is good is one of the axioms of conservation biology. However in absentia of historical data, why is noting higher diversity in system NOT the best way to compare different communities for conservation purposes.
A forty-two year old woman decides to lose weight on a diet prescribed by an anorexic friend. She loses about thirty pounds in 45 days, but her serum potassium level falls to 2.1 mmol/L.
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