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

1. An organism's genotype influences its phenotype.

2. Gyrase breaks the hydrogen bonds between DNA strands and unwinds the DNA strands while topoisomerases relieve the coiling tension that develops as the helix unwinds.

3. DNA replication is a semiconservative process.


1. TRUE
2. FALSE
3. TRUE

Biology & Microbiology

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The polymerase used in PCR reactions is derived from the thermophile organism Thermus aquaticus

Indicate whether the statement is true or false

Biology & Microbiology

Discuss permeability in plant cell walls

What will be an ideal response?

Biology & Microbiology

Which of the following statements most directly supports the claim that different species of organisms use different metabolic strategies to meet their energy requirements for growth, reproduction, and homeostasis?

(A) During cold periods pond-dwelling animals can increase the number of unsaturated fatty acids in their cell membranes while some plants make antifreeze proteins to prevent ice crystal formation in tissues. (B) Bacteria lack introns while many eukaryotic genes contain many of these intervening sequences. (C) Carnivores have more teeth that are specialized for ripping food while herbivores have more teeth that are specialized for grinding food. (D) Plants generally use starch molecules for storage while animals use glycogen and fats for storage

Biology & Microbiology

Prions:

A) are a type of infectious agent composed only of protein B) cause Alzheimer's disease C) are a treatment for CJD developed by Stanley Prusiner D) are a type of virus E) destroy the cells lining the gastrointestinal tract

Biology & Microbiology