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1. Bacteria A and Bacteria B are considered hardy bacteria and can survive in extreme environments when grown individually. However, when they are grown together in a closed environment (on an agar plate), Bacteria A thrives, while Bacteria B eventually dies off.
a) Calculate the density per cubic centimetre of Bacteria A on the agar plate if there are 1500 bacteria on a 100cm3 plate. (1 mark)
Dp=N/A
1500/100^3
= 15?
is this right??????
a. You are having a conversation with Cindy, the magic turtle. Cindy is very curious about the formation of species. She tells you excitedly how one species of turtle inhabited the same geographical area, but ended up forming two different species over time. She admits she is a bit surprised by this; she thought that populations needed to be geographically separated from each other in order to form two different species. Explain to Cindy how speciation can occur without geographical separation. Name the type of pathway to speciation that occurred in this case. (3 marks)
Speciation can occur without geographical separation through sympatric speciation. Sympatric speciation is best defined as, when two populations share the same geographic area. Ecological isolation can reduce gene flow, and mutations can lead to genetic isolation.
*** I need to know if my answer is correct. As i have an assignment that is due tomorrow.
explain animal distribution regarding zoogeography?
What Is The Absolute Difference In [H+] Between 2 Aqueous Solutions, One Of PH 2.0 And One Of PH 3.0? What is the [OH-] concentration of the solution of pH 2.0?
The pH inside a lysosome is most similar to what other compartment in the cell?
thylakoid space
matrix of the mitochondria
cytosol
lumen of the ER
In the absence of predators which curve depict prey population
Comment “Fatty acids are storage fuels”. The weight of a person ABC is 65 kg. About 11.5 kg of his weight is due to the fat deposits in the body. He went for a hunger strike. Can you explain how long he can survive? i. without water and food? ii. without food but with water?
BRCA 1 and BRCA 2 are oncogenes. True or false.
a. DNA: TGG CCT ATA
mRNA:
tRNA:
AMINO ACID SEQUENCE:
TRAIT:
b. DNA: AAA TTT
mRNA:
tRNA:
AMINO ACID SEQUENCE:
TRAIT:
c. DNA: CCT GCG GCG
mRNA:
tRNA:
AMINO ACID SEQUENCE:
TRAIT:
d. DNA: TCG GCT
mRNA:
tRNA:
AMINO ACID SEQUENCE:
TRAIT:
e. DNA: AAA TTG
mRNA:
tRNA:
AMINO ACID SEQUENCE:
TRAIT:
Q 2. The first step in the detoxification of ethanol in the liver is its oxidation to form acetaldehyde. This reaction, catalyzed by alcohol dehydrogenase, produces large amounts of NADH. One common effect of alcohol intoxication is the accumulation of lactate in the blood. Can you explain why this effect occurs?
