The dilution factor in order to end up with 96 colonies of bacteria is 0.23 × 
.
For calculating the colony forming unit bacteria;
Colony-forming unit (CFU or cfu) is a measurement of live bacterial or fungi cells and is used to calculate the colony-forming unit of bacteria. CFU counts only viable cells as opposed to direct microscopic counts, which count all cells, both living and dead, using a hemocytometer. Colony-forming units per milliliter (CFU/mL) for liquids and colony-forming units per gram (CFU/g) for solids are used to indicate the results for convenience. The miles and Misra method can be used to compute CFU, which is helpful for assessing the microbiological load and severity of illness in blood and other samples.
∴ cfu/ml = (no. of colonies x dilution factor) / volume of culture plate
23 x cells per mL = 96 × dilution factor
Dilution factor = 23 × / 96
Dilution factor = 0.23 ×
Therefore, the dilution factor in order to end up with 96 colonies of bacteria is 0.23 × .
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Answer:
True.
Explanation:
The interference theory explains the memory of the human brain. These memories are long term memories. Two main types of interference are proactive interference and retroactive interference.
The retroactive interference means when the older memories vanishes due to the learning of the new memory. The previously learned memories are forgotten by the individual. The same thing has happened with Mimi as she forgot the previous recipe due to the new memory.
Thus, the answer is true.
Because different restriction sites are used by different restriction enzymes to cleave DNA.
<h3>What is restriction sites?</h3>
- A restriction site is a segment of DNA with a base pair count between 6 and 8 that binds to a certain restriction enzyme. There are numerous restriction enzymes that have been identified from bacteria. By cleaving the viral DNA, they naturally render invasive viruses inactive.
- Restriction enzymes are beneficial in a variety of contexts. Each organism has a unique DNA sequence, so each one will have a unique arrangement of restriction sites.
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Answer:
Option: B+
Explanation:
The test to determine a blood group is called ABO typing. The blood sample is mixed with antibodies against type A and B blood. Then, the sample is checked whether or not the blood cells stick together. If blood cells stick together, it means the blood reacted with one of the antibodies.
B+ blood group:
A blood sample that has only antigen B on the red blood cells and antibody A in the plasma lies under B+ blood group.
B+ blood type means the person has antigen B and rhesus factor on RBC and could be able to receive blood from another B+ donor.
Please note:
As only antigen B is mentioned that is why we will consider B+ BLOOD group. Because negative antigen is not mentioned in the question and when there is no sign is mentioned we will consider it positive.
Mouth- moistening the mechanical digestion of food
Liver- aiding in chemical digestion of fats
Small intestine- chemical digestion and absorption of nutrients
Stomach- mechanical and chemical digestion of food with acids and enzymes
Large intention- absorption of water and compaction of indigestible material for elimination
Pancreas- secreting the enzymes lipase, trypsin and amylase.
