The water molecules become close together and becomes a solid, the temperature is cold because the heat leaves the cup.
Answer:
When elongated, tube –shaped cells from the lining of the intestine are treated with a certain chemical in a dish, the cells sag and becomes round blobs. the internal structures disrupted by this chemical are probably microtubules
Answer:
Explanation:
Escherichia coli, is a type of bacteria that lives in the intestines. It's also found in the gut of some animals. Most of them are harmless, they aid keeping the digestive tract healthy. Though if contaminated food or fouled water is consumed, some strains can cause diarrhea .
Catalase enzymes, hydroperoxidase I (HPI) and HPII, catalyze the dismutation of hydrogen peroxide to water and oxygen but they play crucial roles in protecting cells against the effects of oxidative stress.
Some examples of pathogenic microorganisms which produces catalase include staph, bacillus, aureus,etc
Test Procedure:
- With the aid of a loop or sterile wooden stick, a small amount of bacterial colony should transferred onto the surface of clean, dry glass slide .
- A drop of 3% Hydrogen peroxide should be placed on to the slide and mixed.
- A positive result is indicated by the rapid evolution of oxygen gas (within 5-10 seconds), which is evident by bubbling, while a negative produces no bubbles or only a few scattered bubbles.
- The used slide should be disposed in the bio hazard glass disposal container.
Ssris alleviate symptoms of depression by increasing the<u> level of serotonin at the synapse
.</u>
Answer: Option C
<u>Explanation:</u>
Ssris (Selective serotonin re-uptake inhibitor) is a drug that is been prescribed to the people with depression and anxiety disorders. In the brain the information and messages are passed from one nerve cell to the other.
People with disorders find difficulty in transmitting the information. Hence a drug like SSRI's are prescribed to increase the level of serotonin at the synapse as the nerve cell passes the information through synapse the small gap between the cells.
I think it’s B
The smooth endoplasmic reticulum serves as a transitional area for transport vesicles. It also functions in carbohydrate and lipid synthesis.
