Answer:
Option (a) is the correct answer of this question.
Explanation:
Mona shows' Jet Lag ' condition as she's having trouble sleeping as her internal body clock (circadian rhythm) is already locked to California's time zone instead of its present position and time zone. Therefore, her body can not adapt to the new time zone and experiences the phenomenon of' Jet lag.'
Jet lag can take place when sleep-wake routines are interrupted.A person can feel somnolent, exhausted, nauseous, dizzy and somewhat fatigued. This may be the product of going across time zones or performing shift work.
Answer: True, both of the given statements are true.
Explanation:
1. Nearly all the environment contains microorganism whether it is soil, air, water or any other surface. They have the ability of live in the extreme conditions.
There are different forms of bacteria found at different places. Some of them are thermophiles that at found in extremely hot conditions such as thermal vents.
The organism like Psychrophiles are the microorganisms that have the ability to survive at lower temperatures. Example: bacteria found in polar regions.
2. A culture can be defined as a pure culture if it has an unadulterated species of bacteria. It has no contamination and if a small inoculum from the pure sample is streaked on a plate then a pure culture of the sample is obtained.
This should be done in an aseptic condition so that the bacterial species should be free from contamination.
The correct answer is - A) arthropods evolved before vertebrates did.
The arthropods have evolved much earlier than the vertebrates. They were on the scene millions of years before the earliest marine forms of the vertebrates. Because the arthropods were on the scene much earlier, they managed to use the newly formed suitable environment on the land. They were initially marine, but with only slight adaptations they were able to adapt to the terrestrial life.
Once the arthropods got out of the marine environment and started to take up the niches in the terrestrial environment, they experienced a real explosion in their evolution and diversification. They were the dominant land dwellers, and because of the lack of competition, as well as the higher levels of oxygen, they managed to reach pretty big sizes for their standards. Unfortunately for them, their brain capacity is limited to a very low level, so once the competition came on the scene, they were quickly pushed from the throne as the dominant terrestrial creatures.
The components<span> of </span>animal cells are centrioles, cilia and flagella, endoplasmic reticulum, golgi apparatus, lysosomes, microfilaments, microtubules, mitochondria, nucleus, peroxisomes, plasma membrane and ribosomes.<span>The centrosomes is where microtubules are made. During </span>cell<span> division (mitosis), the centrosome divides and the two </span>parts<span> move to opposite sides of the dividing </span>cell<span>. The centriole is the dense center of the centrosome. cytoplasm - the jellylike material outside the </span>cell<span> nucleus in which the organelles are located. Thats what i found when i researched about animal cells. Hope this helps, I put what i know and reaserched the rest.</span>
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