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3 years ago

Why is the heart/lung machine necessary when performing heart transplant surgery?

1 answer:

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The heart/lung machine is necessary when performing heart transplant surgery because during surgery, the actual heart is stopped so the heart/lung machine acts as a substitute heart that supplies oxygen and pumps blood to the body until the actual heart start functioning.

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Choose 5 different organisms. At least one of your organisms needs to be a plant. List an adaptation and describe how the adapta

const2013 [10]

Explanation:

1). Bats have echo location to sense prey to catch

2.)bearded dragon has a frill to expand. this is used to scare or warn predators

3.) cacti have thick skin to store water for long periods of time

4.)squids have inc sacks to spray predators to give a chance to flee

5). many amphibians have webbed feet to travel better in water

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3 years ago

Which equation shows how matter is transformed and conserved in photosynthesis? In other words, which is the balanced chemical e

emmainna [20.7K]

Answer:

Explanation:

The reactants of photosynthesis are CO2 and H2O and the products are C6H12O2 and O2

the answer is not exact, but it is the closest to the actual equation

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2 years ago

Why are people with type o blood considered universal donars?

vovikov84 [41]

Answer:

because they can donate blood to anyone

Explanation:

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3 years ago

Read 2 more answers

Why will many species of bird migrate to warmer climate during the winter

Doss [256]

Bird migrations began with the recession of the glaciers during the ice age. You will notice a great increase in insects in the spring time and early summer.The birds moved North to take advantage of this increase in the food supply that followed the warming in the spring and early summer. Their reproductive organs temporarily developed so they could lay eggs and raise a family. Look at the early flush of Night crawlers in the moist times of the early rains. By mid summer most of the insects have matured, mated and died. Their eggs have hatched and turned to larva and moved underground until next spring. The shortening of the days causes the reproductive functions to decrease and signals the birds that the food will soon become scarce. They move back to the area that makes it the easiest to find food and avoid freezing. which of course is the warmer climates nearer the equator. Not all birds move past the Tropics at approximately 30 degrees. Some like Chickadees may move down from Mi or Mn or Canada only as far south as Indiana. Some migrations may be quite short. For example from the mountains down to the plains. They don't generally reproduce in the warmer winter climes they migrate to. In the spring time they migrate along paths of the retreating glaciers. As the climate warms away from the tropics the birds follow the emerging insects etc to the birds selected breeding grounds.with increased insects and longer days to feed the hatching's. It is necesary to understand why they move to cooler climates in the summer to under stand why they move to eh warmer ones in the fall. As the days shorten the food supply dwindles and the babies have fledged. They move to warmer climates in winter to rest and refuel for the next years migration.

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3 years ago

Monosaccharides can be grouped as aldehydes and kefone groups,what is their difference and similarities and list four examples f

Lady bird [3.3K]

Answer:

Aldehyde has C=O bonded to atleast one H atom while Ketone has C=O bonded to two carbon atoms

Aldehyde - galactose, glucose, glyceraldehyde, fructose

Ketone - Trioses, Tetroses, Pentoses, Hexoses

Explanation:

Similarity

Both the aldehyde and ketone have C=O group

Difference

In aldehye the C=O group require atleast one hydrogen atom or the functional group in aldehyde is -CHO

while in ketone the function group is C=O only that is bonded to two carbon atoms.

Example

Aldehyde - galactose, glucose, glyceraldehyde, fructose

Ketone - Trioses, Tetroses, Pentoses, Hexoses

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3 years ago