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2 years ago

Explain why white blood cells are NOT used for blood typing.

Biology

1 answer:

adelina 88 [10]2 years ago

7 0

Answer:

Leukocytes are a hindrance in a blood transfusion. They can be filtered out and improve a blood transfusion.

Explanation:

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You have a cup of vegetable oil and a vial full of normal phospholipids. What would you predict would happen if you dropped the

Jobisdone [24]

The vegetable oil is made up of chains of long fatty acids. These long chains of fatty acids are non-polar in nature, i.e, they do not interact through ionic forces rather by covalent forces. The phospholipids are also long chain fatty acids with an ionic head. The mixing of the vial of phospholipid in vegatable oil will lead to the formation of a micelle where the lipophilic ends of the phospholipid will be on the outside and the lipophobic end will be towards the centre of the micelle.

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2 years ago

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Which describes a group of organisms that are members of a species?

bixtya [17]

Answer:

They can breed and produce offspring that can breed

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2 years ago

If a car is traveling 100 km/h west and comes to a stop in 3 min, what is the car's acceleration?

Nataly [62]

Answer:

0.15 m/s² east

Explanation:

We can use following kinematic equation for Uniformly-Accelerated Motion to solve this problem:

Where v is the final velocity, v₀ is the initial velocity, a is the acceleration and t is the time interval.

The data of the problem is:

v₀ = - 100km/h (remember to have a frame of reference, I decided traveling west will be towards the negative values and traveling east will be positive).
v = 0 km/h (the car comes to a full stop)
t = 3 min

Replacing the data in the formula:

0 km/h = -100 km/h + a × 3 min

It's very important to use the same units when solving problems. I will convert kilometer to meters and hour or minutes to seconds, because the answer choices are given in m/s².

0 km/h = 0 m/s

$\frac{100 \ km}{\ \ h} * \frac{1000\ m}{1\ km} * \frac{1\ \ h}{3600\ s} = \frac{27.78\ m}{\ \ \ \ s}$
$3 min * \frac{60\ s}{1\ m} = 180 s$

Then:

$0 m/s = -27.78 \ m/s + a * 180 s\\+27.78 m/s = a * 180 s\\$

$\frac{+27.78 \ m/s}{180\ s} = a\\\\+ 0.15 m/s^2 = a$

And considering our frame of reference, a positive sign indicates that the acceleration is east-bound.

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2 years ago

Invasive species always have a negative impact on an ecosystem. True False

Rasek [7]

No, this is false some invasive species help balance out populations but then again it may sway out of control again. Also, not all invasive species have a negative impact on the ecosystem.

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2 years ago

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Base Organ where it digests

Nezavi [6.7K]

Answer:

That would be the stomach my friend.

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2 years ago