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Rama09 [41]
3 years ago
11

4. When a Na atom, loses one electron, it gets a charge of _______. -1 +1

Biology
2 answers:
Kruka [31]3 years ago
8 0

Answer:

+1

Explanation:

because when an atom loses an electron it gains

Nana76 [90]3 years ago
5 0
+1 is the answer g yccuucyxrTzjvvhfxgcjbyxtzrEdgcvhkbknhvycgx
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The antiparallel arrangement within DNA molecules refers to Select one:
mylen [45]

Answer:

c. one helix strand that runs from the 5' to 3' direction and the other strand runs from the 3' to 5' direction.

Explanation:

A DNA molecule has <em>two strands of nucleotides with a sugar phosphate backbone each, but orientated on the opposite direction </em>allowing for the base pairs to complement one another, making it a more stable structure. <em>When two biopolymers run parallel to each other but with opposite directionality (alignment) we have an antiparallel arrangement.</em>

I annexed an image of the DNA structure.

I hope you find this information useful and interesting! Good luck!

4 0
3 years ago
The systolic arterial blood pressure observed for 20 dogs is normally distributed with a mean of 152 mm of mercury (hg) and a st
Damm [24]

Given: The systolic arterial blood pressure observed for 20 dogs is normally distributed with a mean of 152 mm of mercury (Hg) and a standard deviation of 18 mm of Hg.  

To find: P(100 < 152)

Method: Calculation of Z-Score followed by the probability or area of the bell curve at X = 100.

Solution:

Mean u = 152, std s = 18

Z score = \frac{X-u}{s} = \frac{100-152}{18} = -2.89

The value of P(100<152) is calculated by looking at the value of Z in the Z score for the standard normal distribution given in the image.

P(Z=-2.89) = 0.0019

The P(Z = -2.89) corresponds to the area in the left tail of the bell curve.

Thus the probability of 100 mm Hg blood pressure is 0.0019.

7 0
3 years ago
How many years does a snake live and how many times does it change its skin without pictures please and without links​
irina [24]

Answer:

9 years

Explanation:

Boa constrictor: 30 years

Boa constrictors are native to North, Central, and South America, mainly dwelling in rainforests. The lifespan for the large, heavy-bodied snake averages about 20 years in the wild, but living in captivity can increase that by 10 to 15 years.

8 0
3 years ago
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Is it advisable to lift up people quickly by holding
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Answer:

The person should be carried in a straight position to prevent damage of spinal cord.

Explanation:

5 0
3 years ago
In two to three paragraphs, trace the path of blood flow through the heart. Be sure to name all of the heart chambers, valves, a
Ad libitum [116K]

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Explanation:

5 0
3 years ago
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