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vlada-n [284]
3 years ago
15

A student conducted a scientific investigation on the magnetic properties of iron. She used a magnet to try to pick up iron nail

s. After making several observations, which question can she answer? Which part of a magnet is strongest at attracting iron? How fast does iron lose its magnetism? What is the importance of studying the magnetic field of a magnet? How does the color of iron change with exposure to air?
Biology
1 answer:
Harman [31]3 years ago
6 0

Answer:

A descriptive investigation cannot show a cause-and-effect relationship between bacteria growth and possible factors affecting growth.

Explanation:

I did  the quiz and got this one right -3-   <3

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Some meteroites have the same composition as the earths core
Nataly_w [17]
This is very so true
5 0
3 years ago
Glucose-6-phosphate dehydrogenase deficiency (G6PD) is inherited as an X-linked recessive allele in humans. A woman whose father
prohojiy [21]

Answer:

(a) 1/2; (b) no

Explanation:

Glucose-6-phosphate dehydrogenase deficiency (G6PD) is an X-linked recessive disorder and the woman's father was diseased so it means that woman is a carrier of the allele but has normal phenotype. It means that she will have XXᵇ genotype.

In contrast to this, her husband is diseased so his genotype will be XᵇY.

The Punnett square diagram related to the cross is attached.

(a) Proportion of their sons expected to be G6PD is 1/2:

They both may give birth to 4 progeny with genotypes XXᵇ, XᵇXᵇ, XY and XᵇY. It means they both may have 2 sons out of which one with genotype XᵇY will be diseased while the one with genotype XY will be healthy. So the proportion of their sons having G6PD is 1/2 or 50%.

(b) If the husband were G6PD deficient, the answer will not change.

The reason behind this is that this disease is caused by an allele located in X chromosome. But father contributes only Y chromosome to his son not X chromosome. The X chromosome will affect the genotype of his daughter not son that is why answer will not change. It means they will still have 1/2 of their sons diseased.  

7 0
3 years ago
Choose the sentence that best explains the importance of setting goals and sharing them with others.
ValentinkaMS [17]
A. You improve your health by setting as many goals as you can
8 0
3 years ago
Read 2 more answers
Inject DNA or RNA into the nucleus of a cell to reproduce.
kaheart [24]
The answer is A, Viruses

Viruses cannot reproduce on their own , so they have to inject their DNA or RNA into the nucleuus of a cell. By doing this, the virus will take over that cells and within times, that cells will pop up and producing more viruses.

This reproduced virus will repeat the same process until our immune systems stop them
5 0
3 years ago
g Deficiencies in glucose 6‑phosphate dehydrogenase frequently present as anemia. Glucose 6‑phosphate dehydrogenase catalyzes in
DerKrebs [107]

Answer:

Its primary role in red blood cells is to maintain levels of red blood cells with low levels of this compound are more suceptible to oxidative damage.

Explanation:

Pentose phosphte pathway helps in the formation of reducing equivalent named NADPH.

  The so formed NADPH is used to maintain a normal cellular level of glutathione which act as antioxidant.

 As glutathione is not mantained in its normal level, it ability to reduce to adverse effect of hydrogen peroxide is cut down.

  As a result cell is more suceptible to oxidative damage.

5 0
3 years ago
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