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irga5000 [103]
3 years ago
6

What information would a scientist need to discover whether a disorder had a genetic cause, an environmental cause, or a combina

tion of the two?
Biology
1 answer:
Aleks [24]3 years ago
6 0
He needs to know if the disorder occurs in the members of family (it would suggest genetic cause of a disease) or in housemates/colleagues from work (it would suggest environmental cause if sick people share the environment)
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What is present in human blood that ensures blood ph is maintained at about 7.4?
Anvisha [2.4K]
Bicarbonate buffer system. Human blood contains large amounts of carbonic acid, which is a weak acid, and bicarbonates, a strong base. If blood pH falls below 6.8 or rises above 7.8, one can become sick or die. This bicarbonate buffer system help maintain blood pH at 7.4. The bicarbonate neutralizes excess acids in the blood while the carbonic acid neutralizes excess bases.
5 0
3 years ago
1. Which of the following is an accurate description of mitosis and meiosis? A. Mitosis produces two diploid daughter cells, whi
spayn [35]
A.
Mitosis is essentially creating more of the same type of cell (more diploid cells). Meiosis occurs in sex cells or gametes and produces cells witht he half the amount of chromosomes (haploid). 
6 0
3 years ago
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A remote control only works when it is pointed at the television. What is the best explanation for this?
Alla [95]

The correct answer is D) The remote control transmits information through waves, such as infrared waves, to the television. Therefore a remote needs to be pointed at the tv in order to work.

I hope that helps u!

(Lmk if u want more info)

:)

5 0
3 years ago
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The investigations conducted by Edwin Chargaff support the idea that DNA is the source of heritable information, and they also s
siniylev [52]

all the thymine pairs with adenine, therefore there is the same number of adenine and thymine bases and the same percentage

so we have 28%thymine and 28% adenine

100-28-28=44% left

this 44% is guanine and cytosine. All of the guanine pairs with cytosine and all of the cytosine pairs with guanine so we have 44/2=22% cytosine and guanine

composition:

28%adenine

28%thymine

22%guanine

22%cytosine

7 0
3 years ago
Which of the following hormones is not produced by the anterior pituitary?
Anarel [89]

Answer:

oxytocin

Explanation:

The pituitary gland is a small gland that divides into two distinct portions, the anterior and posterior lobes, and is located at the base of the brain.

The anterior pituitary, also known as the adenohypophysis, secretes six important peptide hormones, they are:

  • The growth hormone;
  • Adrenocorticotropin;
  • The thyroid stimulating hormone;
  • Prolactin;
  • Two gonadotropic homons - FSH and LH;

Oxytocin is not a hormone produced by the anterior pituitary but by the posterior pituitary, which is known as the neurohypophysis.

7 0
3 years ago
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