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stiv31 [10]
3 years ago
8

Please only respond if you can help or know answers

Biology
2 answers:
Phoenix [80]3 years ago
7 0
1. I think it’s the last one but Here’s a little hint that could help? Osmosis is a diffusion of water through a selectively permeable membrane
2. Active transport
3. The second one I think but here’s something that might help, the cellular membrane is a thin flexible barrier that surrounds cell
nlexa [21]3 years ago
7 0

Answer:

A

Explanation:

A is not correct line

Its is true that cell membrane is differentially permeable or semi permeable but it doesn't mean that it donot allow any harmful substances to entre in cell . Cell has its mechanisims to protect himself from harmful chemicals . Such as cells have lysosomes.

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The parts of DNA that provides the code for proteins are
PIT_PIT [208]

Answer:

The genome of an organism is inscribed in DNA, or in some viruses RNA. The portion of the genome that codes for a protein or an RNA is referred to as a gene. Those genes that code for proteins are composed of tri-nucleotide units called codons, each coding for a single amino acid.

Explanation:

5 0
3 years ago
Lesch-Nyhan syndrome is an X-linked, recessive condition caused by mutation of the HPRT1 gene responsible for purine metabolism.
Elanso [62]

Answer:

B. The father did not contribute a sex chromosome to his daughter due to nondisjunction of the sex chromosomes. The daughter is XO and her only X chromosome came from her mother, who was a carrier.

A.The mother's X chromosomes failed to separate during meiosis, and the daughter inherited two X chromosomes with the Lesch-Nyhan mutation. The father contributed no sex chromosomes.

Explanation:

As seen in the question above, a little girl was diagnosed with Lesch-Nyhan syndrome, which is an X-linked recessive condition caused by a mutation in the HPRT1 gene responsible for purine metabolism.

The little girl's parents do not have the syndrome, and no one in the little girl's paternal family presented this syndrome, however, we know that the maternal grandfather of the little girl's mother had the syndrome, which means that it was the mother's genetic material that contributed to the development of the syndrome in the little girl. This was because the little girl did not receive any X chromosomes from her father, but she inherited the two X chromosomes from her mother that coded for the Lesch-Nyhan mutation. This happened because the mother's X chromosome disjuction did not occur during meiosis I.

As shown above, the father did not contribute any sex chromosomes to his daughter, which means that the daughter is XO and her only X chromosome came from her mother, who was a carrier.

3 0
3 years ago
When you talk about carbohydrates in a diet, people mostly think of foods containing grains, like bread and pasta. What else in
andrew-mc [135]

Answer:

Carbohydrates are found in a wide array of both healthy and unhealthy food,bread, beans, milk, popcorn, potatoes, cookies, spaghetti, soft drinks, corn, and cherry pie. They also come in a mixture of forms. The usal  common and abundant forms are sugars, fibers, including starches.

Explanation:

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According to biogenesis, the fir tree began life when fertilation occured to produce a single cell
ZanzabumX [31]
 Biogenesis, the fir tree began life when fertilization occurred to produce a singlee cell.
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3 years ago
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Which of these waste management facilities is most likely to produce air pollution?
Yuri [45]
C incinerator I guess
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3 years ago
Read 2 more answers
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