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Firdavs [7]
3 years ago
15

What happens when we breathe? Where does oxygen go?

Biology
2 answers:
Dovator [93]3 years ago
4 0
When we breath the oxygen goes to our lungs for us to live and it goes though our circulatory system for our blood to move around
Lina20 [59]3 years ago
3 0

in our lungs

and throughout our blood stream

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How do large molecules move across the plasma membrane
Elodia [21]

Answer:

The plasma membrane is selectively permeable

Explanation:

hydrophobic molecules and small polar molecules can diffuse through the lipid layer, but ions and large polar molecules cannot. Integral membrane proteins enable ions and large polar molecules to pass through the membrane by passive or active transport.

7 0
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A specific type of gram-negative bacteria contains endotoxin in the bacterial cell envelope. What is the likely clinical manifes
BlackZzzverrR [31]

Answer:

Fever.

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8 0
3 years ago
10. Researchers observe a large population of birds on a remote island. Birds in the population are found to have either red cre
IgorLugansk [536]
Suppose that the proportion of the white crest alleles (r) is given by w and that of the Red crest allele (R) is given by p. We have that p+w=1. The probability that an individual has 2 r alleles is given by w*w since for each allele position the probability is w. Only these individuals have a White phenotype. Hence, we get that w^2=\frac{1759}{1759+11088}; the right hand side is the proportion of white birds in the total population. Doing the calculations, this yields that w=0.37. From this, we calculate that p=0.63. The possible ways we have heterozygous individuals are the combinations Rr and rR. The probability for each of those is p*w. Thus, the total probability is 2pw. This is equal to 0.466=0.47. This is the fraction of the future population that is going to be heterozygous assuming the conditions of the Handy-Weinberg equilibrium like random reproductive matching etc.
7 0
3 years ago
5. Why do populations have variation in certain traits?​
Molodets [167]

Answer:

Variations are caused by mutation. random mating between organisms.

Explanation:

4 0
3 years ago
Which of the following pieces of information would serve as evidence that DNA is the source of heritable information?
chubhunter [2.5K]
The Hershey and Chase experiment concluded the same by labeling the DNA of the parents with phosphorous and found out that the DNA of the offspring also bear phospho- labeled DNA, which established the fact that DNA is the heritable information source. So, your answer is B. 
3 0
3 years ago
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