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Gennadij [26K]
3 years ago
5

Which statement best describes the progress of science?

Biology
1 answer:
Arlecino [84]3 years ago
7 0

A. Scientific ideas are changed when better ones are found.

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Lara is undergoing chemotherapy for breast cancer. After her chemotherapy session she suffers from bouts of nausea and vomiting.
KiRa [710]
<span>Answer: antiemetics</span>
<span><span>After chemotherapy session,  Lara suffers from nausea and vomiting. The medications that can subdue her vomiting are </span>antiemetics.<span>
</span>An antiemetic is<span> a  medication typically used to treat motion sickness and side effects of chemotherapy directed against cancer. </span></span>

<span>
Antacids are stomach acid reducers whereas laxatives are purgatives that loosen bowel movements.  ORT treats dehydration whereas appendicitis is an enlargement of the appendix. </span>

8 0
3 years ago
An abiotic organism is a living organism (True or False)
ValentinkaMS [17]

Answer:

false abiotic means non-living biotic means living.

4 0
4 years ago
Determine the cause of acceleration in each scenario. An airplane turning from south to west at constant speed is accelerating d
Elden [556K]

Answer 1) : Change in direction.

Explanation : When an airplane starts to turn from south to west at constant speed gets accelerated due to change in direction. The change in direction of the airplane causes the airplane to accelerate in the direction of west while it was moving in south. Here the acceleration is being affected because of the change in direction of the object moving with a constant speed.

Answer 2) Change in direction and increasing speed.

Explanation : When a biker was riding at the speed of 5 m/s north and then changed the direction to west at an increased speed of 7 m/s this was due to increased speed and change in the direction of the bike.

There was two factors which contributed to change the acceleration in this case. It was because of change in speed of the bike and also because of change in direction. This kept the bike in acceleration by increasing the speed while changing the direction.

Answer 3) Increasing speed.

Explanation : While the shopping cart was observed to speed up on the runaway while it goes down a hill gets accelerated due to change in its speed.

In this case, when the shopping cart is been released from the upside runaway; as it goes down it gains more speed due to the slope of the runaway. This is because the acceleration is increasing because there is increase in the speed of the shopping cart.

8 0
4 years ago
Read 2 more answers
Which of the following situations does diffusion not help, in our bodies?A. Oxygen entering the bloodstream.B. Food entering the
lubasha [3.4K]

Answer:

Glucose entering the intestines from the villus.This is by active transport.The latter is defined as the movement of molecules and  solutes from the region of lower concentration to the region of higher concentration against the concentration gradient.

Explanation:

All the above options depends on the diffusion gradients from one  higher region to another.e.g oxygen passing from high concentration from outside to lower concentration in blood stream,like wise Co2 from higher concentration from inside to outside,with passive diffusion lipids and water enter the small intestine(note amino acid and glucose,and fructose are different).

Active transport( through sodium dependent transporter) transports glucose to the intestine  from the villus.This is movements against concentration gradient because,glucose molecule are concentrated in intestine,and needed by the cells, in the body.Therefore they must be transported as a fast rate inn the blood .

However the absorption by the villi is very slow,therefore active transport is needed to move these against the concentration gradient into the intestine.And finally the blood.

If this were to be moved by  passive diffusion,the high concentration in the intestine will force this back into the villi

Therefore extra energy is needed by active transport for the glucose molecules to enter the intestine from the villus.

6 0
4 years ago
The most commonly occurring mutation in people with cystic fibrosis is a deletion of a single codon. This results in:__________
ad-work [718]

Answer:

d) a polypeptide missing an amino acid.

Explanation:

Deletion is a type of mutation when one or more codons from the reading frame are removed. This results in the production of a relatively shorter mRNA that lacks one or more codons otherwise present in the non-mutated mRNA. When there is a deletion of a single codon in the gene for cystic fibrosis, the resultant shorter mRNA codes for a polypeptide chain that does not carry one amino acid. For example, deletion of one codon results in deletion of a Phe  residue present at position 508 in CFTR. The mutated transmembrane protein CFTR folds in an improper way.

4 0
4 years ago
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