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Semenov [28]
3 years ago
10

If a cell has a high concentration of waste that it wants to get rid of, which do you predict will be able to get rid of the was

te sooner – a smaller cell or a large one? ​Explain your answer,​ make sure to use the following terms in your answer: plasma membrane​ and ​surface area to volume ratio​.
Biology
1 answer:
Natasha2012 [34]3 years ago
7 0
The larger cell would be able to get rid of the waste faster! The greater the surface-area to volume ratio of a cell, the easier it is for the cell to get rid of wastes and take in essential materials such as oxygen and nutrients through the plasma membrane!
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You isolate some muscle fibers to examine what regulates muscle contraction. When you bathe the muscle fibers in a solution cont
PolarNik [594]

Answer:

Experiment 4. Relaxed, the drug will stop the calcium so that it does not act on the troponin

Experiment 5. Contraction: In order for the muscle to relax, the actin and tropomyosin union must occur.

Experiment 6. Relaxation: the release of the actin-myosin complex occurs with consumption of ATP, thus it slides and generates contraction, by adding a hydrolyzable analog, this reaction is avoided giving rise to a prolonged actin-myosin binding which leads to relaxation while last effect.

Experiment 7. Ca2 + Contraction is very necessary so that during muscle contraction troponin can be extracted.

6 0
3 years ago
What are most scientific questions based on
Nookie1986 [14]
Most scientific questions are based off of theory.
6 0
3 years ago
Nancy suffer from insulin dependent diabetes mellitus and is on insulin therapy. You administered her insulin dose orally and re
maxonik [38]

Answer:  Insulin is a hormone, which is secreted by the pancreas to regulate the sugar levels in the bloodstream.

Explanation:

Insulin is a protein hormone if take orally, will get digested in the digestive tract, it will not be able to affect the target site of action.

Insulin gets denatured in the digestive tract. Thus it will not be able to control the blood sugar levels.

Nancy has taken the insulin dose orally, the insulin will get denatured in the digestive system, it will not function and Nancy will remain hyperglycemic after the consumption.

5 0
3 years ago
Anybody mine elaborating on what histamines are and how they help the body?
alexandr1967 [171]
Histamines are chemicals released by the body as an allergic response.They help the body by reacting when their are "intruders" so when enters, histamine acts as a messenger and sends out a signal for the body to create a reaction helping to get rid of teh intruder through some type of reaction.
5 0
3 years ago
The data obtained from the meselson–stahl experiment after one generation of replication eliminated the dispersive model of dna
Sedaia [141]
<h2>Given statement is false</h2>

Explanation:

According to dispersive model of DNA replication,DNA molecules are hybrids of parental and daughter DNA;In this model each individual strand is a combination of original and new DNA

Meselson and Stahl did an experiment on DNA replication using E.coli bacteria

  • E.coli was grown in a medium containing heavy isotope of nitrogen,bacteria took up the nitrogen and used to synthesize new biological molecules,including DNA
  • It was grown for many generations,the nitrogenous bases of the bacteria's DNA were all labelled with heavy nitrogen
  • Bacteria were then switched to light nitrogen isotope and allowed to grow for several generations
  • They then measured the density of the DNA using density gradient centrifugation
  • This method separates molecules such as DNA into bands by spinning them at high speeds in the presence of another molecule, such as cesium chloride
  • Each DNA produced two DNA molecules each with one new strand and one old strand called semi conservative replication(half of the parental DNA conserved in daughter DNA)
  • Each DNA strand act as a template for synthesis of new strand
  • Hence,dispersive model of DNA was eliminated and semi-conservative model of DNA replication was proved by the above experiment

3 0
3 years ago
Read 2 more answers
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