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Otrada [13]
3 years ago
11

Why will salivary amylase NOT break down proteins?

Biology
2 answers:
Fittoniya [83]3 years ago
4 0
I would say A. The enzyme is the wrong substrate

I hope this helped :3 
artcher [175]3 years ago
3 0

your answer here is c a roooooooooo your welcom

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The tiny exoskeleton of a diatom is composed mostly of calcium carbonate. <br> a. True <br> b. False
ivann1987 [24]
False. Their exoskeletons are made of silica.
5 0
3 years ago
A) Compare and contrast diffusion, passive transport (diffusion &amp; facilitated), primary active transport and secondary activ
zheka24 [161]

Answer:

<u>Passive transport</u>: It does not need any energy to occur. Happens in favor of an electrochemical gradient. Simple diffusion and facilitated diffusion are kinds of passive transport.

<u>Simple diffusion</u>: molecules freely moves through the membrane.

<u>Facilitated diffusion</u>: molecules are carried through the membrane by channel proteins or carrier proteins.

<u>Active transport</u> needs energy, which can be taken from the ATP molecule (<u>Primary active transport</u>) or from a membrane electrical potential (<u>Secondary active transport</u>).

Explanation:

  • <u>Diffusion</u>: This is a pathway for some <em>small polar hydrophilic molecules</em> that can<em> freely move through the membrane</em>. Membrane´s permeability <em>depends</em> on the <em>size of the molecule</em>, the bigger the molecule is, the less capacity to cross the membrane it has. Diffusion is a very slow process and to be efficient requires short distances and <em>pronounced concentration gradients</em>. An example of diffusion is <em>osmosis</em> where water is the transported molecule.
  • <u>Facilitated diffusion</u>: Refers to the transport of <em>hydrophilic molecules</em> that <em>are not able to freely cross the membrane</em>. <em>Channel protein</em> and many <em>carrier proteins</em> are in charge of this <em>passive transport</em>. If uncharged molecules need to be carried this process depends on <em>concentration gradients</em> and molecules are transported from a higher concentration side to a lower concentration side. If ions need to be transported this process depends on an <em>electrochemical gradient</em>. The <em>glucose</em> is an example of a hydrophilic protein that gets into the cell by facilitated diffusion.

<em>Simple diffusion</em> and <em>facilitated diffusion</em> are <u>passive transport</u> processes because the cell <u><em>does not need any energy</em></u> to make it happen.

  • <u>Active transport</u> occurs <em>against the electrochemical gradient</em>, so <u><em>it does need energy to happen</em></u>. Molecules go from a high concentration side to a lower concentration side. This process is always in charge of <em>carrier proteins</em>. In <u>primary active transport</u> the <em>energy</em> needed <em>comes from</em> the <em>ATP</em> molecule. An example of primary active transport is the <em>Na-K bomb</em>. In <u>secondary active transport</u>, the<em> energy comes from</em> the <em>membrane electric potential</em>.  Examples of secondary active transport are the carriage of <em>Na, K, Mg metallic ions</em>.
7 0
3 years ago
why are you allowed to use the coarse adjustment when you focus the low power objective lens but not when you focus the high pow
FinnZ [79.3K]
Because you will focus past ("overshoot") your specimen. (Like using a race car as a shopping cart: it's too fast, and you'll fly past the cereal and never even see it before you realize you need to stop.) Also: you risk crushing the slide and objective against each other (on older or cheaper scopes), and that would be a costly (and embarrassing) mistake.
8 0
3 years ago
How can antibiotic resistance be minimized?
Anastaziya [24]

Explanation:

<u>There are many ways that drug-resistant infections can be prevented: immunization, safe food preparation, handwashing, and using antibiotics as directed and only when necessary. In addition, preventing infections also prevents the spread of resistant bacteria.</u>

8 0
2 years ago
By the 1900s what type of evidence was being collected at crime scenes to help positively identify suspects by one particularly
guapka [62]

Answer:

By 1900, Fingerprint was the evidence which was collected at crime scenes to help positively identify suspects by one particularly unique trait.  No two people can have the same type of fingerprints. It is a unique characteristic which is even not common among identical twins. Therefore, was considered as an important evidence for identification of suspects and linking them with the scene of offence. In 1904, the city of St.Louis, Missouri used fingerprint evidence for the first time for criminal identification.

7 0
3 years ago
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