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7nadin3 [17]
3 years ago
10

Which of the following types of passive transport involves the movement of molecules via special transport proteins? A. facilita

ted diffusion B. simple diffusion C. filtration D. osmosis
Biology
1 answer:
FrozenT [24]3 years ago
6 0

Answer:

A

Explanation:

There are different mechanisms for transport of molecules across the cell membrane. One kind of this transport is facilitated diffusion, this is a form of passive transport, not requiring any ATP (the opposite would be active transport, where it does require ATP.

Simple diffusion does require special transport proteins, and neither does osmosis. Filtration is a technique used for sterilisation of water, where any impurities can be drawn out of the liquid

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. In which phase of cellular respiration is glucose a substrate?​
vodka [1.7K]

Explanation:

During glycolysis, enzymes act on the substrate, glucose. Glycolysis occurs in the cytoplasm; here, 2 molecules of ATP are used to cleave glucose into 2 pyruvates,  4 ATP and 2 electron carrying NADH molecules.

Further Explanation:

In all eukaryotic cells mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced. Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’ or Citric acid cycle via the oxidization of pyruvate( through the process of glycolysis in the cytoplasm).

overall: C6H12O6 (glucose) + 6 O2 → 6 CO2 + 6 H2O + ≈38 ATP

Oxidative phosphorylation describes a process in which the NADH and FADH2 made in previous steps of respiration process give up electrons in the electron transport chain these are converted it to their previous forms, NADH+ and FAD. Electrons continue to move down the chain the energy they release is used in pumping protons out of the matrix of the mitochondria.

This forms a gradient where there is a differential in the number of protons on either side of the membrane the protons flow or re-enter the matrix through the enzyme ATP synthase, which makes the energy storage molecules of ATP from the reduction of ADP.  At the end of the electron transport, three molecules of oxygen accept electrons and protons to form molecules of water...

  • Glycolysis: occurs in the cytoplasm 2 molecules of ATP are used to cleave glucose into 2 pyruvates,  4 ATP and 2 electron carrying NADH molecules.
  • The Kreb's cycle: in the mitochondrial matrix- 6 molecules of CO2 are produced by combining oxygen and the carbon within pyruvate,  2 ATP oxygen molecules, 8 NADH and 2 FADH2.
  • The electron transport chain, ETC: in the inner mitochondrial membrane, 34 ATP, electrons combine with H+ split from 10 NADH, 4 FADH2,  renewing the number of electron acceptors and 3 oxygen; this forms 6 H2O, 10 NAD+, 4 FAD.

Learn more about cellular life at brainly.com/question/11259903

Learn more about cellular respiration at brainly.com/question/11203046

#LearnWithBrainly

5 0
4 years ago
The prostate gland is described in all of the following ways​ except:
andrey2020 [161]

Answer:

The correct answer will be option- D.

Explanation:

The prostate gland is a walnut-shaped gland present between the bladder and penis.

The prostate gland is a part of the reproductive system and not the urinary system as it helps in the nourishment and protection of the sperm cells. It secretes a fluid which contains enzymes like phosphatases, lytic enzymes and antibiotics which helps in the protection and passage of sperm to the egg cell.

Thus, option- D is the correct answer.

8 0
3 years ago
Voluntary or conscious activities of the body are controlled by the a. medulla oblongata. b. cerebrum. c. cerebellum. d. brain s
BigorU [14]

The cerebrum controls the higher brain functions such as speech, writing, etc. The cerebellum deals with the involuntary stuff. The other 2 are nowhere near what you are looking for.              B - Cerebrum is your answer.

4 0
3 years ago
What do the larva and pupa stages have in common?
weeeeeb [17]
What the larva and pupa stages have in common is that both stages take place in water.
This is where the insect evolves until it becomes fully grown and then leaves water.
8 0
3 years ago
Read 2 more answers
“*•Pls help me!!!•*”
Wittaler [7]

Answer:

<u>Cold weather</u>

Explanation:

  • Drought, large numbers of plants, and heavy wind are all factors which would cause the further spreading of wildfires
  • Wildfires generally take place in hot, humid, and dry weather
  • Hence, <u>cold weather</u> decreases the magnitude of the wildfire
  • <u>Option 3</u>
5 0
2 years ago
Read 2 more answers
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