Diffusion of oxygen and carbon dioxide across cell membranes occurs most during _______. Select one: a. ventilation b. internal respiration c. movement of air from the nose to the nasal cavity d. both a and b

Answers

Answer 1

Answer:

Diffusion of oxygen and carbon dioxide across cell membranes occurs most during ventilation and internal respiration.

What do you mean by diffusion?

Diffusion is the net movement of anything generally from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in Gibbs free energy or chemical potential.

The three types of diffusion are - simple diffusion, osmosis and facilitated diffusion.

The kinetic energy of the molecules results in random motion, causing diffusion. In simple diffusion, this process proceeds without the aid of a transport protein.

Learn more about diffusion:

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Answer 2

Answer: the correct option is D) both a and b ..
because during internal respiration exchange of gases takes place and during ventilation that is to inhale and exhale air exchange of gases occurs during the movement of air through whole system ..

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The connection between the mother and the embryo that provides the embryo with oxygen and nutrients and waste disposal is the ______.A.) amnion
B.) cervix
C.) fallopian tube
D.) placenta

Answers

The correct answer among the choices listed above is option D. The connection between the mother and the embryo that provides the embryo with oxygen and nutrients and waste disposal is the placenta. Hope this answers your question. God Bless.

D. Placenta (Through the umbilical cord)

Variation of ecological habitats within a species is characteristic of which type of diversity?a.
Genetic diversity
b.
Ecosystem diversity
c.
Species diversity
d.
Regional diversity

Answers

The right answer for the question that is being asked and shown above is that: "B. Ecosystem diversity." Variation of ecological habitats within a species is characteristic of the type of diversity which is the Ecosystem diversity

At the end of meiosis II, four daughter cells are produced. true or false

Answers

Meiosis ll, splits the sister chromatids apart. this process results in four daughter cells.

If a person were fasting and hadn’t eaten for several days in a row, which source of energy would the body use as a last resort?lipids
protein
glycogen
lactic acid

Answers

The correct answer is the second option. If a person were fasting and hadn’t eaten for several days in a row, protein is most likely the source of energy would the body use as a last resort. Protein calories is used as an energy source when the body lacks fat or carbohydrate since it is also one of proteins function to supply energy.

Answer:

Explanation:

What is the special feature of the leaves of C4 plants?

Answers

The special feature is that it contains mesophyll and budndle sheath cells which is photosyenthesis is separated in each of them.

the special feature of the leaves of the c4 plants are:they contain chloroplasts both in the mesophyll and a budle sheath cellIn c4 Plants, the CO2 used in photosynthesis is combined with another compound so the y are able to be exposed to oxygen without RuBisCo

As DNA replication begins the DNA molecule is broken apart into two ________ strands.A. complimentary
B. RNA
C. transcription
D. identical

Answers

As DNA replication begins the DNA molecule is broken apart into two complementary strands. DNA replication is the process by which DNA makes a copy of itself during cell division. The process occurs in all living and is the basis for biological inheritance. The process starts with the separation of DNA strands in the double helix. Then replication for is formed followed by the binding of bases to each strand. Then the last step is termination of the Replication process

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