Which of these transport processes is the major means by which Na+ is transported across the membrane of neurons? Why?

A) both II and III because the activity of the neuron varies
B) I because Na+ is so small it can freely diffuse into the cell
C) III because Na+ is actively transported out of a neuron to maintain extracellular concentration
D) II because Na+ is charged and cannot cross the hydrophobic interior space of the cell membrane

Answer:

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Answer:

collagen and elastic fibres.

Explanation:

fibers and other components of the connective tissue matrix are secreted by fibroblasts

Answer:

It is an exergonic reaction, with much of the energy lost as heat, which potentially might damage cells

Explanation:

Cellular respiration is an important process carried out by the cells of living organisms in order to supply energy needed for their various cellular functions. Cellular respiration generally involves the breakdown of the stored energy in glucose molecules (in the presence of absence of oxygen).

However, since the process of cellular respiration releases energy as chemical energy (ATP) and majority as heat energy, it is said to be an EXERGONIC REACTION i.e energy-releasing. This hear energy released can damage living cells, which is a major setback to cellular respiration.

The two transfers of thermal energy involved in this system are examples of conduction that may include the burner to the bottom of the pot and from the pot to the water. Thus, the correct options for this question are C and D.

Conduction may be defined as the process through which heat energy is typically transmitted through collisions between neighboring atoms or molecules. The process of conduction occurs more readily in solids and liquids, where the particles are closer together than in gases, where particles are further apart.

The mechanism through which heat is transferred from the hot part to the cold part of the body through the transfer of energy from one particle to another particle of the body without the actual movement of the particles from their equilibrium positions is called conduction.

Therefore, the correct options for this question are C and D.

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Answer:

B: Embedded within the hydrophobic and hydrophillic regions of the bi layer

Explanation:

They are integral protiens and have to be inside

i took a test

This movement aids the cell membrane in preserving its function as a partition separating the interior and exterior cell surroundings. Thus option B is correct.

Integral proteins protrude from each end of the phospholipid bilayer and are tucked inside. Larger molecules like glucose can be transported through cell membranes with the aid of integral proteins.

They have sections that match the polarity of the phospholipid bilayer, known as "polar" and "nonpolar" regions.

This movement aids the cell membrane in preserving its function as a partition separating the inside from the outside environments of the cell.

Therefore, in the fluid mosaic model, the transport protein is connected to the phospholipid bilayer's outer layer.

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Answer:

A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world.

Explanation:

Hope this helps you. :))

Answer:

I think it's because plants have chloroplasts because chloroplast are the organisms that helps plants in making their own food

Answer:

Answer:

phototropism

Explanation:

Answer:

Hi Noya here! (◕ᴥ◕)

Explanation:

Phototropism is the term that describes the growth of a plant toward any light source. School-age children often demonstrate this principle by showing how a newly sprouted seed, for example, leans in the direction of a nearby light bulb. Heliotropism is the process that describes how a plant specifically tracks the sun’s movement across the sky.

-happy to help! ʕ·ᴥ·　ʔ

Answer:

You can identify by the size and/or shape.

Answer:

the answer is C

Explanation:

c2h6 is the answer

Answer:

D

Explanation:

Answer:

Explanation:

Lac 1 and his 4 that shows identical phenotype are wild types.

Wild types are the native, the original species or individual of a particular habitat or colony.

Since lac 1 and his 4 are the wild type, lac 2 and his 3 shares the phenotype of Lac 1 and his 4 this because a cross with a wild type will give an individual with a blend of the two gene with phenotype as the wild because they have a dominant gene.

Lac 1 will shows its phenotype when his 4 is also present this is because a cross between the two will give an individual that is phenotypically identical with the parents

Lac 1 and his 4 are dominant.

Answer:

three years old i think. sorry if its wrong

The given question is incomplete, however, the questions related to this is as follows:

What are the characteristics of the water cycle?

What part do plants play in the water cycle?

Answer:

The correct answer is -

- The characteristics of the water cycle are evaporation, transpiration, condensation, precipitation, surface runoff, and groundwater.

- Plants perform transpiration.

Explanation:

The water cycle is the movement of the water in between different spheres of the earth that include the atmosphere, hydrosphere, geosphere and biosphere. The water cycle has various components and processes that complete the water cycle and connect different spheres.

The components of the water cycle are evaporation of water and transpiration from the hydrosphere or geosphere and plants respectively to the atmosphere. The condensation and precipitation to water again to the geosphere and hydrosphere from atmosphere and runoff on the surface on earth to the water resrvoirs.

Answer:

D. the nervous system

Explanation:

This system of your body controls your reflexes! :D

Answer:

Nervous system

Explanation:

The nerve receptors responsible for transmission of impulses to the brain are a part of nervous system.

Answer:

8

Explanation:

He is was a modern scientist(microbiologist and biophysicist).

Answer:

Lysosomes and peroxisomes, Microtubules, Endoplasmic reticulum, Mitochondria, and Cytoskeleton

Explanation:

The characteristics that eukaryotes have are lysosomes, mitochondria, nucleus, ribosomes, and endoplasmic reticulum.

Eukaryotes are lifeforms with nuclei and other membrane-bound organelles. Eukaryotic organisms include all animals, plants, fungi, and protists, as well as the majority of algae.

Prokaryotic organisms are the ones lacking a well developed nucleus. They do not possess lysosomes, mitochondria, nucleus, ribosomes, and endoplasmic reticulum.

Thus, these are five organelles that are present in eukaryotes but are absent in prokaryotes.

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Answer:

a

Explanation:

because it is beneficial in both plant an water

Answer:

(B) No this would not be a symbiotic relationship.

Explanation:

this is because symbiotic relationship is where the two organisms have a mutual relationship where they depend on each other. The plants depend on water for their growth while the water does not depend on anything from the plants.

An example of a symbiotic relationship is between rhizobium bacteria and leguminous plants.The rhizobium bacteria gets shelter and food from the leguminous plants while the leguminous plants use the bacteria to convert nitrogen in the air to nitrates through a process called nitrogen fixation.

Answer:

Generally, prevailing winds blow east-west rather than north-south. This happens because Earth's rotation generates what is known as the Coriolis effect. The Coriolis effect makes wind systems twist counter-clockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.

Explanation:

Answer:

B - packaging signal hormones for export out of the cell

Explanation:

Remember the smooth ER packages proteins and sends them out of the cell through vesicles (endo/exosymbiosos)

Answer:

C. It is detoxifying drugs and toxins with hydroxylating enzymes.

Explanation:

Hope this helps ;)

Answer:

the excretory system

Answer:

Increased Chances of Survival

Explanation:

Genetic diversity we could say as Variation in a gene pool and it serves as a way for populations to adapt to changing environments, So if there is any environmental change, With more variation it more likely that some individuals will have variation of allele in them that suits the change so they will have brighter chances of surviving.  

An increased chance of survival is the benefit of diversity in a gene pool.

Increased Adaptability: A broad gene pool produces a population with a wider range of genetic features and variants. Due to this diversity, there is a greater chance that an individual may have favorable qualities that will allow them to adapt to shifting environmental factors like temperature, resource availability, or the prevalence of diseases. Individuals with genetic variants that are advantageous in the altered environment are more likely to survive and pass on their genes to succeeding generations.

Better Resilience: A diversified gene pool acts as a defense against potential dangers and difficulties. A population with a diverse range of genetic variations is more likely to have some members who are immune to or resistant to particular illnesses, predators, or other stressors.

Hence, an increased chance of survival is the benefit of diversity in a gene pool.

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Answer:

Sister Chromatids

Explanation:

Before anaphase begins, the replicated chromosomes, called sister chromatids, are aligned at along the equator of the cell on the equatorial plane. The sister chromatids are pairs of identical copies of DNA joined at a point called the centromere.

Answer:

Proportion of heterezygous progeny = 3/4

Explanation:

According to Mendel's law of independent assortment which states that the alleles of two (or more) different genes get sorted into gametes independently of one another. This means that the allele a gamete receives for one gene does not influence the allele received for another gene.

Gametes produced by the fishes assuming independent assortment:

Fish 1 = aB, ab, aB, ab

Fish 2 = AB, Ab, aB, ab

Progeny from cross:

aBAB, aBAb, aBaB, aBab

abAB, abAb, abaB, abab

aBAB, aBAb, aBaB, aBab

abAB, abAb, abaB, abab

Proportion of heterezygous progeny = 12/16 = 3/4

Answer:

Chemoautotrophs are able to synthesize their own organic molecules from the fixation of carbon dioxide. These organisms are able to produce their own source of food, or energy. The energy required for this process comes from the oxidation of inorganic molecules such as iron, sulfur or magnesium.

Explanation:

Answer:

I'm almost positive it's C

Explanation:

Answer:

Thymine

Explanation:

Uracil is the nitrogenous base present only in RNA, but not in DNA. ... DNA have thymine, guanine, adenine and cytosine. Thymine is replaced by uracil in RNA.

Answer:

b. Living things

Explanation:

Every living thing contains organic compounds.