What is the difference between active transport across a cell membrane and diffusion across a cell membrane?

Answers

Answer 1
Diffusion is the net movement of particles from a region of high concentration to a region of low concentration. Down a concentration gradient.

Active transport is the net movement of substances against concentration gradient using energy from respiration.

Hope this helps.

Related Questions

Various cultures designate racial categories differently, and they often base these categories on very different traits. For example, some cultures use nose shape as one of the defining traits for a racial group. Other cultures do not use nose shape in defining racial groups, but use hair color instead. Conduct a survey in person on your campus, via social media accounts online, or among your friends and family. Ask at least 20 people what five traits they think are most important when distinguishing racial groups. Document the responses, and then review the data. Did every person use the same traits? What do differences in racial classification such as these suggest about the universality of race and racial groupings?

Answers

Answer:

In the clarification portion below, the definition of the topic is mentioned.

Explanation:

This shows that the distinctions between people living in a culture or geographical region are often based on ethnicity including ethnic groupings. A single population belonging to a specific geographical region has been shown to possess many characteristics, including hair color, body potential for heat resistance, and menu variety. In something like a specific race or ethnic group, these social traits bring them alongside, and the young government associated with a particular race is often obligated to answer the custom practiced by individuals related to such a particular demographic. These are assumed that understand the connection to a specific community follow these rituals only to solve difficulties they have previously faced due to errors perpetrated by certain ancestors.

The majority of pesticides do not have a residual effect (i.e., not persistent; lose chemical activity) in the soil.

a) True

b) False

Answers

Answer:

B- False

Explanation:

Pesticides can contaminate soil, water, turf, and other vegetation. In addition to killing insects or weeds, pesticides can be toxic to a host of other organisms including birds, fish, beneficial insects, and non-target plants. Soil can be degraded and the community of organisms living in the soil can be damaged by the misuse or over use of pesticides. Some pesticides are more toxic to soil organisms than others.

Hope this helps!

1 Sustainability means: A. Meeting present needs without compromising needs of future generations B. Meeting present needs without the concern for future generations C. Ignoring the needs of current generations to help future generations D. Sustaining fish at a certain depth in the ocean 15 (1 Point)​

Answers

Answer:

A

Explanation:

What is the keystone species

Answers

Answer:

a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically

Explanation:

Answer:a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

Explanation:

The American Beaver (Castor canadensis) is one example of a keystone species in North America. In any arrangement or community, the “keystone” is considered one of the most vital parts. In a marine ecosystem, or any type of ecosystem, a keystone species is an organism that helps hold the system together.

why is it important to understand plant physiology in crop/plant production and productivity?in your discussion make sure that you mention related fields/areas in agriculture which specifically require a background of plant physiology ​

Answers

Knowledge of Seed physiology helps in understanding of different physiological and morphological changes that occur during germination.  By knowing the different inputs requirement of plants (water, nutrients, sunlight) we can easily manage the plant population to get highest yield.

What part of the cell determines the type and order of the amino acids that make up a protein?

Answers

Answer:

The gene, or sequence of DNA, ultimately determines the unique sequence of amino acids in each peptide chain. A change in nucleotide sequence of the gene's coding region may lead to a different amino acid being added to the growing polypeptide chain, causing a change in protein structure and therefore function.

The zika virus was first identified in Uganda in 1947. The virus is transmitted from person to person by a bite from a mosquito. It is commonly carried by the Aedes mosquito which is prevalent throughout Central Africa. The virus has more recently spread to the Americas (South, Central, and now North) and is expected to spread to Europe. There is a concern that the virus may reach epidemic proportions. Zika virus is related to yellow and dengue fever. Common symptoms are low grade fever and a distinctive skin rash and other symptoms include vomiting, headache, and muscle and/or joint pain. Pregnant women should avoid traveling to areas known to have zika virus present because the virus is known to cause microcephaly and developmental difficulties related to the central nervous system. Based on the paragraph above, class discussions, and other VALID (be careful with your selection of e-materials! CDC – Center for Disease Control is a good place to start) sources of information please answer the following questions.
1. State a reason why the virus has spread to the Americas and likely to spread to Europe.
2. Define the term microcephaly.
3. What bones of the fetal skull would be affected by zika? Specifically, what area of the CNS is not fully developed in microcephalic individuals.

Answers

Answer:

1. It is a highly contagious disease transmitted from person to person and thereby it is expected that infected persons carried the virus to America  

2. Microcephaly is a serious birth defect where a baby’s head is much smaller than expected.

3. Occipital bone. CNS malformations: ventriculomegaly, parenchymal and periventricular calcifications and cortical migration anomalies

Explanation:

The Zika virus (Flaviviridae) causes a contagious disease and it is transmitted by Aedes mosquitoes, which are also the main vectors of the dengue virus. Microcephaly is a condition where the baby’s brain has not developed properly during pregnancy, and it has been shown that this birth defect is associated with the Zika virus. During 2015 in Brazil, the incidence of infants with microcephaly born from mothers that contracted this disease during pregnancy was higher, thereby suggesting an association between both conditions. Baby health problems associated with Zika infection include microcephaly (skull partially collapsed), joints with limited motion, etc.

Select the correct answer.
Jayden is taking a test. He has to write why scientists support the theory that life began near hydrothermal vents in the ocean. Which point should he include in his answer?
A.
Hydrothermal vents were closest to ocean surface, and therefore could receive oxygen.
B.
Oceans were dry and only had water near the hydrothermal vents in the earlier ages.
C.
Even today, all life forms are first born near hydrothermal vents and they later migrate to land.
D.
Fossils of archeabacteria, which are early common ancestors, were found near hydrothermal vents.

Answers

Answer:

The answer is; D

Archaebacteria are early life forms on earth. They utilized the process of chemosynthesis to make organic molecules from inorganic molecules and for energy. The word archae means ‘ancient’ life forms. These single-celled organisms evolved around sulfur-rich environments of the hydrothermal vents.

Answer:

D

Explanation:

4. Which of the following statements BEST explains why you can hear noises
long distances at night?
A. There are fewer other noises at night.
B. Water conducts sound better at night.
C. Sound bounces off water better at night.
D. Sound waves are bent towards the cool air.

Answers

A: There are fewer other noises at night.
Please give brainliest :) Hope this helps

i guess its answer is option D

What adaptations allow conifers to live in dry
habitats?

Answers

Answer:

Explanation: Long, thin needles to reduce the surface area of their leaves, the leaves' waxy outer covering, and leaf openings in cavities on the surface of the leaves to reduce water loss by evaporation.

Long, thin needles to reduce the surface area of their leaves, the leaves' waxy outer covering, and leaf openings in cavities on the surface of the leaves to reduce water loss by evaporation.

If the mass of Earth were increased by a factor of 8.00 , by how many times would the force between Earth and the Sun increase?

Answers

Answer:They would increased a lot and cause problems.

Explanation:

Identify the structure labeled B

A. Nucleotide
B. Base
C. Phosphate
D. Sugar

Answers

The answer is A. Nucleotide

what shoukd the patient expect to experience living with the disease- Sitius Inversus?? in ur own words

Answers

Answer:

there is a complete mirror image transposition of the thoracic (chest) and abdominal organs , and anterior-posterior (front-back) symmetry is normal. Many affected people have no associated health issues when the condition is isolated.

Explanation:

Other Questions
Shannon wants to work with renewable energy. She is researching what it would take to become a geochemist. A geochemist is someone who uses chemistry to study water and elements in it. What skill or ability well Shannon need to be the most effective in this position? Help me please answer this ? Photosynthesis is the process through which plants produce sugar and oxygen. Photosynthesis can also take place in single-celled organisms like phytoplankton and other microorganisms. The process of photosynthesis occurs differently from one organism to the next, but several features remain the same. In short, photosynthesis takes in water and carbon dioxide, uses sunlight as a catalyst, and produces oxygen and sugar. The plants release the oxygen through respiration. They digest or store the sugar. Although the process seems simple, it is the most important event on the planet as far as animal life is concerned. Oxygen is a byproduct of photosynthesis. Animals would not be able to breathe if it was not for this process. Herbivores live off these fruits and vegetables and form the basis of any food chain. Carnivores and omnivores would not be able to find food if it were not for these sugars. Were it not for the simple process of photosynthesis, the Earth would be an uninhabited planet.Animals would not be able to breathe if it was not for this process. How does this sentence help to develop the idea that photosynthesis is essential to animal life? A. It shows that animals depend on this process for oxygen. B. It suggests that photosynthesis occurs in all animals. C. It suggests that photosynthesis takes place in the lungs. D. It shows that animals depend on this process for food. Which options demonstrate the idea of federalism?Select all that apply. Theresa works as a Risk Management Specialist for an investment corporation. Which best describes her educational pathway?A. an associates degree, then a bachelors degreeB. a masters degree, then vocational schoolC. vocational school, then an associates degreeD. a bachelors degree, then a masters degree ___ turn rocks into soil. I need help ASAP!1) What contribution do you think you will make to your country?2) What contribution did Barack Obama make? A poll conducted the day before the student- body presidential election at a midwestern university showed that 53.9 percent favored Mario, the rest favoring Yin Ling. The margin of error was 4.2 percentage points. Should Yin Ling have conceded the election? which of the following is NOT a physical change to adolescence?A. Have erratic emotions and behaviors.B. Rapid increase in heigth and weigth.C. Sweat and oil glands become more active.D. Sudden increase in hormorone production. Leon was asked to repaint the sign for his mother's ice cream shop, so he needs to figure out how much paint he will need. Determine the area of the ice cream cone on the sign. Round to the nearest tenth. 6 in 12 in. 50 POINTS: PLEASE ANSWER AS QUICK AS POSSIBLE!Question: After getting their results in, a group of scientists went back and looked at their study. As planned, their experiment consisted of three groups. The first group received a new medicine at a normal dose, the second group received the medicine at half the dose, and the third group received the medicine at twice the dose.Which of the following best describes what went wrong with the scientists study?Choices:- an improper experimental procedure- the lack of a control group- selection bias- human error How would a book written by an anthropologist about an indigenous group of people be different from an autobiography of one of the people's elders? The supermarket has 30 aisles. 60% are empty, without any shoppers. How many empty aisles are there in the supermarket? What was the next step after all the moisture was removed from the body What is a good way to establish the credibility of online sources?A.checking the site for links to other credible sourcesB.assess the presentation of the material for professionalismC.determine if the site presents good, unbiased coverage of the topicsD.all of the abovePlease select the best answer from the choices provided.ABCD Did the little ice age cause voluntary or involuntary migration ? explain can someone tell me why water pollution is bad and what its doing to our environment Two equations are shown: I will give 40 pts if someone answersEquation 1: (x 12) = 12Solve each equation. Why does photosynthesis occur at the upper surface of the leaf than the lower surface