When is passive transport used.

Answers

Answer 1

Answer:

When a molecule moves down its concentration gradient is it participating in passive transport


Related Questions

Some fungal species live in or on plants, producing compounds that can kill herbivores while feeding off of sugars from its plant host. What type of relationship does this fungus have with its host

Answers

This is a symbiotic relationship because both the plant gets benefitted with protection from the fungus, and the fungus gets benefitted by getting food from the sugars in the plant.

True or False: Microbiomes are found only within the body of a host, which may be animal, plant, fungal, or even protist.

Answers

True, microbiomes are found only within the body of a host.

Which of the following structures is part of the peripheral nervous system?

*Cranial and spinal nerves
Brain
Spinal cord
None of the above

Answers

Answer:

a. Cranial and spinal nerves

Explanation: is correct

the three steps that are required for dna replication are

Answers

Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment.

The three steps that are required for DNA  replication are initiation, elongation and termination.

What is DNA replication ?

The process in which DNA of a cell under go duplication to produce two copies during S-phase of cell cycle called as DNA replication.

It involves 3 steps such as initiation step where the origin of replication of DNA molecule undergo unwinding into two DNA strands.

An incomplete unzipping by forming replication fork is created is catalyzed by the helicase enzyme.

Secondly in elongation step the DNA polymerase enzymes make the complementary sequence against each parent template strand.  

It is an unidirectional, one strand which is synthesized in a continuous manner called leading strand, the strand which is synthesized in a discontinuous manner called lagging strand with Okazaki fragments.

Termination occurs in the last step, when the parent molecule has been completely replicated.

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What is an opposing viewpoint to the idea that climate change is real? (no links)

Answers

Well, some could say that climate change is just another phase of earth acting up again because millions of years ago, the earth warmed up to a point where there was practically no ice and we’re just waiting in the process. But err, I don’t know. Most people who think climate change isn’t happening are those who aren’t experiencing it in real time so….

True or false: Tonic contraction of smooth muscle in blood vessels is important in maintaining blood pressure.

Answers

the answer is true
hope this helps
and i hope i’m right lol

A trait that is masked or hidden unless there are two is called ...

(Mendelian Genetics Notes)

(1 Point)


an allele

recessive

dominant

incomplete dominant

Answers

Answer:

recessive gene

Explanation:

mainly masked by thee dominant gene eg Tt where T is dominant over t,,,there t is recessive..

I'm working on an assignment and they all seem true to me. Help?

Which of the following statements about plants is not true?
a. They make their food from carbon dioxide and water through photosynthesis.
b. Land plants have cell walls that help hold their stems upright.
c. They have adaptations that help prevent water loss.
d. Plants absorb food through their roots.

Answers

Answer:

A

Explanation:

because plants use atmospheric carbon dioxide and water absorbed from the earth to create organic matter in the process of photosynthesis. On that occasion, oxygen is released.

Answer:

A

Explanation:

I hope this is correct, since every other version I've seen of this question option A is water and oxygen.

which of these organs is an accessory organ of the digestive system?

Answers

Answer:

Where is the picture??

Explanation:

what are the effects of pollution on the atmosphere?

Answers

Answer:     This can kill crops or reduce their yield. It can kill young trees and other plants. Sulfur dioxide and nitrogen oxide particles in the air, can create acid rain when they mix with water and oxygen in the atmosphere.

Explanation:

What controls basic functions such as breathing, heart rate, and pulse?


A.cell body

B.spinal cord

C.frontal lobe

D.brain stem

Answers

The brain stem sits beneath your cerebrum in front of your cerebellum. It connects the brain to the spinal cord and controls automatic functions such as breathing, digestion, heart rate and blood pressure.

Answer: brain stem

When is it important to drink water?

Answers

Answer:

d. All of the above

Explanation: correct

Answer:

? why did you post this

Explanation:

how would you expect the return of the wolves to yellowstone to affect the other species there?

Answers

Due to the wolves being the natural predator of some species, like elk, the population would likely be impacted after the reintroduction of the wolves. These wolves would hunt their prey, causing a drop in population.

Clouds form when the water vapor in air condenses as

Answers

Answer:

Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals. For this to happen, the parcel of air must be saturated, i.e. unable to hold all the water it contains in vapor form, so it starts to condense into a liquid or solid form.

Explanation:

Cellular respiration is a complex process that

1- occurs before autotrophs are able to carry out photosynthesis

2- occurs only in animals that take in oxygen

3- is performed only by organisms that are incapable of photosynthesis

4- breaks down organic molecules to release stored energy

Answers

The answer is option 4

what is the purpose of a broth in a microbiology laboratory

Answers

In microbiology laboratory, broth is very vital. Its purpose is to provide growth medium for the available bacteria necessary for working on the nutrients. Broth gives steady and constant nutrients for the bacteria to quickly reproduce. It is normally a clear liquid made from bones, meat or vegetables.

What would be the safest way to reduce the impact of the the non-native red fire ant while minimizing the impact on other organisms

Answers

Answer:

The red fire ant is indigenous to South America. In recent years, this invasive species has become a pest for both humans and other ants

crop destruction

What would be the safest way to reduce the impact of the non-native red fire ant while minimizing the impact on other organisms?

A pouring gasoline on ant mounds

B

spraying broad-spectrum pesticides

с

release a species of fly that will prey on the fire ants

D

treating all species of ants with ant killer

Answer: Release a species of fly that ill prey on the fire ants

Explanation:

I assume that was the question with the answers and I had the same question thru study island so here ya go

Which of the following sentences state a significant conclusion that Gregor Mendel drew from his experiments with pea plants? Traits are inherited in discrete units and are not the result of "blending." Genes are composed of DNA. Recessive genes occur more frequently in the F1 generation than do dominant ones. There is considerable genetic variation in garden peas.

Answers

Mendel concluded that the alternative forms of each trait are coded by discrete factors, which were called alleles that combine in pairs to express the trait. Traits are inherited in discrete units and are not the result of "blending."

------------------------

After making many crosses that involved different traits -such as plant height, or flower colors-, Mendel observed that, per trait, the F1 only expressed one of the alternative forms, while de other one disappeared.

Mendel named dominant the expressed variant.

Mendel then let these new plants auto pollinate and observed the results in the second generation, F2.

He saw that the variants that had previously disappeared among the F1, reappeared again. Both alternatives for each trait were present in the F2.

Mendel named recessive the second alternative variant.

Mendel explained his results by arguing that discrete factors were responsible for these phenotypes.

These factors should have been present in the F1 in pairs.

One of them came from one parental plant, and the other factor came from the other plant.

These factors separated again during sex cells formation, producing two types of gametes, each with only one factor.

Mendel conclusion about his experiments was that per trait -flower color of plant length-, each plant had a pair of factors -which he named alleles-, and that each factor coded for one of the alternative forms of the traits -white or purple, tall or short-.

He thought that alleles separate -segregate- during the process of gamete formation.

The First Mendel's Law is the first conclusion he took about his experiments and is known as the segregation principle.

 

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what factors are examined by the field of demography? check all that apply.

Answers

Answer:

Demography is the statistical study of human populations. Demography examines the size, structure, and movements of populations over space and time. It uses methods from history, economics, anthropology, sociology, and other fields.

Which of the following is NOT part of the non-specific immune response?
A. Inflammation
B. Phagocytosis
C. Antibodies
D. Interferons

Answers

D.Interferons. .......

D. Interferons are not a part of the non-specific immune response.

What is the function of interferons?

Interferons were first described as an antiviral thing that interferes with viral replication in mammalian cells (10). they're secreted from inflamed cells and spark off an innate immune reaction that promotes now not best cytokine production but additionally herbal killer mobile features and antigen presentation.

Interferons (IFNs) — the body's first line of antiviral defense — are cytokines that are secreted by host cells in reaction to virus infection. by using inducing the expression of hundreds of IFN-inspired genes, numerous of that have antiviral capabilities, IFNs block virus replication at many ranges.

Interferons are a circle of relatives of clearly-happening proteins which are made and secreted with the aid of cells of the immune gadget (an example, white blood cells, natural killer cells, fibroblasts, and epithelial cells).

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if sodium hydroxide is left alone what state would it turn into ?

Answers

Answer:

It will react with the carbon dioxide that is in the air

Explanation:

When it reacts it will turn to sodium carbonate

Hope this Helps

Which type of resources form much more slowly than we use them? A: reusable B: renewable C: nonreusable D: nonrenewable

Answers

nonrenewable resources are used commonly and are quickly running out, and it takes longer for us to form more of these.

The type of resources from much more slowly than we use them is non-renewable resource. The correct option is D.

What are nonrenewable resources?

A non-renewable resource is a natural resource that cannot be replaced quickly enough by natural means to keep up with consumption.

Carbon-based fossil fuels are one example. With the help of heat and pressure, the original organic matter is converted into a fuel such as oil or gas.

Nonrenewable energy sources are not only affecting our planet's atmosphere by increasing greenhouse gas emissions.

Coal and oil combustion emits particles that can pollute the air, water, and land. Some of these particles are captured and stored, but many are released into the atmosphere.

The use of fossil fuels also disrupts Earth's "carbon budget," which balances carbon in the ocean, earth, and atmosphere.

Thus, the correct option is D.

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true or false along with natural selection,genetic drift has profoundly affected the evolution of human traits throughout our species history

Answers

Answer:

yes

Explanation:

due to drift / variation human has been able to atttain high and advanced level of intelligence and development

What does a ribosome do.

Answers

The ribosome reads the sequence of the messenger RNA (mRNA) and, using the genetic code, translates the sequence of RNA bases into a sequence of amino acids.
A ribosome is a cellular particle made of RNA and protein that serves as the site for protein synthesis in the cell. The ribosome reads the sequence of the messenger RNA (mRNA) and, using the genetic code, translates the sequence of RNA bases into a sequence of amino acids.

Where is the center of the cold air mass? ( name the region of the state near the center)

Answers

The center of this air mass is a high pressure center located in northern Montana

The ____________ receives the filtrate from the DCTs of several nephrons and funnels it toward the ____________ .

Answers

Answer:

collecting duct, renal pyramid

Explanation:

The collecting duct receives the filtrate from the DCTs of several nephrons and funnels it toward the renal pyramid.

how do you propagate trees​

Answers

Answer:

The simplest method of propagating a tree vegetatively is rooting or taking cuttings. A cutting (usually a piece of stem of the parent plant) is cut off and stuck into soil.

Remove any flowers or fruit on the cutting. Trim the stem to just below where the bottom most leaf meets the stem. On each of the leaves on the stem, cut off half of the leaf. Put the end to be rooted.

what is called renewable energy and nonrenewable energy​

Answers

Answer:

Resources are characterized as renewable or nonrenewable; a renewable resource can replenish itself at the rate it is used, while a nonrenewable resource has a limited supply.

Explanation:

Renewable resources include timber, wind, and solar while nonrenewable resources include coal and natural gas.

Answer:

The type of energy which can be used again and again is called renewable energy.

The energy which cannot be used again and again is called non renewable energy.

Which part of the cell does this illustration represent?


Calvin cycle center


mitochondria


cytoskeleton


endoplasmic membrane system

Answers

Answer:

Mitochondria

Explanation:

The mitochondrion is an organelle found in both animal and plants cells. However, it is not found in prokaryotic cells. The mitochondrion is most famously known as the powerhouse of the cell because it produces ATP. The defining visual feature of mitochondria is the wavey-like pattern within the organelle.

which organelles do both plant and animal cells have in common?

Answers

Animal cells and plant cells share the common components of a nucleus, cytoplasm, mitochondria and a cell membrane. Plant cells have three extra components, a vacuole, chloroplast and a cell wall.
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