Answer:
A.Explanation:
TutorialDiffusionDiffusion means that the net movement of particles (molecules) is from an area of high concentration to low concentration.Graph of the simple and facilitated diffusion taking into account the rate of uptake and the concentrationIf the particles can move through the lipid bilayer by simple diffusion, then there is no limit to the number that can fit through the membrane. The rate of diffusion increases linearly as we add more particles to one side of the membrane.If the particles can only pass through protein channels, then the rate of diffusion is determined by the number of channels as well as the number of particles.Once the channels operate at their maximal rate, a further increase in particle numbers no longer increases the apparent rate of diffusion. At this limited rate we describe the protein channel as being saturated.The cartoon illustrates several points about facilitated diffusion. The particles are more concentrated on one side of the membrane, and yet they can move in both directions. However, the net movement is from high particle concentration to low. If the number of particles gets so high on one side of the membrane that they interfere with diffusion through the protein channel, then we observe a limit to the rate of diffusion at the point of saturation.Illustration of facilitated diffusionanimation used with permission of the Virtual Cell Web PageProblem 7 | Answer | Problem 8The Biology Project > Cell Biology > Cell Membranes > Problem SetThe Biology ProjectDepartment of Biochemistry and Molecular BiophysicsUniversity of ArizonaMay 2002Revised: August 2004Contact the Development TeamSimple diffusion does not require energy: facilitated diffusion requires a source of ATP. Simple diffusion can only move material in the direction of a concentration gradient; facilitated diffusion moves materials with and against a concertion gradient.
Answer:
C. a concentration gradient, a protein channel, and no energy.
Explanation:
Facilitated diffusion requires a concentration gradient, a protein channel, and no energy.
What leads to the changes in shape of the active site when pH changes?
A. more H+ interfere with the amino acid bonds
B. the OH- ions break apart the amino acids
Answer:
A. more H+ interfere with the amino acid bonds
Explanation:
Enzymes are also sensitive to pH. Changing the pH of its surroundings will also change the shape of the active site of an enzyme.
This contributes to the folding of the enzyme molecule, its shape, and the shape of the active site. Changing the pH will affect the charges on the amino acid molecules.
Answer: A. more H+ interfere with the amino acid bonds
Plant and animal cells are classified as what type of cell?
A. eukaryotic
B. prokaryotic
The anticancer drug Taxol was originally extracted from the bark of the Pacific yew tree. This drug is an example of a type of ecosystem service known as
Answer:
Provisions
Explanation:
It's most likely Provisions because Provisions is an example of a type of ecosystem service.
Genetic factors allow some species of plants to survive in extreme climates while other plants are unable to grow. True or false?
Answer:true
Explanation: the factors can let the plants adapt to the environment
Hope this helps
Each body cell present in you now has different sets of genes.
False or True
Answer:
True
Explanation:
Every cell has got different sets of genes. Although they do have the same exact DNA. The set of genes expressed in a cell determines the set of proteins and functional RNAs it contains, giving it its unique properties.
Which statement best describes the starch content of two leaves taken from the same plant shown in the
chart below?
leaf A
taken from plant in
the dark for 48 hours
leaf B
taken from plant in
bright light for 48 hours
(1) Neither leaf contains starch.
(2) Both leaves contain the same amount of starch.
(3) Leaf A contains more starch than leaf B.
(4) Leaf B contains more starch than leaf A.
The statement best describes the starch content of two leaves taken from the same plant shown in the chart is given: (4) Leaf B contains more starch than leaf A.
Dark reactionplants use carbon dioxide with ATP and NADPH from the light reactions to produce glucose.It takes place in the stroma of the chloroplast.Light reactionsThe energy is then temporarily transferred to two molecules, ATP and NADPHThe light reaction is important to produce ATP and NADPH which is used as fuel for starch production.Thus, The statement best describes the starch content of two leaves taken from the same plant shown in the chart is given: (4) Leaf B contains more starch than leaf A.
Learn more:
https://brainly.com/question/18828260
why don't trees grow in the sea or rivers
Answer: Roots of trees need oxygen.
Are scans done with MRI, CAT scan, PET scan, X-ray, or ultrasound machines?
Answer:
MRI: Magnetic resonance imaging (MRI) uses the body's natural magnetic properties to produce detailed images from any part of the body.
CAT/CT scan: is an upgraded version of an X-ray, which it uses multiple x-rays taken from different angles all around a body. Then uses a computer to create complex cross-sectional images of parts of a body
PET scan: uses radioactive tracers dyes which put into a body(by being swallowed, injecting, etc.). Which is tracked by the PET scanner, creating an image. PET helps to visualize the biochemical changes taking place in the body, such as the metabolism (the process by which cells change food into energy after food is digested and absorbed into the blood) of the heart muscle.
X-ray: when a negatively charged electrode is heated by electricity and electrons are released. Which produces energy that is directed toward an anode at high velocity. Producing an X-ray when the energy collides with the atoms in the metal plate.
Ultrasound: using a small transducer it both transmits sound waves into the body and records the waves that echo back.
Explanation:
Answer:
I cannot figure out what it is you would like to know. Please think about how your question is worded, and make it clear. In usual medical terminology, static x-rays produce images but are not considered scans, whereas all the others are ‘scans’. CT uses X-rays to make a ‘scanned’ image of internal soft tissues that do not show well on simple static X-ray imaging. MRI uses magnetism and radio ‘waves’, ultrasound uses a version of echolocation, PET uses a radioactive ‘tracer’ compound.
Teeth of herbivores are always..................................
Select one:
a.
pointed and help them grinding plant
b.
Flat for grinding plant
c.
sharp for tearing meet
Of 1217 offspring produced in a cross of one variety of plants, 919 had violet flowers and 298 had pink flowers. What is the trait in this cross?
Answer:
The trait is the color of the flowers.
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
The time rate of change of position; distance divided by time.
Speed — it's defined as the rate of change of distance with respect to time.
Answer:
speed
Explanation:
What stage of mitosis is depicted by the image above?
O metaphase
telophase
O prophase
O anaphase
cytokinesis
Answer:
telophase
Explanation:
because the chromatids are pulled to the opposite sides
Which of the following statements about algal blooms is true?
A. Algal blooms are caused by fish
B. Algal blooms can only happen naturally
C. Algal blooms are always human caused
D. Algal blooms are sometimes caused by natural occurrence and sometimes the result of human activities
The following statements about algal blooms is true is Algal blooms are sometimes caused by natural occurrence and sometimes the result of human activities.
What causes algal bloom?Algae blooms can occur when a variety of suitable environmental conditions exist for Large algal growth.
Thus, option "D" is correct.
To learn more about Algal blooms click here:
https://brainly.com/question/20457647
Which of the following statements about homeostasis is NOT true?
A. Maintaining homeostasis requires that all of the body systems works together
B. Long periods of stress can disrupt homeostasis
C. Body temperature is a condition of homeostasis
D. Maintaining homeostasis is something that needs to be learned
Answer:
D. Maintaining homeostasis is something that needs to be learned
Please help me answer the following question.
Answer:
1a and 4b equals -59
rufjjfjvufjf
a part of neuron that carries impuleses away from the cell body is
Answer:
axon
Explanation:
also called nerve fibre
Scientists in Brazil have developed specific fertilizers and special breeds of soybeans and corn so crops can grow on large areas of tropical lands. This is valuable because farmers can help to feed the growing human population and strengthen the economy. However, trade-offs must be considered because farming on tropical lands can also A add helpful microorganisms to the soil B remove oxygen from the atmosphere C reduce populations of native species D reduce mutations and disease in wildlife populations
Answer:
C reduce populations of native species
Explanation:
The overexploitation of the land by farming practices represents one of the most important challenges that face wild populations and threatened species, representing a concern to biodiversity conservation. Farming practices can destroy the natural structure of the soil, reducing diversity by killing small animals (e.g., insects), bacteria, and fungi that live in the substrate. Moreover, runoff may also carry herbicides and pesticides used in monocultures that can damage aquatic ecosystems, disrupting and killing aquatic wildlife and polluting water sources. Some ecological farming methods that help to reduce biodiversity loss include, among others, the use of natural fertilizers, diversification of crops, biological pest control, etc.
What is the common functional significance of the many cells making up such seemingly different structures as the lining of air sacs in the lungs and the wavy lining of the human intestine
Explain the larger impact of fish farming on the environment.
Explanation:
The most common negative environmental impacts that have been associated with aquaculture include: waters eutrophication, water quality, alteration or destruction of natural habitats; introduction and transmission of aquatic animal diseases (FAO, 2006a).
What is Puzzle 3 Summer break escape room kesler science answer?
Can someone help me if this is correct
Answer:
I think your answer is wrong. The right answer is D. Nucleus & Ribosome.
Explanation:
A process that takes place in the cells of all living things: the production of proteins. This process is called protein synthesis, and it actually consists of two processes — transcription and translation. During translation, the genetic code in mRNA is read and used to make a protein. These two processes are summed up by the central dogma of molecular biology: DNA → RNA → Protein. In eukaryotic cells, transcription takes place in the nucleus. During transcription, DNA is used as a template to make a molecule of messenger RNA (mRNA). The molecule of mRNA then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs.
The nucleus contains the cell's DNA and directs the synthesis of ribosomes and proteins. Typically, the nucleus is the most prominent organelle in a cell. Eukaryotic cells have a true nucleus, which means the cell’s DNA is surrounded by a membrane. Therefore, the nucleus houses the cell’s DNA and directs the synthesis of proteins and ribosomes, the cellular organelles responsible for protein synthesis.
What substances does the excretory system get rid of?
Answer:
This is the job of the excretory system. You remove waste as a gas (carbon dioxide), as a liquid (urine and sweat), and as a solid. Excretion is the process of removing wastes and excess water from the body. Recall that carbon dioxide travels through the blood and is transferred to the lungs where it is exhaled
Explanation:
I hope it's help u
Answer:
You remove waste as a gas (carbon dioxide), as a liquid ( sweat), and as a solid. Excretion is the process of removing wastes and excess water from the body.
...
Atoms are the most basic unit of matter. Two or more atoms from the same or different elements can combine to form molecules.
Cells are the most basic unit of life. Cells are made up of many different types of molecules. Which of the following accurately shows higher levels of organization within organisms, from least complex to most complex?
A. cells → organs → organ systems → tissues → organism
B. cells → tissues → organs → organ systems → organism
C. cells → organ systems → organs → tissues → organism
D. cells → organs → tissues → organ systems → organism
PLZ EXPLAIN WHY THE OTHER ANSWERS R INCORRECT
The student is studying the movement of substances across the cell membrane. She understands that some substances combine with special transport proteins to be carried across the cell membrane. The substances can move only from an area of higher concentration to one of lower concentration. This process is known as:
Answer:
Facilitated diffusion
Explanation:
Facilitated diffusion is the transport of hydrophilic molecules that can not freely cross the membrane. Channel protein and many carrier proteins are in charge of this transport. When uncharged molecules cross the membrane, they do it according to their concentration gradients, going from the more concentrated side to the lower concentrated one. When ions need to cross the membrane, the process depends on an electrochemical gradient.
Facilitated diffusion is a passive transport process because they only depend on electrochemical gradients, so they do not need any energy to occur.
An invasive species of Asian carp was introduced to the Mississippi River and have thrived. It threatens to eliminate many native species of fish. Which of these could be a contributing reason why?
A
The invasive species of fish lay many more eggs than the native species.
B
The invasive species of fish eat a greater variety of foods than native fish, destroying entire ecosystems.
C
The invasive species can survive in more extreme temperatures and water with a lower oxygen concentration.
D
All of these can be contributing reasons.
Answer:
D, they are all contributing reasons.
List two possible advantages of asexual reproduction to the organisms who reproduce sexually.
List two possible advantages of asexual reproduction to the organisms who reproduce sexually.
Well heelo there! i shall help chu! ^v^Asexual: Requires 1 organism.
Sexual: Requires 2 organisms.
The advantages of asexual reproduction are:It's fasterThere is more production Organisms that are born are exactly the sameI hope this helps! I apologize if i'm wrong // and your welcome if i'm correct!(-Side Note-): if you don't mind can you please mark me brainliest?
Help ASAP!!!
Which describes one effect of the sea level change that occurred during the last ice age?
Answer:
1
Explanation:
Mostly because it was the BIGGEST thing that really happend during said event. The others happend yes but not as majorly as number 1.
20 POINTS!
Its for a test!
Answer quick please
The two closely related are the golden jackal and the gray wolf. Hope this helps have a great day!
What is the most commonly seen trait in human and/or animals?
Answer:
language skills
Explanation:
State how the TR4 fungus threatens homeostasis within the banana plant
Answer: The Panama illness is a contagious illness that TR4, or Tropical Race 4, is a Fusarium wilt strain that kills banana plants. According to the ICA, the fungus “forms resistant structures that allow it to persist for more than 30 years,” making it tough to confine.
Explanation:
knowledge!