What helps substances cross the cell membrane during facilitated diffusion?
Choose 1 answer:
Cholesterol
B
Carbohydrates
Proteins
D
Water

Answers

Answer 1
Proteins
Channel proteins act as a bridge for molecules to pass through
Answer 2

Proteins help substances cross the cell membrane during facilitated diffusion. Thus option C is correct.

What are proteins?

Proteins are defined as large biomolecules and macromolecules and are made up of one or more extended chains of amino acid residues.

Protein play the important role in development of human body.

Proteins assist our body with cell regeneration and repair.

There are basically eight types of proteins.

Hormonal proteinEnzymatic proteinStructural proteinDefensive proteinStorage proteinTransport proteinReceptor proteinContractile protein

Thus, proteins help substances cross the cell membrane during facilitated diffusion. Thus option C is correct.

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Related Questions

A child is diagnosed with a rare genetic disease. Neither parent has the disease. How might the child have inherited the disorder?

Answers

Answer:

Recessive genes.

Explanation:

Both parents were likely carriers of the rare disease, but dominant traits allowed them not to be affected by it.

Which nucleotides can pair together? Select all that apply. adenine (A) & cytosine (C) cytosine (C) & guanine (G) cytosine (C) & thymine (T) adenine (A) & thymine (T) adenine (A) & guanine (G) thymine (T) & guanine (G)

Answers

A and T pair.
G and C pair.
These are the only possible pairs so the answer is the second pair and the fourth pair

The nucleotides which base pairs together in the DNA helix are adenine(A) to the thymine (T) and Cytosine(C) to the Guanine (G). A purine always base pairs against a pyrimidine.

What are nucleotides?

Nucleotides are the monomeric units of the genetic material i.e., DNA present in the nucleus of cell. Nucleotides are made up of three components which include a nitrogenous base, a deoxyribose sugar in case of DNA or a ribose sugar in case of RNA, and a phosphate group moiety.

The nitrogenous bases are of two types on the basis of their structures: Purines and Pyrimidines. Purines are double-ring structures which contain an imidazole ring attached to a pyrimidine ring. This include Adenine and Guanine. Pyrimidines are single-membranous structures which are similar to pyridine. Pyrimidines include cytosine, thymine and uracil. In DNA, thymine is present whereas in RNA, uracil is present.

A purine always base pairs with a pyrimidine. In case of DNA, an adenine forms two hydrogen bonds to base pair with thymine and vice versa whereas guanine forms three hydrogen bonds while pairing with cytosine residues and vice versa.

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What animals do whales have similar characteristics too?

A. Monkeys and Gorillas
B. Bison and Pigs
C. Sharks and barracudas

Answers

Answer:

Bison and Pigs

Explanation:

According to molecular evidence, the closest living relatives of whales are, quite surprisingly, the artiodactyls a group of hoofed animals

Hmm this is kind of tricky but I think the answer is B

What does the word "mutation" mean

Answers

Answer:

A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses

Explanation:

here is!!

Answer:

The action or process of mutating.

Approximately how many degrees does Earth
travel in its orbit in one month?
A. 1°
B. 15°
C. 30°
D 360°

Answers

Earth moves about 1 degree in one day. Multiply that by 30 days so the Earth moves about 30 degrees in one month.

True or false, in a food web, the arrows point from one organism to the organism it eats?

Answers

Answer:

False

Explanation:

In a food wed the arrows point to the animal that will eat the organism, it's pointing away from

Answer:

False

I hope this helps!

if the moms blood type is AA and the dads blood type is BB what will the kids blood type be

Answers

Answer:

AB

Explanation:

I think because i am pretty sure it'll be 50/50

AB two of them combine

(15 points) Aerobic cellular respiration takes place in the mitochondria and uses oxygen to break down glucose. However, when cells need large amounts of energy and no oxygen is available, anaerobic respiration can take place in the cytoplasm. What is the difference in the products of aerobic and anaerobic cellular respiration?

Answers

Answer:

There are two kinds of respiration: Aerobic and Anaerobic. ... Aerobic respiration takes place in the presence of oxygen, produces a large amount of energy. Carbon dioxide and water are produced as the waste products. Anaerobic respiration takes place without the use of oxygen, produces small amounts of energy.

Explanation:

I looked it up for u :D

Which of the following is the mean number per cross of F2 generation offspring that are the result of crossing over

Answers

Answer:

2.2

Explanation:

Since all of the mice in the F1 generation are heterozygous for both traits, they contain a copy of each on separate chromosomes. (AB on one from parent 1 and ab on the other from the parent 2.)  If these chromosomes split away from each other without crossing over, the F2 offspring can ONLY by AABB or aabb.  This means that any heterozygous combinations are the result of crossing over and must be counted.  When all are counted, we get a total of 11, or 2.2 per cross.

To calculate the mean number per cross of the offspring that result of crossing over, we need to make an addition of individuals that result from crossing-over, and divide the result by the number of crosses. The result is 2.2.

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

According to the statement, crosses were as follow

Cross 1) Between two true-breeding

Parentals)  LLBB    x    llbb

F1) 100%  LlBb

Cross 2) Between two dihybrids

Parentals)  LlBb    x    LlBb

The results of the F2 are

Phenotype                      Cross1     Cross2     Cross3     Cross4     Cross5    

Long-Black                         6              5               5                 6            7

Long-White                         1               1                0                 2           2

Short-Black                         0             2                1                  1             1

Short-White                        2              3                 3                2            2          

If there is no crossing-over, offspring will have the same chromosomes as parentals, which are Long-Black (LB) or Short-White (lb), because these chromosomes separate without interchanging segments.

However, if there is crossing over, these chromosomes interchange segments, and the result is Long-White (Lb) and short-black (lB).

So now, we need to count how many individuals from the F2 are a result of crossing-over.

       Phenotype         Cross1   Cross2   Cross3   Cross4   Cross5     Total    

Long-White           1              1              0             2           2              6Short-Black           0             2             1              1             1             5          

                                                                                                                  11

Eleven individuals result from crossing over. But we need to calculate the mean number per cross.

So, since there are 5 crosses, we need to divide the total number of individuals that are the result of crossing over by the total number of crosses.

total number of individuals = 11total number of crosses = 5

Mean number per cross of F2 generation ⇒  11/5 = 2.2

The mean number per cross of F2 generation offspring that are the result of crossing over is 2.2

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

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Which of the following is true about RNA?

tRNA brings in an amino acid and bonds with mRNA

mRNA carries the code of rRNA to the nucleus.

mRNA is made from tRNA during transcription.

rRNA helps tRNA make a copy of the DNA gene.

Answers

Answer:

the right answer is

tRNA bonds with mRNA, bringing in amino acids.

Explanation:

Ribonucleic acid is a single-stranded structure. The true statement is tRNA brings in an amino acid and bonds with mRNA. Therefore, the correct answer is option 1.

The Transfer RNA, or tRNA, transports amino acids to the ribosomes, the cell's protein-making factories, during the synthesis of proteins. An anticodon, which is a particular set of nucleotides on each tRNA molecule, is complementary to the codon on the mRNA (messenger RNA) molecule. From the DNA in the nucleus to the ribosomes in the cytoplasm, the mRNA transports the genetic information.

The tRNA with the complementary anticodon brings in the exact amino acid that is coded by that codon when the ribosomes read the codon on the mRNA. In order for the ribosomes to assemble the amino acids into a protein chain in the proper sequence, the tRNA molecule then forms a connection with the mRNA.

Therefore, the correct answer is tRNA brings in an amino acid and bonds with mRNA, i.e. Option 1.

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Which of the following is NOT present in both prokaryotes and
eukaryotes? *
Presence of a Golgi body
Presence of DNA
Ability to maintain homeostasis
Ability to produce ribosomes

Answers

Answer:

Prokaryotes do not have a golgi

Explanation:

eukaryotes have a Golgi apparatus but prokaryotes do not

suggest why digestion (the breakdown of large macromolecules) is largely performed by extracellular enzymes

Answers

Answer:

Enzymes speed up the breakdown of macromolecules in food to small molecules

Explanation:

During digestion, the macromolecules that make up food are hydrolyzed by digestive juices to molecules of a size that allows their absorption through the lumen of the tract. In this way, proteins are divided into amino acids, carbohydrates into glucose and other monosaccharides, and fats into glycerol and fatty acids. Digestion and absorption take place mainly in the small intestine.The production of extracellular enzymes that, once released into the medium, degrade the substrate and then allow their diffusion / transport.

PLEASE HELP :)
What knowledge can you gain from science courses that you can apply in life?

Answers

You can learn about space and become work for nasa or study cures.

You can learn anatomy and help animals if you wanna be a vet

Prokaryotic cells are defined as those cells which do not have a(n) ___.

Answers

Answer:

nucleus

Explanation:

Question 4 (1 point)
Why does Rachel Skinner think delivering the coronavirus vaccine will be a challenge?
b
Needles cannot be used to give people the coronavirus vaccine
It will need to be given to elderly people who have delicate skin,
The microneedle patch still needs to be tested in clinical trials.
Many people will need to be vaccinated in a short period of time,
Od

Answers

Answer:

I believe the answer is D.

Explanation:

I believe the biggest challenge will be getting everyone vaccinated and in a short period of time.

if there was no glucose available for plant and animal cells what would happen?

Answers

Answer:

Glucose is a sugar that many plants, animals and fungi use for energy. In plants, glucose is produced as a result of photosynthesis. Plants need the energy glucose provides in order to grow and reproduce. ... Without glucose, plants would not have the energy necessary to grow, reproduce or carry out cellular respiration.

Explanation:

UwU Hope I helped

Which of the following best describes the relationship between variations and adaptations?
A)All variations are adaptations, but not all adaptations come from variations
B)All adaptations are variations and all variations help organisms survive
C)Variations result from adaptations organisms make to the environment
D)Adaptations result from variations only if they help an organism survive

Answers

Answer:

B

Explanation:

Adaptations result from variations that help an organism to survive better in the environment. Option D is correct

Adaptation:

It is the physical changes in the organisms that increase the chance of survival.

Variation:

They are the traits that are found in the population that are caused by

genetic mutation.

For example- Coat color of Rabbit:

If it is brown color this can help rabbit to hide himself, but there are other colors also that are variation.

Therefore, adaptations result from variations that help an organism to survive better in the environment. Option D is correct.

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Carbohydrates are made up of the following elements?
Nitrogen
Carbon
Hydrogen
Oxygen

Answers

Answer:carbon

Explanation:

Awnser:

Carbon is the awnser

3. What can you say about the general relationship of the charge of the anion to the subscript of the cation?

Answers

Answer:

Cations are positively charged ion while anions are negatively charged ions formed by loosing and gaining of electrons respectively. Transition metals are metals in the middle of the periodic table with multiple oxidation states. The charge on the transition metal is equal to the oxidation state which varies from +1 to +7. The charge of transition metal can also be determined in neutral compound as long as one knows the charge or the oxidation state of the other atom in the compound. The charge of transition can also be determined in the case of neutral complexes where the transition element has combined with other atoms to form molecular complexes that are either positively or negatively charged, e.g. MnO4-. Lastly Neutral transition metal compounds which are soluble in water have a charge of +3 or less than+3.

Cations are positively charged particles and anions are negatively charged elements.

What are cations?

Anions are negatively charged ions created by losing and receiving electrons, whereas cations are positively charged ions. Transition metals are middle-of-the-periodic-table metals with a variety of oxidation states.

The oxidation state, which ranges from +1 to +7, is equivalent to the charge on the transition metal. As long as one is aware of the charge or oxidation state of the other atom in the compound, one may also determine the charge of a transition metal in a neutral compound.

When the transition element has joined with other atoms to form neutral molecular complexes that are positively or negatively charged, such as MnO4-, it is also possible to detect the charge of the transition.

Therefore, Cations are positively charged particles and anions are negatively charged elements.

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2. In which leaf layer does most photosynthesis occur?

Answers

Photosynthesis occurs through the stomata of leaves

A biology class wanted to study the effect of different materials on the melting rate of ice. They placed pieces of ice, each with a mass of 10g, onto trays. Group 1 was covered in plastic, group 2 was covered in paper, group 3 was covered in aluminum, and group 4 remained uncovered. Each piece of ice was allowed to melt for 15 minutes. Then final mass of the ice, minus the melted water, was recorded at the end of the experiment. Which of the following is the control group in this experiment? Choose 1 answer: Choose 1 answer: (Choice A) A Group 2 (Choice B) B Group 4 (Choice C) C Group 1 (Choice D) D Group 3

Answers

Answer:

CHOICE B, GROUP 4.

Explanation:

THIS IS THE CONTROL GROUP BECUASE THEIR ICE WAS UNCOVERED AND HAD NOTHING EFFECTING IT'S MELT TIME.

Answer:

group 4

Explanation:

EASY BIO QUESTION
15 PTS WILL MARK BRAINLIEST

Which is the best description of carbohydrates?

biomolecules made up of amino acids
biomolecules made up of nucleic acids
hydrophilic molecules that provide energy for the body
hydrophilic molecules that are part of the cell membrane

Answers

I would say hydrophilic molecules that provide energy for the body. Hope it helps!

Answer:

hydrophilic molecules that provide energy to the body.

Explanation:

because looked in my study book, then asked my teacher.

ribose sugar is used to make nucleic acid however, it is not formed directly in photosynthesis but is formed from glucose. How does glucose form ribose?

Answers

Answer: Ribose is synthesized from glucose and other monosaccharide molecules in living cells by a process known as pentose phosphate pathway. The pentose phosphate pathway is a series of chemical reactions taking place in the cytosol of cells.

Glucose forms ribose through a series of chemical reactions, including the conversion of glucose-6-phosphate to ribose-5-phosphate.

What is ribose sugar?

Ribose sugar is a five-carbon sugar molecule that is an important building block of nucleic acids, such as RNA and DNA. It is a type of carbohydrate and is structurally similar to glucose, but has a different chemical arrangement.

Ribose is synthesized in the body through a series of metabolic reactions, starting with glucose, and is also found in some natural sources such as ribose supplements. It is important for the production of energy in cells, the regulation of gene expression, and the synthesis of nucleotides.

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Which of the following is true about multicellular organisms?




Their cells are all exact copies


Their cells are prokaryotic

Their cells can all switch to the same cell type

Their cells can be specialized for specific functions

Answers

Answer:

Cells can be specialized for specific functions.

Explanation:

I hope that helps

Can someone please help me. WILL MARK U BRAINLIEST!!!

Answers

Answer:

1) is answer A

2)B

3) D

Explanation:

PLSSS HELP ILL GIVE 100 POINTS PLSSS HELPPP
Include a Claim, Evidence, Explanation, and Conclusion for full credit.

Cells were obtained from a patient with a viral infection. The DNA extracted from these cells consisted of two forms: double-stranded human DNA and single-stranded viral DNA. The base composition of these two forms of DNA are shown in the image.

Construct an argument based on evidence to determine which form was the viral DNA and which form was the human DNA.

Answers

Answer:

TGCA

Explanation:

Which answer choice has the correct information?

Group of answer choices

1 Ly = 9.5 trillion km,1 AU = Distance from Earth to Sun (150,000 million Km)

1 Ly = 9.4 trillion km; 1 AU = Distance from Earth to Moon (150,000 million Km)

1 Ly = 9.5 trillion miles,1 AU = Distance from Earth to Sun (150,000 million Km)

1 Ly = 9.5 trillion miles, 1 AU Distance from Earth to Moon (150,000 million Km)

Answers

Answer:

 1 ly = 9433962264150.9 km

Need help placing the rest of these plz.

Answers

So the first one goes in the first spot then it’s D

what do we call gut friendly microorganisms that live in the intestines and help with digestion?
E. coli
probiotics
enzymes
HCI

Answers

Answer:

Enzymes

Explanation:

HELP ASAP!!!!!!!

Fill in the blank ​

Answers

63 in water 100/g KNO3 Potassium nitrate
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A professional soccer player has a large collection of headbands in their wardrobe comprised of five different colours. The headbands can only be distinguished by their colour. If the soccer player grabs four headbands from their wardrobe for an upcoming soccer tournament, how many possible outcomes are there Which triangle is similar to the triangle T Find the value of -|-2 + 9|A. 7B. -11C. -7 Luther Corporation Consolidated Income Statement Year ended December 31 (in $ millions) 2009 2008 Total sales 610.1 578.3 Cost of sales (500.2) (481.9) Gross profit 109.9 96.4 Selling, general, and administrative expenses (40.5) (39.0) Research and development (24.6) (22.8) Depreciation and amortization (3.6) (3.3) Operating income 41.2 31.3 Other income --- --- Earnings before interest and taxes (EBIT) 41.2 31.3 Interest income (expense) (25.1) (15.8) Pre-tax income 16.1 15.5 Taxes (5.5) (5.3) Net income 10.6 10.2 Price per share $16 $15 Shares outstanding (millions) 10.2 8.0 Stock options outstanding (millions) 0.3 0.2 Stockholders' Equity 126.6 63.6 Total Liabilities and Stockholders' Equity 533.1 386.7 Luther's Operating Margin for the year ending December 31, 2008 is closest to: At dawn, Circe sent a favorable wind to take them on their way. But Odysseus was filled with fear at what Circe had told him.I must warn my men, he thought. They must all know what to do when danger strikes.He called his men to him and told them what Circe had said. Soon we shall hear womens voices singing, he said. These are the Sirens. They use their divine song to attract sailors to come too close. Then their ships are smashed against the rocks. You shall plug your ears with beeswax. But, I confess, I should like to hear their song. You must tie me to the mast and refuse to release me if I ask.The OdysseyWhich line from the passage supports the idea that the Greeks believed that gods were responsible for the weather?At dawn, Circe sent a favorable wind to take them on their way.They must all know what to do when danger strikes.They use their divine song to attract sailors to come too close.Then their ships are smashed against the rocks. This sentence is from the passage.ofofble,"Gravity dictates the rhythm of the cosmic dance that istirelessly and meticulously executed by billions uponbillions of cosmic inhabitants, from asteroids to planetsto stars to galaxies." (Paragraph 2)ISWhich sentence best expresses how the author useslanguage to make a point about gravity? Here a easy question for 20 points Which event is associated with convergent boundaries?formation of island chainscreation of mid-ocean ridgescreation of convection currentsformation of rift valleys 2)3)L-10O-74513 werelerQuestion 4Read the paragraph. Choose the BEST meaning of "They have a lot ofheart."They hove many remarkabletalentsIt was a mean remark, but Astrid didn't let it ruffleher feathers. She threw Leda a cool, calm glance,"I'm proud of my team," she said. "They have a lotof heart. Nothing will stop them from trying. Andwinning!" saying it helped her believe it Andbesides, Leda had just given her an idea, Astrid hadfelt all along that the Flying Meteors had aweakness, but she couldn't put her finger on it. Nowshe knew erectly what it wasThey care greatly and won't giveupThey are very sweet and kind.They have strong, healthy hearts in the next section use the present tense to fill in the blank according to the subject Which sentence best express a potential theme in the poem My Father Is a Simple Man A.Children should prepare for their parents death.B.Younger people cant benefit from spending time with older people.C. Greatness can be found in everyday lives.D. Sons should admire their fathers 2 = 4x. And. 36/a=6 X=? A=? PLEASE HELP ME QUICKLY (select all that apply) Enzymes made by extremophiles can be harvested and used in everyday applications. These uses includemaking laundry detergents.making dish detergents.recycling old tires.de-hairing hides.making paper. |-1|>1/2 is this true number sentence What three principles did delegates at the Constitutional Convention want to include? Tyson is 6 feet 2 inches tall. There are 2.54 centimeters in 1 inch. What is Tyson's height in centimeters?A. 20.32 cmB. 187.96 cmC. 177.80 cmD. 15.78 cm 47.The excerpt supports the conclusion that Jefferson disagreed with - Simon Schama identified four elements to the new revolutionary state and comments that the items on that list "could equally describe the France of Louis XIV." Give one specific example from any of those four elements that were true in Louis XIV's France. By the 1900 Germanys steel production exceeded all countries exceptBritain The United StatesBelgium Italy