What colour does the iodine go when placed on a leaf that does not contain starch

Answers

Answer 1

Answer:

It goes blue/black if starch isn't present.

Explanation:

Answer 2
In the presence of starch, iodine turns to a blue/black colour. When starch is absent, iodine solution remains yellow/brown.

Related Questions

why was their more islands in cape cod in 2014 than in 1984

Answers

Answer:

The lowering water is causing the underwater lands to be exposed to the surface of the sea level.

Explanation:

Hope this helps! :)

How the disease Diabetes challenges our body’s ability to maintain homeostasis.

Answers

Answer:

diabetes is bad diseases that causes you to eat less sugar

called CF is a condition that causes excess mucus production in the lungs and if untreated causes early death. CF is caused by a deletion of 3 letters in the gene sequence. How might this deletion cause excessive mucus production?

Answers

Answer:

The correct answer is - by absorbing too much sodium and water into the cells in the respiratory system.

Explanation:

Cystic fibrosis or CF is a genetic disorder that is caused by the presence of two defective genes that leads to the production of thick and sticky mucus in an individual that affects the respiratory and digestive system by clogging mucus in it.

Due to defective genes, there is an abnormal electrolyte transport system develops in which cells of the respiratory system including the lungs absorb an excessive amount of salt (sodium) and water. It all caused by deletion of the three letters which means an amino acid from a gene that leads to the disruption of the protein that controls the production of the mucus and abnormal electrolyte transport.

Read the statement.

In a food chain, algae carry out photosynthesis, which produces their food. Some small fish feed on the algae. Seabirds then feed on those small fish.

Which statement correctly describes this food chain?
Select one:

The seabirds are the producers.

The fish are the primary consumers.

The seabirds are the primary consumers.

The fish are the producers.
help!

Answers

Answer:

option B ,is correct answer of this question

Answer:

B

Explanation:

How, do humans use mineral and
Energy resources?
A. Environmental protection
B. To build machinery
C. Industrial purposes and crop
irrigation
D.
To discover new elements

Answers

I think the answer is c

PLEASE HELP

Velocity is _________________ Question 3 options: The rate an object moves in a certain direction, in relation to the reference point. The amount of time it takes an object to move from point A to point B. The measuring scale used when describing the thrust need to lift a rocket The displacement an object displays between it’s starting point and end point.

Answers

Answer:

The amount of time it takes an object to move from point A to point B.

Explanation:

Can I get Brainliest

Velocity is The amount of time it takes an object to move from point A to point B. Therefore, option B is correct.

What is velocity?

When an item is moving, its velocity is the rate at which it is changing position as seen from a particular point of view and as measured by a certain unit of time. The meter per second (m/s) is the accepted unit of velocity magnitude (also known as speed). The various forms of velocities include uniform, variable, average, and instantaneous velocities.

There are countless practical uses for velocity, but one of the more frequent ones is figuring out how quickly you (or anything in motion) will get somewhere from somewhere.

Velocity is The amount of time it takes an object to move from point A to point B. Therefore, option B is correct.

Learn more about velocity, here:

https://brainly.com/question/28738284

#SPJ6

Which of the following best describes the process of protein synthesis?
Group of answer choices

Amino acids are translated from mRNA, then mRNA is transcribed back into DNA

DNA is transcribed into mRNA, then mRNA leaves the nucleus to go to the ribosomes for translation

mRNA stays in the nucleus, which is where DNA is transcribed into amino acids. The amino acid then go to the ribosome to build proteins.

DNA leaves the nucleus through transcription and goes to the ribosome, where it is translated into amino acids

Answers

Id say the last one, but I’m not entirely sure

What pigment absorbs sunlight for photosynthesis?

A. chloroplast
B. thylakoid
C. grana
D. chlorophyll

Answers

D . Chlorophyll is the answer

The prefix exo- means “out of” and the prefix endo- means “taking in”. How do these meanings relate to the meaning of exocytosis and endocytosis?

Answers

Answer:

Cytosis is is the transportion of large quantities of molecules into and out of cells. If exo means out of, that means the molecules are moving out of the cell. Endocytosis is when molecules move into the cell.

Explanation:

Answer:

The prefix “endo” means

✔ in

.

The prefix “exo” means

✔ out

.

✔ Homeostasis

is the state of maintaining a stable internal environment despite changing external conditions.

for yall on egde.

Explanation:

Please help!!! I don't know how to tell if they self pollinate or not.

Answers

Answer:

The first flower can self pollinate because it is open, so the wind will pollinate it.

Explanation: Flower b will not self pollinate because it is not open, so it will not pollinate until a bird or moose or any other animal comes and eats it, then poops it out, so the seeds get planted.

Is mitosis essential to life?

Answers

Answer:

Yes

Explanation:

in order for you to fully function and stay alive the cells need to be replaced. mitosis is the reason we can grow, heal wounds, replace damaged body parts and cells. It also helps with organisms that reproduce.

Rock layers showing ripple marks cross-bedding and fossil shells indicate that these layers were formed

a.) From solidification of molten material.
b.) From deposits left by a continental ice sheet.
c.) By high temperature and pressure
d.) By deposition of sediments in a shallow area

Answers

Answer:

d) By deposition of sediments in a shallow area

Explanation:

Deposition is the deposition of wind, water or ice sediments. The sediment may be shipped in the form of steaks, sand & mud or water-dissolved salts.

Sediment accumulation can be seen everywhere in the water chain, from ponds, reservoirs, deltas and floodplains to high mountain rivers.

1. Ultimately, is Hydraulic Fracturing socially responsible? Does Marginal Social Benefit (MSB) =
Marginal Social Cost (MSC)? Explain your answer with details from your reading.

Answers

Answer: Yes as the damage is minimal, I don't have your reading but the research is out there.

Explanation:

describe how cell structures and organelles interact systemically to maintain or restore homeostasis in the body​

Answers

Each organelle, in a cell, works with all of the other organelles to maintain balance, or homeostasis. The organelles have specific functions such as the mitochondria, which create energy, and the ribosome, which translates RNA into proteins. Because these cells work together, the body is able to maintain homeostasis.

cómo es la parte exterior del planeta tierra​

Answers

Un planeta cuya órbita se encuentra fuera del cinturón de asteroides se llama planeta exterior.
Ejemplos: Júpiter, Saturno, Urano y Neptuno

What is the function of spindle fibers during cell division?

Answers

Spindle fibers move the chromosomes during mitosis and meiosis to ensure even chromosome distribution between daughter cells.
I believe spindle fibers moves the organelles around

Science - SC3206 - TAL
Which statements describe vascular tissue? Check all that apply.
The primary purpose of vascular tissue is to support the plant and help it stand upright,
Phloem carries food made during photosynthesis to other parts of the plant,
Phloem contains the chloroplasts,
Xylem moves water and nutrients throughout the plant,
Xylem is the protective, waxy layer on a plant that prevents water loss,

Answers

Answer:

B

Explanation:

As I think second statement describes vascular tissue.

Answer: b and d

Explanation:

Which of the following is produced by the immune system to identify foreign cells?
antibodies
antigens
bacteria
colored dye

Answers

Answer:

im pretty sure its antibodies

Explanation:

Answer:

1sy option

Explanation:

edge 2021 :p

0. During Calvin cycle, it takes 3 turns to produce 6 molecules of glyceraldehyde-3-phosphate where 5 molecules

proceeds for the regeneration of RuBP and 1 molecule is use for the synthesis of what molecule?

A. RuBP C. 2,3—PGA

B. Oxygen D. Glucose

11. The best explanation of the equation in an aerobic respiration.

A. Glucose is oxidized to produce the energy

B. Oxygen oxidizes glucose to produce CO2, H2O and Energy

C. Glucose plus the presence of oxygen produces the energy needed by the organism

D. The oxidation of glucose produces energy as the product and molecules of CO2 and H2O as a by-product

12. What is the importance of anaerobic respiration?

A. produces lactic acid needed by the organism

B. provides the right energy needed by the organism

C. the failed—play safe of organisms when aerobic respiration takes all the oxygen supply to be used during

strenuous activities

D. all of the above

13. The obvious difference of aerobic and anaerobic respiration is the presence of oxygen in the process and the

products they produce. This means that

A. NADH for aerobic and NADPH for anaerobic respiration

B. ATP is produced during aerobic respiration and ADP for anaerobic respiration

C. ATP is the product of aerobic respiration and NADH is the product of anaerobic respiration

D. ATP is the product of aerobic respiration and Lactic acid for anaerobic respiration to be utilize by the organism​

Answers

Answer:

10) glucose

11)The oxidation of glucose produces energy as the product and molecules of CO2 and H2O as a by-product

12)the failed—play safe of organisms when aerobic respiration takes all the oxygen supply to be used during

13)ATP is the product of aerobic respiration and Lactic acid for anaerobic respiration to be utilize by the organism

Why are reproductive technologies important to some infertile couples?

Answers

If a couple can not conceive a child certain reproductive technologies can help them be able to have children

Negative feedback: If the body temperature is high, the rate of perspiration (sweat) should
A. increase
B. decrease​

Answers

Answer:

I believe it would decrease

Explanation:

The high temperature will be detected by sensors—primarily nerve cells with endings in your skin and brain—and relayed to a temperature-regulatory control center in your brain. The control center will process the information and activate effectors—such as the sweat glands—whose job is to oppose the stimulus by bringing body temperature down.

I believe it actually increases. For example when you have a fever your body temperature is higher so you feel hot. When your hot you sweat to cool off in a way.

Natural selection explains how _________________ change as their environments change.

Answers

Answer:-
Individuals/living organisms

However to be specific as in Charles Darwin’s theory he mentioned finches and later this was observed in moths as well as mice

Explain in your own words why a dominant trait is not always a common trait.

Answers

Answer:

Describing a trait as dominant does not mean it is the most common; it means that it is expressed over the recessive trait. For example, tongue rolling is a dominant trait, controlled by the dominant version of a particular gene (R). Individuals with one or two copies of R will exhibit tongue rolling.

Which climate is a subcategory of temperate marine climates? O arid
O humid subtropical O humid continental O tundra​

Answers

Answer: Humid subtropical

Explanation: There are three kinds of temperate marine climates: marine west coast, humid subtropical, and mediterranean. Marine west coast climates are the coolest temperate marine climates. Humid ocean air brings cool, rainy summers and mild, rainy winters. Mediterranean climates are drier and warmer.

Answer:

B is your answer

Explanation:

Eukaryotic cells grow and divide through a series of events called the
cell cycle as shown in the diagram below. Based on the information
provided, what are the three main phases of the cell cycle?

Answers

Answer:

Please, you stated : "Eukaryotic cells grow and divide through a series of events called the cell cycle as shown in the diagram below." what diagram???

Figure 1 shows red blood cells that have been placed in isotonic, hypotonic, and hypertonic solutions. Osmotic pressure causes changes in the red blood cells. Determine which type of solution is in A, B, and C and describe what is happening to the cells.

Answers

A is hypertonic so water is leaving the cell going into the solution, the cell shrinks. B is isotonic so there is no net transfer of water. C is hypotonic so water is entering the cell from the solution, the cell expands and can rupture.

Cystic Fibrosis is a genetic disease of the lungs caused by a recessive allele. A man with Cystic Fibrosis marries a woman who does not have Cystic Fibrosis, but her father had the disease. What is the probability of the couple having a child that has Cystic Fibrosis?

Answers

Answer:

If only one of you is found to be a carrier, the chance that you will have a child with CF is very low, although not completely eliminated. If you are both carriers, each pregnancy will have a 1 in 4, or 25 percent chance of being affected with cystic fibrosis.

A train car is to train as a __ is to a polymer.
a. polymerization.
b. monomer
c. polypeptide.
d. protein.

Answers

Answer:

Answer is B monomer as multiple monomers makes up polymers

It would have to be B. Monomer

Help me describe how these protists feed, move, and reproduce.

A plant-like protist
A fungus-like protist
Ciliophoran
Zooflagellate
Sarcodinian
Sporozoan

Answers

Explanation:

Protists are mostly one-celled organisms. Some make

their own food, but most take in or absorb food. Most

protists move with the help of flagella, pseudopods, or

cilia. Some protists, like the one-celled amoeba and paramecium, feed on other

organisms.

Fungus-like protists share many features with fungi. Like fungi, they are heterotrophs, meaning they must obtain food outside themselves. They also have cell walls and reproduce by forming spores.

Ciliates reproduce asexually by division: the micronucleus undergoes mitosis, while in most ciliates the macronucleus simply pinches apart into two. This process is shown in the drawing above. However, ciliates also reproduce sexually, through a process known as conjugation. Conjugation is often induced by lack of food. Two ciliates of opposite mating types come close together and form a cytoplasmic bridge between the two cells; the micromuclei divide by meiosis, the macronuclei disintegrate, and the conjugating cells exchange haploid micronuclei over the cytoplasmic connection. They then separate, reform new macronuclei from their micronuclei, and divide, but remember that the essence of sexual reproduction is forming a new organism from the combined genetic material of parents. After conjugation, each ciliate partner has acquired new genetic material, and divides to give rise to progeny with a new combination of genes. This is essential to the survival of ciliate lineages; most ciliates cannot reproduce indefinitely by asexual fission, and eventually die out if prohibited from conjugating.

One convenient way to categorize protozoans is by how they move. Some move rapidly, while others creep slowly. Still others are not capable of active movement at all, but instead rely on a host organism to supply their food.

Protozoans With Flagella

Zooflagellates (zoh oh FLAJ uh lits) move by means of one or more flagella. (Recall from Chapter 6 that flagella are long, thin, whip-like cellular projections.) Zooflagellates generally reproduce asexually by binary fission. Recall that asexual reproduction results in genetically identical offspring.

Sarcodines reproduce sexually by syngamy (fusion of two gametes) and asexually by division or budding. In multinucleate forms, cytoplasmic division with distribution of the nuclei occurs.Members of the phylum Sarcodina are ameboid. They move about by using pseudopods and usually eat by phagocytosing food particles, usually bacteria. Some amoeba form calcium carbonate or silica skeletons called tests to protect themselves.

The sporozoans are able to form spore-like cells, from which they get their name. Sporozoans do not have flagella, cilia, or pseudopodia. They are capable of gliding movements. ... The apical complex secretes enzymes which allow the sporozoan to enter a host cell.Apicomplexan, also called sporozoan, any protozoan of the (typically) spore-producing phylum Apicomplexa, which is called by some authorities Sporozoa. ... Apicomplexans feed by absorbing either dissolved food ingested by the host (saprozoic nutrition) or the host's cytoplasm and body fluids.Protozoa reproduce asexually by fission, schizogony, or budding. Some protozoa can also reproduce sexually. Relatively few protozoa cause disease

How many atoms are in this picture?
Na3C6H507

Answers

Answer:

Explanation:

Trisodium citrate has the chemical formula of Na3C6H5O7. It is sometimes referred to simply as "sodium citrate", though sodium citrate can refer to any of the three sodium salts of citric acid. It possesses a saline, mildly tart flavor. It is mildly basic and can be used along with citric acid to make biologically compatible buffers

Sodium citrate is chiefly used as a food additive, usually for flavor or as a preservative. Its E number is E331. Sodium citrate is employed as a flavoring agent in certain varieties of club soda. It is common as an ingredient in bratwurst, and is also used in commercial ready-to-drink beverages and drink mixes, contributing a tart flavor. It is found in gelatin mix[clarification needed], ice cream, yogurt, jams, sweets, milk powder, processed cheeses, carbonated beverages, and wine[citation needed], amongst others.

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Anthony is buying a new TV that is 25% off. The original price of the TV was $390.Which answer gives the best estimate for the TV's price after the discount?$390$365$300$100 Last week, a pharmacy sold a bottle of shampoo for $5.00. This week, the shampoo sells for $6.50. By what percent did price increase?how would we find the original price if we know the sale price and the % of savings? Greta currently works 45 hours per week and earns a weekly salary of $729. Shewill soon be starting a new job where her salary will be increased by 10% and her hours reduced by 10%.How much more will she be earning per hour at her new job?PLEASE SHOW YOUR WORK!! What happened to President Nixon after the Supreme Courts ruling in United States v. Nixon? Given the function f(x) =2x+5 what would the output be with an input of 6? When supporting your claim for analyzing an argument, or speaker, it is an expectation that you will write at least one well supported paragraph. True False Write the complementary RNA strand for the following DNA strand. TAC ACC TTG ACG What are the roles of a decomposer? Check all that apply.1) Decomposers kill harmful microorganisms.2) Decomposers break down waste and dead organisms.3) Decomposers provide oxygen to the atmosphere.4) Decomposers convert sunlight into food energy.5) Decomposers recycle nutrients in the environment. If -10x+3y = 9 and -4x+7y =1 are true equations,what would be the value of -6x-4y What does this diary entry suggest about US mobilization during the war? O Most American training camps had closed by the spring of 1918. O Americans continued to receive combat training late into the war. Other Allied Powers did not take part in the training of American troops. American troops had little interaction with their European counterparts. Jenny bought scrapbooking supplies for $145.00. She paid $11.60 in sales tax. What was the sales tax rate on the supplies? If necessary, round your answer to the nearest tenth. a) 7% b) 8% c) 9% d) 7.5% What evidence from the passage best supports the inference that sugar cane had special significance in the ancient era? Select three options. "you lie down and face a three-cornered fire pot" "sugar cane was now an ingredient in ceremonies involving fire" "it crystallized into sweet, dark brown clumps" Perhaps that transformation itself seemed magical "sugar cane is called ikshu, which means 'something that people want'" "they began to use the name sharkara, which also meant 'gravel'" please help me will give brainliest Which of the following was a negative consequence of trade routes across Asia, Europe, and Africa?Many wars were fought to gain control of trade routes.Diseases were often spread along trade routes.Isolated cultures learned about new goods and ideas.Increased supply of available goods raised the cost of many items. The French conquered many colonies and forced the citizens of these new places to practice French language and culture, this is an example of which type of rule? HELP ASSAP I need help on this question can someone. help me solve this pls . say you have a good friend or family member that you love, and they are a heavy smoker. Describe in your post how you might convince them to quit. Be sure to provide evidence, which might include some examples of diseases caused by smoking. Gotem will make you BRAINLIEST!In the United States, no federal law requires public schools to teach physical education (PE). Implementing PE in public schools is the responsibility of each of the 50 states. Some states and school districts are making PE optional, not mandatory, for students. Such decisions are driven in part by budget cuts and efforts to raise student test scores in core academic subjects such as reading and math. Some school districts have even cut traditional PE altogether.Do you believe that cutting or reducing the amount of PE in schools in favor of core academic subjects is a good idea? Why or why not? Use specific case studies and facts to support your opinion.Should the federal government offer incentives to states to increase the number of students participating in regular physical activity? Why or why not? If so, what might the incentive plan look like? 10+ sentences