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

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.

Fermentation can take place in organisms
like yeast and in our muscles. What are
the products for each?

Answers

fermentation occurs in some strains of bacteria and in skeletal muscle and produces lactic acid

Why is a feather non living? Give detailed explanation. Thanks

Answers

Answer:

feathers are dead tissues. They are only alive while developing as they have a blood supply. Feathers are produced by living cells located in small pit-like follicles in a bird's epidermis, its outer skin layer. The feather is enlarged by the keratin that is protruding straight out from the skin follicle. In order for something to be classified as anything that was never alive

Explanation:

feathers are non-living because theyre dead tissues. theyre produced by living cells in a bird epidermis and as it reaches full size, the blood supply is cut off and the feather is fully functional but non-living

have you ever heard that a potato is a starchy vegetable? starch is a carbohydrate like the sugars, glucose, sucrose and lactose. how did this plant form the starch that is in the potatoes?

Answers

Answer:

co2

Explanation:

Consider the way living things are organized. What are the two levels of organization just after atoms? (5 points)
Tissues and organs
Molecules and cells
Organs and organ systems
Organ systems and organism

Answers

Answer:

Molecules and cells

Explanation:

Tissues and organs are too large to be right after atoms, along with organs and organ systems, and organ systems and organisms, leaving molecules and cells as your answer.

What is the name given to the pair of chromosomes that are the same in
which one comes from the mother and the other comes from the father?

Answers

Mother X
Father X or Y

what is the one thing that makes the different types of light different from one another?

Answers

Answer:

Things that make the different types of light different from wachother are their names, and the length of their wavelengths (hope this helps)

Explanation:

In which way is cellular respiration similar to photosynthesis?
a. they both make G3P
b. the both involve ATP
c. the they both involve chemiosmosis
d. all of the above

Answers

Answer:

if I am correct it would be b

Explanation:

Please help !!! For 10 points

Answers

This is in the sexual reproduction section
Chicken reproduce by laying eggs, Amoebae reproduce by dividing two cells

This is in the asexual reproduction
Cherry trees can be grown from cherry seeds, pineapple plants can be grown from stem settings, and hydras reproduce by budding
Hope that helped

In what part of the cell does fermentation occur?

Answers

Answer:

cytoplasm

Explanation:

As with glycolysis, fermentation takes place in the cytoplasm of the cell. There are two different forms of fermentation—lactic acid fermentation and alcoholic fermentation.

Help please:))) I will give u brainlist:))

Answers

Answer:

Help the plant better :))

Explanation:

This diagram represents the cell cycle. When cells leave the cell cycle, they exit during G1 phase and then enter G0 phase, a resting period. Most normal cells can leave G0 phase and reenter the cell cycle at G1 phase before entering S phase. Cancer cells are different because they cannot enter G0 phase and are likely to do which of the following?
A Fail to complete S phase
B Continuous unregulated cell division
C Mutate during G phase
D Die after completing mitosis

Answers

I think it is C if I am wrong tell me.

true or false: Galaxies formed straight away after the big bang

Answers

Answer:

False

Explanation:

Please help me ASAP!!!

Answers

Answer:

The kinetic theory of matter says that the more the particles are moving, the more kinetic energy they have.

Explanation:

Kinetic energy is energy which a body possesses by virtue of being in motion.

What the person above me said<3

(NEED ASAP!) how does crossing over during meiosis allow for genetic variablity?

Answers

Homologous chromosomes pair, then the chromosomes cross over in certain points. Then the Chromosomes break up and then pair again which results in different genes since they traded. Which is the result of genetic variability.

How small are we in the scale of the universe

Answers

Answer:

46.5 billion light years

Answer:

The universe houses about 30-billion-trillion stars; that is 30,000,000,000,000,000,000,000 stars! The Earth is about 3.5 million times larger than a human. The Solar System is about 36 billion times larger than Earth.

Explanation:

Hope this helped plz mark brainliest :))

the division of the cytoplasm of a eukaryotic cell is called

Answers

Answer:

Cytokinesis

Explanation:

Cytokinesis is the answer

Which of the following describes the relationship between structure and function? The tails on sperm cells help them swim to the egg cell. The heart pumps blood through the body. The skin is made of many different layers​

Answers

Answer:

Function of the heart pumps blood through the body. So it is the answer.

Explanation:

How do the nutrients necessary for plant growth get into the soil?
O The soil absorbs sunlight.
Water filters through the soil.
Organic matter is decayed in the soil.
The soil is exposed to air.

Answers

I believe it is Organic matter is decayed in the soil because plants get their nutrients from animal waste and dead organisms.

Scientists have used genetic engineering to produce new types of grains and vegetables. These grains and vegetables can live in hot temperatures. This research is beneficial to humans because the research...

A. Could eliminate the need of fertilize crops
B. Make crops more resistant to pollutants
C. Show these crops are likely to be infested by insects and other pests
D. Indicates that these crops may grow in hot, dry areas

Answers

Answer:

I think its B but im not 100% sure

Explanation:

CO2 + H2O + energy --> C6H1202 + O2 , what is this formula for ?

Answers

Answer:

Photosynthesis, the energy is sunlight

What is meant by ecosystem?





×. thank you ☕
[tex] || semangat \: semuanya ||}[/tex]

Answers

Answer:

The simplest definition of an ecosystem is that it is a community or group of living organisms that live in and interact with each other in a specific environment.

Chipmunks use cheek pouches to carry food and store for the winter. Is this a structural adaptation, behavioral adaptation, or both?

Answers

Answer:

structural adaption

What kind of energy is stored in food?​

Answers

Answer:

chemical energy? I think..


1. What is biodiversity?
a) The animals that live only in rain forests.
b) The rich variety of live organisms in every
ecosystem on Earth.
c) The animals and plants species that live
only in your backyard.

2. Why do we need biodiversity?
a) it provides us with the food we need to eat
b)it provides us with virtually all the things we need to stay alive
c)so we have plenty of trees to use for fuels and materials

3.which of the following places has the highest biodiversity?
a)madagascar &indian ocean islands
b)tropical andes
c)caribbean islands

4. how many biodiversity ‘hotspots’ are there in the world?
a)12
b)25
c)34

5. in these ‘hotspots’ how much of the worlds species are found there?
a)10%
b)25%
c)50%


6. what does ‘endemic’ mean?
a) when a lot of people fall ill
b) when something is only found in one place
c) when a disease spreads throughout the world

7. why is biodiversity under threat?
a) habitat destruction
b)introduction of exotic species
c) both of the above and more


8. what can you do to help save biodiversity?
a) reduce, reuse, recycle
b) plant trees, clean local rivers and parks and protect habitats
c) all of the above

Answers

Answer:

1.B

2.B

3.A

4.A

5.C

6.C

7.C

8.C

1.B 2.B 3.A 4.A 5.C 6.C 7.C 8.C

Write a short note on oxygen gas

Answers

Answer:

alr

Explanation:

Oxygen is a colourless, odourless, tasteless gas essential to living organisms, being taken up by animals, which convert it to carbon dioxide; plants, in turn, utilize carbon dioxide as a source of carbon and return the oxygen to the atmosphere

Hoped it helped^^

(。づ ’▽’。)づ♡#CarryOnLearning

CO2 + H2O à H2O3

Is the above chemical equation balanced? Why or why not?

Answers

No because the carbon is not accounted for in the product side

Why does being hydrophobic make plastic more of a pollution problem

Answers

Hydrophobic means “fearing water”. Plastic doesn’t do well in water and Doesn’t decompose correctly, therefore causing pollution.

rate of reproduction to sexual reproduction in plants

Answers

Answer: Asexual reproduction

For example, sexual reproduction allows for variation, but gestation usually takes a long time and it requires heavy parental input. Asexual reproduction occurs quickly, but because all of the offspring have the same genetic information, individuals are more susceptible to disease.

Explanation:

Yup that’s absolutely right
Nice

Edwin Chargaff was a 20th century biochemist who investigated the structure of DNA. Chargaff looked at the ratios of the four bases in the DNA. State the type of bond that joins the bases together in a DNA molecule

Answers

Answer:

Hydrogen Bond

Explanation:

The hydrogen bond joins bases together in a DNA molecules. Which is the bond between two strands on a DNA molecule. Although the hydrogen bond is weak, collectively in the DNA molecule, it is a strong bond which binds the molecule together.

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