A student wanted to see if covering a leaf in foil would stop it from producing starch. Why should the student put the plant in a dark cupboard for 48 hours before returning it to the light and starting the experiment?

1. To make the results reliable
2. So that the plant would photosynthesise faster when returned to the light
3. So that any starch already in the leaf was used up by the plant
4. He did that simply

Answers

Answer 1

Answer:

4.) He did that simply

Explanation:

I'm just guessing it's 1 because the other answers don't seem reasonable

Answer 2

Answer:

Putting the plant in dark for 48 hours would stop the process of photosynthesis as light is required for it. Photosynthesis produces organic sugars which are stored in form of starch in plants. The absence of photosynthesis would lead to the consumption of all stored starch making the leaf starchless. The correct answer is option D.

Explanation:


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WRITE DOWN THE 2 EFFECTS OF CONTRACTING THE CHICKENPOX VIRUS

Answers

Answer:

yes

Explanation:

im 14  about to be in ninth grade iv had chicken pox twice when i was a kid to be exact when i was 4 and 5 i have not had them since i was 5. there fore yes it is possible to be immune IF you get them more than once.

When contracting chickenpox you will experience symptoms like fever, headache, loss of appetite etc. The main effect is that it is contagious and it causes an itchy/ rash that appears all over your body

Coal is a fossil fuel produced from plant material underground over very long geological periods of time. What are petroleum and natural gas originally formed from?

Answers

It was formed from the remains of ancient plants and animals.

Is RNA is the genetic material that makes up genes?

Answers

No dna is what does that

Answer:

Yes

Explanation:

Cellular organisms use messenger RNA to convey genetic information that directs synthesis of specific proteins.

Hope this helps :)

How might the migration of individuals in or out of the habitat affect the frequency of each allele in this population?

Answers

Answer:

they can

Explanation:

they have feet

Is Photosynthesis is one of the functions of DNA?

Answers

No. DNA does not influence photosynthesis. DNA provides the instructions for making proteins. Photosynthesis provides the plant cell energy (glucose). Both are doing there own thing.

Who is a scientist?
A. A person who likes to ask questions.
B. A person who likes to find answers to questions.
C. A person who works with chemicals.
D. All of the above.

Answers

Answer:

A scientist asks questions and also try to find the answers by sometimes conducting experiments or observations that may require chemicals, so the answer is all of the above.

Answer:

d,all of the above

Explanation:

A gene that controls beta-carotene production has been successfully inserted into a
common food crop. Name the technique used to do this. Give the full name, not the
abbreviation.

Answers

Answer:

genetic modification

Explanation:

The technique that is used in inserting a gene into a crop is genetic modification.

What is genetic modified crop?

A genetically modified organism (GMO) is a living organism whose DNA has been altered using genetic engineering techniques.

Humans have used breeding methods to modify organisms for thousands of years. Over generations, corn, cattle, and even dogs have been selectively bred to have certain desired traits.

The majority of GMO crops grown today were developed to assist farmers in preventing crop and food loss and controlling weeds.

The following are the most common traits found in GMO crops: Resistance to certain harmful insects, and Tolerance to certain weed-controlling herbicides.

Thus, with the help of genetic modification, a gene that controls beta-carotene production can be successfully inserted into a common food crop.

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answer pls! due today and don’t know what the answer is

Answers

Answer:

it's the second one

frameshift mutation.

Jennie makes quilts. She can make 7 quilts with 21 yards of material. How many yards of material would be required to make 12 quilts?​

Answers

Answer:

36

Explanation:

First find how many yards to make in one quilt.( 21/7) Once you know that times it by 12 to know the answer.

Answer:

I think the answer is 36 but i don't know

Explanation:

12
The diagram to the right shows a proposed theory of the origin of eukaryotic cells, called
endosymbiosis.
Which of the following explains why cells that contained mitochondria-like organelles had
evolutionary advantage? *
(1 Point)
They were able to photosynthesize
They had more DNA
They were immune to bacterial invasion.
They were able to make more use of available energy.

Answers

Answer:

They were able to make more use of available energy.

Explanation:

Where are coastlines located ?

Answers

Answer:

at the confluence between the sea and the land at the time of the highest tide

sorry if this answer wrong:(

10. Maltase 11. Peptidase 12. Phospholipase 13. Polymerase 14. Ribonuclease 15. Sucrase
Look at the list of Enzymes provided. Decide which substances are affected by these enzymes.​

Answers

10. Maltase 11. Peptides 12. Phospholipids. 13. DNA/RNA. 14. RNA. 15. Sucrose

I need the ANSWER ASAP!!!!!!!!!!Which statement describes what will most likely occur when warm air cools and the temperature drops to the dew point?

A. Air will contain more water vapor.

B. Dew will form on leaves.

C. Clouds will disappear.

D. Water vapor in the air will evaporate.

Answers

Given what we know, we can confirm that what will most likely occur when warm air cools and the temperature drops to the dew point is that dew will then form on leaves.

What causes dew?This is often caused by a drop in temperature.When the temperature drops to the dew point, the air is no longer hot enough to maintain water in its vapor form.Therefore, the water cools to the point that it becomes a liquid and drops to the ground, forming dew.

Therefore, given that we refer to the dew point as the point at which the temperature is no longer hot enough to maintain water in its vapor form, once the temperature drops to this point, water becomes liquid, and dew forms on leaves.

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Answer:

B

Explanation:

took the quiz

A computer program and Shannon‘s computer carries out a single mathematical operation and 1.5 X 10 seconds how much time would the program take to complete two. 5X 10 mathematical operations

Answers

Answer:

30 seconds

Explanation:

Based on the information provided we can see that a single mathematical operation takes 1.5 x 10, if we complete this expression we can see that the single mathematical operation would take a total of 15 seconds. Therefore two operations would take double the amount of time so we can multiply this number of seconds by 2 to get the total amount of time it will take for both of these operations to complete.

15 * 2 = 30 seconds

What happens during the process of nitrogen
fixation?
A. Bacteria change ammonium into nitrate.
B. Bacteria grow on nodules on plant roots.
C. Bacteria convert gaseous nitrogen into
ammonia.
D. Bacteria absorb ammonia and excrete
ammonium.

Answers

Answer:

I'm not 100% sure but i think its A; let me know if this is correct.

Explanation:

C. Bacteria convert gaseous nitrogen into ammonia during the process of nitrogen fixation.

What is nitrogen fixation?

Nitrogen fixation is the process by which atmospheric nitrogen (N2) is converted into ammonia (NH3), which can then be used by plants and other organisms as a source of nitrogen for growth and reproduction.

This process is performed by specialized bacteria, such as those found in the nodules of leguminous plants, as well as other bacteria found in soil and water. The conversion of N2 into NH3 is an energy-intensive process, which is why nitrogen fixation is performed by only a few types of bacteria. The ammonia produced by nitrogen-fixing bacteria can be used directly by plants and other organisms, or it can be converted into other forms of nitrogen, such as nitrates and nitrites, which are also usable by plants.

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Thunderstorms are more common in some areas than in others. The map shows the average
number of thunderstorms per year in different parts of the United States.
Average Number of Thunderstorms per Year
30
10
32
California
Atlantic
Ocean
Pacific
Gorida
Ocean
Gulf of
Mexico
Source: NOMA National Weather Service
Why are there significantly more thunderstorms in Florida than in California?
A The state of Florida is smaller than the state of California.
B The air in Florida is more stable than the air in California.
C The air above Florida holds less moisture than the air above California.
D The ocean currents near Florida are warmer than the ocean currents near California.

Answers

Answer:

gulf of Mexico because it is one of the biggest sea

The average no. of thunderstorms per year in the different parts of the united states is 30, most thunderstorms happened in California but were significantly more common in Florida than in California.

Countries where thunderstorms per year according to average numbers-

FloridaGulf of MexicoCaliforniaPacific oceanAtlantic ocean

The Gulf of Mexico is the biggest sea that's why thunderstorms mostly happened.

Why are there more thunderstorms in Florida than in California?

Thunderstorms are more common in some areas than in others. The map shows the typical number of thunderstorms per annum in several parts.

The state of Florida is smaller than the state of California is the reason why thunderstorm mostly happens in Florida than in California.

Therefore, the average no.of thunderstorms is 30 mostly in the Gulf of Mexico, affecting mostly in Florida.

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EASY_LOTS OF POINTS
I've just done an experiment in which I put one object into three beakers (three of the same object for each of the beakers) with different levels of acidity to record the impacts acidity has on the object.
Which is the independent variable? which is the dependent variable?

Answers

The independent variable is the beakers and the dependent variable is the object you put in the beakers.

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Is smelt fish good for people with gastritis or stomach problems and if so...how?


THANKS!​

Answers

Answer:No because they tend to have issues ceeping food down so a slight smell of fish may cause them to keep getting sick.

Explanation:

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WRITE DOWN THE EFFECTS OF CONTRACTING THE CHICKENPOX VIRUS

Answers

Once someone contracts chickenpox, their immune system creates antibodies allowing them to fight off the infection and possibly be immune to a future infection

*AQUATICS SCIENCE*
Q: Which image shows the most likely path of a barrel floating down a meandering river?

Answers

Answer:

C

Explanation:

A meandering stream has a single channel that snakes through its valley, so the distance 'as the stream flows' is greater than the distance 'as the crow flies.'

Image  C is  the most likely path of a barrel floating down a meandering river.

What is the meandering of a river?A meandering stream has a single channel that snakes through its valley, so the distance 'as the stream flows' is greater than the distance 'as the crow flies.' The outer edge of the water moves faster than the inner as it flows around these curves.Meanders form as a result of both deposition and erosion, and they gradually migrate downstream. Because of the decreased friction, the force of the water erodes and undercuts the river bank on the outside of the bend, where the water flow has the most energy.

To learn more about : Meanders

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During sexual reproduction the chromosomes of
1. Two separate individuals are combined together
2. One individual are transferred to another
3. One parent only are copied for its offspring
4. Two separate individuals are spilt apart

Answers

1. Two separate individuals are combined together

in your own words describe what the geological time scale is.

Answers

Answer:

Geological time scale is the arrangement of major divisions of geological time into eras, periods and epochs on the time scale.

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In the 2016 movie, The Thinning, starring Logan Paul and Peyton List, a group of
teenagers must past a standardized test or be executed. The politicians who developed
this legislation did it because society was suffering from mass population and
legislatures wanted to thin' it out. The ways of dystopic society is a driving force
on evolution. Which mechanism of evolution best identifies this scenario?
A. Genetic drift
B. Natural selection
C. Artificial selection
D. Genetic flow

Answers

Answer:

C. Artificial selection

Explanation:

This is artifical selection because it is "the identification by humans of desirable traits in plants and animals, and the steps taken to enhance and perpetuate those traits in future generations". Humans are unnaturally choosing which humans can survive! Hope this helps :D

What is the process of changing to a gas from a liquid

Answers

Answer:

boiling/vaporization

Explanation:

liquid evaporates, becoming gas

When do molecules stop moving or vibrating? *

Answers

Answer:

never

Explanation:

Fun fact if it was possible to make it to absolute zero which is 0 degrees kelvin you would have no entropy therefore there is no disorder and nothing would move I learned that I’m chemistry last year

What did early organisms release into the air

Answers

Answer:oxygen

Explanation:

It was the cyanobacteria, pumping out unwanted oxygen, that transformed Earth's atmosphere

A yellow spider with black spots moves into a population of solid black spiders. According to the theory of gene flow, which of the following is most likely to happen over time?

An increase in the number of yellow spiders with black spots.
A decrease in the number of yellow spiders with black spots.
An increase in the number of solid black spiders.
The number of solid black spiders will remain the same.

Answers

Answer:

A Increase in the number of yellow spiders with black spots

Explanation:

Answer:

An increase in the population of yellow spiders with black spots.

Explanation:

How do plants get the energy they need to make sugar?​

Answers

Answer:

Plants convert energy from sunlight into sugar in a process called photosynthesis. Photosynthesis uses energy from light to convert water and carbon dioxide molecules into glucose (sugar molecule) and oxygen

Explanation:

Answer:

from using photosynthesis

Explanation:

or from the sun i kinda forgot about that

What would most likely happen to the chipmunk population in 2014 if the population went up to 22 million in 2013?

Answers

Answer:

The food source of the chipmunks would decrase, so chipmunks would have to compete for food. Leaving some to die from hunger.

Please help! I'll mark you brainliest if its right, AND it's worth 35 points!

Answers

The answer is 2,1,3,4
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