Answer:
an iodine test for starch
She is testing for the presence of Starch.
The iodine test is a chemical reaction which checks for the presence of starch on food substances with the use of iodine solution (0.1 M potassium triiodide solution) as the reagent.
The procedure follows as
Add few grams of the crushed solid food sample or use a spatula to hold a piece of food sample (bread) Add about 3-5 drops of iodine solution to the sample Observe any color changes.1. If no change occurs that means the Iodine still remains brown then no starch is present
2. If a blue black coloration is formed, then presence of starch is confirmed.
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PLEASE ANSWER SOON SJSKSKS
Answer:
c and d
Explanation:
What is the function of the organ shown?
Answer: Correct.
Explanation: The heart's main function is to pump blood around the body. Blood carries nutrients and waste products and is vital to life. One of the essential nutrients found in blood is oxygen.
whom you think the reason for corona viruse
Answer:
chinna made it to kill us
and they said opps the virus got out of the lab and here we are
Explanation:
Which of the following is a description of trait of a country with a high
carrying capacity?
O A. Food grown on land near homes
B. Spending hours per day collecting water
C. Easy access to safe drinking water
O D. Very little access to refrigeration
SOMEONE PLEASE HELP ME IM STUCK ON THIS PLEASEEEE
Answer:easy access to safe drinking water
Explanation:
How is phosphorus processed by the wetland?
I
Explanation:
Phosphorus, organic nitrogen and some metals ( iron or aluminium) usually attached to sediment and are carried by runoff to wet land. By holding water, a wetland allows sediment and large particles ti settle on the wetland bottom. The root systems of wetland plants then absorb nutrients from the sediment.
Hi, so i was wondering How long does Mars have to travel around Earth to make it's complete rotation?
Answer:
24 hours and 37 minutes
Explanation:
At Mars' orbital speed of 24 km per second, it takes the planet 24 hours and 37 minutes to complete one rotation. That is just a little more than a day on Earth.
Answer:
The Earth zips around the Sun at about 67,000 miles per hour, making a full revolution in about 365 days – one year on Earth. Mars is a little slower, and farther from the sun, so a full circuit takes 687 Earth days – or one Mars year.
Which animal has more food connections?
The harpy eagle or the ocelot ?
Answer:The harpy eagle
Explanation:I hoped I helped
How are Starch and Sucrose Similar? How are they different?
Answer:they both are a form of carbohydrates that give energy to the body
Explanation:
which part of the electromagnetic spectrum can be seen by humans
Answer:
A) Visible Light
I NEED THE ANSWERS FOR "WHERE DID I COME FROM" COMMON LIT
Answer:
u come from something called sprem
Explanation:
so when your dad loves your mom they do it slide it in then let out what all guy like the feeling of then makes u
Reaction: C6H120, + 6
A -> 6
B + 6 H2O + energy
What molecules does letter B represent in the reaction above?
02
O CO2
ОАТР
O H2O
The reaction of cellular respiration involves the use of the glucose molecule in presence of oxygen to produce energy and carbon dioxide. Thus, option B is correct, as molecule B is carbon dioxide.
What is cellular respiration?Cellular respiration is a chemical method that involves the inhaled oxygen and use of the food molecules to release energy along with the water and carbon dioxide molecules.
Cellular respiration can be depicted by the reaction:
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + energy
Therefore, molecule B is carbon dioxide.
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Toxins are dumped into a lake. Which of the following is not a likely consequence?
Answer:
D. The toxin will remain in the lake
Explanation:
Cells use a molecule called
Choose...
to store and release energy like a battery. The energy is stored in chemical bonds between
Choose...
groups of the molecule, and the energy is released when the chemical bonds are broken.
Answer:
ATP & Phosphate
Explanation:
just took the quiz and got it right
PLEASE ANSWER ASAP
Question 6 (2 points)
Some chickens lay an egg every day. Other chickens produce few eggs. A study is planned to examine some factors that might affect the number of eggs produced by chickens. Which of the following is NOT a suitable hypothesis for the study?
Question 6 options:
If the cage for the chickens is larger, they will produce more eggs.
If more eggs are produced by the chickens, they will lose more weight.
If there is more protein in the feed, then more eggs are produced.
If chickens receive more hours of light, then they will produce more eggs.
Question 6 (2 points)
Some chickens lay an egg every day. Other chickens produce few eggs. A study is planned to examine some factors that might affect the number of eggs produced by chickens. Which of the following is NOT a suitable hypothesis for the study
If the cage for the chickens is larger, they will produce more eggs.
If more eggs are produced by the chickens, they will lose more weight.
If there is more protein in the feed, then more eggs are produced.
If chickens receive more hours of light, then they will produce more eggs.
Sam wished to investigate how fertilizer run-off affects the growth of algae in freshwater lakes and streams. He set his experiment up as follows. He placed 900 ml of water into each of five 1000 ml glass beakers. To each beaker, he added 5 ml of water from an aquarium which contained a large concentration of algae. The beakers were placed under a lamp which was on a timer to provide 12 hours of light each day. Liquid fertilizer was added to the beakers in the following amounts.
Each week, a random sample from each of the beakers was examined under a microscope to get a count of the number of algal cells present.
What is the independent variable in this experiment?
Question 7 options:
amount of fertilizer
number of algal cells
hours of daylight
amount of water
Question 8 (2 points)
Sam wished to investigate how fertilizer run-off affects the growth of algae in freshwater lakes and streams. He set his experiment up as follows. He placed 900 ml of water into each of five 1000 ml glass beakers. To each beaker, he added 5 ml of water from an aquarium which contained a large concentration of algae. The beakers were placed under a lamp which was on a timer to provide 12 hours of light each day. Liquid fertilizer was added to the beakers in the following amounts.
Each week, a random sample from each of the beakers was examined under a microscope to get a count of the number of algal cells present.
What is the dependent variable in this experiment?
Question 8 options:
size of beakers
number of algal cells
amount of fertilizer
hours of daylight
Question 9 (2 points)
Sam wished to investigate how fertilizer run-off affects the growth of algae in freshwater lakes and streams. He set his experiment up as follows. He placed 900 ml of water into each of five 1000 ml glass beakers. To each beaker, he added 5 ml of water from an aquarium which contained a large concentration of algae. The beakers were placed under a lamp which was on a timer to provide 12 hours of light each day. Liquid fertilizer was added to the beakers in the following amounts.
Each week, a random sample from each of the beakers was examined under a microscope to get a count of the number of algal cells present.
Which of the following is the control group for the experiment?
Question 9 options:
Beaker D
Beaker C
Beaker E
Beaker A
Beaker B
Question 10 (2 points)
To focus a specimen, it is best to start with which objective:
Question 10 options:
High power
Low power
Scanning
Ocular
On the image, which number represents the coarse adjustment knob?
1
2
5
10
What important feature is missing from this line graph representing sea level change between 1870 And 1990
X axis label
a title
Y axis label
appropriately spaced scales
Answer:
I know that for 6 is A) for 7) I'm between A) and C) for 8 it's B) 9 I don't understand, but the control group is whatever is kept the same and you're not testing on it and the rest I don't know
I’ll mark brainly to the correct answer!
ILL GIVE BRAINLY PLEASE HELP RN
sorry if it’s blurry please help
Answer:
25
Explanation:
Answer:
sis i really dont know whats the answer
Explanation:
tbh
how can a baby show traits that the parents don't show
Answer:
If he or she doesn't look like dad, it might be because he or she hasn't gone through the environmental pressures that will cause the change. If your father's child works outdoors or spends a lot of time outside, there's a good chance that he probably has darker skin than your child.
Which best describes the cycle that ensures fresh water, which is vital for carrying out metabolic processes, is available?
A.
carbon emission, photosynthesis, respiration
B.
evaporation, condensation, precipitation
C.
evaporation, respiration, transpiration
D.
run-off, precipitation, flooding
Answer: B. evaporation, condensation, precipitation
Explanation:
The Hydrological Cycle is the process by which water moves from the surface to the atmosphere and then back again. It is important for various reasons one of which is that it is vital for carrying out metabolic processes.
The cycle involves the evaporation of water from the surface which turns water into water vapor. This vapor then becomes liquid and forms clouds when it gets to the atmosphere in the condensation process.
It then falls back down to the surface when the clouds formed become too heavy in the process of precipitation/ rain.
4. You are running a race and you speed up from 3 m/s to 5 m/s in 4 seconds.
a. What is your change in speed?
b. What is your acceleration?
The initial speed is 3 m/s and final speed is 5 m/s. Change in speed is 2 m/s.
What is speed?The initial speed is 3 m/s and final seed is 5 m/s. The change in speed is final speed minus initial speed.
The rate at which distance changes over time is known as average speed. The pace at which displacement changes over time is known as average velocity.
Change in speed= 5 m/s − 3 m/s
= 2 m/s.
Velocity = speed/ time
= 2/ 4
= 0.5 m/s
acceleration = velocity/ time
= 0.5/ 4
= 0.125 m/s2
Therefore, The initial speed is 3 m/s and final speed is 5 m/s. Change in speed is 2 m/s.
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hi id have one sorry
Answer:
wdym I'm only 14 almost 15
5. What type of energy is needed for active transport?
I'll give BRAINLIEST if you answer this correctly
Answer:
i would say 6 but it might not be right
Explanation:
Can someone help me please and thanks
Answer:
on witch one
Explanation:
What does an organ system depend on in order to properly function?
Answer: I think it's either C or B? but I could be wrong.
Explanation:
Something that could help: The function of an organ system depends on the integrated activity of its organs.
Answer: I think it’s B
Explanation: If you use the process of elimination that the only one left.
what is the unit for mass
Help will mark Brainlest!!! Plssss
Glucose reacts with Oxygen to form Carbon dioxide and water. During this process, glucose is oxidized to Carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP
(adenosine triphosphate).
THE REACTION
C6H12O6 + 6O2 → 6CO2 + 6H2O
What's the term that describes all the chemical reactions taking place in an orgasm
Answer:
Metabolism
Explanation:
A potato core was placed in a beaker of water as shown in the figure below. Which diagram best represents osmosis? (NOTICE: Starch is TOO LARGE to move through a membrane on its own
Answer:
The correct answer is - option A.
Explanation:
Osmosis is the movement of the solvent in a solution into the higher concentration are of solute through the semipermeable membrane such as cell membranes.
The movement of the solvent (water) through a semipermeable membrane is always from a high water conentration to a low water concentration. Solute molecules do not move through a semipermeable membrane during the osmosis process
What is the main purpose of photosynthesis and cellular respiration
Answer:
photosynthesis and cellular respiration is required for making food and extracting food from the bond of glucose
3. Which of the following is an igneous rock?
a. gneiss
b. shale
c. limestone
d. pumice
Answer:
the answer is d
Explanation:
just use google
