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Questions and answers by
Maria Candea
Questions (445)
All living things need energy to survive. The most common source of energy for organisms is glucose molecules, which are used as
1 answer
18 views
One day you notice that yogurt containers have the phrase, “contains active cultures.” Which of the following statements
1 answer
23 views
In some areas of the ocean, conditions allow phytoplankton to thrive. Phytoplankton are small, photosynthetic organisms that
1 answer
23 views
Maria owns a bakery and bakes many different types of yeast breads. One day she notices that the bread she baked is flat and
1 answer
26 views
The diagram shows a type of ramp called a half-pipe that skateboarders and snowboarders use to perform high jumps and tricks in
1 answer
28 views
Select all choices that accurately describe the stored potential energy of the football based on its position. Assume the
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21 views
George rolled four different types of paper into four different cylinders. Identical 10-cm rubber bands were placed around the
1 answer
38 views
Which is not a factor of mechanical energy?
Position Shape Texture Motion
1 answer
16 views
Based on the Law of Conservation of Energy, if the wrecking ball has a current potential energy of 149.5 KJ, without friction,
1 answer
23 views
The bobsled is an event in the winter Olympics. In this event, each sled and its riders race down an icy track.
Which graph
1 answer
24 views
Chloe is training for her first half-marathon, which requires her to run
21.1 km. Before she runs, she carefully chooses the
1 answer
13 views
How could you increase the GPE of a ball without raising it higher?
change the shape of the ball change the volume of the ball
1 answer
18 views
6.
At which point would potential energy be the greatest? Image 1- when the slingshot has not been stretched out fully. Image 2-
1 answer
18 views
In the picture above, a person is using 40J of energy to rub their hands together on a cold day. The friction between the hands
1 answer
17 views
Does more particle movement increase or decrease the amount of thermal energy in an object?
Increase Decrease No Change
1 answer
17 views
Which type of nuclear energy involves the nuclei splitting?
Nuclear Fission Nuclear Fishing Nuclear Fusion
1 answer
25 views
Find the constant of proportionality by:
Dividing y by x Dividing x by y Multiplying x and y Subtracting x and y
1 answer
23 views
Solve for a,a.
minus, 90, equals, minus, 6, a, minus, 12 −90= −6a−12
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13 views
Solve for zz.
26, minus, 5, z, equals, minus, 49 26−5z= −49
1 answer
16 views
Solve for xx.
70, equals, minus, 8, x, plus, 38 70= −8x+38
1 answer
16 views
Sunlight enables plants to use water and carbon dioxide during photosynthesis to make and store sugar in the plant. Any animal
1 answer
11 views
30 out of 600
1 answer
11 views
A college student takes out a $7,500 loan from a bank. What will the balance of the loan be after one year (assuming the student
1 answer
23 views
A car dealership pays $8,350 for a car. They mark up the price by 17.4% to get the retail price. What is the retail price of the
1 answer
19 views
Identify the greatest common factor of 38, a38a and 11, z11z.
1 answer
19 views
Identify the greatest common factor of 7, y7y and 4949.
1 answer
12 views
Identify the greatest common factor of 49, c49c and 2121.
1 answer
10 views
Identify the greatest common factor of 18, y18y and 18, x18x.
1 answer
6 views
Identify the greatest common factor of 50, c, x50cx and 37, c37c.
1 answer
9 views
Identify the greatest common factor of 22, a, x, y22axy and 11, b, x11bx.
1 answer
17 views
Identify the greatest common factor of 66 and 48, z48z.
1 answer
8 views
Ella is interested in combining substances to form a new material.
What does she need to know before she combines the substances
1 answer
22 views
Earlier in the day, Will learned about the kinds of changes in matter that can take place.
Later that day, he made toast and
1 answer
13 views
Desmond wanted to paint his bedroom. He went to the hardware store and was shown a variety of different paint colors from which
1 answer
19 views
Keesha performed a chemical reaction and the products looked quite different from the reactants. She knew the amount of matter
1 answer
25 views
Liz is exploring the different kinds of changes that can happen to substances.
After reading about the kinds of changes that
1 answer
18 views
Liz is exploring the different kinds of changes that can happen to substances.
She knows that changes can alter the looks or
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8 views
is sugar a pure substance
1 answer
14 views
is air a pure substance
1 answer
17 views
is oxygen a pure substance
1 answer
11 views
is smog a pure substance?
1 answer
17 views
Max has a group of goldfish in his tank at home. He notices that they are struggling a bit. Max wants to increase their rate of
1 answer
13 views
Matter and energy are always conserved in natural processes. Use the equation for photosynthesis to help you respond to the
1 answer
18 views
Burning a log is an example of...
an endothermic reaction a catalyst an exothermic reaction a solution
1 answer
14 views
In a newspaper, it was reported that the number of yearly robberies in Springfield in 2010 was 164, and then went down by 50% in
1 answer
23 views
The stock of Company A gained $3.45 throughout the day and ended at a value of $72.45. By what percentage did the stock rise?
1 answer
17 views
The stock of Company A lost $4.30 throughout the day and ended at a value of $103.20. By what percentage did the stock decline?
1 answer
19 views
In a newspaper, it was reported that the number of yearly robberies in Springfield in 2013 was 200, and then went down by 19% in
1 answer
20 views
In a newspaper, it was reported that the number of yearly robberies in Springfield in 2012 was 200, and then went down by 14% in
1 answer
20 views
Alex measures a line to be 6.42 ft long. If the actual measurement is 6 ft, find Alex's relative error to the nearest
1 answer
18 views
Eric measures a line to be 7.54 cm long. If the actual measurement is 8 cm, find Eric's relative error to the nearest
1 answer
17 views
David measures a line to be 8.9 in long. If the actual measurement is 9 in, find David's relative error to the nearest
1 answer
24 views
What is 40% of 600
1 answer
13 views
44 is what percent of 40?
1 answer
16 views
A radar gun measured the speed of a baseball at 103 miles per hour. If the baseball was actually going 102.8 miles per hour,
1 answer
10 views
Last year, Ken bought a mountain bike for $460. His bike has depreciated since he bought it. It is now worth $320. About what
1 answer
23 views
Taylor's sister earns $12 per hour. The store offers her a raise - a 5% increase per hour. After the raise, how much will
1 answer
11 views
The store bought a jacket for $50, and it sold it for $80. What percentage was the markup?
1 answer
16 views
The original selling price of a share of stock was dd dollars. The selling price for a share of the same stock at a later date
1 answer
39 views
The original selling price of a share of stock was dd dollars. The selling price for a share of the same stock at a later date
1 answer
39 views
Type the correct answer in the box. Use numbers instead of words.
Emma has 6 pounds of frozen berries to use for smoothies. If
1 answer
9 views
Henry has 9/10
kilogram of potting soil. He uses 2/5 of the potting soil to plant some roses. How much potting soil does Henry
1 answer
15 views
Amir reads 3/8
of a book on Monday and 2/7 of the same book on Tuesday. Which expression represents the fraction of the book Amir
1 answer
30 views
What will happen to this molecule before it is used by the body for energy?
A. It will go through an aerobic process resulting in
1 answer
11 views
There are 21 amino acids that make up all the proteins in every living organisms. Protein can be found in a variety of foods.
1 answer
20 views
Plants and animals need energy in order to live. Which of the following statements about the conversion of food energy into
1 answer
18 views
Photosynthesis and cellular respiration are related processes in living things. What is true about these processes?
A. Animals
1 answer
18 views
Lions, giraffes, elephants and other animals gain their energy
A. by absorbing the light from the Sun. B. by producing it as they
1 answer
10 views
Cellular respiration involves a reaction between glucose and oxygen to form
A. carbon dioxide. B. water. C. energy. D. all of
1 answer
10 views
What must be true of the actual reaction but is not shown in the model?
A. The number of glucose molecules at the beginning of
1 answer
12 views
How do animals get energy from food?
A. Sound vibrations in the body are used to change food into energy. B. Electrical impulses
1 answer
13 views
To obtain the energy needed for life processes, plants break down _______ to release stored chemical energy through the process
1 answer
13 views
Sugar molecules can be oxidized in the cells of animals. This oxidation releases energy for the animal to use. From what source
1 answer
15 views
As an animal grows, its mass increases. The matter that makes up this new mass comes mostly from
A. compounds that the animal
1 answer
10 views
During photosynthesis, the following reaction takes place:
carbon dioxide + water + light energy → sugar + oxygen During
1 answer
13 views
The main reason that cells carry out cellular respiration is to _______.
A. get glucose B. breathe C. eliminate wastes D. release
1 answer
9 views
Where does an eagle get the energy it needs to grow and to fly?
A. from the trees it nests in B. from the water it fishes in C.
1 answer
9 views
Photosynthesis typically occurs in plant cells. Cellular respiration occurs in
A. the cells of multicellular organisms only. B.
1 answer
13 views
A rabbit eats a carrot for food. What happens to the molecules of the food?
A. The molecules get converted to energy only. B. The
1 answer
19 views
An oak tree gets nourishment from the Sun and produces acorns. Squirrels eat the acorns for food. What happens to the molecules
1 answer
13 views
After an organism ingests food, the food moves through a series of
by which it is broken down and rearranged to form new
1 answer
16 views
How do animals get energy from food?
A. Electrical impulses in the body are used to change food into energy. B. Molecules from
1 answer
18 views
Which of the following are produced by the process of cellular respiration?
A. carbon dioxide and water B. sugar and carbon
1 answer
16 views
How can a growing animal get calcium to make new bone tissue?
A. by removing calcium from its bones B. by making calcium from
1 answer
25 views
Glucose can be found in foods like honey. What happens to glucose in the body?
A. It goes through chemical reactions with carbon
1 answer
12 views
Plants and animals need energy in order to live. Which of the following statements about the conversion of food energy into
1 answer
23 views
The expression 1, point, 1, 2, left parenthesis, 0, point, 5, p, right parenthesis1.12(0.5p) represents the total amount Adriel
1 answer
18 views
The original selling price of a share of stock was dd dollars. The selling price for a share of the same stock at a later date
1 answer
27 views
Sophia bought ff folders that cost $0.95 each and mm markers that cost $0.85 each. Sales tax is 7.75%. Which expression
1 answer
18 views
The expression 1, point, 1, 1, left parenthesis, 0, point, 9, 5, p, right parenthesis1.11(0.95p) represents the total amount
1 answer
19 views
Bentley bought ff folders that cost $0.90 each and mm markers that cost $0.40 each. Sales tax is 6%. Which expression represents
1 answer
22 views
The original selling price of a share of stock was dd dollars. The selling price for a share of the same stock at a later date
1 answer
26 views
The original selling price of a share of stock was dd dollars. The selling price for a share of the same stock at a later date
1 answer
20 views
Nevaeh bought pp pencils that cost $0.55 each. Sales tax is 5%. Which expression represents the total amount Nevaeh paid,
1 answer
14 views
When a plant generates food through photosynthesis, this food
A. can cause the plant to gain excess layers of fat. B. can be used
1 answer
14 views
In areas with large numbers of phytoplankton, there are also large numbers of fish, marine mammals, and other animals. For
1 answer
24 views
Lumber is a renewable and self-maintaining resource. It comes from the cutting down of different types of trees. For example,
1 answer
18 views
Plants make food through photosynthesis, and photosynthesis takes place mostly in plant leaves, but when plants lose their
1 answer
17 views
Algae and phytoplankton are tiny organisms that live near the ocean's surface or in shallow ocean water. These organisms produce
1 answer
21 views
6 times 3/100
1 answer
24 views
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