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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
24 views
One day you notice that yogurt containers have the phrase, “contains active cultures.” Which of the following statements
1 answer
36 views
In some areas of the ocean, conditions allow phytoplankton to thrive. Phytoplankton are small, photosynthetic organisms that
1 answer
31 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
40 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
41 views
Select all choices that accurately describe the stored potential energy of the football based on its position. Assume the
1 answer
30 views
George rolled four different types of paper into four different cylinders. Identical 10-cm rubber bands were placed around the
1 answer
63 views
Which is not a factor of mechanical energy?
Position Shape Texture Motion
1 answer
19 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
32 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
47 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
15 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
32 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
23 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
21 views
Does more particle movement increase or decrease the amount of thermal energy in an object?
Increase Decrease No Change
1 answer
19 views
Which type of nuclear energy involves the nuclei splitting?
Nuclear Fission Nuclear Fishing Nuclear Fusion
1 answer
32 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
28 views
Solve for a,a.
minus, 90, equals, minus, 6, a, minus, 12 −90= −6a−12
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15 views
Solve for zz.
26, minus, 5, z, equals, minus, 49 26−5z= −49
1 answer
20 views
Solve for xx.
70, equals, minus, 8, x, plus, 38 70= −8x+38
1 answer
20 views
Sunlight enables plants to use water and carbon dioxide during photosynthesis to make and store sugar in the plant. Any animal
1 answer
16 views
30 out of 600
1 answer
13 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
31 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
28 views
Identify the greatest common factor of 38, a38a and 11, z11z.
1 answer
24 views
Identify the greatest common factor of 7, y7y and 4949.
1 answer
15 views
Identify the greatest common factor of 49, c49c and 2121.
1 answer
14 views
Identify the greatest common factor of 18, y18y and 18, x18x.
1 answer
8 views
Identify the greatest common factor of 50, c, x50cx and 37, c37c.
1 answer
11 views
Identify the greatest common factor of 22, a, x, y22axy and 11, b, x11bx.
1 answer
20 views
Identify the greatest common factor of 66 and 48, z48z.
1 answer
10 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
31 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
14 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
27 views
Keesha performed a chemical reaction and the products looked quite different from the reactants. She knew the amount of matter
1 answer
32 views
Liz is exploring the different kinds of changes that can happen to substances.
After reading about the kinds of changes that
1 answer
26 views
Liz is exploring the different kinds of changes that can happen to substances.
She knows that changes can alter the looks or
1 answer
10 views
is sugar a pure substance
1 answer
16 views
is air a pure substance
1 answer
20 views
is oxygen a pure substance
1 answer
14 views
is smog a pure substance?
1 answer
19 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
15 views
Matter and energy are always conserved in natural processes. Use the equation for photosynthesis to help you respond to the
1 answer
22 views
Burning a log is an example of...
an endothermic reaction a catalyst an exothermic reaction a solution
1 answer
17 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
28 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
21 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
24 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
37 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
27 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
21 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
20 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
32 views
What is 40% of 600
1 answer
37 views
44 is what percent of 40?
1 answer
19 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
22 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
33 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
18 views
The store bought a jacket for $50, and it sold it for $80. What percentage was the markup?
1 answer
20 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
49 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
52 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
12 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
17 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
47 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
13 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
30 views
Plants and animals need energy in order to live. Which of the following statements about the conversion of food energy into
1 answer
24 views
Photosynthesis and cellular respiration are related processes in living things. What is true about these processes?
A. Animals
1 answer
26 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
12 views
Cellular respiration involves a reaction between glucose and oxygen to form
A. carbon dioxide. B. water. C. energy. D. all of
1 answer
12 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
14 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
21 views
To obtain the energy needed for life processes, plants break down _______ to release stored chemical energy through the process
1 answer
15 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
20 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
12 views
During photosynthesis, the following reaction takes place:
carbon dioxide + water + light energy → sugar + oxygen During
1 answer
23 views
The main reason that cells carry out cellular respiration is to _______.
A. get glucose B. breathe C. eliminate wastes D. release
1 answer
12 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
11 views
Photosynthesis typically occurs in plant cells. Cellular respiration occurs in
A. the cells of multicellular organisms only. B.
1 answer
16 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
22 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
15 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
28 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
25 views
Which of the following are produced by the process of cellular respiration?
A. carbon dioxide and water B. sugar and carbon
1 answer
24 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
40 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
15 views
Plants and animals need energy in order to live. Which of the following statements about the conversion of food energy into
1 answer
27 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
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
43 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
24 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
24 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
29 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
43 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
33 views
Nevaeh bought pp pencils that cost $0.55 each. Sales tax is 5%. Which expression represents the total amount Nevaeh paid,
1 answer
17 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
18 views
In areas with large numbers of phytoplankton, there are also large numbers of fish, marine mammals, and other animals. For
1 answer
34 views
Lumber is a renewable and self-maintaining resource. It comes from the cutting down of different types of trees. For example,
1 answer
22 views
Plants make food through photosynthesis, and photosynthesis takes place mostly in plant leaves, but when plants lose their
1 answer
24 views
Algae and phytoplankton are tiny organisms that live near the ocean's surface or in shallow ocean water. These organisms produce
1 answer
29 views
6 times 3/100
1 answer
26 views
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