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qaws [65]
4 years ago
6

Greg is trying to push a box of books across the floor of his room. The box of books doesn't move because the forces on the box

are ____________. When his little brother walks in and starts pushing with him, the box begins to slide across the floor. His brother's pushing, combined with his, makes the forces on the box ______________.
Biology
2 answers:
Keith_Richards [23]4 years ago
5 0
<span>unbalanced; balanced</span>
seropon [69]4 years ago
3 0
Balanced & unbalanced
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An iodine test of a tomato plant leaf revealed that starch was present at 5:00 p.m. on a sunny afternoon in July. When a similar
dimaraw [331]

This reduction in starch content occurred because starch was changed into simple sugars

<h3>Explanation: </h3>

Starch is a polymeric carbohydrate consist of many glucose units linked by glycosidic bonds. The iodine test is used to test for the presence of starch. Starch will change color to an intense "blue-black" colour after the addition of aqueous solutions of the triiodide anion. To do it we can add Iodine-KI reagent to a solution or directly on a potato or other materials such as bread, crackers, or flour The reaction between amylose that present in lesser amounts and iodine is said to account for the intense color change seen.

An iodine test of a tomato plant leaf revealed that starch was present at 5:00 p.m. on a sunny afternoon in July. When a similar leaf from the same tomato plant was tested with iodine at 6:00 am the next morning, the test indicates that less starch was present in this leaf than in the leaf tested the day before. This reduction in starch content occurred because starch was

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  • 2. transported out of the leaves through the guard cells
  • 3. transported downward toward the roots through tubes
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Learn more about   starch brainly.com/question/12497961

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3 0
4 years ago
Read 2 more answers
3. What happens when a cell is subjected to a solution where the water concentration is equal to that inside the cell (isotonic
Naddika [18.5K]

Explanation:

In an isotonic solution the relative concentration of solute and water are equal on both sides of the membrane.so there is no water movement so there is no change in the size of the cell but, when a cell is placed in a hypotonic solution water will enter the cell and the cell will swell.

3 0
3 years ago
Sam has a mutation in a gene that affects the function of a transfer RNA (tRNA). Human cells have 20 different types of tRNAs, a
irga5000 [103]

Answer:

No

Explanation:

<u>The mutation is not expected to affect all the proteins produced in Sam's cells because each protein has a different structure and functions.</u> Proteins are polymers of amino acids and the component amino acid for each protein diffesr. Hence only the proteins whose constituent amino acids include the amino acid being carried by the mutated tRNA would be affected. Others whose constituent amino acids do not include the amino acid being carried by the mutated tRNA would function normally.

7 0
3 years ago
Which statement is correct concerning hereditary
agasfer [191]
<span>The correct answer is number one. A chromosome is composed of many genes. A chromosome is referred to as a DNA molecule in an organism's body, which consists of genetic materials. Chromosomes consists of numerous genes within them, in their nucleus and mitochondria, genes are found inside the Chromosomes itself.</span>
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3 years ago
_____ is the study of how organisms interact with the living and nonliving parts of their environment.
Eduardwww [97]

Answer:

c. Ecosystem science

Explanation:

<em>Sustainability is incorrect because it means the existence of resources for a long term.</em>

<em>Environmental science is incorrect because it is the branch of science that studies the processes and interactions that affect the environment.</em>

<em>Biodiversity science is incorrect because it is the study of various species that  occupy a particular area.</em>

The correct option is c. Ecosystem science is the study of community of living organisms, how they interact with themselves and with non-living components of the community.

3 0
3 years ago
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