Read the scenario and examine the table.
Ivan wants to test how the amount of water consumed each day affects the number of facial blemishes people receive over a month. He gathers 12 people and divides them into 3 groups. He keeps everything the same for each group except for daily water and food intake. Throughout the month, Ivan tallies the number of facial blemishes each individual receives. The table details how Ivan changed the independent variables for each group.
Note: Group 1 is Ivan's control group.
What error did Ivan make in the design of his investigation?
A.) Ivan did not record the results for the dependent variable in a data table.
B.) Ivan did not determine the average number of blemishes received.
C.) Ivan tested more than one independent variable at a time.
D.) Ivan had the individuals in the control group consume water.
The answer is C.) Ivan tested more than one independent variable at a time.
Humans have an open circulatory system.
O True
O False
Answer:
False
Explanation:
Humans have a closed circulatory system, while many mollusks and other invertebrates have an open system. In a closed circulatory system, blood is enclosed within blood vessels.
What type of attraction occurs when water molecules attract other types of molecules (other than water)?
Choose 1 answer:
Adhesion
(Choice B)
B
Surface tension
(Choice C)
C
Hydrophobic
(Choice D)
D
Cohesion
Answer:
Choice A, Adhesion
Explanation:
If you have trouble telling the difference between cohesion and adhesion, remember that an adhesive is glue, water is essentially "gluing" itself to another surface.
Which statement BEST describes these images.
a- B and D are animal cells
b- A and C are prokaryotic cells
c- A, B and D are all eukaryotic cells
d- A, B, and C are all plant cells
Answer:
A no answer is euglena and d is bacteria b and I cannot understand this picture
Helppppppppppppppppp
Describe the differences in strength between ionic bonds, covalent bonds, hydrogen bonds, and Van der Waals interactions.
Answer:
A hydrogen bond (or H-bond) results when a hydrogen atom that is covalently bound to an electronegative atom (e.g. O, N, S) is shared with another electronegative atom. ... They are stronger than the van der Waals interactions, but weaker than covalent or ionic bonds.
Explanation:
Can a single cell also be an organism?why?
Answer:
A unicellular organism depends upon just one cell for all of its functions while a multicellular organism has cells specialized to perform different functions that collectively support the organism.
Hope this helps
Human Impact and Succession Quiz retake
A claim is scientific and accurate if it is based on someone’s opinion. based on data from a controlled experiment and confirmed by multiple trials. based on a presentation by a professional or an amateur in the field. based on a story that makes sense.
Answer: Based on data from a controlled experiment and confirmed by multiple trials.
How do fossil fuel give energy to cars
Identify all the mitotic stages provided with leader lines in the photomicrograph of an onion root tip in Figure 3.10 .
NEED HELP WITH FIGURE 3.10
Psychology (50 Points)
Answer them all please and Thank you.
I'm not too familiar with this, so if i'm wrong i sincerely apologize.
[tex]Number\; 1\; seems\; to\; be \;Graduation.[/tex]
[tex]Number\; 2\; seems\; to\; be\; all\; of\; the\; above.[/tex]
[tex]Number\; 3 \;seems \;to\; be\; Puberty.[/tex]
PLEASE HELP I KNOW IT'S LONG BUT I DON'T UNDERSTAND
is it a word bank or something
What is the cause and effect of invasive species ?
Answer:
THIS IS THE FULL ANSWERE YOU CAN MAKE YOUR OUN SHORT CUT
Explanation:
Invasive species are capable of causing extinctions of native plants and animals, reducing biodiversity, competing with native organisms for limited resources, and altering habitats. This can result in huge economic impacts and fundamental disruptions of coastal and Great Lakes ecosystems.
HOPE IT HELPED GOOD LUCK
describe the interior structure of a mitochondrion. HELP ME PLEASE !!!!!
Answer:
mitochondria are shaped perfectly to maximize their productivity. They are made of two membranes. The outer membrane covers the organelle and it contains it like a skin. The Inner membrane folds over many times and creates layered structure called cristae.
What happened to the eggplant after adding salt?
Answer:
Salting eggplant is often explained on two points: The first point contends that eggplants can be quite bitter, and salting helps cut the bitterness. (No, salt doesn't draw out bitterness. It just helps hide it.) Second, salting eggplants reduces the sponginess and leaves you with a creamy, silky texture.
Explanation:
Which job description would refer to the work a Golgi body does?
Figure 1 represents a segment of DNA. radiation can damage the nucleotides in a DNA molecule. to repair some types of damage, a single nucleotide can be removed from the DNA molecule and replaced with an undamaged nucleotide. which of the four labeled bonds in figure 1 could be broken to remove and replace the cytosine nucleotide without affecting the biological information coded to the DNA molecule?
Answer:
This question is incomplete as it lacks options; the options are:
A) Bond X only
B) Bond W only
C) Bonds Y and Z at the same time
D) Bonds W and Z at the same time
The answer is C. Bond Y and Z at the same time
Explanation:
A DNA molecule is a double-stranded molecule made up of nucleotide units. According to this question, radiation can damage the nucleotides in the DNA molecule. However, the cell can repair this DNA molecule by removing the single damaged nucleotide and replacing it with an undamaged one.
In this case, the cytosine nucleotide is the damaged nucleotide. To repair this DNA in the image, the covalent bond holding the one nucleotide to another in one of the DNA strands must be broken.
The sugar-phosphate bonds as represented by letters Y and Z are the bonds that could be broken to replace the cytosine nucleotide by an undamaged one, without affecting the biological information coded to the DNA molecule. The bonds holding the neighboring nucleotides are also broken during the repair process. Note that, this form of repair is called BASE EXCISION REPAIR
The bond in figure 1 could be broken to remove and replace the cytosine nucleotide without affecting the biological information coded to the DNA molecule is C. Both Bond Y and Z at the same time.
It should be noted that a DNA molecule is simply referred to as a double-stranded molecule that's made up of nucleotide units. Radiation can damage the nucleotides that are in the DNA molecule.
Through the removal of the single damaged nucleotide and then replacing it with an undamaged one, the DNA molecule can be repaired. Based on the diagram, the cytosine nucleotide is the damaged nucleotide, therefore, in order to repair it, the covalent bond that's holding the nucleotides together must be broken.
Read related link on:
https://brainly.com/question/16099084
What is deoxyribose?
Answer:
a sugar derived from ribose by replacing a hydroxyl group with hydrogen.
Explanation:
Scientific hypothesis must be proposed in a way that
Answer:
can be tested and proven
In which location in the human body will the catalase reaction be predicted to be slowest? F.) Brain G.) Heart H.) Liver J.) Stomach
Answer:
brain
Explanation:
I am sorry if this wrong
As the cell prepares to divide, chromatin coils tightly on itself to form ..
A.Chromatids
B.Chromosomes
C.Centromeres
D.Genes
Answer:
is it b
Explanation:
Chromatin coils tightly around itself to make chromosomes as the cell gets ready to divide.
What do human chromosomes do?Long segments of DNA are carried by chromosomes, which are organelles that can be found within the nucleus of cells. The material that houses genes is called DNA. It serves as the base for the human body. Additionally, protein found in chromosomes aid in the appropriate structure of DNA.
What are chromosomes and what do they do?The highest possible level of both protein and DNA organization is seen in chromosomes. Chromosomes' primary mission is to carry DNA & pass genetic material from one generation to the next. Cell division involves the critical function of chromosomes. They guard against tangles & damage to the DNA.
To learn more about : Chromosomes
Ref: https://brainly.com/question/19340015
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explain how molecules and compounds are different and use examples
Answer:
molecule is basic unit of compound.Compound is made up of various element.
Explanation:
Water is a compound made up of molecule of hydrogen and oxygen.
definition for excretory system
Answer:
The excretory system is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal chemical homeostasis and prevent damage to the body.
Explanation:
Ugg sorry posting so much but now I cant edit! Yes this is what the other 2 are
"I need help! I need help studying for this test retake. It's on Organic compounds, do you have notes, study sets/tools, websites, videos, anything will help. 2. Does anyone have advice on test anxiety?
Thanks for your Help!!!! Really appreciated!!!"
Enzyme notes :
- Many chemical reactions can be speed up by substances called catalyst.
- Metabolic reaction (chemical reaction) is controlled by enzyme.
What would happen to the fruit fly population in the locker if the apple were removed from that ecosystem?
Fruit flies are the insects that belong to the order, Diptera and are attracted to ripe and decaying fruit sources. If apple is removed from the ecosystem then the population of flies decreases.
What is an ecosystem?An ecosystem is said to be a biological community that is defined by the presence of both abiotic and biotic factors. It involves the interaction between living and non-living things that are linked through the food chain or the biogeochemical cycle.
The population of the fruit flies in the ecosystem depends on and interacts with the fruits that are ripe and decaying. They feed on those fruits. If the fruit like apples is removed then it will affect the fly population decreases as they were dependent on them for survival.
Therefore, the population of fruit flies decreases.
Learn more about the ecosystem, here:
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Advanced practice nurses earn less money than licensed practical nurses. Select one: a. True b. False
Answer: false
Explanation:
cuz
You have four sunflowers. You give each sunflower different types of water. One flower gets pure water and the others get different amounts of salt added to the water. The plants are watered every three days. After a two-week period, the height of each plant is measured.
What is the Independent variable?
Answer:
iv is the amounts of salt added to water
Explanation:
because it being controlled in the expariment by the scientists.
chloroplast produces what as a waste product
Which of the following statements
cite evidence that supports or led to
the discovery of the cell theory.
Choose ALL that apply.
One celled organisms reproduce by binary
Show all
Hi, you've asked an Incomplete question. However, I provided a brief about cell theory.
Explanation:
The cell theory basically states that all living things are made of cells and that the cell is the basic unit of life. Robert Hooke, who was a Scientist is known to have originated (coined) the term “cell” in the year 1665.
Basic Facts about Cell theory:
the basic unit of life is the cellall living things have one or more cells.already existing cells produce all new cells.