Question
The question is incomplete. The complete question is as follows:
Review the Data Tables in Exercises 1 and 2. Compare the results of the Unknown for all tests to the results for the various known samples to determine the identity of the Unknown. Explain the identity of the Unknown using your experiment results in the exercises to help explain and support your answer.
Answer:
According to the results, the unknown is a protein.
Explanation:
According to the results, the unknown is a protein, not a carbohydrate or lipid. When Biuret's reagent test is performed, it tested positive while the tests for sugar, starch, and lipid were negative proving that the unknown substance is the protien.
in the experiment it is important to make measurements that are both precise and accurate
which of these measurements of time is the most precise
5.1 second s
5.14 second s
5 second s.
Answer:
5 second s.
Explanation:
The base unit for time is the second (the other SI units are: metre for length, kilogram for mass, ampere for electric current, kelvin for temperature, candela for luminous intensity, and mole for the amount of substance). The second can be abbreviated as s or sec.
5.14 seconds
Explanation:
It gives a more specific time compared to 5.1 & 5
Do the positive charges of calcium ions and sodium ions make these ions more likely to move into or out of the cell?
Answer:
Yes.
Explanation:
Yes, the positive charges on both calcium ions and sodium ions will responsible for the movement of these ions into or out of the cell because the membrane has negative charge which attract these positively charged calcium ions and potassium ions. These difference concentrations of sodium and potassium in the cell are due to the activity of cell membrane active transport system which moves sodium out of the cell and potassium into it.
Yes, the positive charges of calcium ions and sodium ions make these ions more likely to move into or out of the cell.
What do you mean by Diffusion?Diffusion may be defined as a process resulting from the random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.
The membrane of a cell possesses a negative charge, so it attracts these positive charge ions and makes a concentration difference that leads to the process of active transport through which sodium moves out of the cell and potassium into it.
Therefore, Yes, the positive charges of calcium ions and sodium ions make these ions more likely to move into or out of the cell.
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PLZ, PLZ, PLZ HELP! NEED NOW!
Answer:
the answer is sugar buddy
Explanation:
Answer:
It's sugar. Glucose is the sugar in plants.
What are small organelles found in large numbers in the cytoplasm of a cell called?
A. Vacuole
B. Mitochondria
C. Ribosomes
D. Chloroplast
Answer: A. Vacuole
Explanation: :)
Answer: Mitochondria
Explanation:
Hello! I have some questions I’m stuck on. this is about cells and this is middle school level.
1. How did robert Hooke contribute to our understanding of cells?
2. The cell theory describes three basic characteristics of cells and living things. Summarize these basic characteristics.
3. Compare how cells in unicellular and multicellular organisms perform the tasks needed for life.
MULTIPLE CHOICE
1. If you were to compare the function of a cell to the function of a parts in the house which part of the house would match a cell?
A. Roof
B. Bricks
C. Air conditioner
D. Pluming system
Thank you to anyone who answers
Answer:
To me i would say B is the answer
Question 3 of 20 -
0000 UNIT SCI07 408 SLPS2021
Question: 1-3
A biologist describes two modern-day species as "sharing a common ancestor." What does it mean when two species share a common ancestor?
Both species evolved from one species that lived in the past
One of the species evolved into the other species
The two species are actually the same species with genetic variation
The two species reproduced with one another and formed a common ancestor
Answer: C. is your answer
Explanation: It means the species shared a common ancestor in the recent past.
I am a single-celled, prokaryotic organism that lives in the large intestines of mammals. I reproduce asexually by binary fission and can reproduce very quickly.
Answer: Kingdom:Eubacteria
organism name: kelp
Explanation: its kelp in the kingdom classification bacteria
Answer:
Escherichia coli.
Explanation:
Escherichia coli (E. coli) is a gram negative, rod shaped and facultative anaerobic bacterium that lives in large intestines of mammals. It is unicellular or single celled and prokaryotic organism. It reproduces asexually by binary fission.
It does not have nuclues or membrane bound organelbecause it is prokaryotic.
Therefore,
Escherichia coli lives inside large intestines of mammals.
Why is there no such thing as being a “carrier” of an autosomal dominant disorder?
What can you tell about the sex of this person where the chromosomes came from?
Answer:
Females have two X chromosomes in their cells, while males have both X and a Y chromosomes in their cells. Egg cells all contain an X chromosome, while sperm cells contain an X or Y chromosome. This arrangement means that it is the male that determines the sex of the offspring when fertilization occurs.
Explanation:
Meanwhile the ovary itself releases a hormone called estrogen which causes the uterine lining to increase in thickness.The uterine lining becomes thicker so that the fertilized egg can attach to it
Answer:
Meanwhile, the ovary itself releases a hormone called estrogen which causes the uterine lining to increase in thickness. The uterine lining becomes thicker so that the fertilized egg can attach to it. It is correct.
Explanation:
The hypothalamus, which is in the brain, releases a hormone called Gonadotrophin Release Hormone (GnRH). GnRH travels to the hypophysis, which is a gland located in the lower part of the skull. The GnRH makes the hypophysis release a hormone called Follicle Stimulant Hormone (FSH). This hormone travels to the ovaries, making it release estrogen. This hormone is in high concentrations during the 4th or 6th day of the cycle up to the 14th day, which is when ovulation happens. Estrogens make the endometrium, which is the outer layer of the uterus, grow making it thicker to prepare itself to attach the fertilized egg and provide to it the necessary nutrients to grow.
If the fertilization does not happen, the thickened endometrium will be expelled from the uterus some days later during menstruation.
In females, the uterine lining is at the site of fertilized egg attachment. The attachment of the fertilized egg makes the lining thicker.
What is the role of estrogen in uterine lining shedding?The estrogen hormone is produced by the ovaries of females. The hormonal cycle with rising, estrogen, and progression causes the menstrual cycle.
The non-fertilized egg triggers the release of estrogen, and the uterine line sheds off.
However, the fertilization of the egg results in a decreased signal of estrogen in the female body, and the uterine lining becomes thick without shedding.
Thus, the statement about the thickening of the uterine lining with the fertilization of the egg is correct.
Learn more about the fertilization of eggs here.
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what are the many little branches of the respiratory system?
PLSS HELP IMMEDIATELY!!! ILL MARK BRAINIEST IF U DONT LEAVE LINKS OR GUESS!!!
Answer:
Blood is pushed through vessles
Explanation:
all the other answers are... weird.
Answer:
C
Explanation:
Heart needs exercise and at all times if your heart doesn't get rest you die so it's the most important part
Select ALL the correct answers.
Which statements are true regarding an energy pyramid?
The number of producers is greater than the number of primary consumers.
The amount of energy at the primary consumer level is greater than the amount of energy at the
secondary consumer level.
The number of primary consumers is less than the number of secondary consumers.
The amount of energy at the producer level is less than the amount of energy at the primary
consumer level.
Answer:
The number of producers is greater than the number of primary consumers.
The amount of energy at the primary consumer level is greater than the amount of energy at the secondary consumer level.
Explanation:
Write 2 organisms that would have the most similar DNA.
Answer:
I think ... maybe ... dog and wolf?
Explanation:
because dog is just the domesticated version of wolf, then this may be possible - but this is just a very basic answer. other answers like chicken and dinosaur may be true as well depending on how specific your question is.
pasteurization is not required for which type of egg or egg product ?
A photomicrograph of onion root tip cells during mitosis is shown below.
Staphoto.com/Alan John ander
Which phase of mitosis is occurring in the cell indicated by the arrow?
F Prophase
G Metaphase
H Anaphase
Talonha
Which model represents a possible chemical reaction
Answer: A I think
Explanation: I'am really sorry if i'am wrong
Identify one environmental factor that could cause a base sequence in
DNA to be changed to a different base sequence.
Explanation:
Environmental exposure to certain chemicals, ultraviolet radiation, or other external factors.
How many food chains are in this food web?
Answer:
There are 8 food chains
Explanation:
An organism's physical appearance is called?
Answer: phenotype. An organism's physical appearance, or visible traits. genotype. An organism's genetic makeup, or allele combinations.
The physical appearance of an organism is called its phenotype.
What is the term used to describe an organism's physical appearance?An organism's physical appearance also known as its phenotype refers to the observable characteristics that result from the interaction between its genetic makeup (genotype) and environmental influences. These traits can include features such as size, shape, color, and behavior.
The phenotype is the manifestation of an organism's genes and how they are expressed and it vary both within and between species. Studying phenotypes is important for understanding genetic inheritance, evolution and the overall diversity of life on Earth.
Read more about phenotype
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substance in which the monomer is a nucleotide _______
A - Carbohydrates
B - Nucleic Acids
C - Proteins
D - Fats
Nucleic acid is a substance in which the monomer is a nucleotide. Therefore, option B is correct.
What are nucleic acids?Biopolymers and macromolecules called nucleic acids are important for all known forms of life. They are constructed of monomers called nucleotides, which are composed of a nitrogenous base (adenine, guanine, thymine, uracil, and cytosine), a phosphate group, and a 5-carbon sugar.
The components that make up an individual's genetic code are nucleic acids. Deoxyribonucleic acid (DNA) and ribonucleic acid are the principal two examples of nucleic acids (RNA). They have an important role in heredity and protein synthesis.
Thus, A nucleotide serves as the monomer of a material known as nucleic acid. Therefore, option B is correct.
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Describe one way that a natural event can cause a decline in biodiversity.
Answer:
Earthquakes, landslides, volcanic eruptions and natural bush fires all affect the many different ecosystems on our planet.
Explanation:
::)
SRE
Statement: Many diseases have both genetic and environmental factors.
Reasoning:
Evidence:
Please help
Answer:
genetic factor is that in a persons DNA a piece of it could malfunction and create some kind of weakness and the air if it is polluted could create some kind of disease because of the dirty air
Explanation:
don't judge me if its wrong but pls give me brainliest im so close to ranking up
What is the proper way to introduce a motion using correct parliamentary procedure ?
Answer:
um i think , that it's i move
Answer:
Step 1: A member of a board who wants to make a motion must first be recognized by the chair of the meeting. ...
Step 2: A member seconds the motion. ...
Step 3: The chair states the motion: “It is moved and seconded to ... ” At this point the motion now belongs to the group (not the maker or the “seconder”).
Explanation:
Step 1: A member of a board who wants to make a motion must first be recognized by the chair of the meeting. ...
Step 2: A member seconds the motion. ...
Step 3: The chair states the motion: “It is moved and seconded to ... ” At this point the motion now belongs to the group (not the maker or the “seconder”).
What determines the temperature of a layer of the atmosphere
Answer:
How far down the layer is
Explanation:
yeah
8. Which of these is not a possible effect of the destruction of the
rain forest?
O A. drought
O B. crop failure
O c. more oxygen in the air
O D. increase in carbon dioxide in air
Answer:
drought
Explanation:
droughts are bad for the rain forests without water some plants can die
How does widespread illness in food animals affect people's health?
Black coat is dominant over white coat in guinea pigs. A homo-zygous black pig is mated with another homo-zygous black pig.
What are the genotypes of the parents?
A.) bb and bb
B.) BB and BB
C.) Bb and Bb
D.) BB and bb
Answer:
BB and BB
Explanation:
If the pig is on its back, the one doing dissection would say the pig is on the
surface.
dosral
ventral
medial
lateral
Answer:
Ventral
Explanation:
This is because when you want to dissect a pig, it's back is place on a dissecting tray and it's belly side is up which is the ventral side. With the ventral side, dissection will be easy and the major organs and systems can be observed easily as they will be rightly viewed because they are obvious and rightly placed at belly side up.
1
Which of the following organisms is most likely to
reproduce asexually?
A
Leopards
B
Bacteria
C
Goldfish
D
Sunflowers
Answer:
goldfish
Explanation: