Answer:
d is your answer
Explanation:
Ancestors of Mitochondria were aerobic bacteria, according to endosymbiotic theory.
What is endosymbiotic theory ?According to Lynn Margulis' endosymbiotic theory, mitochondria in eukaryotes are thought to have originated via an endosymbiotic connection with purple photosynthetic bacteria around 1.5 109 years ago. The endosymbiont, which had been captured, was subsequently transformed into a useful organelle bound by two membranes. Supporting data for the endosymbiont theory.
Prokaryotic cells and mitochondria are the same size. The DNA found in mitochondria is structurally identical to bacterial DNA. Similar to bacteria, mitochondria are self-replicating cells divide by binary fission Two membranes enclose mitochondria, and the inner membrane is structurally very similar to that of bacteria.
Therefore, aerobic bacteria are the ancestors of mitochondria.
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I am a microorganism that helps to increase soil fertility naturally.
Ribosomes
Rhizobium
Leguminous plants
Answer: rhizobium
Explanation: Some bacteria like rhizobium and blue green algae are able to fix nitrogen gas from the atmosphere to enrich the soil with nitrogen compounds and increase its fertility.
What two major events occur during meiosis that give the new cells genetic variation
Genetic variation is increased by meiosis
Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occurs during prophase.
Purple petal color in pea plants is dominant to white petal color. Two heterozygous pea plants are crossed.
Answer:
what do you need to know?
Explanation:
Answer:
use a punnett square if you need help u can ask me
which sentence best describes the process of drawing conclusions based on the information in table
Answer:
Conclusions, like inferences, involve educated guesses about what information means, beyond what is stated directly.
Explanation:
Hope this helps.
What do the dotted lines, indicated with the arrow, represent in the DNA model above?
The junctions of codons between individual strands
The bond between deoxyribose molecules and phosphates
The monomers that make up a polymer
The hydrogen bond between complimentary nucleotides
Answer:
The hydrogen bond between complimentary nucleotides.
Which phrase best defines homeostasis
Answer:
maintaning the essential internal parameters relatively constant is the phrase that best describes the process of homeostasis.
any three importance of measurements
descriptive, diagnostic, and predictive. Descriptive is the most basic form of measurement.
A student conducted an experiment on an unknown food to determine the presence of macromolecules. The results are as follows: Benedict’s test= blue, Iodine test= dark red, Biuret test= violet, Sudan IV= dark red. Using the indicator chart below and the information in the chart above, which macromolecules were present? Select all that apply.
a. carbohydrates
b. lipids
c. nucleic acids
d. proteins
INDICATOR
Benedicts
Iodine
Biuret
Sudan IV
NEGATIVE
TEST
blue
dark red
blue
dark red
POSITIVE
TEST
orange
black
violet,
reddish-
orange
To get into Challenge 2 you must know the monomer of the macromolecule from the correct answer.
Answer:a
Explanation:
A because
Please help !!!!!!
I need some to calculate this for me.
Pro Tip 1: To calculate the % of cells at rest (in interphase), divide the number of cells in interphase by the total # of cells in the slide (cells in telophase may look like they are almost 2 cells, but you can still count them as 1).
# of cells in interphase ÷ total cells = % of cells at rest
Pro Tip 2: To calculate the % of cells dividing (or mitotic index), add up the cells in prophase, metaphase, anaphase and telophase. Divide that number by the total # of cells in the slide.
# of cells in PMAT ÷ total cells = % of cells dividing (or mitotic index)
Answer:
INTERPHASE PROPHASE METAPHASE ANAPHASE TELOPHASE % of Cells at Rest (interphase)
% of Cells Dividing (Mitotic Index)
Normal Lung
13 cells 2 cells 2 cells 2 cells 1 cell 65% 35%
Cancerous Lung 6 cells 5 cells 3 cells 3 cells 3 cells 30% 70%
Normal Stomach 10 cells 3 cells 3 cells 3 cells 1 cell 50% 50%
Cancerous Stomach 5 cells 5 cells 4 cells 4 cells 2 cells 25% 75%
Normal Ovary 9 cells 5 cells 3 cells 1 cell 2 cells 45% 55%
Cancerous Ovary 3 cells 6 cells 5 cells 3 cells 3 cells 15% 85%
Explanation:
The answers are also down below in the chart if that helps you better make sense of them.
There are 20 cells in each column, to find the ones at rest we simply take the first number in the column and devide it by the number of cells (in this case 20) once we find the percent of cells at rest, we subtract from 100 to see the cells deviding!
Hope this helps another student along the way! :)
Good luck with your studies and have a fantastic winter break!
Give 4 examples of types of specialized cells.
Nerve cells, Blood cells, Reproductive cells, Skin cells
CAN SOMEONE PLEASE HELP ME WITH THIS SCIENCE QUESTION THANK YOU!!
Answer:
A.Negative Growth
Explanation:
please help me with this question:)
Answer:
The answer is true
similarities between looamy soil with clay soil
Answer:Loam soils generally contain more nutrients, moisture, and humus than sandy soils, have better drainage and infiltration of water and air than silt and clay-rich soils, and are easier to till than clay soils. ... Loam soil is suitable for growing most plant varieties.
Explanation:
Which of the following statements are accurate about Earth’s spheres?
SELECT ALL THAT APPLY.
A - earth’s spheres depend on each other
B - to maintain equilibrium, energy and mass is transferred between spheres
C - earth’s spheres support each other
Answer:
Option A, B and C.
Explanation:
The Earth spheres make up the components of the Earth and it comprises of both living and non living things.
The Earth spheres(hydrosphere, biosphere, atmosphere) are interconnected with each other. A change in a sphere can also in one way of the other influence change on the others. Interactions occur among the spheres I .e energy can be harness from one sphere to another.
For example birds can fly from biosphere to hydrosphere to obtain water. Their interactions cause or drive all the processes of the Earth which is an indication that they are connected to each other and react with each other.
Statements that are true as regards Earth’s spheres are;
A - earth’s spheres depend on each other
B - to maintain equilibrium, energy and mass is transferred between spheres
C - earth’s spheres support each other
There are four spheres that can be attributed to the Earth, and all these sphere are depend on each other. They are lithosphere, hydrosphere, atmosphere as well as biosphere. The lithosphere is the part that has solid rock, soil in it, to maintain equilibrium, there is usually transfer of mass and energy among the sphere.Therefore, all options are correct.
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identify the types of orchard farm
Las Vegas Natural History Museum
Define Museum.
Answer:
A museum is a location that contains historical art and artifacts.
Explanation:
I need to break free
I WANT TO BREAK FREE!!!!!!!!!!!!!
A biomolecule with the molecular formula C5 H10 O5 is most likely an example of
Select one:
O a. a monosaccharide
ob. a nucleotide
O c. an amino acid
O d. a fatty acid
which picture represents North America in the winter? A B C Or D
I cant see the labels but I think its d if not its the one under the one on top right
PLS HELP ASAP WILL GIVE BRAINLIEST Part A
Think of another common object around your house or school that you could use to model a cell. Describe the object. Based on its characteristics, does the object best model an animal cell, a plant cell, or a bacteria cell? Why?
Part B
Describe two advantages and two limitations of the model you selected.
There is no right or wrong answer
Answer:
Part A. Home phone, animal cell. It is in the same shape and cell pattern.
Part B. Two advantages are it's model and cell pattern, and two limitations are it's difference to the animal cell and it's limit on life.
Answer:
part A: maybe a squishy toy
Explanation:
An 8 year old girl is brought to your office by her mother, who tells you that the girl has been complaining of a sore throat for 3 days. Thinking that the girl was developing a cold, she kept her daughter home from school with the hope that she would get better. She has become worse in the past day, however, developing a fever of 103 degrees F, a headache, and complaining of abdominal pain. As you examine her throat, you see that in addition to red and enlarged tonsils, that there are white patches on them, and that there are swollen lymph glands on both sides of her neck.
Answer:
she has Strep throat or something like that
Explanation:
the Severity of strep throat can vary from person-to-person. The common symptoms are as follows:
Sudden high fever
Mild soreness in throat
Redness in throat with white patches
Headache
Chills
Loss of appetite
Cervical lymphadenopathy (swollen lymph nodes in the neck)
Swollen tonsils
Difficulty in swallowing food or water
Pain when swallowing
Nausea and vomiting is seen in younger children
Answer: Acute otitis media.
Explanation: This question is based on the opening section of Pirozzo and Del Mar (2001). They specifically say that "Acute otitis media is a disease of infancy and early childhood defined by the presence of inflammation and fluid in the middle ear and accompanied by at least 1 sign of acute illness." You can find more information here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1275975/
What is the most common weather patterns for the tropics?
Your answer
Send me a copy of my responses.
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One way bones are classified is by their shape. How would you classify the bones fractured by Mrs. Morgan?
Flat, long, short, and irregular are the classifications of bones based on their shape. Mrs. Morgan's humerus is a long bone, the occipital bone is flat, and vertebra is an irregular bone. ... Morgan's vertebra is fractured.
Bones are classified is by their shape are flat, long, short, and irregular are the classifications of bones based on their shape. Mrs. Morgan's humerus is a long bone, the occipital bone is flat, and vertebra is an irregular bone. Morgan's vertebrae is fractured.
What is bone?Bone has a connective tissue which has been metabolically active and the main function of the bone has to provide mechanical as well as structural support as well as perform movement, and protect important organs of the body.
The bone has been made up of the bone cells known as the osteocytes and extracellular matrix. The total number of bone of the human body contain has 206 bones including bones of spine, legs, arms, ribs, and skull.
Bones are made up of calcium and carbonate and they have bone marrow in which blood cells are produced. By nature bones came in category of living and they are active tissue .
There are several types of bones such as the flat bones, short bones, sesamoid bones, and long bones. The function of bone has to protect vital organs of the body.
Therefore, Bones are classified is by their shape are flat, long, short, and irregular are the classifications of bones based on their shape. Mrs. Morgan's humerus is a long bone, the occipital bone is flat, and vertebra is an irregular bone. Morgan's vertebrae is fractured.
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what determines the physical and chemical properties of a mineral?
Answer: Determines the properties of a mineral by the composition and structure .In such as: : colour, taste, tenacity, magnetism, fracture, streak, specific gravity, [ amount of transparency and crystalline structure.
What are functions of the roots in seed plants? (Choose all that apply)
stores food for the plant
aids in reproduction of the plant
anchors the plant
absorbs nutrients for the plant
Answer:
stores food for the plant
aids in reproduction of the plant
absorbs nutrients for the plant
how do you think the system used to organized where people live is similar to how your body is organized?
Which statement about a catalyst is correct?
1) A catalyst slows down a chemical reaction.
2) A catalyst speeds up a chemical reaction.
3) A catalyst has no affect on a chemical reaction.
Answer:
choice 2
Explanation:
because the catalyst reduces the activation energy of the reactants so the reaction then requires lower energy to occur then the reactents reach that energy in shorter time so the reaction takes shorter time .
What part of the scientific method is this: Because human subjects are difficult to study, laboratory rats were used. One group of laboratory rats was given the artificial sweetener, and another group was not. All of the rats were given an identical diet and living conditions.
Helppppp I have one hour until it’s due!!!!
Which type of mining is likely the least harmful to the environment?
a. surface mining
b. placer mining
c. subsurface mining
d. none of the above
Answer:
Placer mining
Explanation:
Placer mining can be less damaging to the environment than surface mines, as the sediment is returned to the water after the minerals have been extracted.
The mining that is likely the least harmful to the environment is the placer mining that is present in Option B, water is used in placer mining to separate mineral particles from soil.
What is placer mining?Placer mining involves the extraction of minerals from riverbeds, streambeds, and other bodies of water, and this method involves the use of water to separate mineral particles from soil, while placer mining is generally considered to be less harmful to the environment compared to surface and subsurface mining, but it can still have negative impacts if not properly managed. For example, the use of mercury in the gold extraction process can lead to water pollution and harm to aquatic life.
Hence, the mining that is likely the least harmful to the environment is the placer mining that is present in Option B.
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In the covalent compound HCl, H—Cl, or H:Cl, which element has the greater electronegativity
Chlorine has a higher electronegativity than hydrogen, but the chlorine atom's attraction for electrons is not sufficient to remove an electron from hydrogen. Consequently, the bonding electrons in hydrogen chloride are shared unequally in a polar covalent bond.
Chlorine has a higher electronegativity than hydrogen, but the chlorine atom's attraction for electrons is not sufficient to remove an electron from hydrogen.
What is electronegativity?
Electronegativity is defined as property of an atom of a particular chemical element which has been a property to attract the shared electrons while formation of chemical bond. Atomic number is the only factor that can affect the electronegativity of an atom.
The subatomic particle which is negatively charged and that has been move freely or bounded is known as electron. Electron is a subatomic particle that contain negative charges and proton is the subatomic particle which contain positive charge. Electron does not contain fix shape and size.
Hydrogen is known as the most lightest known element and hydrogen is present in the form of gas and the atomic number of hydrogen is 1. The burning of hydrogen with oxygen in order to form water. Atomic number is the only factor that can affect the electronegativity of an atom.
Therefore, Chlorine has a higher electronegativity than hydrogen, but the chlorine atom's attraction for electrons is not sufficient to remove an electron from hydrogen.
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