Answer:
endosymbiosis.
Explanation:
By the beginning of the 20th century, researchers thought that plastids and mitochondria could come from bacteria. These would have been ingested by primitive cells and live within them in symbiosis.
Answer:
endosymbiosis
Explanation:
How do mitosis and meiosis differ among humans, chickens, and alligators?
Answer:
Mitosis- produce two identical somatic daughter cells
Meiosis- produce four genetically different reproductive daughter cells.
Explanation:
Mitosis and meiosis are the two major cellular divisions in multicellular organisms. However, they differ in series of aspects.
Mitosis is a cell division that involves the production of two daughter cells which are genetically identical to the parent cell. Mitosis is used to multiply somatic cells, hence, it is called multiplication division. Mitotic process is the same in humans, alligators and chickens.
Meiosis, contrarily, is a cell division that involves the production of four daughter cells which are genetically different from the parent cell. Meiosis occurs in a two step division process in order to produce sex cells or gametes with a reduced number of chromosomes. Hence, meiosis is called reduction division. Note that, meiosis only occurs in reproductive cells. Meiotic process is likewise in humans, alligators and chickens as long as they reproduce sexually via gametes.
Mitosis and meiosis differ among humans, chickens and alligators because of their different functions and the presence of chromosomes.
Cell DivisionMitosis and meiosis have two kinds of cell division.
In humans, mitosis is a single cell that splits into two exact daughter cells.
Meiosis creates egg and sperm cells.
In animals, meiosis creates gametes directly, and mitosis happens in somatic cells.
Meiosis in the chicken embryo is formed late in embryogenesis. Meiotic germ cells are rather noticeable only in female gonads.
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Are there striations in the skeletal muscle tissue
Answer:
Skeletal muscles are long and cylindrical in appearance; when viewed under a microscope, skeletal muscle tissue has a striped or striated appearance. The striations are caused by the regular arrangement of contractile proteins (actin and myosin). ... Skeletal muscle also has multiple nuclei present in a single cell.
Explanation: Hope this helps. :)
sientific method hypothesis
Son músculos antagonistas (unos realizan flexión y otros extensión) los siguientes: * 5 puntos Trapecio- deltoides Bíceps- tríceps Serratos- rectos Frontal- orbicular
Answer:
Bíceps- tríceps
Explanation:
Los músculos trabajan para generar movimiento mediante la contracción de células musculares. El bíceps y el tríceps son músculos antagonistas presentes en el brazo. Cuando el brazo se acorta, el bíceps funciona como agonista (es decir, se contrae) y hace que los tendones que tiran de los huesos del antebrazo puedan doblarlo. Durante este movimento, el triceps funciona como antagonista, encontrándose en estado de relajamiento. Por otra parte, durante el estiramiento del brazo, las funciones de estos músculos se invierten, con lo cual el tríceps (agonista) se contrae y el bíceps (antagonista) se relaja.
Conlan wants to answer the question, “Does phosphorus affect tomato fruit production?” Which statement represents a hypothesis that he can test to answer his question?
Provided question lacks the group of choices to answer the question, however, the correct group of choices are given below:
A)If phosphorus affects tomato fruit production, then tomatoes that are fertilized with phosphorus will have larger leaves.
B)If phosphorus affects tomato fruit production, then phosphorus should be added to the soil during planting.
C)If phosphorus affects tomato fruit production, then adding phosphorus to the soil will make tomatoes taste better.
D)If phosphorus affects tomato fruit production, then plants that are fertilized with phosphorus will produce more tomatoes.
Answer:
The correct answer would be option D) )If phosphorus affects tomato fruit production, then plants that are fertilized with phosphorus will produce more tomatoes.
Explanation:
To answer the question of Conlan, “Does phosphorus affect tomato fruit production?” he should form a hypothesis that can test the amount of the phosphorus and amount of the production of tomato fruits.
Productivity of fruits dealt with the producing tomato fruit instead of their taste, or size of leaves. So the statement D represent the hypothesis for his question due to the fact that phosphorus can increase the capacity of tomato fruit production.
Thus, the correct answer is option D.
In comparing stop-transfer and internal start-transfer sequences in proteins, it can be said that __________. In comparing stop-transfer and internal start-transfer sequences in proteins, it can be said that __________. both cause the formation or stabilization of the translocon both cause the disassembly or destabilization of the translocon both are hydrophobic both lead to integral membrane proteins with the same orientation of C and N termini
Answer:
Both are hydrophobic
Explanation:
Because first of all Internal start- transfer process is a process where a peptide is transfered to the side opening of translocon and then then fixes itself in the membrane, whereas
Stop-transfer sequences in proteins act to stop this process of translocation and moves out through the side opening in translocation to fix itself on a membrane this is consistent with the hydrophobic nature that repels water. Because they are non polar and lack the capacity to form a hydrogen bond with another molecule
HELPPP!!!! ME!!!! PLEASE!!!!
Answer:
If plants are grown in soil containing worms, then both the plants and worms will benefit from each other because worms break down the organic matter around the dirt, fertilizing the dirt which helps the plants grow.
Someone diagnosed with meningitis has inflamed membranes that cover and protect the brain and spinal cord. Meningitis is a result of pathogenic gram-negative bacteria that cause extreme infections when their bacterial cell wall dies and lipopolysaccharide (a lipid and polysaccharide) is released. The lipopolysaccharide is an example of a/an
Answer: ENDOTOXIN
Explanation: Meningitis is a nervous system disorder that occurs when there is an infection and inflammation of the meninges,these meninges are the membranes that cover the brain and the spinal cord,they are the pia mater, dura mater,and the arachnoid mater.
This infection and inflammation of the meninges is causes by inversion of microorganism, bacteria precisely,when these bacteria that are gram negative invade the meninges,the cell wall of the bacteria dies off exposing the cellular contents, this exposure introduces a toxin known as LIPOPOLYSACCHARIDE directly in to the meninges which disrupts the normal functioning of the meninges, infection further sets in and inflammation is triggered as well.
In order for evolution to occur:
new genes must form during reproduction.
organisms must change from one kind to another through mutations.
both statements above would have to be true.
Answer:
Yes, evolution is the change in the heritage characteristics of biological populations over successive generationsThe general trend that is shown on the graph is that average surface temperature on Earth
o has fallen by 0.4°C since 1880.
o has risen by nearly 1°C since 1880.
o dropped a fraction of a degree in 2000.
o rose sharply betuneen the tears 1900 and 1920
Answer:
B
Explanation:
Answer: The answer is B. Has risen by nearly 1 degree C since 1880
Explanation: Edge2021
Dispose of all waste as instructed by your teacher. There should be
special containers provided in order to get rid of the following types
of waste:
a. Matches, litmus paper, wooden splints, toothpicks, etc.
b. Broken glass
C. Rags, paper towels, or other absorbent materials used
in the cleanup of flammable solids or liquids.
d. Hazardous/toxic solids or liquids as identified by your teacher.
Answer:
all materials are recycling, reduce,reuse
what is bio living earth about
Answer:
The course integrates earth science into standard biology concepts from a phenomenon-based approach.
Explanation:
Wich statements accurately describe cells?Check all that apply.
1. Cells are the smallest unit of life
2.All organisms are made up of cells
3.Cells only make up unicellular organisms
4.Multicellular organisms are made of many cells
5.A plant is a unicellular organism made up of one cell
Answer:
Answers 1, 2, and 4
Explanation:
3 is incorrect because every organism is made of cells, not just unicellular organisms. these organisms do, however, have one cell that carries out all functions for the organism.
5 is incorrect because plants are multicellular organisms and thus have more than one cell.
Viruses that are sitting in a droplet of water on a desk are...
1 dividing very rapidlly and becoming more dangerous
2 able to live for 3 days and then die
3in a dormant replication stage
4 inactive, they need a cell to reproduce
The virus that is sitting in a droplet of water on a desk is inactive, and they need a living cell to reproduce themselves because they do not have the machinery to reproduce. Thus, the correct option is D.
Viruses can be defined as the acellular organisms. These are very small organisms which does not have any organelles. The viruses contain only the genetic material in the form of DNA or RNA and a protein coat which surrounds the genetic material.
Viruses are found to be pathogenic in nature. These can infect many organisms such as plants, bacteria, and animals. Viruses cannot divide outside a living body as they do not have the machinery to reproduce and thus requires a cell to divide. These are inactive outside the living body.
Therefore, the correct option is D.
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Consider an experiment in which starch is dissolved in a liter of water. Some of the solution is placed into a securely tied dialysis bag. The dialysis bag is placed into a beaker containing distilled water and iodine for 30 minutes. What are the correct answers for the questions below? (Note: Iodine reacts with starch to create a black/purple color.) What would happen to the color of the solution in the bag? a. The solution in the bag would turn purple as the iodine reacts with the starch. b. The solution in the bag would grow lighter as the starch leaves the bag and enters distilled water and iodine.
Answer:
a. The solution in the bag would turn purple as the iodine reacts with the starch.
Explanation:
According to this question, a solution containing starch is placed into a securely tied dialysis bag. The dialysis bag is then placed into a breaker containing distilled water and iodine for 30mins.
The starch is a solute substance, which when added to the solution in the dialysis bag makes the solution in the bag HYPERTONIC in comparison to the hypotonic (low solute concentration) distilled water+iodine in the beaker. Based on this concentration gradient (difference in concentration), osmotic flow will occur across the dialysis bag (semi-permeable membrane).
Note that, osmosis is the movement of water from a region of low solute concentration to a region of high solute concentration across a membrane. Hence, water+iodine from the breaker will move into the solution in the dialysis bag.
Because the solution entering the dialysis bag contain iodine, it will react with the starch content of the dialysis bag and form a dark purple coloration inside the dialysis bag.
A man walks 20km in 4 hours. Find his speed.
Answer:
Distanced covered = 20km
time taken = 4 hrs
speed = S/t
=20 /4 = 5 km/hrs
#FreeMelvin
Answer: 5 km per hour
Explanation: If you set up a unit rate, you can simplify to find the answer.
20 km ?
------------ = ---------------
4 hr 1 hr
Use the crisscross method, so 20 times 1 is 20, and 20 divided by 4 is 5, so the answer is 5 km per one hour.
40 POINTS!! ANSWER CORRECTLY FOR BRANLIEST!
Which of these statements about heating up land and water is true?
Land is heated through radiant energy.
or
Land is heated by conduction.
Answer:
I think its land is heated through radiant energy
Answer: land is heated up by radiant energy
Explanation:
Radiation from the sun heats up Earth's landmasses and oceans. The weather and climate on Earth are directly dependent on this heat energy transfer, and so are all the phenomena that accompany weather, such as winds, tornadoes, hurricanes, rain, snow, and ocean waves.
What role best describes the bee's role of gathering pollen?
Answer:
Its niche
Explanation:
A refrigerator thermometer is read ten times and registers degrees Celsius as:
39.1, 39.4, 39.1, 39.2, 39.1, 39.2, 39.1, 39.1, 39.4, and 39.1. However, the real
temperature inside the refrigerator is 37 degrees C. Is this an example of
precision, accurate, neither, both or neither, Make a selection and explain.
Answer:
Precise, but not accurate
Explanation:
First, let’s define accuracy and precision.
Accuracy: how close you are to the actual value
Precision: how close the measurements are to each other.
Let’s examine the data given:
39.1, 39.4, 39.1, 39.2, 39.1, 39.2, 39.1, 39.1, 39.4, 39.1
Each number is very close to 39, within 0.1 to 0.4.
The actual temperature of the refrigerator is 37 degrees. Each measurement is about 2 away from 37.
Since the measurements are close to each other, but far from the true value, we can say this is precise but not accurate.
The
is the basic unit of life.
A. organism
B. cell
C. tissue
D. organelle
Explanation:
The cell is the basic unit of life
Answer:
B. Cell
Explanation:
The Cell is the most basic unit of life
Do male doctors perform more cesarean sections (c-sections) than female doctors? a study in switzerland examined the number of cesarean sections (surgical deliveries of babies) performed in a year by samples of male and female doctors. here are summary statistics for the two distributions:
Answer:
Yes, it seems that male doctors do indeed perform more of these surgeries than the female doctors.
Explanation:
According to the given data, the distribution curve for the female doctors will be more symmetrical since the mean and median value is close to one another. The mean value and other indicators in the data set show higher values for the male doctor.
Susan had an emergency Cesarean with her first child due to concern about the fetal heart rate. She is now pregnant with her second child and would like to try to have this baby vaginally. What kind of birth should Susan tell her care provider she is interested in? please answer this quick
Answer:
it depends on how much of a risk having the baby naturally would be. Having another C-section is the safest way but the can do either.
What makes up genes? Explain in 1 paragraph please
Answer: Genes are made up of DNA
Explanation: Genes are made up of DNA . to be more precise each gene is made out of possibly 25 000 dna to 2 million dna.
A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases. The Human Genome Project estimated that humans have between 20,000 and 25,000 genes.
Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but a small number of genes (less than 1 percent of the total) are slightly different between people. Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person’s unique physical features.
As the Black Death spread in the mid-14th century, which region tended to experience the
greatest loss of life?
A) Urban areas
B) Rural Farms
C) Remote villages
D) Mountainous areas
Answer:
urban areas
Explanation:
because the population of urban areas in those countries is more then villages.
which two words are the closet antonyms
A. melancholy and forlorn
B. calculate and isolate
C.vital and non-essential
D.disorder and injury
Answer:
c. vital and non-essential
antonyms are opposites
PLEASE HELP!!!!! How are a hypothesis, theory, and scientific law related?
Answer:
They are all steps taken to perform the scientific method.
Explanation:
Hypothesis is an educated guess made from observations, a theory is a hypothesis test with a significant amount of data, and scientific law is a theory that is consistent with generations of data. They are all different. However, they are all apart of a process called the scientific method.
What is division of labour in multicellular organisms?
hello,
here is your answer:
**********
Multicellular organisms are made up of millions of cells. These cells are divided into separate groups. Each group performs a specific function. Since these cells carry out only a particular function, they do it efficiently.
**********
hope this helped,
:)
difference between paw paw and tomato
Answer:
❥ Ripe pawpaws give off a wonderful fruity aroma. If the pawpaw does change color, it will likely turn a lighter shade of green, possibly with some yellowing. A more reliable indicator is feeling. The fruit will begin to feel softer, much as a peach or avocado.
❥ Your ripe tomato will give slightly to the touch. It shouldn't be soft but rather a little tender. Because tomatoes ripen from the inside out, this is a good indicator that it's ready.
When you break down maple syrup into smaller units, these units are called ________ * a. nucleotides b. monosaccharides c. RNA d. triglycerides
Answer:
I'm pretty sure the answer is b. Monosaccharides
Explanation:
Monosaccharides are simple sugars that contain fructose and glucose, which I believe maple syrup has.
What is the main purpose of glucose
Glucose is a carbohydrate. Carbohydrates are quick energy so, the purpose of glucose is quick energy.