Answer:
Mass the bag before and after its exposure to the solution. If diffusion occured, then there should be an increase in the bag's mass.
Explanation:
please mark brainlyest
To modify the experiment to collect quantitative data showing that water diffused into the dialysis bag, you could measure the change in the weight of the dialysis bag before and after the experiment.
Here's how you can do it: Prepare the dialysis bag and fill it with a known volume of a solution. For example, you could fill the bag with 100 mL of a sugar solution. Weigh the dialysis bag using a balance before placing it in the beaker with water.
Place the filled dialysis bag into a beaker of pure water. Make sure the dialysis bag is fully submerged in the water. Allow the setup to stand for a specific amount of time (e.g., 1 hour) to allow water to diffuse into the dialysis bag.
After the specified time, carefully remove the dialysis bag from the beaker of water and gently pat it dry with a paper towel to remove any excess water on the outside. Weigh the dialysis bag again using the same balance.
Calculate the change in weight of the dialysis bag by subtracting the initial weight from the final weight. The weight difference represents the amount of water that has diffused into the dialysis bag.
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Which of the following is an example of a vestigial structure?
-the wings of red-tailed hawks
-the hind limbs of a house cat
-the fins of a shark
-Wisdom teeth in humans
Answer:
the wings of a red tailed hawks
help pls il give brailist if correct
Answer:
I believe that the answer is A.
Explanation:
This option makes the most sense because of the industrial and agricultural revolutions.
What part of the plant produces fruit and seeds?
Stem
Leaves
Stamen
Pistil
Answer:
pistol
Explanat oops ion:
pew pew
The part of the plant that produces fruit and seeds is the pistil. The Pistil is the ovule producing part of a flower, where a mature ovary is a fruit, and the mature ovule is a seed.
What do you mean by Seeds?Seeds may be defined as the unit of reproduction of a flowering plant, capable of developing into another such plant.
Flowers are the parts of the plant that are responsible for the production of fruits and seeds. The part of the flower that becomes a fruit is called the ovary.
Therefore, the part of the plant that produces fruit and seeds is the pistil.
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Two scientists do not agree which type of grocery bag is better for the environment. What is the most likely outcome of their disagreement?
Answer:
The most likely outcome of their disagreement is the use of cloth tote bags
Explanation:
PLEASE HELP ME TIMED QUIZ
Which of the following is not a factor in determining population size?
a.
the food supply
b.
birth rate
c.
available niches
d.
detritivore activity
Please select the best answer from the choices provided
A
B
C
D
Answer:
Detritivore activity is the correct answer!
Hope it helps! ❤️
Answer:
D
Explanation:
Relate plant structure and function to the process of photosynthesis and respiration
Answer: Photosynthesis is a process through which green plants prepare their food by using carbon dioxide and water as reactants in the presence of sunlight energy. The food produced in the form of carbohydrate. Respiration is the process in which the biochemical oxidation of the food occurs.
Explanation:
The plant structures like leaves are specialized for performing the process of photosynthesis. These leaves have chlorophyll pigment which traps the light energy from sun which is required for splitting the molecules of water in the process of photosynthesis. Respiration occurs through stomata in leaves. But it also occurs in stems through lenticels and in specialized roots called pneumatophores via tiny pores.
Which is not a cost for organisms that sexually reproduce?
Answer:
Identical shape and structure.
Explanation:
Those organisms that reproduce sexually have high variations and differences between the parent and its offspring. They are not identical to each other because the offspring gains half characteristics from male parent and half from the female parent making it different from its parent. Identical feature is present in the organisms that reproduce through asexually means from only one parent so the identical shape and structure is not the cost of sexual reproduction.
2. 2,3-bisphosphoglycerate is an allosteric inhibitor of oxygen binding to hemoglobin. a. Acclimatization to high altitude involves numerous physiological and biochemical changes, including an increase in the concentration of 2,3-bisphosphoglycerate in red blood cells. Explain why the 2,3 bisphosphoglycerate concentration increases at high altitude. b. The 2,3-bisphosphoglycerate concentration in maternal red blood cells also increases during pregnancy. Why
Answer:
A. At high altitude, increase in 2,3-bisphosphoglycerate (BPG) ensures that enough oxygen is delivered to the tissues despite the low oxygen saturation levels there.
B. An increase in 2,3-bisphosphoglycerate (BPG) is necessary during pregnancy as it ensures that both the pregnant woman and developing fetus have enough oxygen for their metabolic needs.
Explanation:
Atmospheric pressure is low at high altitudes with the result that oxygen molecules in the air are further apart. The reduction of oxygen availability in the air thus reduces the oxygen saturation in the blood and brain. Oxygen saturation levels refer to the extent hemoglobin is bound or saturated to oxygen.
2,3-bisphosphoglycerate (BPG) is an allosteric inhibitor of oxygen binding to hemoglobin. At low concentration, oxygen delivery to tissues is low while at hgh concentrations, oxygen delivery to tissues increases. It ensures that oxygen bound to hemoglobin in blood from the lungs is delivered to the tissues. Thus, at high altitude, increase in BPG ensures that enough oxygen is delivered to the tissues despite the low oxygen saturation levels there.
B. During pregnancy, there is a significant increase in oxygen demand. This is due to a 15% increase in the metabolic rate and a 20% increased consumption of oxygen as the developing fetus obtains nutrients and oxygen from the mother's blood.
An increase in 2,3-bisphosphoglycerate (BPG) is necessary during pregnancy as it ensures that both the pregnant woman and developing fetus have enough oxygen for their metabolic needs.
One scientist kept 20 grams of a radioactive material in a container. What will be the
mass of the radioactive material left in the container after 2 half lives?
40 grams
4 grams
10 grams
5 grams
After one half-life, there would be 10 g of the material left.
After two half-lives, there will be 5 g of the material left.
Therefore, 5 grams is the correct answer.
What is the unit of grams?The basic unit of mass or weight in the metric system is the gram. The most frequently used units of mass or weight used in the Canadian food industry are the gram and kilogram. Some of the types of grams are:-
Unit Abbreviation Mass (Weight)
kilogram kg 1000 grams
hectogram hg 100 grams
decagram dag 10 grams
gram g 1 gram
Therefore, last option is the correct answer.
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Some of the largest, and most beautiful, natural crystals of
can be found in the Naica mine.
a) Gypsum
b) Diamond
C) Limestone
d) Quartz
Answer: c)limestone
Explanation:
Which of the following tests are used to diagnose the presence of HIV? pap smears Western Blot & ELISA Eastern Blot & HISA Pregnancy tests
Answer:
ELISA Eastern Blot
Explanation:
Q1(Describe the two eukaryotic animal organelles that have roles similar to the organs of the human digestive system)Q2(Describe how proteins are made packaged and transported within the cell plz help fast
Answer:
Describe the two eukaryotic animal organelles that have roles similar to the organs of the human digestive system
→Two eukaryotic animal cell organelles that have roles similar to the organs of the human digestive system are lysosome and mitochondria.Describe how proteins are made packaged and transported within the cell
→Vesicles transport the proteins from the ribosomes to the Golgi apparatus, a.k.a Golgi complex, where they are packaged into new vesicles. The vesicles migrate to the membrane and release their protein to the outside of the cell. Lysosomes digest and recycle the waste materials for reuse by the cell.Answer:
lysosomes and mitochondria.[tex] \: \: \: \: \: \: \: \: \: [/tex]
Which statement provides the best explanation of the difference in biomass of organisms found at each trophic level?
Answer: organisms at higher tropic levels have less energy available to them in organisms at lower trophic levels
Explanation:
What is the total amount of carbon removed from the atmosphere each year by the ocean and land plants, as shown by the arrows? (from carbon cycle gizmo)
Answer:
Either carbon got here by diffusing from the atmosphere, by decomposing marine life, or from circulating water from the deep ocean.
The ocean absorbs more carbon dioxide from the atmosphere than the land does.
The surface ocean takes in approximately 90 Gigatons of carbon per year.
Your welcome!
Explanation:
Plz help me I am timed!!
Answer:
galaxy
Explanation:
Answer:
D.) galaxy
Explanation:
hopes this helps!!!
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:
D
Explanation:
Since algae is the start or the foundation of the food chain, this would mean that animals that eat the algae will be more commonly found here. And where their are consumers, predators are to follow.
Hope this helps :)
Answer:
D
Explanation:
Which of the following is correct regarding expiration?
diaphragm relaxes, volume increases, pressure decreases and air moves into the
lungs
diaphragm relaxes, volume decreases pressure increases and air moves out of
the lungs
diaphragm relaxes, volume decreases, pressure decreases and air moves out of
the lungs
diaphragm relaxes, volume decreases, pressure decreases and air moves into the
lungs
sley
diaphragm relaxes, volume increases, pressure increases and air moves into the
lungs
diaphragm relaxes, volume increases, pressure decreases and air moves out of
the lungs
Choose one of the two following to answer: Let me know which question you chose to answer. Only answer
one.
A. Choose one way a predator captures prey and describe it.
B. Choose one way prey avoid predators and describe it.
Answer:
Remaining silent.
Explanation:
Remaining silent, seeking refuge, and reducing overall activity levels are the ways that is used by the prey to avoid or to save itself from the predators. The prey remain silent when its senses the presence of predators because to stop giving cues to the predators to its presence. Some prey hide itself in the place for sometime in order to save itself from the attack of the predator while some preys decreases daily activities in order to decrease the cues given to the predator for its presence.
Which of the following is composed of monosaccharide monomer units? A.nucleic acids B. proteins C.carbohydrates D. lipids
No LINKS PlEASE
Answer:
c
Explanation:
Monosaccharides are the building blocks of disaccharides (such as sucrose and lactose) and polysaccharides (such as cellulose and starch).
Higher Classifications: Carbohydrate; Sugar
The correct option is (c) carbohydrates .
The monomer units for constructing DNA and RNA are nucleotide bases, whereas amino acids, sugar residues, fatty acids, and acetyl groups are the monomers for proteins, carbohydrates, and lipids, respectively.Large polymers made of hundreds of monosaccharide monomers are known as polysaccharides, sometimes known as glycans. Polysaccharides, in contrast to mono- and disaccharides, are not sweet, and they typically are not soluble in water. The monomeric units of polysaccharides are joined by glycoside, linkages, just like disaccharides.What units are carbohydrates made up of?In the case of carbohydrates, the small repeating units are called monosaccharides. Carbohydrates contain only carbon, hydrogen, and oxygen.Learn more about monosaccharide monomer units brainly.com/question/4939229
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Select ALL the correct answers.
Climate change can affect biodiversity in many different ways. What are potential consequences of climate change on biodiversity?
extinction of certain species
decrease in the background extinction rate
alterations in plants' growing seasons
x
reduetion in the frequeney of natural disasters
2
flowers blooming before pollinators are active
new organisms moving into an ecosystem
Next
entum. All rights reserved
Answer:
1, 3, 5, and 6
Explanation:
Name the 4 bases found in DNA.
Answer:
thyminene, T
adenine, A
guanine, G
cytosine, C
Explanation:
Answer:
Adenine, thymine, cytosine and guanine
Explanation:
Give me your best shot of explaining how this occurred. This is different from the twins as this time both parents have darker skin, some of the offspring share that same skin color and some are albino
which health issue is associated with exposure to indoor air pollution
Answer:
irritation of the eyes,nose and throat;headaches,dizziness,fatigue;respiratory diseases,heart disease,and cancer.
Explanation:
(hope this helps)
Answer:dddddddddddddddddddddddddddddd
Explanation:
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
Which list shows a possible order in which energy moves through an ecosystem?
1 herbivore, carnivore, Sun, producer, decomposer
2 Sun, producer, herbivore, carnivore, decomposer
3 Sun, producer, predator, consumer, decomposer
4 producer, Sun, carnivore, herbivore, decomposer
Answer:
2. Sun, producer, herbivore, carnivore, decomposer
Need help!!! asap due in a hour
a heterozygous chicken with black feathers mates with a white chicken whats the possiblility the offspring will be black
Answer:
if black feathers are the recessive gene than there is a 0% of black feathers and if its dominate than there is a 100% chance of black feathers
Explanation:
b b
w bw bw
w bw bw
Which of the following is not an argument in favor of aquaculture?
A. Competition with fishermen
B. Reduction in seafood trade deficit
C. Job creation
D. Revenue generation
Answer: A. Competition with fisherman
Explanation:
I just took this test and also process of elimination its the only one that makes sense. :)
Answer:
Its A.
Explanation:
just took the test
There is a sudden decrease in the food availability for wading birds. Make a claim about how the different levels of organization shown in the diagram will be affected. Summarize evidence to support your claim and explain your reasoning.
Answer:
I'm sorry I can't answer this I'm trying to get more points
what is the strongest known poison that is undetectable completely
Answer:
The strongest known poision that is undectable completely are:
Arsenic,Cyanide, Thallium
what are four characteristics of viral genomes that may vary among viruses?
Answer:
l
Explanation:
Answer:
the answers are nucleic acid type, size, complexity, and the information transfer pathways.
Explanation:
Hope this helps