Answer:
CO2 and O2 are water-soluble molecules that diffuse freely across cell membranes.
Cells expend energy in the form of ATP hydrolysis so as to maintain ion concentrations that differ from those found outside the cell.
Explanation:
CO2 and O2 are highly soluble molecules in water due to their polarizability and their ability to react with water molecules and form new compounds. CO2 is 30 times more soluble in water than oxygen, which also has a high solubility. This ability allows these two molecules to diffuse freely across cell membranes.
Cells promote hydrolysis, that is, the breakdown of ATP molecules when they need to expend energy for any metabolic process, especially when they need to maintain a balance between ion concentrations inside and outside the cell. This is because ATP is a highly energetic molecule and its breakdown promotes energy for the cell to use in its activities.
22. What is an advantage of a double circulatory system in mammals?
A. Blood can flow down the body on the left and up the body on the right.
B. Blood can flow more slowly along the circulatory system.
C. Blood pressure stays the same throughout the circulatory system.
D. Oxygenated and deoxygenated blood are kept separate.
The answer is A.
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What happens during prophase?
answer:
During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses. The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes. ... The replicated chromosomes have an X shape and are called sister chromatids
Explanation:
Answer:
Which statement best describes how Poe creates mood in the excerpt?
Poe uses rhyme to create an optimistic mood.
Poe uses rhyme to create a nostalgic mood.
Poe uses rhyme and onomatopoeia to create a rowdy mood.
Poe uses rhyme and onomatopoeia to create a boastful mood.Explanation:
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Part E: Writing Your Paper
Using your materials from this task, write your research paper. Its length should be 1,000 to 1,250 words. When you’ve finished writing the paper, be sure to proofread your work to catch any errors in grammar, spelling, logic, or organization. Submit your completed paper along with this activity.
Course Activity: Human Effects on Ocean Ecosystems:Writing a Research Paper
In this activity, you will prepare a 1,000- to 1,250-word research paper about the effects of human activity on ocean ecosystems. You will focus on one particular human activity that has a negative effect on the ecosystem. You’ll also compare and contrast at least three existing solutions to prevent or manage the problem. The human activity you choose should be specific, be realistic, and have predictable effects on the ecosystem. For example, deforestation is a specific human activity that has a negative effect on forest ecosystems. At the end of the paper, you will write a one- to two-paragraph proposal describing a program to educate citizens on this problem and encourage them to do their part to prevent it.
What are the two main types of minerals?
Answer:
The two main types of minerals are macro minerals and trace minerals.
Explanation:
Macro means large in Greek. And your body needs larger amounts of macro minerals. Calcium, phosphorus, magnesium, sodium, potassium, chloride, and sulfur make up the macro mineral group.
A trace of anything indicates that only a small amount of it exists. Even while your body requires trace minerals, it only requires a small amount of each. Iron, manganese, copper, iodine, zinc, cobalt, fluoride, and selenium are examples of trace minerals.
The earth is considered to be in the Goldilocks zone.why?
Choose the correct ending to this sentence below and explain why? Many drugs are competitive inhibitors of specific enzymes. In such cases........
A. the amount of drug needed to achieve the same effect is increased as the substrate concentration increases.
B. the amount of drug needed to achieve the same effect is increased as the substrate concentration decreases.
C. substrate must be bound to the enzyme before the drug can bind.
D. the enzymes have to be allosterically regulated.
Answer: A. the amount of drug needed to achieve the same effect is increased as the substrate concentration increases
Explanation:
Competitive inhibition is when identical molecules to the substrate molecules gets bonded to the active site which then hinders the binding of the actual substrate. An example of competitive inhibitor is penicillin, since it blocks an enzymes active site which us used in the construction of the bacteria cell.
Then, the correct statement will be:
"Many drugs are competitive inhibitors of specific enzymes. In such cases, then the amount of drug that'll be needed to achieve the same effect is increased when the substrate concentration increases".
Therefore, the correct option is A.
When cells join together, what is formed?
A. Tissue
B. Organs
Answer:
a.tissue
Explanation:
when cells join together tissues are formed
when tissue join together organs are formed
Answer:
A. Tissue
Explanation:
The cells join together to form tissue. So, option (A) is the correct answer.
Which material is the medium of ocean waves?
A. Sand
B. Water
O C. Air
O D. Rock
SUBMI
Answer:
Water
Explanation:
A medium is the substance through which a wave can propagate. Water is the medium of ocean waves.
What is the purpose of colorful petals?
A. To attract insects
B. So pollen grains stand out
C. So birds avoid eating the plant
Answer:
The purpose of colorful petals is to attract insects
Answer:
b.
so pollen grains stand out
Select the correct answer.
A gardener crosses tall true–breeding pea plants with short true–breeding ones. Tall plants are dominant to short ones. He collects the seeds to grow F1 plants and then allows them to self–pollinate to form an F2 generation. Which of the following describes the traits of the offspring correctly?
A.
Three–fourths of the F1 and one–half of the F2 plants will be tall.
B.
All of the F1 and three–fourths of the F2 plants will be tall.
C.
Three–fourths of the F1 and all of the F2 plants will be tall.
Answer:
Explanation:
Let T = tall allele (dominant), t = short allele
True breeds are homo-zygous.
So the gardener is crossing TT with tt, with the resulting genotype of F1 all equal to Tt, i.e. all Tall hetero-zygous.
When the F1 pea plants are allowed to self-polinate, F2 results in Tt crossing with Tt, with the genotypes TT, Tt, tT and tt, and phenotypes 75% tall and 25% short, tall being dominant.
What part of the digestive system absorbs nutrients that our bodies need?
A. Mouth
B. small intestine
C. stomach
D. large intestine
Answer:
small intestine
.
is the correct answer
Answer:
B. small intestine
Explanation:
Small intestine absorbs the nutrients that our bodies need.
what structures are part of the digestive system ?
Answer:
hope it helps.
stay safe healthy and happy.Which kinds of cells carry out cellular respiration?
a. Plant cells
b. animals cells
c. bacteria cells
d. all cells
pls help
Answer:
B
Explanation:
Which is an advantage of a natural gas burning power plant over an oil burning power plant
Answer:
Natural gas is a fossil fuel that burns relatively cleanly.
When natural gas is burned for energy, it produces fewer air pollutants and carbon dioxide (CO2) than when coal or petroleum products are burned to produce the same amount of energy.
An advantage of a natural gas-burning power plant over an oil-burning power plant is that the burning of natural gas produces no or less amount of air pollution as compared to that of oil or coal burning.
What is Natural gas?Natural gas may be defined as a type of non-renewable energy resource that typically synthesizes deep under the earth's surface. This gas is a mixture of hydrocarbons that primarily consists of methane.
The burning of natural gas generally releases very less or no amount of air pollutants like carbon dioxide, and other greenhouse gases which are harmful to all living entities. Natural gas is typically cleaner, environment friendly, and burned for energy.
But when coal, oil, or other petroleum products are burned, they release huge amounts of pollutants into the environment and make it toxic for all.
Therefore, it is well described above.
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Which process occurs when liquid water becomes water vapor
easy biology question below first correct answer gets brainliest
Answer:
25%
Explanation:
Blood is blue in your body and turns red outside your body.
A. True
B. False
Answer: False
Blood does change color somewhat as oxygen is absorbed and replenished. But it doesn't change from red to blue. It changes from red to dark red. It is true that veins, which are sometimes visible through the skin, may look bluish.
Answer:
B. False
Explanation:
Blood is not blue in your body. It doesn't turns red outside your body. Your blood is red, both outside and inside your body.
Organisms need ___ to conduct essential life activities
Explain the general distribution of life in aquatic systems as a function of chemistry, geography, light, depth, salinity, and temperature.
Different types of organisms can exist in a variety of aquatic environments due to the fact that they can vary significantly from place to place and that organisms within each water system will have evolved to adapt to their specific environment.
How does light affect aquatic life?Sunlight plays a vital role in the ocean’s ecosystem. First, sunlight enters the water column, warms it, creates currents, and is then absorbed by phosphorous-rich phytoplanktons. Phytoplanktons use the energy captured by phototrophs (pigments like chlorophylls) to convert water and nutrients into organic matter.
Light availability determines the types of organisms that can live in a particular part of an aquatic environment. The deeper the water depth, the less light it can penetrate until there is no light at all.
The salinity of water affects its density which in turn affects the movement of ocean currents. It may also affect marine life which needs to regulate the intake of salt water. There is a relationship between salinity, temperature, and water density. Therefore, any change in temperature or water density will affect the salinity of the water in the area.
Water chemistry parameters (pH, dissolved organic carbon, and hardness) play a role in metal toxicity by influencing the bioavailability of aquatic species of metals in water.
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What part of the digestive system absorbs nutrients that our bodies need?
A. Mouth
B. small intestine
C. stomach
D. large intestine
Answer:
B. small intestine
Explanation:
The small intestine absorbs the most nutrients that our bodies need.
Which is a characteristic of cancer cells?
A. Cytokinesis stage is skipped
B. Contain multiple genetic change.
C. Cell cyclins function normally.
D. Controlled cell Division
Answer:
contain multiple genetic changeYou observe a tissue under a microscope. There appears to be a lumen on one side of the issue. Lining this lumen is a single layer of epithelial cells that seem to have long, fingerlike projections Beneath the projections, the cells seem to have the shape of shoeboxes and are packed tightly together. What type of tissue are you looking at? A. stratified squamous epithelium B. simple columnar epithelium C. simple cuboidal epithelium D. transitional epithelium
Answer:
D. Transitional epithelium
Explanation:
objects in stationary position possess what form of energy?
Answer:
potential energy
Explanation:
Which three industries would be the most directly affected if regulations and laws regarding deforestation became stricter?
Answer: Timber industry, paper industry, furniture industry.
How are photosynthesis and cellular respiration related? Check all that apply.
They are in a cycle.
They are not related.
They are almost opposites of each other.
They both produce oxygen.
Answer:
They are in a cycle.
They are almost opposites of each other.
Explanation:
These are the relations between photosynthesis and cellular respiration.
You are a forensic scientist about to enter one of two parallel universes: in one, you will be unable to use physics in any of your investigations; in the other, you will be unable to use chemistry in your investigations. Provide an example of a type of forensic science and explain how and why it would be impacted in each universe
Answer:
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Explanation:
Comparative research into non-exercise activity thermogenesis (NEAT) concluded that _____. A. lean individuals who are overfed spend the same amount of time engaging in NEAT activities daily B. obese individuals do not engage in NEAT activities C. obese individuals spend more time sitting than lean individuals D. lean individuals gain as much weight as obese individuals when overfed
Answer:
C. obese individuals spend more time sitting than lean individuals
Explanation:
Comparative research into non-exercise activity thermogenesis (NEAT) concluded that obese individuals spend more time sitting than lean individuals.
disadvantages of using inorganic manure
Answer:
Inorganic fertilizers are not entirely composed of the nutrients needed by the plants. It also contains salts and other compounds. These are not absorbed by the plants so they are left behind in the soil and build up over time.
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Which two words describe the grass in this food chain?
A. Autotroph, primary consumer
B. Heterotroph, producer
C. Heterotroph, primary consumer
D. Autotroph, producer
Answer: Autotroph, producer
Explanation: The grass gets eaten by primary consumer starting the food chain
In a food chain, the grass is referred to as an autotroph and producer. Therefore, option D is correct.
What are autotrophs?An organism is referred to as an autotroph or primary producer when it uses carbon from simple substances like carbon dioxide to create complex organic compounds. These creatures often obtain their energy from inorganic chemical reactions or light.
Both plants like blue-green algae and microorganisms like cyanobacteria are assumed to be autotrophs. Most plants are autotrophs because they create their own food through photosynthesis. But there are always exceptions to the norm. Some plants are parasitic and non-photosynthetic, getting their nutrition from a host.
Thus, the grass in a food chain is described as autotroph and producer. Therefore, option D is correct.
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