Answer:
b
Explanation:
I took test
As hawkeye and the men neared the huron encampment, what signal did they agree to give in order to warn one another?
Put in order from least complex (1) to most complex (4). atom, organ,tissue,cell
______ causes diffusion of new water molecules out of the xylem and into the leaf.
1.Transpiration
2.Pollination
3.Photosynthesis
4.None Of The Above
Answer:
1. Transpiration
Explanation:
Transpiration is a physiological process by which plants lose water in the form of vapours through the aerial parts of a plant. Transpiration may be stomatal, cuticular or lenticular. But most of the transpiration is carried out through stomata. It is a wasteful process but it is necessary for the plants as it promotes water absorption and gives a cooling effect to the plants.
The percentages of the daily values on food packages are given in terms of a person requiring _____ calories each day.
Answer:
27% I think, I'm not sure
Explanation:
How are oceans directly affected by increased carbon dioxide concentrations in the atmosphere?
Oceans are becoming less acidic.
Oceans are becoming less turbid.
Oceans are becoming more acidic.
Oceans are becoming more turbid.
Answer:
Oceans are becoming more acidic.
Explanation:
Increased concentrations of carbon dioxide in atmosphere has led to more absorption of the gas by oceanic water. When dissolved in water, carbon dioxide has forms carbonic acid. Hence, increased carbon dioxide concentrations in air is making the oceans more acidic in nature. Increased acidity of oceans would adversely affect the aquatic life.
Which biome has the greatest area on earth?
The largest biome according to land in the world is Taiga, also known as boreal. It covers almost 30% of the world’s forest and by country it covers the land of North America, Canada and Russia. There are many categories of biomes according to their specific quality or reason like dessert, rainfall etc.
At higher doses, __________ can cause hallucinations, feelings of strength, seizure, and coma.
Answer:
ketamine , dextromethorphan & PCP - D. All of the above
Explanation:
Which of the following is a method used to prevent soil depletion?
a-Adding fertilizers
b-Planting grasses on slopes
c-Dune fences
please help please
The human abo blood group is controlled by a single autosomal gene with three alleles, ia, ib and i. individuals with either the iaia or iai genotypes have blood type a; those with ib ibor ibi have blood type b; those with iaib have blood type ab; and those with ii have blood type o. imagine a mother with type-a blood, and a father with type-b blood have a baby with type-o blood. what is the probability that any given child of this couple will have type-o blood?
When a hostname is configured through the cisco cli, which three naming conventions are part of the guidelines?
The theories on the expansion of the universe ?
a. may harm science if proved invalid
b. may be proved invalid by new discoveries
c. are weakened by frequent examinations
d. are too durable to change when re-examined
What are the three levels into which most federal and state cases are divided?
A social-conflict analysis suggests that schooling in the united states developed in the late nineteenth century because that was the time that
What consequences of heavy drinking do men and women experience differently? select all that apply?
Discuss the connection between viruses and cancers, giving possible mechanisms for viruses that cause cancer.
Cells that gather information and control body functions are ________.
Which of the following is classified as multicellular green algae?
1.Spirogyra
2.Ulva
3.Chlamydomonas
4.None Of The Above
Answer:
The correct answer option 2. Ulva.
Explanation:
Ulva is a flat green multicellular alga growing from a discoid holdfast. The membrane of the Ulva is 2 cells thin, translucent, and soft and grows attached with or without small disc-shaped holdfast.
The chloroplast is cup-shaped in some cases but a parietal plate in others with 1 to 3 pyrenoids in number. There are some Ulva species that are similar and difficult to differentiate.
Thus, the correct answer is option 2. Ulva.
why do scientists believe that life first emerged from the ocean and onto land well after the ancestors of modern day cyanobacteria populated the earth
Answer:
Since the ancestors of modern day cyanobacteria added oxygen to the primitive reducing atmosphere of earth.
Explanation:
The primitive atmosphere of the earth did not have oxygen. So, life was not possible on land. The ancestors of modern-day cyanobacteria had the ability to carry out oxygenic photosynthesis which in turn releases oxygen as a by-product. Hence, these ancestors of modern-day cyanobacteria populated the land and added oxygen to the atmosphere of the earth.
Once enough oxygen was added to support the other life forms, aquatic life forms gradually started occupying the land habitats.
Which muscle tissue is used for voluntary movement and bears striations?
Water is a _____ molecule. ionic covalent polar covalent reversible
Water is a polar molecule
Brainliest answer please
One function of the gallbladder is to ____.
The gallbladder's primary role is to store and concentrate bile, a digestive fluid which helps in the digestion of fats in the small intestine. It releases bile when we consume a high-fat meal.
Explanation:The primary function of the gallbladder is to store and concentrate bile, a digestive fluid produced by the liver. Bile aids in the digestion of fats in the small intestine. When we consume a meal, especially one that is high in fat, the gallbladder contracts and releases this stored bile into the small intestine through a series of ducts, facilitating the digestion process.
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The graph above shows the progress of an enzyme-catalyzed chemical reaction. Based on the graph, this enzyme
A. works optimally at 5°C
B. works optimally at 33°C
C. begins to denature above 25°C
D. begins to denature below 20°C
The right answer is C. begins to denature above 25°C
In biochemistry, denaturation is the process by which a biological macromolecule, nucleic acid or protein loses its normal three-dimensional conformation: the proteins lose their folding and unfold, the paired strands of the nucleic acid duplexes separate. This three-dimensional conformation is most often necessary so that the biological macromolecules can fulfill their function and thus the inactive denaturation in general these biological macromolecules.
Denaturation can be done by:
*Temperature: The increase in temperature causes thermal agitation of the atoms of the molecule. This causes a break in intermolecular interactions.
*PH change
*Radiation
*Chemical agents: chaotropic agents, bases, acids, reducing agents, detergents, heavy metal ions.
The combination of a chemical reaction through which an organism builds up or breaks down materials as it carries out its life processes is called
How many external openings are located at the poster of the frog’s body (for reproduction, urination, and defecation)?
A type of white blood cell that engulfs foreign organisms and infected, damaged, or aged cells, and that is particularly prevalent during the inflammatory response is a
Which discovery did Gregor Mendel make?
Traits are inherited independently of each other.
Traits are inherited as a tetrad.
Traits are inherited as homologous pairs.
Traits are inherited as a set, from one parent.
Answer;
Traits are inherited independently of each other
The discovery that Gregor Mendel made was that traits are inherited independently of each other.
Explanation;
-Genes located on different chromosomes will be inherited independently of each other. This is the principle of independent assortment. For example, Mendel cross-bred pea plants with round, yellow seeds and plants with wrinkled, green seeds. Only the dominant traits (yellow and round) appeared in the F1 progeny, but all combinations of trait were seen in the self-pollinated F2 progeny.
Proteins act as ____________ and help to maintain proper ph in blood by picking up or donating hydrogen ions.
Proteins in the blood act as buffers, maintaining accurate pH levels by collecting or donating hydrogen ions. They play a significant role in the oxygen-carrying protein hemoglobin and assist in regulating fluid-electrolyte balance. Overall, buffers help blood and other body fluids maintain a narrow pH range, crucial for proper physiological functioning.
Explanation:Proteins in the blood act as buffers, helping to maintain proper pH by picking up or donating hydrogen ions. Nearly all proteins can function as buffers because they are made up of amino acids, which contain charged regions that can bind these ions. This buffering ability accounts for two-thirds of the buffering power of the blood and most of the buffering within cells. Other buffer systems functioning in blood plasma include plasma proteins, phosphate, and the bicarbonate and carbonic acid buffers. The kidneys also aid in maintaining acid-base balance by excreting hydrogen ions and generating bicarbonate.
Proteins, especially hemoglobin in red blood cells, play a crucial role in maintaining the pH in our body. In addition to acting as buffers, proteins help regulate fluid-electrolyte balance by attracting fluid, which ensures a balance of fluids in various parts of the body. They also serve as transport agents for electrolytes in and out of the cell, thus maintaining a healthy balance of these ions.
Proper physiological functioning relies on a tight balance between the concentrations of acids and bases in the blood, measured using the pH scale. Buffer systems, including proteins, permit blood and other bodily fluids to maintain a narrow pH range, even when exposed to external changes.
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Interstitial fluid is located in the _______.
Interstitial fluid is located in the extracellular fluid between the cells. It provides nutrients to cells, facilitates intercellular communication, and aids in removing waste.
Explanation:Interstitial fluid, also known as tissue fluid or intercellular fluid, is located in the extracellular fluid (ECF) between the cells. It bathes and surrounds the cells of multicellular animals, providing nutrients to the cells, facilitating intercellular communication, and removing waste. Interstitial fluid is similar to blood plasma and there is free exchange of materials between them through the capillaries.
In the little albert study, an 11-month-old boy was taught to fear a rat through the use of ______.
a. classical conditioning
b. hypnosis
c. operant conditioning
d. punishment
"which rock type is associated with a high- energy environment (such as a very turbulent stream)?"
The rock type which is associated with a high- energy environment such as a very turbulent stream is called conglomerate rock. This sedimentary rock contains large rounded clasts. Small particles and/or chemical cement bind the rock together. These kinds of rocks may vary according to their compositions. These clasts which are round may be minerals such as quartz or these could be sedimentary, metamorphic, or igneous rock fragments. And the large clasts may be because a mixture of sand, mud and chemical cement bonded them together. These rocks are formed when sediments of rounded clasts of at least two millimeters in diameter accumulate.