All organisms are dependent on a healthy carbon dioxide-oxygen balance. Photosynthesis and cellular respiration are key processes in maintaining this balance. Your class is conducting a lab experiment to investigate the relationship between photosynthesis and cellular respiration by observing how carbon dioxide cycles through a biological system. To conduct the experiment, each group set up four test tubes containing 30 ml distilled water and 3 ml of bromothymol blue. Bromothymol blue is a pH indicator that changes from blue (alkaline) to yellow (acid). When carbon dioxide dissolves in water, it produces carbonic acid, turning the indicator from blue to yellow. The level of CO2 was inferred from a change in the indicator color.

A snail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. Tubes were placed under a grow light for 24 hours and the results recorded. The test tubes were then covered for 24 hours to produce a dark environment and the results recorded. Which statement best explains the change in Test Tube D from the light setup to the dark setup.
A) The rate of photosynthesis decreased in the dark, thus the elodea used less CO2. The elodea and snails produced less CO2 through cellular respiration, causing the CO2 to be in equilibrium, making the solution more neutral (yellow).
B) The rate of photosynthesis decreased in the dark, thus the elodea used less CO2. The elodea and snails continued to produce CO2 through cellular respiration, raising the level of CO2 in the tube, causing the solution to become more acidic (yellow).
C) The rate of photosynthesis decreased in the dark, thus the elodea used more CO2. The elodea and snails continued to consume CO2 through cellular respiration, lowering the level of CO2 in the tube, causing the solution to become more basic (yellow).
D) The rate of photosynthesis decreased in the dark, thus the elodea used less CO2. The elodea and snails continued to consume CO2 through cellular respiration, raising the level of CO2 in the tube, causing the solution to become more acidic (yellow).
Eliminate

Answer:

The answer is A. Animal deaths

Explanation:

Just got it right on my assignment hope this helps :)

One of these is called the leading strand, and it is replicated continuously in the 3' to 5' direction. The other strand is the lagging strand, and it is replicated discontinuously in short sections. These sections are called Okazaki fragments, and they are short lengths of DNA.

The leading strand in DNA replication is synthesized continuously in one direction, while the lagging strand is synthesized in segments due to their antiparallel structure, creating Okazaki fragments.

The leading strand and the lagging strand are two terms used to describe the way in which DNA replication occurs. DNA replication is a process that is integral to the biological function of living organisms.

The leading strand is synthesized continuously in the 5' to 3' direction. DNA contains two strands which are antiparallel - meaning they run in opposite directions. Due to the nature of the DNA polymerase enzyme which can only add nucleotides in the 5' to 3' direction, one strand - the leading one, can be replicated continuously in the same direction as the replication fork advances.

The lagging strand, however, is replicated in segments known as Okazaki fragments due to the antiparallel directionality of the DNA strands. The creation of these short, separate Okazaki fragments is then later joined together to make the complete strand.

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so the first one is sodium chloride

second one is Magnesium oxide

Third one is Calcium hydroxide

You just have to write them in their word form;

1 - 3 molecules of sodium chloride.

2 - 4 molecules of magnesium oxide.

3 - [tex](OH)^{2}[/tex] stands for "hydroxide" and can be added to many different molecules.

Hope it helped,

BioTeacher101

Cancer is caused by unregulated cell division, and not by any type of germ.  Cancer, therefore, could not be explained by the germ theory.  Malaria is a protozoan, HIV and flu are both viruses.

You haven't included answer choices, so my answer may not match up with the answers you have to choose from.  However, this has to do with the polar reversal theory, which was developed after the discovery of magnetic striations at the bottom of the Marianas Trench.  According to this theory, Earth's magnetic poles reverse every 200,000-350,000 years due to the constant recycling of Earth's crust through subduction of tectonic plates.

Answer:

A

Explanation:

hope this helps

It may be deposition

Deposition is the answer

Not necessarily. Monkeys have the same DNA as us

Hope that helps feel free to ask more questions

Brainliest??

Final answer:

Yes , Humans are considered the most intelligent species due to their cognitive abilities. Other animals like apes and dolphins also exhibit significant intelligence. Humans' unique ability to reflect on the universe sets them apart, although intelligence varies across species and comes with different adaptations and costs.

Explanation:

In the animal kingdom, humans are often considered the most intelligent species due to their large and complex brains, which allow for a remarkable capacity for abstract thought, language, introspection, problem-solving, and culture. This high intelligence enables humans to learn behaviors to an extent unmatched by any other species. However, other animals also showcase significant intelligence; for example, apes, such as chimpanzees and gorillas, are capable of learning behaviors and using tools. Additionally, other species like dolphins, octopuses, and ravens have demonstrated the ability to solve complex problems, indicating that intelligence has evolved in multiple forms across different branches of the animal kingdom.

While Homo sapiens may appraise themselves as the most intelligent beings, it's important to note that intelligence comes at an energy cost and evolves incrementally. Moreover, other animals may possess strengths and adaptations in different areas where humans may not be as competent, emphasizing the diverse spectrum of intelligence found in nature.

Our evolutionary cousins, such as orangutans, share human-like traits and behaviors, underpinning our shared genetic heritage. Regardless, humans' ability to understand and question the world and universe at large is a unique quality that sets our species apart. The continuous advancements in various fields through human intellect suggest that, at least for now, humans are the only known species with such a heightened level of cognitive complexity.

The correct answer is 4. Being startled is a reflexive action, and waving to a friend is a voluntary action.

Reflexive action occurs involuntarily in a response to a stimulus whereas, a voluntary action is consciously done by a person. The person has total control on the action. A voluntary action is controlled by the brain and involuntary action is controlled by the spinal cord.

Therefore, in the given question, being startled is a reflexive action, and waving to a friend is a voluntary action.

Answer:

Being startled is a reflexive action, and waving to a friend is a voluntary action.

Explanation:

Getting startled is a quick response that doesn’t require thinking. So, it’s a reflex action. On the other hand, waving is a voluntary action that requires thinking and coordination between the brain and the muscles.

Answer:A phosphate

Explanation:

just got a 100 on the usa test prep for bio

if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume.

As a cell becomes larger, its volume increases faster than its surface area. This difference in growth rate can limit the cell's size, as the surface area might not be able to meet the metabolic demands of the increased volume.

As a cell becomes larger, its volume increases at a significantly higher rate compared to its surface area. This phenomenon is due to the mathematical principles of scaling. Essentially, volume, which is spatial and involves three dimensions (length, width, and height), increases exponentially (by the power of 3) whereas surface area, which only incorporates two dimensions (length and width), increases quadratically (by the power of 2).

This difference in growth rates could lead to a problem. When a cell's size increases, its metabolic demand also grows. Metabolic demands are met by the materials that enter the cell from its surface area (like oxygen and nutrients). So, if a cell becomes too large, the surface area might not be sufficient to support the increased volume, thereby limiting the cell's size.

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Answer:

a. self reflection

Explanation:

correct on quiz

edge2020

Answer:

The answer is self reflection.

Explanation:

It is pretty simple when you start to understand it.

Answer:

The answer is C. energy

Explanation:

Answer:

c) energy i took it on usatestprep

the answer is faster

 I believe this is False because from c to d does not use mechanical energy.

Answer:

False

Explanation:

Water isn't mechanical energy

I'm sorry if it's wrong

Explanation:

DNA replication is a process common to both prokaryotes and Eukaryotes with few differences and similarities.

Differences:

1. Origin of replication (ori) : is a sequence of the genome where initiation of replication takes place. Prokaryotes have only single ori while eukaryotes have multiple ori as the DNA is large in eukaryotes so require multiple or to replicate whole DNA.

2. Replication site: prokaryotes lack nucleus where DNA is present in the cytoplasm while eukaryotes posses nucleus which encloses DNA. Therefore, replication takes place in cytoplasm in prokaryotes while in the nucleus in eukaryotes.

Similarities:

1. Enzymes: both posses same enzymes for DNA replication like DNA helicase, primase, polymerase.

2. The direction of synthesis: the enzyme DNA polymerase synthesizes new strand of DNA in the same direction that is 5' to 3' direction.

Thus, marked answer in the table are correct answer.

Answer:

Explanation:

I took the test

The correct answer is B.

Answer:

Images 1 and 4: atoms

Image 2 : compounds.

Image 3 (yellow doublets): molecules that are not compounds.

Explanation:

Atoms are the smallest entity and are made of three subatomic particles: protons, electrons and neutrons.

Two or more atoms are bonded together to form a molecule. A molecule can have atoms of same or different elements.

Compounds are the molecules that have atoms of different elements only.

Image 1 and 4 represent atoms while image 2 represents compounds. Image 3 (yellow doublets) represents molecules that are not compounds.

The answer is transcription.

Trascription is the process in which the information in the cell's DNA is used as a template to create RNA.

Answer:

Sexual reproduction gives path to genetic variability, which is crucial for both evolution and survival of the species.

Explanation:

Glucose can diffuse from the digestive tract into human bloodstream without first being digested.

Explanation:

Glucose is a respiratory substance which is ready to undergo oxidation.

Answer:

Glucose.

Explanation:

Glucose can diffuse first from the digestive tract into human bloodstream without being digested. Glucose gets digested in both the stomach and small intestine. When the food gets digested in the stomach then the carbohydrate present in the food breaks into smaller molecules of sugar which is also known as glucose.

The stomach and small intestine both absorbs the glucose and release it into bloodstream. That's why our body needs to store glucose for energy.

The possible genotypes of the children could be "XX, XY, XX^h, Y^hX"

They could have 50% regular girls with one being a carrier. 25% of a male who does not have it, and 25% chane of  male who does have it.

I believe it is determined by the drug, but true

Final answer:

Drugs indeed produce physiological or psychological effects in humans, which is true. They include various categories such as hallucinogens, depressants, and stimulants, and can be consumed in different ways. Psychoactive drugs in particular affect the central nervous system and can lead to addiction and abuse.

Explanation:

Drugs are substances that produce physiological or psychological effects in humans. This statement is true. Drugs are chemical substances that can bring about changes in an organism's physiology or psychology when consumed.

Drugs are distinct from food and substances that provide nutritional support. They can be administered in various ways, including inhalation, injection, smoking, ingestion, absorption via a transdermal patch, suppository, or dissolution under the tongue.

There are several categories of drugs that operate on human physiology, including hallucinogens, depressants, and stimulants. Researchers and medical professionals classify drugs according to their effects on the body and mind.

Psychoactive drugs, such as caffeine and alcohol, affect the central nervous system and influence nerve impulse transmission in the brain. These types of drugs can lead to addiction and abuse, signified by tolerance, withdrawal symptoms, physical dependence, psychological dependence, and the potential need for increased dosages due to increased tolerance.

Meters are correct you have centi, milli, kilo

The metric unit for measuring length is the meter, defined as the distance light travels in 1/299,792,458 of a second in a vacuum. For larger or smaller lengths, multiples or fractions of the meter (such as kilometers, centimeters, or millimeters) are used.

The metric unit for measuring length is the meter (m). This was initially defined as 1/10,000,000 of the distance from the North Pole to the equator but has been updated for precision. Nowadays, it is defined as the distance light in a vacuum travels in precisely 1/299,792,458 of a second.

Regardless of the length being measured, the metric system uses the meter as the base unit. To accommodate different magnitudes of length, we use multiples or fractions of the meter. For very long distances, we use kilometers (1 km = 1000 m = 10³m), while for shorter distances, we use centimeters (1 cm = 0.01 m = 10⁻² m) or millimeters (1 mm = 0.001 m = 10⁻³ m).

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The answer is Animalia.

I hope this helps!

Cheers, July.

1. parasite - infections in red blood cells

2. The Haber process

3. Antibiotic

4. They do not share all characteristics of living things, however they have a genetic material.

5.

6)

a> Amoeba. A pseudopod that has no definite shape.  

b> iii. Grows on leather footwear.

Answer:

A protein kinase is an enzyme which catalysis the phosphorylation reaction.

The phosphorylation can either activate or deactivate other proteins or receptors.

A protein kinase cascade refers to the series of events in which a chain reaction of phosphorylation takes place by which thousands of proteins are phosphorylated.

It helps in signal transduction through which signals (usually hormone) from outside the cell are amplified and transferred to the target molecule present inside the cell.

For example, tyrosine kinase cascade.

A protein kinase cascade is a process in signal transduction where a protein kinase enzyme initiates a series of phosphorylation reactions, triggering cellular responses. It enhances the efficiency and speed of the hormonal response and leads to significant changes in the cell's environment. This process amplifies the original signal, leading to precise and quick cellular responses.

A protein kinase cascade is a crucial biological process in signal transduction within a cell, contributing to cellular responses to external stimuli. This process gets triggered by the activation of a protein kinase enzyme which initiates a series of reactions. These reactions involve the phosphorylation of specific molecules by enzymes known as kinases. In other words, the kinases add phosphate groups to proteins, resulting in changes in the proteins' shape and hence activating or inactivating them. Second messengers, examples being cAMP and Ca²+, are often utilized to transmit signals within a cell.

This kinase cascade boosts the efficiency, speed, and specificity of the hormonal response. It can initiate thousands of signaling events almost instantly, even in response to a very low concentration of hormones in the bloodstream. Subsequent to the ligand binding to the cell surface receptor, this sets off a chain of events, leading to a reaction that causes changes in the cell's environment. These changes could include an increase in metabolism or specific gene expression amongst others. Ultimately, the original signal gets amplified and precise responses are generated rapidly.

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Warm air rises, creating a low pressure region, and cool air sinks, creating a high pressure zone. Air flowing from areas of high pressure to low pressure creates winds. Air moving at the bases of the three major convection cells in each hemisphere north and south of the equator creates the global wind belts.

Warm air rises, creating a low pressure region, and cool air sinks, creating a high pressure zone. Air flowing from areas of high pressure to low pressure creates winds. Air moving at the bases of the three major convection cells in each hemisphere north and south of the equator creates the global wind belts.?

Some adaptations you would expect to see on plants growing in both biomes are Low-growing plants, Waxy leaves to protect against evaporation, Ability to grow in soils with very low nutrients and water, and The ability to quickly bloom and reproduce when conditions are right. Hope this helped!

b its b i know this question african

Answer:

Pacific

Explanation: