sample questions about water on ap bio exam

In the image, we can see a round segmented worm (A) and a flat unsegmented worm (B).

Worm A seems to belong to the phylum Annelid, which members are characterized by having its body divided into multiple segments, while worm B seems to be part of the Platyhelminthes phylum, with flat and unsegmented bodies given that they don't have a circulatory system.

Answer:

being invisible to a predator or prey is an advantage in the tropical rainforest

Plant cells have a cell wall, but animals cells do not. Cell walls provide support and give shape to plants. Plant cells have chloroplasts, but animal cells do not

Explanation:

hope this helps

The right optic tract is a fiber bundle that carries visual information from the right visual field of both eyes to the brain, while the right optic nerve is a cranial nerve that carries visual information from the right eye only.

The optic nerve is a paired cranial nerve that originates from the back of each eye and carries visual information from the retina to the brain. The right optic nerve carries visual signals from the right eye specifically, while the left optic nerve carries signals from the left eye.

After leaving the eye, the fibers from the nasal (inner) half of each retina cross over at the optic chiasm, resulting in the right optic tract carrying information from the right visual field of both eyes. On the other hand, the temporal (outer) half of each retina does not cross over, so the left optic tract carries information from the left visual field of both eyes.

In summary, the right optic tract carries visual information from the right visual field of both eyes, while the right optic nerve carries information exclusively from the right eye. The anatomical difference lies in the scope of visual field each structure represents.

To learn more about optic tract, here

https://brainly.com/question/31583598

#SPJ4

Answer:Cardiac

Explanation:Cardiac(Heart) muscles have irregular stripes.They are branched,have one nucleus per cell,fatigue resistant and are involuntary in action.

seven (7)

Explanation:

The pure water has a pH value 7 because it is neutral

Answer: it is 7

Explanation:

I took the test and got it right

The statements that correctly describe the bonding in benzene are:

Benzene is a planar, six-sided ring of carbon atoms linked by single bonds. Each carbon atom in the benzene ring is bonded to two other carbon atoms in the ring and one hydrogen atom.

The single bonds between the carbon atoms are conjugated, meaning that the electrons in the carbon-carbon bonds can move freely around the entire ring. This delocalization of electrons allows for increased stability and a lower energy state than if the electrons were localized in individual bonds. The delocalization of the electrons also creates a circular current of electrons that are spread out over the entire molecule, creating a completely conjugated system.

Learn more about benzene:

https://brainly.com/question/14788042

#SPJ4

A larger brain provided early hominins with enhanced cognitive abilities, improving problem-solving, memory, learning, and language skills.

Having a larger brain enabled early hominins to develop complex social structures, engage in advanced tool-making, and navigate their environment more effectively. The increased cognitive abilities facilitated problem-solving skills, allowing for the development of innovative strategies to obtain food, protect themselves, and adapt to changing environments. The improved memory capacity would have aided in learning and passing down knowledge from one generation to the next.

Additionally, language skills likely played a crucial role in communication and cooperation within social groups, enabling collective decision-making, enhanced hunting techniques, and the transmission of cultural practices. Overall, a larger brain provided early hominins with a competitive advantage in their ecological niche by enabling higher cognitive functioning.

To learn more about brain follow the link:

https://brainly.com/question/29407892

#SPJ4

Answer:

The most energy is being transferred between the 1st and the 2nd trophic levels.

Explanation:

At each step up the food chain, only 10 % of the energy is passed on to the next level, while approximately 90 % of the energy is lost as heat.

Hope this will help :)

Bill wants to determine his blood type, so he takes a few drops of blood from a puncture wound in his finger and mixes it with various antisera. His blood cells agglutinate when mixed with the anti-A serum but not with the anti-B. Therefore, the true statement is: option (D) states "Bill's plasma contains B antibodies".

There are four types of blood groups: type A, type B, type AB, and type O. Your blood group depends on the presence or absence of antigens or protein molecules found on the surface of red blood cells.

Agglutinogens are antigens on the surface of red blood cells that cause them to clump together or agglutinate when mixed with the appropriate serum. Because Bill's blood cells agglutinate when mixed with anti-A serum, he must have type A blood. When anti-B serum is mixed with Bill's blood, the blood cells do not agglutinate. Which indicates that he does not have type B blood.

Bill's blood cells agglutinate when mixed with anti-A serum but not with anti-B, indicating that Bill's plasma contains B antibodies. The agglutination reaction is caused by the presence of antigens or specific protein molecules found on the surface of red blood cells.

Bill's blood type is A, and his plasma contains antibodies to the B antigen. It means that Bill cannot receive blood transfusions from donors with type B blood or from donors with type AB blood. In summary, Bill's plasma contains B antibodies.

To know more about red blood cells refer here:

https://brainly.com/question/17890844#

#SPJ11

Introns, the intervening sequences that are omitted, and exons, are the expressed sequences that are spliced together. (Intons - exons)

Introns and exons are the nucleotide sequences in a gene. Introns are removed by RNA splicing as the RNA matures, meaning that they are not expressed in the final messenger RNA (mRNA) product, while exons continue to be covalently bound to each other to make the mature mRNA. Introns can be thought of as intervening sequences, and exons as expressed sequences.

RNA splicing is a method in which pre-mRNA is made into mature mRNA, by removing introns and fusing exons. There are several splicing methods, depending on the organism, the type of RNA or intron structure, and the presence of a catalyst.

Learn more about introns and exons at https://brainly.com/question/26464408

#SPJ4

Answer:

A gland is an organ which produces and releases substances that perform a specific function in the body. There are two types of gland. Endocrine glands are ductless glands and release the substances that they make (hormones) directly into the bloodstream.

So technically there are no such things as organs without glands

Answer:

The phase in which two haploid daughter cells are produced is telophase.

Explanation:

Answer:

the genotype of the offspring would be RB, BR, RB, BR (well the genetic pattern of the fish varies for example the fish could have Bg meaning dominant blue and maybe recessive green im making this up and going into detail too much). the phenotype would have to be some sort of mix.

Explanation:

the genotype is the genes on the inside. i just use a table to mix it and assumed both fish were just pure blue/pure red. the phenotype is what's visible. it would be a mix such as maybe purple or red here and blue there. this is since they are both dominant and have to be expressed. same for blood types (AB blood). sorry for late answer.

Answer:

I think it is the grasshopper.

Answer:

Based on the food chain, we cannot tell for sure

Explanation:

You can only identify omnivores with a food web. In food chains it only shows one source of food for each animal, so we wouldn't know if one of the animals eats both autotrophs and heterotrophs.

1. True 2. True 3. Scientific investigation is characterized by a good theoretical base and a sound methodological design. These characteristics are both related to the  Option a. Rigor

True - A critical review of the literature is necessary in nearly all research projects. It helps researchers understand the existing knowledge and gaps in the field, identify relevant theories and methodologies, and build upon previous studies.

True - Objectivity and parsimony are both related to the rigor of an investigation. Objectivity refers to the impartiality and lack of bias in conducting and interpreting the research, while parsimony refers to the principle of simplicity in explaining phenomena or choosing the most straightforward explanation. Both objectivity and parsimony contribute to the rigor of a scientific investigation.

a. Rigor - Scientific investigation is characterized by a good theoretical base and a sound methodological design. These characteristics are both related to the rigor of the investigation. Rigor refers to the thoroughness, precision, and reliability of the research process, including the theoretical underpinnings and the robustness of the methods employed.

To know more about Scientific investigation follow the link:

https://brainly.com/question/12877465

#SPJ4

The correct question is:

1. A critical review of the literature is necessary in nearly all research projects.

True

False

2. Objectivity and parsimony are both related to the rigor of an investigation?

True

False

3. Scientific investigation is characterized by a good theoretical base and a sound methodological design. These characteristics are both related to the of the investigation What must be filled on the line?

a. Rigor

b. Precision and confidence.

c. Objectivity

d. Parsimony..

Hope this helps!

>Rijja<

Answer:

Red blood cells, root hair cells in plants

Explanation:

Red blood cell: it has no nucleus. It offers the cell to carry more hemoglobin

Root hair cells in plants: they have a large cytoplasm which enables them to take water from the soil.

B) False. The skin is actually a very important system in the human body.

It is the largest organ and provides a protective barrier against external factors such as harmful UV radiation, pollutants, and pathogens. It also plays a crucial role in regulating body temperature through sweating and shivering. Furthermore, the skin has sensory receptors that allow us to feel touch, pressure, heat, and cold. This allows us to interact with our environment and avoid potential dangers. The skin also has an important role in vitamin D synthesis which is important for bone health.

In addition to its physical functions, the skin also has social and psychological significance. It is often viewed as a reflection of health and beauty and can impact self-esteem and confidence. Overall, the skin is an incredibly important system in the human body and plays multiple vital roles in maintaining overall health and well-being.

Learn more about organ here: https://brainly.com/question/2316084

#SPJ11

The statement that accurately describes the thymus is that it is a location for processing and maturation of t-lymphocytes. Option B .

The thymus is a glandular organ that is located in the mediastinum, just above the heart. It is a critical part of the immune system as it is the primary site for the development and maturation of T lymphocytes or T cells, which play a key role in cell-mediated immunity. The thymus is largest in size during early childhood and starts to shrink after puberty, gradually being replaced by adipose tissue. The thymus has no connection to the laryngeal space and does not respond to foreign substances like lymph nodes do.

Learn more about t-lymphocytes.

https://brainly.com/question/12324561

#SPJ4

Full Question ;

The thymus has none of these properties. O is located in the superior laryngeal space. O is a site for lymphocyte response to foreign substances. is a location for processing and maturation of t-lymphocytes. O increases in size after puberty.

True. Irrigation is especially important in southwestern home landscapes and gardens because annual rainfall is low.

Irrigation mitigates the effects of low rainfall and boosts output by preserving soil and water balance. Surface water and groundwater resources are used for irrigation purposes. Several irrigation methods are used to supply water to cultivated land.

Irrigation helps plants grow better with a supply of water according to the plant's needs. Ultimately, it helps economic development. Irrigation water promotes soil moisture, increases plant fibre water content, and degrades nutrients for plant use.

In areas of low or seasonal rainfall, agriculture could not be sustained without irrigation. In areas with irregular rainfall, irrigation improves crop growth and quality. By enabling farmers to grow crops on a consistent schedule, irrigation also ensures a more reliable food supply.

For more information on Irrigation , visit :

https://brainly.com/question/29232932

#SPJ4

Calculate observed allele frequencies, Hardy-Weinberg expected genotype frequencies, Chi-square test statistic, and critical value with degree of freedom.

The Hardy-Weinberg principle, also known as the Hardy-Weinberg equilibrium or law, is a fundamental concept in population genetics that describes the relationship between the frequencies of alleles and genotypes in a population that is not evolving. The mathematical equation that describes the Hardy-Weinberg principle is:

p² + 2pq + q² = 1

where p and q are the frequencies of the two alleles in the population, and p², 2pq, and q² represent the frequencies of the three possible genotypes (homozygous dominant, heterozygous, and homozygous recessive, respectively).

The Hardy-Weinberg principle is a useful tool for understanding the genetic structure of populations and for predicting the outcomes of genetic crosses. It also provides a baseline against which to measure the effects of evolutionary forces such as mutation, selection, and drift.

1.) Collect sample of butterflies and count the number in each phenotypic class

2.) Divide the number of individuals in each phenotypic class by the total number of individuals in the sample to arrive at relative genotype frequencies. use the given values to calculate observed allele frequencies.

3.) Now calculate Hardy-Weinberg expected genotype frequencies

4.) Subtract the predicted number from the observed number for each genotypic class, square the result, and then divide the squared result by the expected number for that class. When we sum up these values over all three genotypic classes.

5.) compare the Chi-square test statistic to the critical value with  degree of freedom equates to 1.

To know more about mutation, visit:

brainly.com/question/17130462

#SPJ1

Answer:

hmmmmmmmmmmmnnmmmmmmmmmmm mmmmm

The given statement "Patients with kidney failure experience systemic edema as a result of increased solutes in the blood. higher levels of plasma proteins drive fluid from the blood to the tissues" is True because normally, the kidneys filter excess fluid and waste from the blood, but when they fail, these substances accumulate in the blood, causing an increase in osmotic pressure.

This results in the movement of fluid from the tissues into the blood, leading to edema. Furthermore, higher levels of plasma proteins also contribute to the development of edema. Plasma proteins help to maintain the balance of fluid between the blood and tissues.

In conditions such as kidney failure, where there is an increase in solutes in the blood, the concentration of plasma proteins may also increase. This increased concentration of plasma proteins drives fluid from the blood to the tissues, leading to edema.

Therefore, patients with kidney failure often experience systemic edema as a result of both increased solutes in the blood and higher levels of plasma proteins driving fluid from the blood to the tissues.

You can learn more about plasma proteins at: brainly.com/question/3521892

#SPJ11

The lungfish lineage is a very ancient one. This is evident from the placement of the lungfish on the tree of life, which is relatively close to the root of the tree.

The lungfish lineage has been around for hundreds of millions of years, and has survived multiple extinction events.
We can also conclude that the lungfish lineage is unique, as it has certain traits that are not found in other fish species.

For example, lungfish are able to breathe air, which is an adaptation that has allowed them to survive in low-oxygen environments. Additionally, lungfish are also able to survive in very dry conditions by burrowing into the mud and hibernating until conditions improve.

We could also discuss the evolutionary history of lungfish, and how they have changed over time to adapt to new environments. We could also discuss the role of lungfish in the ecosystem, and how they contribute to the food chain. Overall, there is a lot to be learned about the lungfish lineage based on this tree.

The lungfish lineage is an ancient and unique group of fish that has survived for hundreds of millions of years. Their ability to breathe air and survive in dry conditions makes them an important part of many ecosystems, and studying their evolutionary history can tell us a lot about the history of life on Earth.

For more information on lungfish kindly visit to

https://brainly.com/question/15268736

#SPJ11

Answer:

the disorder that muscles weaken, axiety and depression is hypothyrodism.

Explanation:

Answer: 1. CCGTAAGCGCTAGTAC

2.GCAATCGTACGAAGTA

3. TGATTGCCATCGATCG

Explanation: you just flip the letters with their corresponding ones

Yet, animals are not the only source of agricultural methane. Another 8% of emissions attributed to humans come from paddy rice production, in which flooded fields prevent oxygen from accessing the soil, creating ideal circumstances for bacteria that produce methane.

Ground-level ozone is a dangerous air pollutant and a greenhouse gas that causes 1 million premature deaths annually and is primarily formed by methane. Another potent greenhouse gas is methane. It is 80 times more effective at warming over a 20-year period than carbon dioxide. From the beginning of the industrial period, methane has contributed around 30% to global warming, and it is now increasing at a rate unheard of since records were kept in the 1980s. This entails utilising modern technology, changing to a diet high in plants, and accepting non-traditional protein sources. According to Lomax, this is crucial if humans are to reduce greenhouse gas emissions and achieve the Paris Climate Agreement's goal of keeping global warming to 1.5°C.

To know more about greenhouse gas click here:

brainly.com/question/4509458

#SPJ4

Answer:

THE ANSWER BELOW and i really hope this is the answer your looking for if not  i am sorry

Explanation:

A. Brain - Organ level

B. Neurons - Cellular level

C. Neurotransmitters - Chemical level

D. Neurons and neuroglial cells - Tissue level

E . Brain combined with the spinal cord and spinal nerves - Organ System level

There are five levels of organisation of life; cell, tissue, organ, system and organism.

The smallest unit is cell. Neurons are nerve cells.

Aggregation of cells forms a tissue. Neurons and neuroglial cells aggregate to form nervous tissues and are hence at tissue level.

Aggregation of tissues forms an organ. Brain is an example of organ. It is formed from aggregation of nervous tissues.

Tissues aggregate to form organs while aggregation of organs constitute a system. The nervous system consist of brain combined with spinal cord and spinal nerves.

The nervous system release chemicals called neurotransmitters.

Using the anatomical levels of organization some components related to the brain for that layer are:

1) Chemical level: Neurotransmitters

Neurotransmitters are small molecules that function in the body, specifically in the brain as a transport medium for the transmission of chemical signals.

2) Cellular level: Neurons or nerve cells

The nerve cell or also called neuron, is known to be the fundamental units of the brain and the nervous system, which is why it is in charge of establishing connections with other neurons.

3) Tissue level: Nervous tissue

Neurons and glial cells make up nerve tissue.

The distribution of neurons determines the existence of two main forms of nervous tissue: the white matter and the gray matter.

When examining a brain, it is appreciated that the gray matter is constituting an envelope of about 5 mm thick, the cerebral cortex.

4) Organ level: Brain

The brain can be defined as a complex organ, located within the skull, that manages the activity of the nervous system.

5) Organ system: central nervous system.

The nervous system is called the set of organs (the brain and the spinal cord) that has three basic functions: the sensitive, the integrative and the motor.

The central nervous system is "neurally" connected to almost every corner of the rest of the body by nerves, which together constitute the peripheral nervous system.

6) Organism

All the brain structures that compose it make it capable of processing sensory information while coordinating and maintaining the vital functions of the organism.

Therefore, we can conclude the brain consists of different types of tissues and cells, which are organized from the chemical level to a more complex one to systematize the vital functions of the organism.

Learn more here: https://brainly.com/question/16044924