Answer:
C. blood, cell interior, digestive fluid
Explanation:
least acidic is 7.3 and most acidic is 2
Answer:
Blood, cell interior, digestive fluid
Explanation:
The lower the number the more acidic the substance. The question asks least acidic (highest number) to most acidic (lowest number), so we need to list these from the highest pH to the lowest pH. That means blood (7.3), then cell interior (6.8), and finally digestive fluid (2).
The pointy, inferior part of the heart is the ____ while the _____ is much broader with multiple blood vessels entering and exiting from the region.
A. Base; apex.
B. Apex; base
C. Auricle; septum
D. Septum; auricle
The pointy, inferior part of the heart is the _apex___ while the __base___ is much broader with multiple blood vessels entering and exiting from the region.
Cytochrome C is a protein that functions in cellular respiration as part of the electron transport chain. It is frequently used to determine evolutionary relationships between different organisms because it is highly conserved (only differs slightly) between different organisms. A student researching evolutionary relationships between different organisms performed an ELISA test to analyze differences between cytochrome C proteins in different organisms. What is the independent variable in this experiment?a) the organismb) the darkness of color resulting from the ELISA testc) the antibody used in the ELISA testd) the protein being compared (cytochrome C)
Answer:
A) the organism
Explanation:
In an experiment, the independent variable is the variable that the experimenter changes or manipulates in the experiment in order to bring about a measurable response.
In this question involving the a student researching evolutionary relationships between different organisms who performed an ELISA test to analyze differences between cytochrome C proteins in different organisms. The DIFFERENT ORGANISMS used by the student is the independent variable because it is what the student changes in order to check out the difference in their cytochrome C proteins
Each organism in a food pyramid uses a given amount of energy to live, explain how this energy and the cycling of matter is used and how it is important for the individual organism. In your explanation, describe one of the
Answer:
Living beings have the ability to exchange matter and energy with the environment that surrounds them. They take from the environment the nutritional substances and the energy they need to live and expel the waste substances into the environment the following processes:
What are the two major threats to African elephant populations?
Answer:
Elephants are sometimes killed in retaliation. With human populations continuing to grow across their range, habitat loss and degradation - and conflict with communities - will remain major threats to elephants' survival.
Which of the following particles always has a positive charge?
A. Neutron
B. Ion
C. Proton
D. Electron
Answer:
proton
Explanation:
proton +
electron -
neutron no charge
Blood cells have a rigid cell wall?
Answer:
No the cell wall is only found in plants
Explanation:
how is DNA of human and bacteria different ? can u please explain it ?
Which properties are characteristics of nonmetals? Check all that apply.
malleable
brittle
solid at room temperature
low density
O electrical insulator
thermal conductor
The properties of nonmetals include brittleness, being solid at room temperature, low density, electrical insulating ability, and being poor thermal conductors.
Nonmetals possess certain distinct properties. Let's examine each option to determine which ones apply.
Malleable: This property refers to the ability of a material to be hammered or pressed into different shapes without breaking. Nonmetals are generally brittle, meaning they are not malleable. Therefore, this property does not apply.Brittle: Nonmetals are known for their brittleness. They tend to fracture or break when subjected to stress, making this property characteristic of nonmetals.Solid at room temperature: While some nonmetals can exist in the gaseous or liquid state at room temperature, many nonmetals are indeed solid. Therefore, this property applies.Low density: Nonmetals typically have lower densities compared to metals. This property is commonly associated with nonmetals, making it applicable.Electrical insulator: Nonmetals are poor conductors of electricity, and they can act as insulators. This property applies to nonmetals.Thermal conductor: Nonmetals generally have low thermal conductivity, meaning they do not conduct heat effectively. Therefore, nonmetals are not good thermal conductors. This property does not apply.In summary, the properties characteristic of nonmetals include being brittle, solid at room temperature, low density, and acting as electrical insulators
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Which layer would have the oldest fossils? How do you know?
Water is made up of three atoms of two elements, Two hydrogen, and one Oxygen. Which of the following is true of this compound?
a. The Oxygen in water is larger and as a result controls the Hydrogen
b. The Hydrogen in water is weaker and as a result is slightly positive
c. The Oxygen region of water is perfectly neutral with no charge
d. The Oxygen and Hydrogen are both negatively charged
PLEASE HELP! THIS IS DUE IN THE NEXT 10 MINUTES! - Dave is working with a compound microscope. What lenses and knobs combination does he need to use to find the specimen on the slide?
Answer:
Why do you need to start with 4x in magnification on a microscope? The 4x objective lens has the lowest power and, therefore the highest field of view. As a result, it is easier to locate the specimen on the slide than if you start with a higher power objective
Explanation:
It seems plausible that planets and moons with liquid water could support microbial life, even though CO2 is the only available carbon compound and they have negligible oxygen in their atmospheres. Suppose that known bacterial species were being considered for an unmanned probe that would deliver bacteria to one of these planets in order to colonize it. What basic metabolic capabilities should a bacterial species have in order to give it the best chance of successful colonization
Answer:
The metabolic capacities should be:
Bacteria that fulfill replicative cycles, have a metabolization that requires a substrate or a metabolite, coexist in extreme environments where their method of survival is sporulation.
Ability to admit genetic mutations between different bacterial colonies for their possible evolution, an ideal environment with pH, gases, and substrates according to the life of the bacterial colony, which is often called as a culture medium.
Explanation:
Temperature is essential in bacterial growth, as is the pressure and environment that surrounds the bacteria.
Something that must be taken into account is that other microorganisms coexist with the bacteria in the medium, since they can be limited to their colonization, an example of this is the gram negative and positive bacteria, coccoid and bacilloid, which generally are not compatible with the penicillium fungus, as this, as a product of its metabolization, releases a substance called penicillin that prevents the colonizing growth of other species of microorganisms such as this type of bacteria.
Chickpeas are the third largest legume crop in the world and one of the eight founder crops of agriculture. Chickpea flower color is a useful morphological marker of different strains of chickpea. Of the world collections of chickpeas, 80% produce pink flowers, 19% produce white flowers and 1% produce blue flowers. Two pure-breeding strains of chickpea, Strain A (white flowers) and Strain B (blue flowers) were crossed and the F1 were all pink. The F2 generation (from an F1 X F1) produced: 141 Pink flowers plants 40 Blue flower plants 66 White flower plants A. Explain these results if a single gene is responsible for determining flower color in chickpeas. Give your answer by assigning genotypes, phenotypes and ratios. B. Explain these results if two genes are responsible for determining flower color in chickpeas. Give your answer by assigning genotypes, phenotypes and ratios. C. How would you test which hypothesis (one gene or two genes) is the most likely hypothesis
Answer and Explanation:
a. The enes are responsible for expressing the characteristics of an individual. However, genes responsible for the same trait have different alleles, which make these traits different from each other, as is the case with chickpea flowers. Alleles can be h0m0zygous dominant (AA), recessive h0m0zygous (aa) or heterozygous (Aa), in short, dominant alleles are expressed in capital letters and are always expressed by the organism, so the alleles with greater proportions within an intersection, since they can be expressed in h0m0zygous and heterozygosis. Recessive alleles, however, can only be expressed in h0m0zygous and therefore have a smaller proportion.
B. Chickpeas have a type of dominance called incomplete dominance. This type of dominance occurs when the dominant alleles (AA) do not suppress the expression of the recessive genotype (aa), but joins the one showing an intermediate phenotype to the phenotype of the two alleles. This recessive phenotype can be seen in the heterozygous allele (Aa). Thus, we can see that the dominant flowers have AA alleles and have a white phenotype, while recessive flowers have aa alleles and have a blue phenotype, as explained in the question above. The crossing between these two plants generates an offspring where all the flowers present the pink phenotype, which is the intermediate phenotype between blue and white, in addition, this crossing generated an offspring that presents the Aa phenotype. You can also see this variety of colors at the crossing of the F2 generation, where most plants have the intermediate phenotype (Aa), followed by the dominant phenotype (AA) and followed by the recessive phenotype (aa). All crossings can be seen in attachments.
c. To test the hypothesis of one or more genes responsible for these characteristics, we would have to do biochemical and molecular tests. For that, it would be necessary to make a DNA extraction from the plant, PCR reactions and the isolation of one or more genes related to the color of the flowers.
Answer:
cool d*ck
Explanation:
Read the excerpt from chapter 2 of Night.In this excerpt, the author shows how terrible conditions can cause people to be unsympathetic to the pain of others. How does the memoir genre enable the author to achieve this purpose?
He is able to include facts to support his story.
He is able to remain objective about what is happening.
He is able to share his observations about one event in depth.
He is able to provide an in-depth look about why the woman is shouting.
Answer: B
Explanation: I’m pretty sure
Answer:
b
Explanation:
it make the most sense if you look at it .
what is the name of the waxy coating that keeps plants from drying out?
A.chloroplast
B.cuticle
C.pholem
D.xylem
I NEED THIS ASAP
Answer:
the answer is b, cuticle. hope this helps!
Answer:
The answer is Cuticle.
Explanation:
The waxy covering on plant leaves, young stems, and fruit is called the "cuticle". It is composed of cutin, a wax-like material produced by the plant that is chemically a hydroxy fatty acid. The purpose of this covering is to help the plant retain water. Hope this helps!
Help Me Question 6 The layers of Earth are the crust, mantle, and core, with the core being divided into inner and outer layers. Which of the following does NOT describe the layers of the solid Earth? The core makes up the majority of Earth's volume. The mantle is composed of rocks known as silicates. The core is made up of dense elements, such as iron and nickel. The crust is extremely thin when compared to the core or mantle.
Answer: The core makes up the majority of Earth's volume.
Explanation:
The core does not make up most of the earth's volume. So this is the wrong statement. Hence the correct option is A.
What are the layers of the earth?The earth is an irregular solid sphere divided into four major layers. The outermost layer is the crust. After that, there is the mantle and then there is the core. The core is separated into the outer core and the inner core.
The top layer of the earth we see and live on is the crust of earth. The crust is only 40 km and thus makes the thinnest layer of the earth. The crust is of two types. First is the continental crust which is the thick land. The oceanic crust is found deep at the bottom of the ocean.
The mantle is 2890 km and is the thickest layer of the earth. It makes for 84% of the earth's volume. The mantle is divided into several layers based on their seismological properties.
The core is divided into 2 layers: the inner core which is solid and the outer core which is liquid. The inner core has a radius of 1220 km and the outer core has a radius of 3400 km.
Thus the mantle makes up the majority of the earth's volume.
Therefore the correct option is A.
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What should the scientist do to best gain scientific understanding of this topic?
Analyze the results, and change the experimental methods to retest the hypotheses in a different way.
Discard the faulty results that do not support the original hypothesis, and repeat the experiment using the same methods.
Analyze the procedural errors that took place in the experiment, and summarize these in a conclusion statement.
Repeat the experiment and adjust new data to support the original hypothesis.
Answer:
The correct answer would be - Analyze the results and change the experimental methods to retest the hypotheses in a different way.
Explanation:
In a scientific investigation or experiment, if there is an unexpected result during testing a hypothesis. A Scientist must analyze the procedure and result to find the possible explanation or errors that led to a particular result.
After analyzing and finding what must have happened scientists need to do changes in the experiment setting or method and retest the hypothesis in a different way to a better understanding of the topic.
a change in a given direction causes change in the opposite direction.
a) positive feedback
b) both
c) negative feedback
Answer:
Negative Feedback
Explanation:
Negative feedback is a stimulus that cause the system to move in the opposite direction of what has happening. For example if your are cold, you will shiver in order to create heat that will cause your body temperature to increase. But if you are hot you will sweat which will cause your body temperature to decrease.
Elements such as silicon, mercury, arsenic, tellerium cannot be classified as metals or non metals. We call them...
Answer:
metaloids
Explanation:
metaloids an element whose properties are intermediate between those of metals and solid non metals.
Are the Vitruvious' Theories Correct?
Answer:
Yes, but the results can vary depending on personal features
Explanation:
Vitruvius was a Roman architect with great talent. However, he is most known for his viewpoints and theories on the mysteries of the human body. ... Overall, based on the results from the experiment, it can be concluded that Vitruvius' theory can vary by personal features and measurement.
As a part of the nitrogen cycle, fish contribute nitrogen to their environment by doing which of the following?
Producing waste
Eating plants
Drinking water
Breathing air
Fish contribute nitrogen to their environment by eating plants, the nitrogen cycle in a pond starts and ends with the fish, hence option B is correct.
How are different organisms involved during the nitrogen cycle?Fish produce waste after eating either plants or fish food. It's ammonia in this garbage. An organism's decomposition is another source of ammonia.
Ammonia is converted into nitrite in the first step. Food and waste that enters the tank and decompose emit ammonia, also known as hydrogen nitride, into the system.
Fish and corals are extremely poisonous to ammonia. All living things just take in these molecules through eating and use them in their own bodies.
Therefore, animals that pass away also add to the nitrogen cycle. Decomposed nitrogen-rich chemicals from animal corpses are returned to the soil for recycling and reusing.
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What structure is only found in animal cells
Answer:
Centrosomes and Lysosomes
Explanation:
Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, and other specialized plastids, and a large central vacuole, whereas animal cells do not.
Helppp ASAP please, 10 points and a brainy
Answer:
1
Explanation:
Answer:denfarction
Explanation:
which is a product of the Krebs cycle
A. ADP
B. NADH
C. pyruvate
D. glucose
Answer:
B. NADH
Explanation:
For one cycle, two molecules of carbon, three molecules of NADH, one molecule of FADH2 and one molecule of ATP or GTP are produced.
Which phase of meiosis I is responsible for dividing the cytoplasm?
prophase I
metaphase I
anaphase I
telophase I
Answer:
The answer is telophase.
Explanation:
The correct answer is Telophase I
Coal, a fossil fuel and a sedimentary rock is formed from the remains of living organisms. It is classified as which of the following?
a) organic
b) chemical
c) clastic
d) intrusive
Answer:
A) Organic
Explanation:
Since coal is made up of the remains of living organisms, this makes it organic since the substances that make up it were/are organic.
A cell that is 30% water is in a solution in a beaker that is 30 % salt. Is the cell hypertonic,
Hypotonic or Isotonic to the solution?
Which structure is found only in plant cells and functions in the process of photosynthesis?
W
x
Υ
Z
Answer:
Chloroplasts are specialized organelles found only in plants and some types of algae. These organelles carry out the process of photosynthesis, which turns water, carbon dioxide, and light energy into nutrients from which the plant can obtain energy. There can be over one hundred chloroplasts in certain plant cells.
Answer:
I say the answer is X because if you haven't notice that you can only find that in a plant cell if you look at a human or a animal cell you wouldn't find that
sorry i'm so late on this question.
how do glass frog adapt to the climate
Answer:
The glass frogs adaptations help them survive. One detail is that it can camouflage. Its like glass you can see through and it can blend in with the leaves. They lay eggs in the leaves to survive.
Answer:
The glass frogs adaptations help them survive. One detail is that it can camouflage. Its like glass you can see through and it can blend in with the leaves.
Help!!! I need the answer really quick
Answer:
It's probably the carbon cycle
Explanation:
