Answer:
D)nucleic acid
Explanation:
RNA is the acronym for ribonucleic acid.
Answer: D. Nucleic Acid
Explanation: RNA is riboNUCLIEC acid.
Hope this helps!
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2
Directions: Select ALL the correct answers.
All living things contain carbon. Which of the following statements are true about carbon atoms?
A single molecule of some compounds can contain thousands of carbon atoms.
Each carbon atom can form single bonds with up to four other carbon atoms.
Carbon atoms can join together to form chains or rings.
Each carbon atom can form double bonds with up to two other carbon atoms.
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Answer:B, C and D
Explanation:
A single molecule of some compounds can contain thousands of carbon atoms. Each carbon atom can form single bonds with up to four other carbon atoms. Thus, all of the given statements are true.
What are the properties of carbon atom?Carbon is found in almost all the biomolecules and majority of compounds present in the atmosphere. All the living things contain carbon in the form of different biomolecules. A single molecule of some compounds can contain up to thousands of carbon atoms including polymers which make up the cell wall and cell membrane.
Each carbon atom can form single bonds with up to four other carbon atoms. This is due to the valency of carbon which is four, thus it can form covalent bonds with other atoms or elements. This property of Carbon is known as tetravalency. Carbon has the ability to form long chains when it gets linked with other carbon atoms.
Each carbon atom can form double bonds with up to two other carbon atoms or more.
Therefore, all these statements are true.
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a pie chart is used when
a. comparing quantities between different groups
b. showing change over time
c. comparing quantity totals
d. comparing parts of a whole quantity
Answer:
c. comparing quantity totals
Answer:
c. comparing quantity totals
Explanation:
A track team captain thinks that eating breakfast and having a good night's sleep may affect the team's performance.
The track team decides to test if eating breakfast makes a difference in how fast they can run one mile.
They decide to split the team into two groups. One group eats breakfast two hours before running and the other group does not eat breakfast. The students also make a rule that both groups have to get a good night's sleep before they run. Is this rule necessary?
A. Yes, because the rule allows the team to only test one variable at a time, keeping everything else a constant.
B. No, because they can judge the effect of having breakfast even if the students do not get enough sleep.
C. No, because they can judge the effect of having breakfast only if some students do not get enough sleep.
D. Yes, because they can judge the effect of both breakfast and sleep if all students get enough sleep.
Answer:
I'm pretty sure the answer is A
Organisms may contain up to five levels of organization within their bodies. Which level of organization is best represented by the liver?
tissue
organ
organism
organ system
Answer:
I cann confirm, I just finished the test and the answer is tissue!
The level of organization is best represented by the liver is tissue. The correct option is a.
What is a tissue?In biology, tissue is described as a collection of cells that share a common structure and serve a single purpose. French is where the word "tissue," which means "to weave," comes from.
Tissue is a collection of cells with a common structure and function that work as a single unit. The body's tissues give it shape and aid in energy storage and heat retention. Connective tissue, epithelial tissue, muscle tissue, and nervous tissue are the four different types of tissues.
The hierarchy of intricate biological systems and structures that, in a reductionistic manner, define life is known as biological organization. The conventional hierarchy goes from atoms to biospheres, as shown in the details below.
Therefore, the correct option is a. tissue.
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What countries does the Nile River flow through?
Answer:
Burundi, Tanzania, Rwanda, DROC, Sudan
Increased sea surface temperature has the potential to kill vast areas of coral because of this phenomenon:
A.) invasive species
B.) coral bleaching
C.) ocean acidification
D.) oligotrophic
Answer:
B.) Coral Bleaching
Explanation:
Increased temperatures can cause coral to 'bleach' or lose their symbiotic zooxanthellae algae
Increased sea surface temperature has the potential to kill vast areas of coral because of the coral bleaching.
What do you mean by coral bleaching?Bleached coral Healthy coral Coral bleaching is the process when corals become white due to various stressors, such as changes in temperature, light, or nutrients.
When water is too warm, corals will expel the algae (zooxanthellae) living in their tissues causing the coral to turn completely white. This is called coral bleaching. When a coral bleaches, it is not dead.
Coral bleaching can be caused by a wide range of environmental stressors such as pollution, oil spills, increased sedimentation, extremes in sea temperatures, extremes in salinity, low oxygen, disease, and predation.
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Structure that organizes motion of the chromosomes?
Answer:
Structure that organizes motion of chromosomes. Cytoplasm. Material in cell; contains chemical wealth: sugars, amino acids, and proteins a cell uses to carry out everyday activites. Vacuole. Saclike structure (large in animal cell); stores water, salts, carbs, and proteins. Plays a role in disposing waste.
Explanation:
There are various structures that are found present in a cell. And these structures have peculiar functions they carry out in the cell. Chromosomes are found in the nucleus of a cell. During cell division there is the needed movement of the chromosomes.
The structure that organizes motion of the chromosomes is the centriole
The centriole is a structure found in the animal cells near the nucleus that aid in the movement of chromosomes through the action of the microtubule and spindle fibres. They help to assemble these microtubules and spindle fibres to aid movement of chromosomes.Learn more: https://brainly.com/question/24552946
how is the igneous rock formed
Answer:
Igneous rocks are formed when magma solidifies and cools down.
What could create the need for a secondary succession?
i need the answer
Answer:
Particularly common types of secondary succession include responses to natural disturbances such as fire, flood, and severe winds, and to human-caused disturbances such as logging and agriculture. In secondary succession, the soils and organisms need to be left unharmed so there is a way for the new material to rebuild.
Answer:
Because you never wait.
Explanation:
Because this is correct.
You are cleaning your room, when all of a sudden the smoke alarm goes off. You go into the kitchen and it is very smoky, so you inhale smoke. Your body has to immediately get rid of the carbon molecules you just inhaled. Explain all the parts of the cell involved in getting the smoke out of your cells.
Answer: The smoke goes to the cells of the mouth or buccal cavity, nasal cavity, trachea, larynx, and then finally distributed into the bronchi (small tubes) in the lungs.
Explanation:
Respiratory system can be defined as the complex system of organs that allow us to obtain oxygen for biochemical oxidation of food and releasing energy in the form of ATP. The breathing is a process in which the air is inhaled inside the respiratory system and oxygen is absorbed by the cells and carbon dioxide is expelled out of the body. The pathway of oxygen is cells of the mouth or buccal cavity, nasal cavity, trachea, larynx, and then finally, distributed into the bronchi (small tubes) in the lungs and it is reverse for carbon dioxide or carbon monoxide gas components present in the smoke. The red blood cells are the cells that are involved in getting rid of smoke out of the body, as they have hemoglobin which has binding efficiency with both oxygen and carbon dioxide. The exchange of deoxygenated blood (carbon dioxide containing blood) takes place in the blood capillaries. From the blood capillaries the carbon dioxide is expelled out from the bronchi following the entire route of expiration.
28. Which of the following is most likely to cause the greatest disruption to an ecosystem?
Answer:
Emptying an aquarium containing non-native species into a local waterway will most likely to cause the greatest disruption to an ecosystem. A non-native species can be invasive and may disturb the already living native species in the waterway.
Explanation:
Answer:
Emptying an aquarium containing non-native species into a local waterway
Explanation:
Why are tapeworms parasites to brine shrimps?
Answer: The tissue of brine shrimp turns red after it is infected with parasitic tapeworms. This color is caused by an increase in carotenoids, a type of pigmented chemical
Explanation:
Give reason diffrent types of plant are available in riverside, lakeside
Answer:
because it contain moist environment or land filled with different minerals. Such type of climate is favourable for mostly all kinds of plants.
Different types of plant are available in riverside, lakeside because of the
presence of nutrients and resources in them.
Plants are regarded as primary producers which produce their food through
the process of photosynthesis. Photosynthesis involves reaction between
carbondioxide and water to form glucose.
The availability of water favors photosynthetic processes which is why plants are present in such areas to increase food production.
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The 6 kingdom system of classification enables biologists to group organisms according to
Answer:
The correct answer is -a common characteristic (in a logical manner)
Explanation:
The six kingdom classification is given by Woese et al 1977, the basis of this classification was the shared characteristic of organisms. These common characteristics include more than one character such as cell type ( prokaryotic or eukaryotic), type of nutrients (autotrophs, heterotrophs), type of reproduction, homologous or analogous organs, habitat, and many more.
All these traits or characters helped in grouping organisms in a logical manner and is one of the most acceptable classifications.
Thus, the correct answer is -a common characteristic (in a logical manner)
Which organism would be the best subject for a study of both photosynthesis and cellular respiration?
a green plant
a chemosynthetic bacterium
an animal that eats plants
an animal that eats animals
Answer:
A green plant
Explanation:
List three ways you can reduce water pollution.
Answer: One way to reduce water pollution is to not pour any harmful chemicals down your sink. Also avoid plastic, this can be very harmful! The last way that I will state is to help clean up beaches and/or lakes. When you help clean up it will lessen the chances of trash slipping back into the water.
To compare how different types of soil absorbed water, Christian set up an
experiment. He poked equal numbers and sizes of holes into the bottoms of three
plastic cups. He filled one cup with sand, one with potting soil, and left one empty. He
placed each cup in a stand over a beaker. Christian poured 400 mL (milliliters) of water
into each of the cups. He then measured the amount of water collected in the beakers
beneath each cup at 1 minute intervals for 3 minutes.
What is the control in this experiment?
the amount of water collagted in the boaker
collastad
the cup with the sand
the empty cup
Rt the cup with the soil
Answer:
the empty cup
Explanation:
because just trust me
What is the purpose of cellular respiration?
A To get rid of carbon dioxide
B To get take in oxygen
To take in sugar
D) To convert food to energy
Answer:
To convert food to energy
Explanation:
please come in comment
What are sources of nitrogen in the environment ?
Answer:
Atmospheric precipitation, livestock and poultry operations and urban wastes.
Explanation:
where in the chloroplasts is the chlorophyll located; thylakoid/grana or stroma?
it is located in the thylakoid
poriferons are called sessils because
Answer:
Poriferans are sessilebecause they donot move from one place to another. They are fixed in a single place.
Explanation:
The meaning of sessile is fixed in one place or immobile. As poriferans donot move from one place to another. They are called sessile.
State the aim of the investigation.
Answer:
It is confusing so here: An aim identifies the purpose of the investigation. It is a straightforward expression of what the researcher is trying to find out from conducting an investigation.
Explanation:
predation in your own words!!
Answer:
Its an interaction where one organism, the predator, kills and eats another organism, its prey
Explanation:
What role does cellular respiration play in the carbon cycle?
It removes CO2 from the atmosphere during glycolysis.
It removes CO2 from the atmosphere during the citric acid cycle.
It releases CO2 to the atmosphere during acetyl CoA formation.
lt releases CO2 to the atmosphere during electron transport.
It releases carbon dioxide into the environment during acetyl COA formation
Answer:
c
Explanation:
which of the following helps an endurance athlete store glycogen
Answer:
Where's the following, is there suppose to be an attachment?
Explanation:
??????
What is the boundary that
separates a cell from the inside and outside environment?
Answer:
plasma membrane
The plasma membrane (often called the cell membrane) is a thin flexible barrier that separates the inside of the cell from the environment outside the cell and regulates what can pass in and out of the cell. Internally, the cell is divided into the cytoplasm and the nucleus.
Explanation:
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Which of these factors best explains why liquid water exists on Earth?
A. Presence of living things
B. Moderate temperatures
C. Lack of gravity
D. Lunar tides
The factor that best explains why liquid water exists on Earth is moderate temperatures. Therefore option B is correct.
Liquid water exists on Earth primarily due to the presence of moderate temperatures. Water is a unique substance because it has a relatively high boiling point and a wide range of temperatures at which it remains in a liquid state.
The average surface temperature of the Earth, along with the atmospheric pressure, allows water to exist as a liquid under normal conditions.
The lack of gravity is incorrect because gravity is essential for the existence of liquid water. Gravity keeps water molecules attracted to each other, preventing them from dispersing into the atmosphere.
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true or false: 1. T F Cities are usually colder than their surrounding regions. 2. T F Climate has no effect on the formation of soil. 2.T F Mangroves are a keystone species. 3. T F The brackish water of estuaries does not support a diversity of marine life. 4. T F Large browsing animals are abundant in chaparral. (O
Answer:true
It is true
Explanation:
Answer:
Yup it's True!
Explanation:
The lab setup shows four test tubes. Tube 1 contains water only. Tube 2 contains a live snail. Tube 3 contains a live green water plant. Tube 4 contains both a live green water plant and a live snail.
In this setup, which tubes contain at least one organism carrying on cellular respiration?
A) Tubes 1 and 2 only.
B) Tubes 2 and 4 only.
C) Tubes 3 and 4 only.
D) Tubes 2, 3, and 4 only.
Answer:
D
Explanation:
Read this sentence from "The Man in the Arena".
"There is little use for the being whose tepid soul knows nothing of, great and generous emotion, of the high pride, the stern belief, the lofty enthusiasm, of the men who quell the storm and ride the thunder."
How does the sentence develop Roosevelt's claim?
A.
It dismantles the power that the critics attempt to hold over those who are in the arena.
B.
It belittles the critics and the doers for their tepid souls.
C.
It supports the unification of the critics and the doers.
D.
It empowers the critics to keep their antics going and discourage the doers of good deeds.
It dismantles the power that the critics attempt to hold over those who are in the arena.
The answer is option A.
What is the man on the court saying?My favorite quote, as well as LeBron James' favorite, quotes "Man in the Arena" from Teddy Roosevelt. It goes like this: He’s not a public critic; not someone who points out how a powerful person stumbles, or where the perpetrator could have done better.
What is the meaning of the man in the arena?A person who is deeply involved in a situation that requires courage, skill, or stamina, unlike someone who sits on the sidelines and watches, is often referred to as a "field man".
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