mutation-nomenclature
probably for sure
Which statement is true of the genetic material in viruses
It can be DNA or RNA.
Hope this helps!
-Payshence
It can be DNA or RNA.
which of the following is a correct statement about the events of the cell cycle
Well,the cell cycle is the enrichment of blood and filtration
Another term for geographic distribution is...
Answer: Range
Explanation:
Geographical distribution is where living organisms are situated/located somewhere on the planet earth. All the organisms are situated according to their environment
It is the natural arrangement of various forms of animals and plants in the different regions and localities of the earth
There are different types of geographical distribution (some examples are given below for a better understanding)
a. population's geographic distribution
b. geographic distribution of federal government
What is necessary for reactants to combine chemically?
release of energy
input of energy
must satisfy a reversible reaction
equilibrium
Answer: Input of energy
Explanation:
The necessary reactant for a chemical reaction to take place is the input of energy. The reactants combine together in order to get the desired product.
This reaction cannot be carry forward without the supply of energy. This is because energy is required to start a reaction. This energy is known as the activation energy.
so, in order for any reaction to proceed there must be a proper input of energy.
what atoms are found in all carbohydrates?
Hey There,
The answer to your question is:
Carbon, Hydrogen and Oxygen
All carbohydrates (carbs) contain these three elements.
Best Of Luck,
- Kai -
Which of the following statements about mitosis are true? Select all that apply
Two genetically identical daughter cells are formed.
It consists of two divisions.
Mitosis occurs in all body cells except gametes (sex cells).
The chromosome number in the resulting cells is identical to the parent cell.
DNA replication is completed before the cell divides
Mitosis occurs in only gametes (sex cells)
The chromosome number in the resulting cells is halved.
First what is mitosis?
Mitosis is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
According to definition,
Two genetically identical daughter cells are formed. True.It consists of two divisions. False.Mitosis occurs in all body cells except gametes (sex cells). True.The chromosome number in the resulting cells is identical to the parent cell. True.DNA replication is completed before the cell divides. True.Mitosis occurs in only gametes (sex cells) . False.The chromosome number in the resulting cells is halved. False.Answer:
Option (1), (3), (4) and (5).
Explanation:
Mitosis may be defined as a type of cell division by which the cell multiply their number. The four stages of mitosis are prophase, metaphase, anaphase and telophase.
Two daughter cells are produced from the parent cell by the process of mitosis. The chromosome number remains same in the daughter cells and the cells are almost identical to the parent cell. Single division is involved in mitosis. Mitosis occurs in the somatic cells of the body and meiosis occurs in the gametic cells. The DNA replication occurs in the synthesis phase and completes before the cell division.
Thus, the correct answer is option (1), (3), (4) and (5).
What are monosaccharides made up of?
The monosaccharides is formed by just bounding of C, H and O.
ExplanationMonosaccharides are simplest molecule or unit in the carbohydrates group which united with each other to form di, tri or polysaccharide structure. As these are the simplest unit in carbohydrates, they are only formed by numbers of carbon, oxygen and hydrogen atoms. The number of atoms in the chain of monosaccharides varies with changing required compound. for example in deoxyribose, one of hydrogen is not present in its structure but present in ribose.
Gastroparesis is a condition that causes a partial paralysis of the stomach. The stomach has reduced ability to contract to move food through the digestive system. Some common symptoms of gastroparesis are abdominal pain, nausea, and feeling full after eating a small amount of food. What would be the most likely cause of this condition?
A.
damage to the mucus lining of the stomach
B.
lack of enzymes in the small intestine
C.
lack of pancreatic juices and bile
D.
damage to nerves that control the stomach
The correct answer is: D. damage to nerves that control the stomach.
The vagus nerve is a cranial nerve that controls stomach contractions and thus, the movement of the food. When the vagus nerve is damaged, the muscles of the stomach do not function properly, so gastroparesis occur. Consequently, food then moves slowly or even totally stops moving through the digestive tract.
D.
damage to nerves that control the stomach
When you are approached by an emergency vehicle sounding a siren, having at least one lighted lamp exhibiting a red or blue light you do not need to do anything, keep driving as before. a) true b) false
What is the main difference between weather and climate? A. Weather refers to temperature and precipitation, whereas climate refers to wind and ocean currents. B. Weather refers to a specific place, whereas climate refers to a global area. C. Weather refers to conditions on Earth, whereas climate refers to conditions beyond Earth. D. Weather refers to short-term conditions, whereas climate refers to long-term conditions.
D. Weather refers to short-term conditions, whereas climate refers to long-term conditions. hope this helps!
How does an atom become a positive ion?
An atom becomes a positive ion by losing one or more of its electrons. Positively charged ions are called cations.
Positively charged ions are called cations. Generally, metallic elements turn into positive ions due to the quantity of valence electrons they contain. Metallic ions can achieve a full valence shell if they lose their outer electron(s). When they lose these electrons, the inner shell is now their valence shell, and it's complete. When this happens, they will have more protons than electrons, giving the atom a positive charge.
An atom becomes a positive ion (cation) when it loses one or more electrons from its outermost energy level.
How does an atom become a positive ion?Electrons carry a negative charge, so when an atom loses electrons, it has an excess of positive charge compared to its negative charge, resulting in a net positive charge.
An atom can lose electrons through a process called electron transfer, where it interacts with another atom or molecule.
Atoms can also become positive ions by absorbing sufficient energy. This can occur through various means, such as exposure to high temperatures or intense electromagnetic radiation.
Thus, an atom becomes a positive ion known as cation, when it loses one or more electrons from its outermost energy level.
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Considering the characteristics of seagrass, you will most likely find seagrasses in which ocean zone(s)?
Sea grasses are like terrestrial plants, which produce food through photosynthesis. They are found in shallow salty waters and brackish waters from the tropic to arctic circle.
What are seagrass?Seagrasses are plants found underwater. They are alike terrestrial plants contain leaves, flowers, and roots.
They produce food by photosynthesis.
Many coastal areas have some species of seagrasses, but tropical water of Indian and Western Pacific Ocean has large population of seagrass.
Thus, seagrass are present in shallow areas, brackish water, Indian and western pacific oceans and arctic circles.
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Which property is responsible for the fact that water and oil do not mix?
Answer:
Polarity!
Explanation:
Lichens are important to an ecosystem because they
A, replace older communities
B,help form soil
C, prevent tree growth
D, become unstable
Final answer:
Lichens are essential for soil formation in ecosystems as they break down rocks and supply organic material. They are symbiotic organisms composed of a fungus and a photosynthetic partner, enabling them to thrive in extreme conditions and serve as environmental indicators.
Explanation:
Lichens are important to an ecosystem because they help form soil. These complex organisms are crucial pioneer species that settle on rock surfaces and contribute to the soil formation process by breaking down rocks and providing organic material. Lichens consist of a symbiotic relationship between a fungus and a photosynthetic partner, such as an alga or cyanobacterium. This relationship allows them to survive in harsh environments and play significant ecological roles, such as acting as indicators of air quality and providing valuable nutrients in the form of nitrogen compounds.
How do cells get energy to perform their necessary functions?
A.
Cells get energy only by taking in oxygen from the atmosphere.
B.
Cells get energy by dissolving waste products of the body.
C.
Cells get energy by moving water from one organelle to another.
D.
Cells get energy by taking in nutrients from food.
I believe the answer is D, Cells get energy by taking in nutrients from food. Correct me if I'm wrong.
Final answer:
OPTION D.
Cells acquire energy by converting nutrients from food into ATP, the cell's energy currency. While oxygen is crucial for aerobic respiration, ATP can also be produced without oxygen through processes like glycolysis.
Explanation:
Cells obtain energy to perform their necessary functions through a process called cellular respiration. This process involves converting nutrients from food into adenosine triphosphate (ATP), which cells use as a direct source of energy. Specifically, cells acquire energy from carbohydrates, fats, and proteins that they metabolize. Oxygen plays a crucial role in this process, especially during aerobic respiration, which is the most efficient form of cellular respiration. However, some organisms can also produce ATP in the absence of oxygen through processes like glycolysis.
Through photosynthesis, certain organisms convert solar energy into chemical energy, which is ultimately used to build carbohydrates. These carbohydrates are then consumed by other organisms, and the energy stored within their bonds is released and harnessed for cellular work during cellular respiration.
cells that can control the entry and exit of water oxygen and carbon dioxide in plant cells are called what?
i believe its The excess water exits through the stomata in a process called transpiration. So, stomata do not directly participate in photosynthesis. However, the stomata control the influx of carbon dioxide, a critical component of photosynthesis, and allow the excess oxygen to exit.
Classify the characteristics by whether they describe plants only, fungi only, or both plants and fungi
can absorb nutrients from the soil
have cell walls
may have rhizomes
are heterotrophic
can photosynthesize
may have aseptate hyphae
may produce seeds
Both the plants and fungi possess the tendency to absorb nutrients from the soil. Plants do that with the help of roots and fungi does that with the help of hyphae.
Both the plants and fungi possess cell walls in the form of cellulose and chitin. However, only some of the plants possess the tendency to have rhizomes like ginger, lotus, turmeric, and several kinds of ferns.
Plants are mostly autotrophs, however, certain plants like insectivorous plants depend on others for their source of nutrition, that is, and insectivorous plants are heterotrophic. On the other hand, all the fungi show the heterotrophic mode of nutrition.
Only plants possess the tendency to perform the process of photosynthesis. In fungi, due to the absence of green pigment, that is, chlorophyll, they do not possess the tendency to perform photosynthesis.
Only fungi exhibit aseptate hyphae, these structures perform various functions in fungi. They comprise the cell sap or cytoplasm, also the nuclei comprising the genetic substance. It also helps in the absorption of nutrients from the surroundings.
Mainly the seeds are produced by plants and fungi produces spores.
Final answer:
Characteristics such as absorption of nutrients from the soil and having cell walls apply to both plants and fungi, with differences in cell wall composition. Characteristics like being heterotrophic, having aseptate hyphae, and certain reproductive structures, such as seeds or rhizomes, distinguish plants from fungi with plants being able to photosynthesize and produce seeds, and fungi having aseptate hyphae and being heterotrophic.
Explanation:
To classify the characteristics by whether they describe plants only, fungi only, or both plants and fungi:
Can absorb nutrients from the soil: Both plants and fungi can absorb nutrients from the soil, though they do so in different ways.Have cell walls: Both plants and fungi have cell walls, but the composition is different. Plant cell walls are made of cellulose, whereas fungal cell walls contain chitin.May have rhizomes: Rhizomes are typically found in plants, not fungi.Are heterotrophic: Fungi are heterotrophic, meaning they cannot synthesize their own food and must absorb it from external sources. Plants are generally autotrophic through photosynthesis.Can photosynthesize: This characteristic is unique to plants, as they have chloroplasts and can synthesize their own food using light energy.May have aseptate hyphae: This is a characteristic of some fungi. Aseptate hyphae are fungal filaments without septa, or cross-walls.May produce seeds: Producing seeds is a characteristic exclusive to plants.Which food item contains a lot of processed simple sugars?
cake, cookie, candy, honey, milk
Processed food items such as candies, cookies, soda, and sugary cereals contain a lot of processed simple sugars.
Explanation:Sugar is a type of processed simple sugar that is commonly found in many food items. Some examples of food items that contain a lot of processed simple sugars include candies, cookies, soda, and sugary cereals. These foods are often high in calories and can contribute to weight gain and other health problems when consumed in excess.
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Why are bubbles produced by catalase positive organisms after addition of hydrogen peroxide?
The breakdown of hydrogen peroxide into oxygen and water is mediated by the enzyme catalase. When a small amount of an organism that produces catalase is introduced into hydrogen peroxide, rapid elaboration of bubbles of oxygen, the gaseous product of the enzyme's activity is produced.
The enzyme catalase, which aids in cellular detoxification, is produced by some bacteria. Catalase kills the bactericidal impacts of hydrogen peroxide and its fixation in microbes has been connected with pathogenicity. The catalase test works with the discovery of this catalyst in microbes.
The test is simple to take; H2O2 is simply mixed with bacteria. In the event that air pockets show up because of the development of oxygen gas, the microbes are catalase positive. Assuming that no air pockets show up, the microbes are catalase negative.
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Which statements correctly describe the properties of air? Check all that apply.
air pressure is created by the weight of the atmosphere pushing on the earths surface
denser air is heavier than less dense air
air is less dense at higher altitudes
Air is odorless, colorless, and tasteless.
What are the properties of the air?
Air is odorless, colorless, and tasteless. Air is everywhere, it is Earth's main resource. Among its fascinating property are the effects of air pressure and Bernoulli's principle. Air is an example of matter.
What is not a property of air?
"It is a compound is not the property of air. Air is a combination of gases and hence it is a mixture. Compound is characterized by chemical bonding between the elements".
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Describe the niche of the giraffe
The niche of the giraffe is characterized by its unique adaptation of a long neck to feed on high foliage, which reduces competition for food sources. Variation among species, as exemplified by giraffes, is vital for adaptation and survival in changing environments. The giraffe's distinct niche also demonstrates the concept of competitive exclusion in ecological communities.
The niche of the giraffe is highly specialized within its ecosystem. Giraffes have evolved certain structural adaptations, such as their long necks, to exploit a unique resource – the high foliage of trees in their habitat. These majestic animals browse on leaves that are out of reach for most other terrestrial herbivores, reducing direct competition for food. In addition, their height enables them to spot predators from long distances, which is beneficial in the open habitats of the African savannas.
Furthermore, the ecological niche involves not only the giraffe's food sources but also their role within the community. By feeding on higher vegetation, giraffes may also play a part in shaping the structure of their environment, which can affect other species. The niche of a giraffe showcases the importance of variation among species, which can be crucial for survival amid environmental changes.
Lastly, the giraffe's niche reflects the concept of competitive exclusion. No two species can occupy the exact same niche within an ecosystem. Thus, giraffes have carved out a niche that allows them to live without direct competition for their primary food source, ensuring their continued survival unless environmental conditions change drastically enough to challenge their adaptability.
what is the optimum temperature for the production of glucose in plants
Optimum temperature for the glucose production ( photosynthesis) is between 50 and 68 degrees Fahrenheit, or 10 and 20 degrees Celsius.
Explanation:There are two types of reactions during photosynthesis:
Light dependent reactions.Light independent reactions.Light dependent reactions of photosynthesis are not affected by changes in temperature, but the light independent reactions of photosynthesis are dependent on temperature.
These reactions are catalyzed by enzymes. As the enzymes get their optimum temperatures the overall rate increases.
Why is the soil on mountain slopes infertile and the soil in valleys fertile?
The main reason is slope and high altitude of mountains with low water availability.
Explanation:The soil of mountain is present in thin layer with low humidity. And due to slope like nature of mountains when it rains, rain water does not absorb in soil while it washes away fertile soil and nutrient with itself.While the soil in valleys is fertile because valleys are plains with thick layers of soil having different nutrient types. And when it rains, rain water collected and absorbed in plain land making soil fertile.Mountain slope soil is often infertile due to erosion caused by water runoff, which depletes the nutrient-rich material in soil. Conversely, valleys, particularly those near large rivers, have fertile soil due to regular deposits of nutrients from the flooding and receding of rivers. Human practices like terrace farming can also transform infertile mountain soil into fertile land.
Explanation:The reason the soil on mountain slopes is typically infertile while the soil in valleys can be fertile has to do with topography, water runoff, and nutrient deposition seasonality. Steep slopes are prone to erosion, so the soil becomes thin and less nutrient-rich as parent material is washed away. This means less optimal conditions for plants, which further results in soil infertility.
Conversely, valleys, especially those near large rivers, receive frequent deposits of organic matter during flooding. This seasonal activity replenishes the soil with nutrients, making it fertile. Additionally, human activities like irrigation and plowing, originally practiced by ancient riverine farmers, can further enhance soil fertility in these low-lying areas.
It's also worth mentioning unique practices like terrace farming, used to transform the steep, infertile mountainsides into flatter, arable land. This agricultural innovation made possible by human creativity and resourcefulness has allowed the cultivation of crops in challenging terrains, demonstrating how human adaptability can defy the geographical constraints imposed by topography.
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What is the process that photoautotrophs use to produce their food?
A) Chemosynthesis
B) Autosynthesis
C) Hemosynthesis
D) Photosynthesis
D. Photosynthesis
Process of turning energy from sunlight, water, and carbon dioxide into sugar(food source) and oxygen
The formula is
6CO2 +6H2O >energy> C6H12O6 + 6O
Or
6 carbon dioxide + 6 water (energy=sunlight) Sugar + 6 oxygen
The process that photoautotrophs use to produce their food is photosynthesis.
So, option d ( photosynthesis) is correct .
Photosynthesis is the process which is used by the plants . In which plants uses sunlight energy and convert carbon dioxide ,water into the molecules which is required for growth. Some of the molecules are sugar, enzymes etc.
The reaction of photosynthesis is :
6CO2 + 6H2O ------> C6H12O6 + 6O2.
What element is always present in an organic compound
A) carbon
B)oxygen
C)glucose
D)hydrogen
Some elements mentioned above, such as oxygen are present in organic compunds in many occasions, but from all of the options, the one that is always present is:
A. Carbon
Carbon is found in all organic compunds because of the bonds it can form, being able to form up to 4 covalent bonds.
Hope it helped,
BioTeacher101
Which of these options is a simple sentence? Select one: a. This cave is full of bats; I don't want to go inside! b. I don’t want to go into this cave—I think it’s full of bats! c. I don't want to go inside this cave full of bats.
I don't want to go inside this cave full of bats since it contains no comma's, colons, dashes or anything else of that sort.
Final answer:
Option c, 'I don't want to go inside this cave full of bats,' is a simple sentence because it contains one independent clause, making it the correct answer.
Explanation:
The question asks which option is a simple sentence. A simple sentence is a sentence structure that contains one independent clause and no dependent clauses. It has a single subject and predicate and expresses a complete thought.
a. This cave is full of bats; I don't want to go inside! - This is a compound sentence because it has two independent clauses separated by a semicolon.
b. I don’t want to go into this cave—I think it’s full of bats! - This is a complex sentence because it expresses more than one idea and has a dash indicating additional information.
c. I don't want to go inside this cave full of bats. - This is a simple sentence because it contains one independent clause with a single subject and predicate, expressing a complete thought clearly.
PLEASE HELP ME
Which describes the duty of a first responder to a crime scene?
A) searches for evidence
B) determines time of death
C) photographs the crime scene
D) renders aid and assistance
As the first member of the CSI team to arrive on a crime scene, you discover several first responders have been on the scene and left with the victim. What should be your first action when arriving on the scene?
A) secure the crime scene
B) take photographs of the crime scene
C) obtain the names of all the first responders
D) outline the approximate location of the victim
The first responders are the ones who reaches at the crime scene before anyone else. The first responders are usually the police officers. The duty of the first responders is to provide any aid or assistance to the victims that may be present on the scene. The first responders then secure the crime scene so that the scene is not contaminated.
Hence, the answer is 'Option D - renders aid and assistance'.
The CSI team members arriving on the crime scene after the first responders have left with the victim should immediately secure the crime scene. The securing of the crime scene is necessary so that the evidences present at the scene are not contaminated and can be collected for forensic tests.
Hence, the answer is 'Option A - secure the crime scene'.
The first responder in a crime scene is generally police officers. The prime and important duty of an officer in the crime scene is to look for a victim and provide him/her with proper aid and assistance.
The first action of first responder of the crime scene will be securing the scene.
Further Explanation:
The first responders or the police officers are the people who officially respond to the crime scene at first. The moment an officer reaches a crime scene he/she must look for a victim and determine whether the victim is alive or not. If alive, the office must provide all the required assistance and aid to the victim as his/her prime duty.
The officers at the crime scene are also responsible for protecting the crime scene and public present there. They also control any further changes in the crime scene after occurrence of the incident. The first responders must also take care of their safety as well as the safety of the local citizens. For this reason, they must also look for a suspect at the crime scene.
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Answer Details:
Grade: College Biology
Subject: Biology
Chapter: Crime Scene Management
Keywords:
Crime scene, crime, scene management, crime scene protection, barricading, first responders, first aid, officers.
What are the basic building blocks of DNA and RNA? A. nucleotides B. phosphorous C. proteins D. sugar
Answer is option A. nucleotides
Answer:
(A). Nucleotides
Explanation:
The nucleotides are the basic unit in formation of DNA and RNA. The both nucleic acids contain nucleotides with different nitrogenous bases. The nucleotide consist of ribose sugar, phosphate and a nitrogenous base.
The ribose sugar is present in the RNA and deoxyribose in the DNA. In the absence of phosphate group, the ribose sugar and nitrogenous base forms a nucleoside.
Healthy soil is able to provide all the nutrients that support plant growth, and to do so year after year. What biotic or abiotic factor directly supplies these nutrients?
A.
microorganisms that live in the soil or on plant roots
B.
water from rain or melted snow
C.
weathered rocks in the soil
D.
grasses and other small plants
Answer: A. Microorganisms that live in the soil or on plant roots
B. Water from rain or melted snow
Explanation: Soil is the base for plants to grow. A soil is termed as healthy soil which contains all the biotic and abiotic factors that are essential for the plant growth.
Biotic factors : Biotic factors include all the necessary living organisms that promote plant growth. Biotic factor mainly include bacteria , fungi , protozoa , algae etc.
Microorganisms made Symbiotic relationship with plant. They provide plant essential nutrients and plant provide them shelter.
Abiotic factors : Abiotic factors include non living factors such as air , water , sun light etc.
Water is most important abiotic factor for healthy soil. Water helps plant to transport essential nutrients present in soil through the plant. Water also gives plant stability in the soil.
Melted snow can also be used in place of water.
the variable in the experiment that the scientist manipulate is called
The thing that is changed on purpose is called the manipulated variable. Sometimes it is also called the independent variable. In an experiment, there are many variables for a scientist to keep track of. A variable is anything that can change in an experiment.
The variable in the experiment that the scientist manipulates is called the independent variable.
Explanation:The variable in an experiment that the scientist manipulates is called the independent variable. It is the variable that the scientist deliberately changes in order to observe its effect on the dependent variable, which is the outcome or response being measured. For example, in an experiment testing the effect of fertilizer on plant growth, the scientist can manipulate the amount of fertilizer applied to different groups of plants and observe the resulting growth as the dependent variable.
It is the factor being tested to observe its effect on the dependent variable, which is the outcome or response under investigation. By altering the independent variable, scientists can assess its impact on the experiment's results and draw conclusions about cause-and-effect relationships.
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Complete Question:
The variable in the experiment that the scientist manipulate is called ?