Answer:
The correct option is C) Rangeland- Grazing livestock
Explanation:
Rangeland can be described as a land which consists of grasses, shrubs, woods, wetlands etc which are ideal for the grazing of domestic and wetland animals. Hence, a rangeland is used for grazing livestock. Hence, option C is correct.
Other options, like option D, is not correct because an urban land supports city life. It is not ideal for the growing of crops as it contains pollution of the city.
Answer:
Cropland ----> growing food
Explanation:
For the other one
explain virology in biology
Answer:
Virology is the study of viruses and virus-like agents, including (but not limited to) their taxonomy, disease-producing properties, cultivation and genetics. It is often considered a part of microbiology or pathology.
Explanation:
Answer: virology is the study of viruses
Explanation:
Virology is the study of viral : which are submicroscopic, parasitic particles of genetic material contained in a protein coat– and virus-like agents.
When atoms combine to form compounds, they gain,lose,or share
Answer:
it depends upon the atomic number
Explanation:
if the atomic number is below 4 it will lose electrons
if the atomic number is above 4 it will gain electrons
if the atomic number is 4 it will share its electrons with other atom of the same element make covalent bonds
ex; carbon
Answer: electron
Explanation:When atoms combine to form compounds, they gain,lose,or share *electron.*
What is Methanobacterium ruminantium Domain and Kingdom?
Answer:
Methanogens are members of the domain Archaea, and fall within the kingdom Euryarchaeota
Explanation:
In a population, natural selection acts on
Answer:
In a population, natural selection acts on phenotype of individuals.
Explanation:
Natural selection tends to favour those organisms of a population which carry traits that allow them to be better adapted to the environment and these traits are passed on to their offsprings. Natural selection tends to act on the phenotype of the population whereas evolution is the phenomenon which changes the allele frequencies. Natural selection acts on individual organisms of a population whereas the change in populations, on the whole, arises due to evolution.
Natural selection within a population acts on the phenotypes of individuals. It affects differential survival and reproduction success, leading to advantageous traits becoming more common in successive generations.
Explanation:In a population, natural selection primarily acts on the phenotypes (the observable physical and biological traits) of individuals, not directly on their genotypes (the genetic makeup). Natural selection operates based on the differential survival and reproduction success of individuals. Those with advantageous traits have a higher likelihood of survival and reproduction, and these traits become more common in the population over generations. As a result, the population can gradually evolve.
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Why did Hooke call what he saw a cell
Answer:
Because they reminded him of the bare wall rooms where monks lived. These rooms were called cells.
Explanation:
"The correct answer is that Robert Hooke called what he saw a cell because it reminded him of the small rooms monks lived in, which are also called cells.
In 1665, Robert Hooke, an English scientist, observed a thin slice of cork through a microscope. He saw a multitude of tiny, empty compartments that resembled the cells of a honeycomb. These compartments were the cell walls of the plant cells that had once been alive. Hooke named these structures "cells" because they reminded him of the small, spare rooms called cells that monks lived in. The term "cell" in this context was chosen to reflect the resemblance between the small, enclosed spaces inhabited by monks and the small, enclosed spaces he observed in the cork tissue. This discovery and naming convention marked the beginning of the field of cell biology."
a population of antelope has a negative population
A population of antelope has a negative or declining population when the situation possesses birth plus immigration rate is lower than that of death plus emigration rates.
What is Population?A population may be defined as the number of individuals of the same species living in a particular area at a given time.
The complete question is: A population of antelope has a negative population growth rate. Which of these conditions must also be true for the population growth rate to be negative? The options are :
Births + Immigrations > deaths + emigrations.Births + emigrations < deaths + immigrations.Births + Immigrations < deaths + emigrations. Births + emigrations > deaths + immigrations.Thus, the correct option for this question is C, i.e. Births + Immigrations < deaths + emigrations.
It is well estimated with the given equation below:
Negative or declining population = B + I < D + E.
where B = birth rate
I = immigration
D = death rate
E = Emigration
Therefore, it is well described above.
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How is the cell in Diagram B effectively using its resources?
Since lactose is absent, the repressor protein is blocking the genes and stopping transcription.
Since lactose is present, the repressor protein will begin transcription.
The cell continually produces the enzymes needed to break down lactose.
RNA polymerase is transcribing the genes since lactose is present.
Since lactose is absent, the repressor protein is blocking the genes and stopping transcription.
Option A.
Explanation:Lac operon or lactose operon is the genetic mechanism of the cell to produce the enzyme digesting lactose by production of lactase enzymes. The bacterial cell has this mechanism of lac operon which controls the production of definite amount of lactase only in presence of lactose, to minimize the wastage of proteins.
In the lac operon, there are cap sites, promoter region, operator region, and the genes producing enzymes. In presence of lactose, protein produced from the promoter attaches with the lactose which acts as inducer and frees up the operator sites for RNA polymerase to act. But in absence of glucose, the operator site remains blocked, as in figure B, restricting the lactase production.
Answer: Answer is A
Explanation: I took the Test
Question 3 (3 points)
Photosynthesis involves the transformation of light energy into what molecule?
DNA
glucose
ATP
water
Answer: ATP
Explanation: During photosynthesis particularly in the light dependent reaction or light reaction ATP ( Adenosine triphosphate) is produced.
the punnet square below represents the result of the cross between two tall pea plants.
part a: identify the genotypes & phenotypic ratios of the offspring (2 points)
part b: identify two offspring from the punnet square that could produce short pea plants if they were crossed. explain your answer (2 points)
Answer:
Part a:
The phenotypic ration will be 4:0. This is because all the offsprins will be taal,
The genotypic ration will be 2:2. This is because there will be a 50% chance of the offsprings to be homozygous tall. There is also a 50% chance for the offsprings to be heterozygous tall.
Part b:
When two heterozygotes will be crossed, there will be 25% chance that the offspring could be short pea plant.
T t
T TT Tt
t Tt tt
What is the basic definition of evolution?
Answer: Cumulative inherited change in a population of organisms through time leading to the appearance of new forms
Explanation:
These cells are part of the domains Archaea and Bacteria.
prokaryotes
eukaryotes
Answer:
Prokaryotes
Explanation:
A prokaryote can be described as an organism which is unicellular and lacks a nucleus. Other membrane- bound organelles are also absent in the prokaryotes. Organisms of the domain Archaea and Bacteria are prokaryotes.
Eukaryotes are organisms which possess a nucleus and other membrane bound organelles. These organisms are more complex than the prokaryotic organisms. Eukaryotic organisms are usually multicellular. Examples of eukaryotic organisms include humans, dogs, cats etc.
What computer generated document helps organize and display data?
A spreadsheet is a computer application for organization, analysis and storage of data in tabular form.
a spreadsheet is a computer application for organization, analysis and storage of data in tabs.
2. State the law of conservation of mass and the law of
conservation of energy.
The law of conservation of mass states that mass cannot be created or destroyed in any chemical reaction or physical change. The law of conservation of energy states that energy cannot be created or destroyed; it can only be transferred or converted from one form to another.
Explanation:Law of Conservation of Mass:The law of conservation of mass states that mass cannot be created or destroyed in any chemical reaction or physical change. This means that the total mass of the reactants in a chemical reaction must equal the total mass of the products.
Law of Conservation of Energy:The law of conservation of energy states that energy cannot be created or destroyed; it can only be transferred or converted from one form to another. This means that the total energy before a process is equal to the total energy after the process.
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Will cloning lead to designer babies who are denied an open future?
The number of covalent bonds that an atom tends to form is equal to:
A: the number of valence electrons.
B: the number of unbalanced neutrons.
C: the number of unpaired electrons.
D: the atomic number.
E: the number of nearby atoms.
Answer: C): the number of unpaired electrons.
Explanation: A covalent bond is a type of chemical bond formed by sharing equal number of electrons between two non-metal atoms so that both can attain the a stable octet or duplet structure of noble gases. The electrons shared by two non-metal atoms are the unpaired electrons. For example, in the formation of a chlorine molecule, a chlorine atom has seven valence electrons and electrons usually occur in pairs. Having seven valence electrons means that a chlorine atom has three pairs of electron and one unpaired electron in its outermost shell. The two chlorine atoms will combine together each donating its unpaired electron to be shared, thus leading the two atoms to attain stable octet structure of Argon.
Describe the three basic levels in an ecosystem. Provide an example of each.
Answer:
Producers: The green plants that make high energy molecule such as glucose (food) by the help of the sunlight is known as the producers.
Example: Plants and blue-green algae.
Consumers: The small animals that feed on the plants for their energy requirement is known as consumers.
Example: Rabbit, Goat, Cow
Decomposers: The bacteria, fungi and other microorganism that feed on the dead and decaying animals and obtain energy from this organic matter is known as decomposers.
Example: Winter fungus.
Answer:
Producers: There are the organisms that can make their own food in the ecosystem such as green plants and chemo synthetic bacteria.
Consumers: These are the organisms that feed on these producers to obtain energy such as the herbivores.
Decomposers: These are the organisms that break down living things to organis matter when they die.
Explanation:
Radiant energy is necessary for the production of which of the following? (A) oil (B) wind (C) moving water (D) all of these
B
Radiant energy is necessary for the production of Wind
Explanation:
Radiant energy is energy from electromagnetic waves. Solar energy from the sun is a form of radiant energy. The sun is responsible for powering winds in the earth's atmosphere.
Due to differential heating of the earth at different latitudes due to the spherical nature of the planet- and also due to other local factors like the terrain of a region and cloud cover - there are high and low-pressure systems formed at different regions. Air masses in the high-pressure system is of higher density while that in low pressure system is less dense. Winds are usually caused by the air rushing in from high-pressure zones to low-pressure zone to replace the rising less dense air.
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What kind of waves do cellular telephones use to transmit and receive signals
A
gamma rays
B.
infrared rays
c
microwaves
D
ultraviolet rays
The kind of waves that cellular telephones use to transmit and receive network signals is: C. microwaves.
A wave can be defined as a disturbance in a medium that progressively transports energy from its source to another location, without the transportation of matter.
In Physics, the are different kinds of wave in the electromagnetic spectrum and these include the following;
Gamma rays.Visible light.Ultraviolet radiation.X-rays.Radio waves.Infrared radiation.Microwaves.The wavelength of microwave is between the range of 1 millimeter (mm) to 1 meter (m) while its frequency is ranging from 300 megahertz (MHz) to 300 gigahertz (GHz).
Hence, microwaves are used in cellular telephones to transmit and receive network signals because of their small wavelength and high frequency.
Also, microwaves are used in cellular telephones because they are able to carry thousands of channels at once.
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A student notices that the saucer below a coffee cup becomes warmer after coffee is poured into the cup. Energy was transferred from –
the cup to the saucer by conduction.
the saucer to the cup by conduction.
the cup to the saucer by convection.
the saucer to the cup by convection.
Answer:
The correct option is A) the cup to the saucer by conduction
Explanation:
Conduction can be described as a process in which heat from an object that is warmer is transferred to an object which is cooler until both the objects have an equal amount of heat. When coffee is poured in a cup, the cup gets heat and its heat is greater than the saucer which is cooler. As a result of conduction, heat passed to the saucer from the cup until both have equal amounts of heat. Hence, the correct option is A.
In the given scenario, the heat energy was transferred from:
A). the cup to the saucer by conduction.
Conduction is described as the process by which the heat transfers from one material to another.In the given case, the hot coffee leads to the transfer of heat to the cup and then to the saucer below it through conduction.The conduction allows the heat from the cup to transfer to the saucer till they both share same level of heat.Thus, option A is the correct answer.
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The thermal energy of matter depends on how fast its particles are moving on average, which is measured by temperature and on how many particles there are which is measured by _________________?
a) matter
b) temp
c) mass
d) none of the above
Answer:
The correct option is C) mass
Explanation:
Thermal energy can be described as the total kinetic energy which an moving object possesses. As the temperature of an object will be raised, its particles will move with faster energy and hence the thermal energy will increase. The thermal energy of an object also depends on the number of atoms which the particular object possesses. The number of atoms present in an object is referred to as the mass of the object.
Which description best fits the activity of a cell during interphase?
Question 11 options:
The cell carries on metabolism.
The cell differentiates to have a new function.
The cell splits in two.
The cell splits in two but with half the normal number of chromosomes.
Answer:
The correct option is A) The cell carries on metabolism.
Explanation:
Interphase can be described as the phase of cell cycle in which the cell spends most of its time. In this phase, the cell carries out its normal metabolic functions and prepares it self for division. The phase of interphase is divided into three parts which are the Gap 1, Synthesis, and Gap 2. Hence, the correct option is A.
Other options, like option C, is not correct because the cell splits into two during cytokinesis.
Final answer:
The best description of a cell's activity during interphase is that a) it carries on normal metabolism, grows, and duplicates its DNA in preparation for mitosis and cytokinesis.
Explanation:
The description that best fits the activity of a cell during interphase is: a) The cell carries on metabolism. During interphase, a cell grows, carries out all normal metabolic functions, and replicates its DNA. This phase is divided into three stages: G1 phase (growth), S phase (DNA synthesis), and G2 phase (preparation for mitosis). Interphase is the period of the cell cycle when the cell is not dividing and is preparing for the cell division that occurs during mitosis and cytokinesis.
Explain the distinct differences between a bacterium and an animal cell.
The more ________________ the homologous structure, the more likely they _______________ shared a common ancestor
The more numbers of the homologous structure, the more likely they have recently shared a common ancestor.
Explanation:
Homologous organs are defined as those organs which do have different functions but a similar basic structure which denotes the divergent evolution. Homologous organs are seen in species that are very close to each other which are more related with each other in terms of evolution. For example, a bird is more close to each man than a fish, so do share more homologous organs common to man than fishes do. Examples of the homologous organs are hands of human and wings of birds. They have same basic structure like skeletal structure which is humerus, radius, ulna, carpals, metacarpals and phalanges. They are similar in structure but have different functions like flying in birds and gathering food in humans.
how is motion recognized
Which of these events happens during M phase in the cell cycle?
O
A. The nucleus of a cell divides into two identical nuclei.
O
B. All of a cell's chromosomes are copied when DNA replicates.
. The cell's DNA is checked for errors in replication.
O
D. The cell grows in size by adding cytoplasm and cell organelles.
"The nucleus of a cell divides into two identical nuclei" happens during M phase in the cell cycle.
Answer: Option A
Explanation:
A series of events is a cell cycle which take place within a cell as it expands and divides. An "interphase" is most time taking phase of cycle as it develops and replicates its chromosomes then prepares for cell division.
The second phase is "mitosis" which itself have four important subphase like Prophase, Metaphase, Anaphase and Telophase, out of four prophase is most time taking and rank second after interphase in occupying more time.
Here the replicated chromosomes split in two different nuclei. These genetically identical cells have chromosomes which results after cell-division.
33. Which stimulus tests the absolute threshold of vision?
A) Hair cells of the inner ear
B) Electromagnetic energy
C) Chemical substances in the air
D) A ticking watch in a quiet room
REALLY NEED THIS RIGHT
Answer:
hair cells of the inner ear
state a problem. describe what you want to find out about the relationship of the following factors to the amount of water erosion that occurs on a slope
To determine the relationship of factors to the amount of water erosion on a slope, we need to consider several variables. Soil erosion by water on a hill slope is influenced by multiple factors such as the slope angle, soil composition, and vegetative cover. The RUSLE equation, which stands for Revised Universal Soil Loss Equation, is a tool that allows us to estimate this erosion. It incorporates factors like rainfall erosivity (R), soil erodibility (K), topographic factors (LS), cover management (C), and support practice factors (P) to calculate annual soil loss. Considering slope, a steeper angle tends to increase erosion, as water flows more quickly, carrying soil particles with it. The problem we aim to solve is how to minimize water erosion on slopes, especially comparing these rates with 'tolerable' erosion rates, or T values, which represent the maximum level of soil loss that would allow for long-term soil productivity. We also explore conservation practices that can reduce erosion, such as crop rotation, terracing, and the establishment of buffer strips. In understanding erosion, federal, state, and local agencies play roles in soil and water conservation, applying these concepts in practical ways to protect the land. Knowing the factors contributing to erosion and applying principles from the RUSLE, we can plan effective conservation practices.
What is meant by the term carbon footprint?
O
A. The total CO2 released by a person
O
B. The total CO2 released by a person's garden
O
C. The total co, used up by each person
O
D. The total Co, in plants consumed by a person
A
The total CO2 released by a person is known as carbon footprint.
Explanation:
It is used to categorize the amount of carbon dioxide (and other greenhouse gases) that every human - due to human activities such as driving - are emitting into the atmosphere. It is equivalent to per capita carbon emission. The carbon footprint per person in the US, for example, is 16 tonnes which is also interpreted as the average production of carbon dioxide per person.
Countries are putting measures to curb increasing carbon footprints by enacting policies like a carbon tax and incentives towards renewable energy sources. This is in an effort to reduce global warming.
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Answer:
The total CO2 released by a person
Explanation:
Which of these outcomes is the main goal of ecosystem-
based management?
O A. To manage using trial and error
B. To account for all the complexities in a stable
population
O C. To determine how many populations can be taken
from an ecosystem
D. To determine what is best for the ecosystem as a
whole
To determine what is best for the ecosystem as a whole is the outcomes of the main goal of ecosystem- based management.
What is the goal of ecosystem-based management?The main goal of ecosystem-based management is to maintain health, production and condition of an ecosystem so that it can provide the services to humans.
So we can conclude that to determine what is best for the ecosystem as a whole is the outcomes of the main goal of ecosystem- based management.
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Cell membrane and transport
Answer:
The cell membrane is the membrane which separates a cell from its outer environment. A cell membrane is semi-permeable as it is selective in allowing the materials to enter into it and move out of the cell. The cell membrane is made up of phospholipid bilayer. The tails are made up of fatty acids which are packed inward of the layer. The phosphate head points outwards. The cell membrane also comprises of glycerol and cholesterol. Certain proteins are also embedded in the structure of the cell membrane which facilitates the movement of certain molecules across the cell membrane.