Answer:
Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation). Variation may be shown in physical appearance, metabolism, fertility, mode of reproduction, behaviour, learning and mental ability, and other obvious or measurable characters.
chromosomes or by differences in the genes carried by the chromosomes. Eye colour, body form, and disease resistance are genotypic variations. Individuals with multiple sets of chromosomes are called polyploid; many common plants have two or more times the normal number of chromosomes, and new species may arise by this type of variation. A variation cannot be identified as genotypic by observation of the organism; breeding experiments must be performed under controlled environmental conditions to determine whether or not the alteration is inheritable.
Genotypic variations are caused by differences in number or structure of Environmentally caused variations may result from one factor or the combined effects of several factors, such as climate, food supply, and actions of other organisms. Phenotypic variations also include stages in an organism’s life cycle and seasonal variations in an individual. These variations do not involve any hereditary alteration and in general are not transmitted to future generations; consequently, they are not significant in the process of evolution.
Explanation:
Brainliest please?
For a commercial application using an enzyme, the progress of the
enzyme-catalysed reaction needs to be studied.Which structures will be present in a cell that causes cholera?
Paramecium A paramecium is a unicellular, eukaryotic organism. Which statement best describes a function of ATP in a paramecium? O ATP provides the energy to move cilia. 0 ATP signals the presence of other nearby organisms, O ATP senses changes in the surrounding aquatic environment.
Water Cycle
Wind
Groundwater
Ocean
Salt water
The amount of runoff at Y will increase as the
evaporation rate exceeds the infiltration rate
O precipitation rate exceeds the infiltration rate
precipitation and infiltration rates remain the same
slope of the land decreases
the__method would be the best way to determine when an approaching thunderstorm will reach your town.
a. analog b. trends c. climatology d. persistence
HELPPPPPP
B:Trend
definetly didnt answer this question before *cough cough*
Answer:
Trends
Explanation:
What represents high pressure on a weather map?
Explanation:
When the air is warm, gas molecules move around quickly in the air pushing out on the area around them. This causes high atmospheric pressure. ... On weather maps, these readings are represented as a blue “H” for high pressure or a red “L” for low pressure.
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Salad dressing is a(n)
A. Compound
B. Element
C. Heterogenous
D. Homogenous
Answer:
if there is two then it would be either c or d
Explanation:
what is the name of the instrument that separates the colors of two-colored gem minerals?
Answer: Dichroscope
Explanation:
Dichro - of a crystal) showing different colors when viewed from different directions, or (more generally) having different absorption coefficients for light polarized in different directions.
which charestics do volvox and euglena share
Answer:
They all have hair like structures for movement like flagella or cilia.
No exceptions to the central dogma exist. Rna is always transcribed from dna, and rna is translated to produce proteins. True or false?.
The above-given statement that 'No exceptions to the central dogma exist. RNA is always transcribed from DNA, and RNA is translated to produce proteins' is false.
The above statement is false because of the process of reverse transcription.
In the field of biology, central dogma can be defined as a process through which mRNA is formed by DNA, under a process named transcription. The mRNA formed then forms proteins under the process referred to as translation.
However, in some organisms, like the retroviruses, the process of reverse transcription was discovered. Reverse transcription is the process by which RNA is converted into DNA which is an exception to the central dogma process. The process of reverse transcription is now being used in genetic engineering due to its various benefits.
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The Image below shows the cambium being indicated by the arrow. What is the function of this plant structure?
-Transports water to the surface of the leaves
-Expands the width and height of plants through growth
-Gives plants support
-Acts as a receptor for gas intake
Answer:Wide
Explanation:
The image that shows the cambium is indicated by the arrow. The function of the plant structure is to expand the width and height of plants through growth. The correct option is b.
What is cambium?Cambium is a narrow plant membrane found directly beneath the bark of a woody tree or plant. The cambium has numerous purposes. It develops xylem and phloem layers in woody plants, increasing the diameter of the stem.
It also promotes secondary root and stems growth. Secondary phloem and xylem tissue are produced by the vascular cambium. The vascular cambium is a plant tissue located in the stem of a vascular plant between the xylem and the phloem. It also serves as a source of secondary xylem and secondary phloem growth.
Therefore, the correct option is b, expanding the width and height of plants through growth.
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Some cells have multiple dendrites and/or axons. What advantages does this have for the nervous tissue?
Answer:
It receives information from several cells.
Explanation:
The main advantage of cells having multiple dendrites and/or axons is that it receives information from several cells as compared to those cells which have one dendrite and receive information from only one cell. If neurons have hundreds or thousands of dendrites, so these dendrites allow the cell to receive information from thousands of other cells. So we can say that dendrites number plays a key role in nervous tissue.
byers dl. evolution in heterogeneous environments and the potential of maintenance of genetic variation in traits of adaptive significance. genetica. 123: 107-24. pmid 15881684 doi: 10.1007/s10709-003-2721-5
One of the primary problems in evolutionary biology has been how to maintain genetic diversity in qualities that are important for adaptation. Selection in diverse environments has been proposed as a means of facilitating the maintenance of genetic variation, taking into account the pattern of increasing genetic variation linked with environmental clines and heterogeneous habitats.
What is Genetic variation ?Genetic variation is the variance in DNA sequences among members of a population. Germ cells, such as sperm and eggs, as well as somatic (all other) cells, are prone to variation.
Examples of genetic variants that can exist in a human population include skin colour, hair colour, dimples, freckles, and blood type. The altered leaves of carnivorous plants and the evolution of flowers that resemble insects to entice pollinators are two examples of genetic variation in plants.Learn more about Genetic variation here:
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surface soil is good for plants ,why
Answer:
because it contains something in it that's why ok.
Explanation:
..........
Answer:Soils' properties vary with the soil depth. The surface soil, or topsoil layer (O and A horizon in Figure 1–2), usually contains less clay, but more organic matter and air, than the lower soil layers. Topsoil is usually more fertile than the other layers and has the greatest concentration of plant roots.
Explanation:
A general converts mechanical energy into _____________ energy
A) chemical
B) electrical
C) light
D) sound
chemical energy
pls make me as the brainliest Answer
Answer:
B) electrical energy
Explanation:
A generator converts mechanical energy into electrical energy. For example, a hydroelectric power plant converts the mechanical energy of water in a storage dam into electrical energy. An internal combustion engine is a heat engine that obtains mechanical energy from chemical energy by burning fuel.
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-Silver
A biology teacher placed a chicken egg in vinegar to dissolve the shell exposing the cell membrane. the teacher then placed the egg in a solution of sodium chloride in water in order to demonstrate cellular transport what type of cellular transport is the teacher demonstrating?
A. facilitated diffusion
B. active transport
C. filtration
D. Osmosis
I would assume osmosis, as sodium chloride is just salt and salt travels to water, which is abundant in the egg.
Option D. osmosis is the cellular transport is the teacher demonstrating in the given case.
Osmosis is the flow of water through a semi-permeable membrane from an area of higher water concentration to an area of lower water concentration. When the egg was placed in a solution of vinegar,
vinegar reacts with the eggshell, bubbles surround the egg and dissolve the shell.It is known vinegar is a weak acid diluted with lots of waterWater moves from the vinegar, through the egg’s semi-permeable membrane, into the egg due to osmosis.When the egg was placed in the salt solution that had a higher concentration of water than was inside the egg,
water moves into the egg.The egg will become larger when placed in the salt solution due to the solution’s low salt concentration and sinks in the solution.Thus, the correct answer is - option D. osmosis.
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Why do the blood vessels going to the skin and internal digestive organs constrict and get smaller during a fight-or-flight response?
a to let in more light
b to allow the body to take in more oxygen
c to redirect blood to the areas that are involved in the panic response
d to increase blood flow
Answer:
Theres the answer.
Explanation:
The sympathetic division can be thought of in a general way as helping the body to mount a “fight or flight” response, with an overall increase in heart rate and blood pressure. Pressure increases because blood vessels constrict under sympathetic stimulation.
how do enzymes play a factor into cellular respiration and photosynthesis? Name 2 instances where you use enzyme was inhibited/ plugged?
Answer: Enzymes are proteins that catalyze, or affect the rate, of chemical reactions without themselves being altered in the process. Specific enzymes catalyze each cellular reaction. The main role of enzymes during the respiration reaction is to assist in transferring electrons from one molecule to another.
There are two types of inhibitors; competitive and noncompetitive inhibitors. Competitive inhibitors bind to the active site of the enzyme and prevent substrate from binding.
Explanation:
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CHAPTER 14
4. A population’s growth rate is the ____________ rate minus the _____________ rate.
5. When a cause of death is density _____________________, a certain proportion of a population dies regardless of the population’s density.
6. A close relationship between two species in which each species provides a benefit to the other is called ______________________.
What structure can be found in both a virus and a cell?
I’ll make you brainiest
Answer:
I think it's nucleic acid....
Explanation:
What is the function of the Nucleus?
A. break down worn out cell parts
B. help the cell maintain its shape
C. Store and protect DNA
D. Produce energy
Answer:
C
Explanation:
Answer:
The function of the nucleus is (C)–– to store and protect DNA.
Explanation:
Why are marathon runners collapsing and dying.
Answer:
Why do marathon runners collapse and die? Some of the reasons why marathon runners often collapse near the finishing line is because the build-up of lactic acid in the blood during the run triggers abnormal heart rhythms and also exhaustion, emotional stress, dehydration and heat stroke
Answer:
Some of the reasons why marathon runners often collapse near the finishing line is because the build-up of lactic acid in the blood during the run triggers abnormal heart rhythms and also exhaustion, emotional stress, dehydration and heat stroke.
Explanation:
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food dropped on a microbe-laden hard surface, such as a floor, becomes contaminated the moment it lands
The statement "food dropped on a microbe-laden hard surface, such as a floor, becomes contaminated the moment it lands" is true. Here Microbiological contamination is detected.
Microbiological contamination refers to the non-intended or accidental introduction of infectious material like bacteria, yeast, mold, fungi, virus, prions, protozoa or their toxins and by-products.
Foods that won't be cooked, including as salads, fresh fruit, as well as vegetables, or prepared foods, shouldn't be placed over raw meat, poultry, as well as fish. Keep them near the bottom of the cooler or your refrigerator so that their juices won't drip onto other foods.
The question is incomplete, the complete question is:
food dropped on a microbe-laden hard surface, such as a floor, becomes contaminated the moment it lands.
(a) True
(b) False
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is a sperm cell diploid or haploid
Answer:
haploid
Explanation:
because it is formed after meiosis
please mark me brainliest and 5 star
Answer:
Haploid
Explanation:
Two students are studying for a Science Test. On the table they had a glass of water and identical cell phones (Cell Phone A & Cell Phone B). Both of their phones had run out of battery, therefore they were both charging in the same wall outlet. Cell Phone A had a charging cord that was 3ft & Cell Phone B had a charging cord that was 9ft. Cell phone B, which was closest to the glass, vibrated while ringing and knocked over the half-full glass of water. *
Captionless Image
click here - just because we needed to make a question to post the scenario.
Part A: Identify the energy transformations that occur from the outlet charger to the ringing phone. *
Chemical energy transformations take place from the outlet charger to the ringing phone.
Part B: Explain how the Law of Conservation of Energy applies to the energy transformations that occur from the outlet charger to the ringing phone. *
This is a required question
Part C: Explain what we would see if the pencil is placed in the glass of water. What is causing the pencil to look this way? *
Part D: Predict which of the phones charged the fastest using Ohm’s Law. Justify your theory using Ohm’s Law. *
This is a required question
Part E: Argue that the amount of water in the glass affects whether it fell over or not. The glass that fell over on the student’s table was only half full. Answer using 1st & 2nd Law of Motion to support your claim. *
Answer:
I know C if u can give me A
Explanation:
Answer: im taking this right now
Explanation: can you give me the answers bc ion kno any
lohmann, k. j. et al. regional magnetic fields as navigational markers for sea turtles. science 294, 364–366
The discussion of lohmann, k. j. et al. regional magnetic fields as navigational markers for sea turtles science 294, 364–366 is given in below paragraph-
Young loggerhead sea turtles (Caretta caretta) migrate across the North Atlantic Ocean from eastern Florida before making their way back to the North American coast. Here, we report that hatchling loggerhead turtles responded to magnetic fields by swimming in directions that would, in each case, help keep the turtles within the North Atlantic gyre currents and facilitate movement along the migratory pathway. These magnetic fields simulated those found in three widely separated oceanic regions. These findings suggest that juvenile loggerhead turtles have a navigational system whereby local magnetic fields serve as navigational markers and trigger changes in swimming direction at significant geographic borders.
What are magnetic fields?An electric charge, an electric current, and magnetic materials are all affected magnetically by a magnetic field, which is a vector field. A force perpendicular to the magnetic field and its own velocity acts on a moving charge in a magnetic field. The magnetic field of a permanent magnet attracts or repels other magnets and pulls on ferromagnetic materials like iron. A magnetic field that changes depending on the location will also exert a force on a variety of non-magnetic materials by influencing the mobility of their outer atomic electrons. By using electric currents, like those found in electromagnets, and by altering the electric fields over time, magnetic fields are produced that surround magnetized things.
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Individuals that are well adapted to their environment will survive and produce
a. fewer mutations.
b. more offspring.
c. stronger genes.
d. better traits.
The Individuals that are well adapted to their environment will survive and produce : (B). more offspring.
Meaning of environmental adaptationAn environment is simply defined as the physical surrounding and condition individual or specie is subject to. It includes both living things and non living things.
Environmental adaptation is the ability possessed by an organisms to get used to an environment, that is he is not affected by the environmental factors but can live with it and still function optimally.
In Conclusion, The Individuals that are well adapted to their environment will survive and produces more offspring.
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Give an example of radiation.
Answer:
A burning candle.
Explanation:
Gives off heat and light radiation.
Answer:
Electromagnetic waves through the microwave.
Explanation:
Identify the correct equation for aerobic respiration.
a) Glucose + Carbon Dioxide → Oxygen + Water + Energy
b) Glucose + Oxygen → Carbon Dioxide + Water + Energy
c) Carbon Dioxide + Water+ Energy → Glucose + Oxygen
d) Glucose + Water → Carbon Dioxide + Oxygen + Energy
Answer:
B
6CO2 + 6H20 + (energy) → C6H12O6 + 6O2
Explanation:
Answer:
B
Explanation:
Got it correct on test.
Tides are not the same all over the world or even in our same state. What other factors might change the way tides are experienced?
This is because that the moon orbits the Earth in the same direction that the Earth rotates on its axis. This extra 50 minutes which means that the same location will be experience the high tides in every 12 hours 25 minutes. This was varies between the different locations as the world or the local geography has an effect on the tidal dynamics
Tides also differ at the different times of the year that tdepending on the location of the Moon and to the Sun in relation to the Earth. At times when the Sun, the Earth, and the Moon are in the line with each other (during full and new moons), the tidal range was larger because both the Sun's and the Moon's gravitational pull create the tide.
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someone helppppp which one is it
Answer:
The orange box
Explanation:
It is the most reasonable for the plant base orginism