Answer: Multiple populations in a given area
Enzymes are biological catalysts. Enzymes are proteins that are found inside cells to
increase the rate of chemical reactions within each cell. Enzymes are denatured
(destroyed) by various environmental conditions. Amylase is an enzyme in the digestive
system that helps to break down complex carbohydrates into simple sugars.
HYPOTHESIS: Amylase works best in an environment with a pH level of 7. what is the independent and dependent variable sum1 please help!
Answer:
Explanation:
independent= pH as you will change the pH in order to test your hypothesis and see if it's true
dependent= how amylase works-needs to be measured so you can see how easily it does it function depending on the pH (dependent on the independent variable)
The independent variable is pH, you change it to test your hypothesis; The dependent variable is the activity of amylase enzyme depend on the pH value.
What are the properties of an enzyme ?Enzymes are protein catalysts that speed up the rate of biochemical reactions
The enzyme activity is pH-specific, catalyze both forward and reverse reaction but do not decide the direction of the biochemical pathway.
An enzyme have active site which bind to substrate and form desired products.
Several factors influence the enzyme activity like heat, temperature and varying pH.
Enzyme show absolute, relative, group, stereo-specificities and regulatory function.
Physical properties include enzyme act as colloid, it become inactivated below boiling point of water.
Enzymes are thermos-labile as it can withstand temperatures of 100 degrees.
The optimum temperature needed for enzymatic activity varies from 25 degrees Celsius to 45 degrees Celsius.
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I am full of cones that make images clear. If you didn’t have me, you’d still see but you’d be worse for the wear. What part of the eye am I?
It would be "Retina"
Hope it helped.
Thank YouA biomass pyramid of an ecosystem is shown.
Tertiary consumers
Secondary consumers
Primary consumers
Producers
Which statement provides the best explanation for the difference in biomass of organisms found at each trophic level?
A. Organisms at higher trophic levels have less energy available to them than organisms at lower trophic levels.
B. Organisms at higher trophic levels require smaller habitats than organisms at lower trophic levels.
c. Organisms at lower trophic levels provide less energy than organisms at higher trophic levels.
D. Organisms at lower trophic levels outcompete organisms at higher trophic levels.
Answer:A
Explanation:
The statement provides the best explanation for the difference in biomass of organisms found at each trophic level is: organisms at higher trophic levels have less energy available to them than organisms at lower trophic levels.
WHAT IS TROPHIC LEVEL:Trophic level of an organism refers to the position of the organism in the flow of energy in an ecosystem. Organisms feed on one another in an ecosystem to obtain energy needed for their metabolic activities. More energy is contained in lower trophic levels than that of higher trophic levels. This means that, according to this question, more energy is in the producers than tertiary consumers.Therefore, the statement provides the best explanation for the difference in biomass of organisms found at each trophic level is: organisms at higher trophic levels have less energy available to them than organisms at lower trophic levels.
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Explain the formation of sedimentary rocks?
sedimentary rocks are types of rocks that are formed by the accumulation or deposition of small particles and subsequent cementation of mineral or organical particles on the floor of oceans or other bodies of water at the earths surface
Explanation:
why does the density of liquid water increase as it cools?
The density has been inversely proportional to the volume of the substance and the temperature. The density of the liquid water increases as it cools as the temperature decreases.
What is the relation between density, volume, and temperature?The density of the substance has been defined as the place occupied by the substance in a liter or milliliter of solution. It has been known to show an inverse relationship between volume and temperature.
As the liquid water cools down its temperature starts decreasing which causes the collision of the particles and kinetic energy to decrease leading to decrease in the volume of the matter as particles start moving close to each other.
As a result, the volume of the substance gets decreases which inversely affects the density of the material. The decreased volume increases the density of the substance. Hence, density shows an opposite reaction to the factors like temperature and volume.
Therefore, an increase in density is due to a decrease in the volume of the matter.
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Leigh has collected data and performed statistical
tests for analysis. Describe the conclusions she can
draw about the data based on her analysis.
Answer:
She will obtain results to support -or reject- her working hypothesis. These results are subjected to statistical analyses in order to confirm that they are statistically significant
Explanation:
The scientific method is a rigorous process that consists of raising a working hypothesis, which is tested by experimentation or observational procedures and analysis of the results. The statistical analyses may have key roles during this procedure. In an experiment that involves statistical analyses, the results are subjected to statistical measures to evaluate the significance level and thus confirm (or reject) the statements made in the working hypothesis. The p-value is one of the most used statistical measures to determine if differences are due to randomness, or they are statistically significant.
Answer:
Because the calculated chi-square value of 5.19 is less than the critical value of 7.82, the null hypothesis can be supported. She is 95% confident that there is no significant variation in shell color along the beach coastline.
Explanation:
this is the Sample Response
Which of the following should be used to make a precise measurement of
liquid volume?
A. Microscope
B. Test tube
C. Thermometer
D. Graduated cylinder
Answer and Explanation:
D. Graduated Cylinder
You use a Graduated Cylinder. Graduated cylinders have numbers on the side that help you determine the volume. Volume is measured in units called liters or fractions of liters called milliliters (ml).
The Graduated Cylinder used to make a precise measure of liquid volume. Graduated cylinders have digits on the side that help you select the volume. Volume is measured in units called liters or fractions of liters called milliliters (ml).
What tool is used to measure the volume of a solid?A volume of water adequate to cover the things is placed in a graduated cylinder and the volume read.
The entity is added to the cylinder and the volume read again. The contrast between the two volumes is the volume of the object.
Thus,The Graduated Cylinder used to make a precise measure of liquid volume.
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The elements potassium (K) and chlorine (CI) can form an ionic bond. Which of the following
statements correctly explains what occurs (in this ionic bonding)?
1.) As chlorine has 7 valence electrons, it tends to form bonds to gain one electron (to get a full valence shell of 8).On the other hand, potassium has one valence electron, so it tends to lose this electron to other atoms (and
become a cation)
2.) As chlorine has 7 valence electrons, it tends to form bonds to lose all 7 electrons. On the other hand,potassium has one valence electron, so it tends to gain 7 electrons (to get a full valence shell of 8).
3.) In this ionic bonding, potassium is the anion and chlorine is the cation.
4.) During the ionic bonding between potassium and chlorine, 8 electrons are shared between these 2 atoms.
Answer:
As chlorine has 7 valence electrons, it tends to form bonds to gain one electron (to get a full valence shell of 8).On the other hand, potassium has one valence electron, so it tends to lose this electron to other atoms (and
become a cation)
A cell converting food into energy and removing waste products are examples of:
a. Photosynthesis
b. Pinocytosis
c. Homeostasis
d. Evolution
Answer:
A
Explanation:
Is this picture below a compound or an element?
true or false Geoengineering will have no negative effects on the environment.
It is false that geoengineering will have no negative effects on the environment.
What is geoengineering ?Geoengineering, also known as Climate Engineering, is the deliberate, extensive modification of the Earth's environment and climate in order to stop further climate change, halt and stop global warming, and lessen the effects on human society and the ecosystem.
Spraying compounds into the atmosphere to create reflecting aerosols and reflect sunlight into space is known as solar geoengineering. Although this would prevent global temperatures from rising, local or regional temperatures may still rise over the coming years, according to a recent study.
Hence, it is false that geoengineering will have no negative effects on the environment.
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how new technology and experimental methods can lead to changes in theories.
Answer:
New findings and new evidence about a scientific theory can change the aspects of this scientific theory and in some cases, it can be proved as wrong or can be supported by more strong evidence that can prove its liability.
New technology allows scientists and researchers to study various untouched aspects and leads to find new evidence to support or prove the theory can be either change or unproven.
Thus, new technology and experimental methods can lead to changes in theories.
Which of the following is nota cation? mercurous ion sulfate Ca 2+ iron(III) ion
1. List Earth's four layers, in order, and tell what makes up each layer.
2. What is Earth's thinnest layer?
3. Which layer has the lowest density?
4. What evidence has geologist used that tells them Earth has four layers?
Answer:
1. The Earth is made up of the inner core (center of earth; hot, dense ball of iron), outer core (surrounding inner core; made up of iron and nickel), the mantle (liquid layer, made up of bits and pieces of other layers), and the crust (the outermost layer of the Earth; the ground we walk on)
2. Earth’s thinnest layer is the crust, amounting for less than 1% of this planet’s volume.
3. The densest layer is the solid metal inner core, the mantle is of intermediate density, and the least dense layer is the lithosphere, particularly the continental lithosphere.
4. Scientists look at these happenings regarding the Earth to find out more about its layers:
1. Seismic waves and earthquakes
2. Volcanoes
3. Principles of density
4. Earth is magnetic
Hope this helps.
Explanation:
what is the differences between boiling and autoclaving
Explanation: Water baths reach a maximum boiling point of 100°C (212°F). Autoclaves ideally operate at higher temperatures of 120°C (284°F) and can go as high as 133°C (273 °F) Boiling in a water bath can take an hour or longer for effective sterilization to be achieved.
A chemical is added to cells, stopping all the activity of ribosomes. What is the result?
A. lipid synthesis stops
B. protein synthesis stops
C. cellular respiration stops
D. transcription stops
Answer:
The answer is B.
Explanation:
The function of ribosome is to assemble amino acids to make protein.
(Correct me if I am wrong)
The Murray River can be found in: South, America ,Europe, Africa ,Australia or Asia? :>
Hey there!
ANSWER:South Australia
EXPLANATION:Where can the Murray river be found?
The Murray River is located in South Australia. Since that's where it's located, you can find it there.
Hope this helps!
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Which of the following could not easily cross the plasma membrane? A. Water B. Carbon dioxide C. Oxygen D. All of the above could easily cross the plasma membrane.
Answer:D
Explanation:all of the above.
They are simple molecules that can cross the plasma membrane by passive diffusion.
Answer:
Water
Explanation:
Water needs osmosis but the other 2 can easily cross - my textbook
which statement describes how diffusion works? answer for edgenunity
Answer:
Diffusion is the movment of particles from an area of high concentration to a low concentration down a concentration gradient
the answer is c on e
Why fatty acids need a protein transporter to move cross membrane?
Answer:
Transport of long-chain fatty ácids across the cell membrane has long been thought to occur by passive diffusion........Fatty ácids transporters hold promise as a future target to rectify lipid fluxes in the body and regain metabolic homeostasis.
What are the roles of the two test
groups in this
investigation?
A. Both are experimental groups, and each
Individually shows the effect of the direction
B. Dhe is the experimental group and one is the
control group, and together they show the
ellect of the direction of light.
C. Both are control groups, but only Test Group)
shows the effect of the direction of light.
D. Both are experimental groups, but only Test
Group 1 shows the effect of the direction of
light
Answer:
We would also need to see the investigation to be able to help sorry
What ocean characteristics does sonar help to study?
Answer:
Sonar, short for Sound Navigation and Ranging, is useful for investigating and planning the sea since sound waves travel farther in the water than do radar and light waves
Explanation:
Which of the following statements regarding restriction enzymes is NOT true?
A) Most restriction enzymes recognize sequences of 20-25 bp in length.
B) Bacteria can add methyl groups to their DNA to prevent digestion by endogenous restriction enzymes.
C) Most restriction enzymes recognize palindromic sequences in host DNA.
D) Restriction enzymes may produce either sticky or blunt ends when digesting host DNA.
Answer:
The correct option is option A
Explanation:
Restriction enzymes are endocleases that cleave DNA fragment (of usually four, five or six nucleotide long) at specific sites to produce blunt or sticky ends. They recognize palindromic sequences of host DNA when cleaving the specific sites. The sequences below (on complementary strands) give an example of a palindromic sequences.
5'-CCC║GGG-3'
3'-GGG║CCC-5'
As can be seen above, when read from 5' to 3', the two sequences are the same despite being on opposing strands. And when cut between the guanine (G) and cytosine (C) (as shown above), it produces a blunt end. But when cut as shown below produces a sticky end.
5'- G║AATTC -3'
3'- CTTAA║G -5'
The explanation above shows options C and D are right while option A is wrong (hence the correct option).
Also, bacteria prevent their own DNA from been digested by restriction enzymes by adding methyl group to their restriction sites which prevents restriction enzymes from recognizing restriction sites of their DNA; this generally makes bacterial DNA to be highly methylated. This explanation makes option B right also.
A block of wood with a density of 10g/cm^3 is cut in half. What would the
expected density of the two halves be? *
A The density would double.
B The density would halved.
C The density would remain the same.
D The density would increase by a quarter.
the answer to ur problem above is (b)
What's an example of a monosaccaride?
Answer:
Glucose
Explanation:
Any simple sugar, like glucose, is a monosaccaride.
A person’s will be the same on Jupiter and Earth. A person’s will be greater on Jupiter than on Earth.
Answer:
Greater on Jupiter
Explanation:
Gravity depends on mass. Jupiter has more mass than Earth so its gravity is two and a half times greater. Therefore a person will weigh more on Jupiter.
Answer:
A person will be greater on Jupiter than Earth. The surface gravity is having is larger than Earth’s by roughly 2.4 times. So, if you weigh 100 pounds on Earth it would be 240 on Jupiter. Hopefully this helps! Feel free to mark this as brainliest!
when a sediment is transported down a mountain and along a stream, we are seeing the conversation of
Answer:
The options are
A. density B.volume C. area D.matter
The answer is Matter
Explanation:
When a sediment is transported down a mountain and along a stream, we are seeing the conversation of Matter.
The sediments transport substances which have a mass and they occupy different positions and volumes. This is the main reason why the answer is known as Matter.
What is the most important life processes in cells?
Answer:
oxygen, and glucose
Explanation:
Two of the chemicals and chemical processes that are most important to human life are oxygen, required for cellular respiration, and glucose, a form of sugar that releases energy during cellular respiration.
hope this helps you:)
Which factors involving the activities of people are a threat to biodiversity? pollution and succession habitat loss and predation poaching and habitat loss succession and poaching
Both poaching and habitat loss are a threat to biodiversity
Habitat loss refers to the destruction of natural ecosystems and consequent reduction in the amount of habitat available for the species living in a given area. Habitat loss is the greatest threat to ecosystems biodiversity and conservation worldwide by deteriorating natural areas and thereby reducing species distribution ranges. Habitat loss is primarily due to the expansion of human populations and human activities (i.e., mining, logging, trawling, industrial production, urbanization, etc.).
Poaching refers to the illegal killing of wild animals for different reasons (e.g., meat, recreation, etc.), in violation of international, federal, state/provincial, or local laws. Poaching can drastically reduce the number of organisms in natural populations, thereby this human activity can reduce genetic diversity and eventually may lead to the extinction of natural populations/species.
In conclusion, both habitat loss and poaching can reduce the number of organisms, reduce biodiversity and eventually cause the extinction of natural populations.
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Answer:
C. Poaching and habitat loss
Explanation:
Test 100%
Also, good luck to whoever may need this anwer<3
I hate biology and the teacher can you help me with this question
Answer:
B
Explanation: