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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Which objective is referred to as the "scanning objective"?
Answer:
This question lacks options; they are:
a. 4x b. 10x c. 20x d. 100x
The answer is A
Explanation:
The objective lens is an integral part of a light microscope as it provides the viewer with the picture or image of the specimen. There are several types of objective lens depending on their magnification.
The lowest possible objective lens with the power of 4x is called the SCANNING OBJECTIVE. In combination with the eye/occular lens, it provides a magnification of 4x × 10 = 40x. The name of this lens comes from the fact that it provides a full scan of every part of the specimen being viewed before diversifying into a specific region by changing the objective.
The monomers of DNA are composed of?
Answer:
The monomers of DNA are composed of nucleotide.
Answer:
sugar, phosphate residue and a base or Nucleotide's
Explanation:
DNA consists of two long polymers that run in opposite directions forming the regular geometry of the double helix. The monomers of DNA are called nucleotides. Nucleotides have three components: a base, a sugar (deoxyribose) and a phosphate residue.
please give me brainley for this
Which of the following is a biotic factors in an ecosystem? O sunlight O nutrients in soil and water O precipitation O microorganisms
Answer:
microorganisms
Explanation:
Biotic factors include fungi,algae,bacteria etc.
While, Abiotic factors include soil, water ,sunlight and minerals
Answer:
[tex]\boxed {\tt D. \ Microorganisms}[/tex]
Explanation:
A biotic factor is a living thing in an ecosystem. For example: deer, rabbits, grass and trees are all biotic factors.
An abiotic factor is a nonliving thing in an ecosystem. Some examples include rocks, soil, and water.
Let's examine our answer choices.
Sunlight, nutrients, and precipitation are all nonliving, so they are abiotic factors. They can't be the correct choice.
That leaves: microorganisms. Microorganisms are very tiny organisms, like bacteria and amoebas. They are biotic factors, so the correct choice is D. microorganisms
7. When did whale ancestors begin living full time in the water?
Which of the following is a polysaccharide often responsible for providing structure to plants?
A. Amylose
B. Cellulose
C. Glucose
Answer:
Explanation:
The anwer is B
Which statement describes our Solar System?
O A. The Solar System is made of a very large collection of stars, gas, and dust bound together by gravity.
OB. The Solar System is made of a large planet with moons and other satellites in orbit around the planet.
O C. The Solar System is made of a group of planets orbiting at various distances around a large, central star.
O D. The Solar System is made of a group of galaxies and intergalactic gases bound together by gravitational attraction.
Answer:
B
Explanation:
Does fertilizer make a plant grow bigger? Amount of fernalizer measured in grams, quantitiesnof water measured in milliliters
Answer:
Yes, fertilizer can make plants grow bigger due to the nutrients it can provide to the soil and plants.
each kidney has large number of functional units .what is the name of that functional unit
Answer:
nephron
Explanation:
edge :3
good luck <3
which of the following is most consistent with the modern theory of evolution
The correct answer is Parents pass their physical traits to their offspring; those offspring with traits that help them survive in their environment are able to reproduce.
Explanation:
The modern theory of evolution explains the mechanisms that make organisms change. One of the main ideas this theory proposes is that organisms with traits that help them survive or reproduce have higher chances to pass their genes and traits to new generations. This mechanism makes certain traits to be favored and contributes to the evolution of organisms because after multiple generations certain traits will prevail while others will be eliminated.
Moreover, this theory specifies genes in an organism are not acquired or modified during its life but these are the results of the traits passed to the organism by its parents and evolution occurs only after a long time or multiple generations. According to this, the first option is the correct one.
What organelles are found in a Fly muscle
Answer:
Organelles of the muscle cell are also named slightly differently: the plasma membrane is called sarcolemma; the cytoplasm is sarcoplasm, and the endoplasmic reticulum is sarcoplasmic reticulum. Skeletal muscle cells have many nuclei along their membrane.
Explanation:
hopefully that helps you
According to erikson theory which stage of social development is related to adulthood?
CHOICES: A. Trust vs. Mistrust
B. Intimacy vs. Isolation
C. Initiative vs. Guilt
D. Autonomy vs. Shame
Answer:b
Explanation:
While you were on safari, your friend got bit on the leg by a posionous snake and nearly died from excessive hemolysis. Being a true scientist, you captured the snake and analyzed its venom to understand why it caused hemolysis. You found thwo enzymes, a protease (breaks down proteins), and a phospholipase. He isolated each of these enzymes and treated red blood cells with them. He found that only phospholipase caused red blood cell lysis. He also found that, after treatment of red blood cells with the phospolipase, there was excess amounts of free phosphophorylcholine (Choline phosphate group) and free diacylglycerol (glycerol with two hydrocarbon tails). 1.) What is the substrate for phospholipase and where does it cleave
Answer:
Phospholipase is an enzyme, which is classified into phospholipase A2 and phospholipase A1.
In this case we are talking about phospholipase A2, that is why the sn-2 ester bond of glycerophospholipids will be taken as a substrate, giving fatty acids as a product, such as arachidonic acid.
Explanation:
The glycerophospholipids used by this enzyme are those found in cell membranes, these pathways are usually associated with inflammation pathways for the formation of arachidonic acid that functions as an immunological mediator.
On the other hand, it must be remembered that membrane phospholipids are amphipathic, that is, with hydrophilic and hydrophobic molecules and are responsible for balancing the internal homeostasis of the intracellular environment.
A cell converting food into energy and removing waste products are examples of:
a. Photosynthesis
b. Pinocytosis
c. Homeostasis
d. Evolution
Answer:
A
Explanation:
Driving from Maine to Florida, you observe that squirrels living in the southeastern United States are much thinner than squirrels living in the northeastern part of the country. You tell your friend that you have a theory that squirrels living in the northeast have greater fat reserves for the winter months when food is scarce. Which of the statements are true? Select all that apply.
Answer:
See the options and the answer below
Explanation:
The available options to the question are:
Your statement is a valid scientific theory. Your statement uses the word "theory" in a non-scientific, colloquial way. Your statement is a hypothesis rather than a scientific theory. Your statement is not a theory but a fact.The correct answer would be that:
the statement uses the word 'theory' in a non-scientific, colloquial way. the statement is a hypothesis rather than a scientific theory.A hypothesis is a generalized statement with little or no experimental test. When a hypothesis is tested using a suitable experiment (s), it can either become valid or invalid. In order words, hypotheses are falsifiable. A theory on the other hand is a hypothesis that has been tested several times by independent researchers and found to be true.
In the illustration, the statement made concerning the squirrels is based purely on guess and not on fact. The use of the word 'theory' in the statement is totally unscientific. Only suitable experiments can prove or disprove the statement.
The correct options are 2 and 3.
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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Which feature do amber fossils have that mold fossils do not?
O preserved soft tissue
O organisms turned into rock
O solid copies of the original organism
O impressions of hard tissue left by organisms
Answer: preserved soft tissue
Explanation: just took the test!
The feature do amber fossils have that mold fossils do not preserved soft tissue. Thus, option A is correct.
What are fossils?
The fossil can be defined as the compression of the animal, plant or some organism that was living. It is compressed by the rocks or or settled in the water bodies in the form of sediments. The fossil residues have some of the carbon left in it.
This carbon is estimated by carbon dating in order to get the age of the fossil.The preserved fossils have carbon residue left which can be used as a source of information.
There are several types of the connective tissues: bones, ligaments, tendons, cartilage, and adipose tissue. In the foot, among all connective tissues, ligaments and tendons are the most abundant types. Ligaments and tendons mostly consist of densely packed collagen, which is the main structural protein of the connective tissues.
Therefore, The feature do amber fossils have that mold fossils do not preserved soft tissue. Thus, option A is correct.
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How many atoms are needed to form a molecule?
Answer:
2
Explanation:
What are the two divisions of the autonomic nervous system?
A. sympathetic and central nervous systems
B. central and somatic nervous systems
C. sympathetic and parasympathetic nervous systems
D. parasympathetic and somatic nervous systems
The two divisions of the autonomic nervous system are the sympathetic and parasympathetic nervous systems. The correct option is C. sympathetic and parasympathetic nervous systems.
Nervous systemFrom the question, we are to determine the two divisions of the autonomic nervous system.
The nervous system is divided into two main parts, which are
Central nervous system.Peripheral nervous system.The central nervous system is made up of the brain and the spinal cord, while the peripheral nervous system is made up of the nerves and ganglia that lie outside of the brain and spinal cord.
The peripheral nervous system is further subdivided into the somatic nervous system and the autonomic nervous system.
The autonomic nervous system is further divided into the sypathetic nervous system and the parasympathetic nervous system.
The sympathetic nervous system is for fight or flight responses, and
The parasympathetic nervous system is for rest and digest responses.
Hence, the two divisions of the autonomic nervous system are the sympathetic and parasympathetic nervous systems. The correct option is C. sympathetic and parasympathetic nervous systems.
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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
Metals are used in many products because of the characteristic properties that most metals have. Which product requires the high luster of metals in order to
work?
Answer: A mirrors
B. pots and pans
Cfood wrap
D.circuit boards
Answer:
the correct answer would be c
Explanation:
Answer:
A
Explanation:
The correct answer is A; Mirrors
HELP ASAP! Please help me with these 5 questions, they'd mean a lot! Giving you all my points, please answer.
1. Condensation is the basis by which ______ are formed both in the sky and near the ground as fog.
2. Evaporation occurs when the _______ heats up water in rivers, lakes, or the ocean and turns it into vapor or steam.
3. The Earth water cycle is responsible for all the _______ on the Earth.
4. The water in the atmosphere usually gets into the atmosphere by the way of ______.
Answer:
1. Condensation is the basis by which water droplets are formed both in the sky and near the ground as fog.
2. Evaporation occurs when the sun heats up water in rivers, lakes, or the ocean and turns it into vapor or steam.
3. The Earth water cycle is responsible for all the water on the Earth.
4. The water in the atmosphere usually gets into the atmosphere by the way of transpiration.
Explanation:
I hope this helps you:) I'm sorry if some of them are wrong... I did my absolute best.
how were the designs of pasteurs and redis experiment diffrent
How are lysosomes and vacuoles the same? How are they different?
Answer:
Vacuole is a cell organelle which contains mainly water while lysosomes also cell organelle and are regarded as bags by function. Vacuoles stores the undigested nutrients while the Lysosomes are the membrane bound sacs containing digestive enzymes that breaks down large molecules.
Answer:
Vacuole is a cell organelle which contains mainly water while lysosomes also cell organelle and are regarded as bags by function. Vacuoles stores the undigested nutrients while the Lysosomes are the membrane bound sacs containing digestive enzymes that breaks down large molecules.
Explanation:
edg 2021
Help due tomorrow!!!
Answer:
approximately 5,730 years
which statement describes the cell cycle
Answer:
I think c
Explanation:
Answer:
It is C
Hope it helps ;)
What are possible products of glycolytic, or anaerobic, catabolism?
Answer:
The products of a glycolytic metabolism is lactic acid and the increase of the insulin enzyme at the plasma level.
Explanation:
Lactic acid is the product of the reaction of glucose catalysis in oxygen-deficient states such as in anaerobic activity.
Lactic acid is an acid that can be metabolized by the body, which accumulates in the muscles, and is generated once the physical activity has finished or in the last stages.
Insulin, once generating the rest of the activity, or the cessation of the action, comes into play at the plasma level and increases, in order to neoform new energy reserves (glucose) and thus prepare for the next action.
This hormone has the opposite effect to glucagon.
Diffusion is an example of
a) passive transport
b) phagocytosis
c) endocytosis
d) active transport
Explanation:
Diffusion is an example of
a) passive transport
Answer:
[tex]\boxed {\tt A. \ Passive \ transport }[/tex]
Explanation:
First, let's define diffusion.
Diffusion is the movement of particles from areas of high concentration to low concentration. This movement is also known as moving down a concentration gradient. This process of diffusion occurs without any energy.
Since it doesn't require energy expenditure, diffusion is an example of passive transport.
Therefore, the correct answer is A. passive transport.
Help due tomorrow!!
Answer:
6(carbon dioxide) + 6(water) --> Glucose + 6(oxygen gas)
The following equation is balanced.
Both have 6 carbon atoms,
both have 12 hydrogen atoms,
and both have 18 oxygen atoms.
The total magnification of a specimen viewed under a compound light microscope is determined by the power of the objective lens added to the power of the ocular lens the magnification power of the ocular lenses used the power of the objective lens multiplied by the power of the ocular lens the magnification power of the objective lenses used
Answer:
The power of the objective lens multiplied by the power of the ocular lens
Explanation:
Answer:
c. The power of the objective lens multiplied by the power of the ocular lens
Explanation:
Scientific theories can change over time as new information is discovered. If a scientific theory changes, does this mean that it was not a good theory to begin with?
Answer:
The explanation of a phenomenon is called a scientific theory. It is a misconception that theories turn into laws with enough research