Answer:
B. Control group
Explanation:
Control groups provide a baseline for an experimental investigation. Thus, the correct option is B.
What is an Experimental investigation?An experimental investigation may be defined as a complete set of methodology that involves the active modification of certain variables in order to test a hypothesis and gather documented evidence to support the claim.
During an experimental investigation, a hypothesis is a previously occupied knowledge that requires complete sets of evidence. While independent and dependent are variables that should be modified in order to reveal the outcome.
Control groups are those standard values or ideas that assist the experimental study of one variable at a time irrespective of any external influences.
Therefore, the correct option for this question is B.
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What is the charge of a model atom of an element
Answer:neutral change
Explanation:
Is myosin a fibrous protein or a globular protein?
Answer:
Fibrous protein
Explanation:
The definition of myosin is "a fibrous protein that forms (together with actin) the contractile filaments of muscle cells and is also involved in motion in other types of cells."
2.
5. Wh
14 Which of the following base pair sequen
could be produced in DNA replication?
دی نے
B.
C.
D.
A S'AGTCUT 3'
3' TCUGTA S'
B S'AGTCAT 3'
3' TCAGTA S'
c
5' AGTCAT 3'
3' CTGACG S'
D
S'AGTCAT 3
3' UCAGUA S'
Answer:
whew chile
Explanation:
What compound is this?
Carbohydrates
Lipids
Nucleic acids
Proteins
Answer:
Nucleic acids.
Explanation:
Extremely helpful Bio mnemonics to remember are:
Carbohydrates & Lipids - CHO
Proteins - CHON
Nucleic acids - CHONP
Because of the "CHONP" mnemonic, I was immediately able to recognize the compound as a nucleic acid after seeing the "P", which represents phosphorous.
Carbohydrates, lipids, nor proteins will include "P"; only nucleic acids.
Can you help me please I’ll give you a Brainly list and it’s science
Answer:
It's a,b,or c
Explanation:
never did that bruh but if you get it wrong im sorry but if not good job
Answer:
the answer is B
Explanation:
Why is it important to participate in global economy
Answer:
It's important to participate in the global economy because there are many benefits to it such as free trade, increased investment, and increased economies of scale. The developments occurring throughout our global economy are crucial because it has allowed for working with other countries to make the most of the good and services, and in turn allowing a strong economy to be formed.
Explanation:
Answer:
Becasue it brings benefits to people
Explanation:
Which of these planets is Earth? Explain your answer.
Answer:
It's planet B
Explanation:
It has oxygen and everything needed to live and the temperatures are liveable for humans. 78% nitrogen, 21% oxygen, 1% other. Also according to the table, planet B is 1 AU from the Sun and the atmospheric pressure on the planet’s surface is 1 bar. Also, the planet’s atmosphere contains oxygen, which is essential for life. These are the properties of Earth. So, planet B is Earth.
Which of the following statements is True
Prokaryotic cells came before Eukaryotic cells.
Prokaryotic cells are bigger than a Eukaryotic cell.
Eukaryotic cells are simple; Prokaryotic cells are complex.
Eukaryotic cells do not have a nucleus. Prokaryotic cells do.
Answer:
Explanation:
Prokaryotic cells came before Eukaryotic cells.
Trust me other all are false.
Prokaryotic cells came before Eukaryotic cells.
What is in a prokaryotic cell?
All prokaryotic cells have a nucleoid region, DNA and RNA as their genetic cloth, ribosomes that make proteins, and cytosol that incorporates a cytoskeleton that organizes cell substances. But, prokaryotic organisms are a very numerous organization of organisms and are available in many special shapes and sizes.
What are 4 examples of prokaryotic cells?The examples are:
E. coli (Escherichia Coli Bacterium)Corynebacterium diphtheriae.Bacillus anthracis.Bacillus cereus.Learn more about Prokaryotic cells here: https://brainly.com/question/5716507
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Jason wanted to find out how he could increase the number of popcorn kernels that pop when cooked. He hypothesized that more kernels would pop if he used more oil. To test this, he placed 100 kernels of “Pop Rite’ popcorn into a popcorn popper that contained different amounts of oil. He used the following amounts of oil: 5 mL, 10 mL, 15 mL, 20 mL, and 25 mL He conducted the test 3 times for each amount of oil. He then counted the number of kernels that had popped. Each time he heated the oil for 2 minutes and cooked the popcorn for 4 minutes.
Answer:
This question is incomplete, it is asking to identify the following variables in the question:
Independent Variable: DIFFERENT AMOUNTS OF OIL
Dependent Variables: NUMBER OF KERNELS THAT POPPED
Controlled Variables: TIME FOR POPPING, SAME BRAND OF KERNEL, SAME COOKING TIME
Explanation:
The independent variable of an experiment refers to the variable that the experimenter intentionally manipulates or changes for the purpose of effecting a measurable response in another variable (dependent variable). In this experiment, the independent variable is DIFFERENT AMOUNTS OF OIL used because this is what Jason changes in the experiment.
Contrarily, the dependent variable is the variable that the experimenter measures in response to the independent variable. In this experiment, Jason measures the NUMBER OF KERNELS THAT POPPED from using different amounts of oil. Hence, the NUMBER OF KERNELS THAT POPPED is the dependent variable.
Controlled variables or constants are those variables that must be kept constant or unchanged throughout the experiment in order not to influence the findings of the experiment. In this case, the following variables were kept constant for all the groups: TIME FOR POPPING , SAME BRAND OF KERNEL (Pop rite), SAME COOKING TIME (4 mins).
Coloration in mockingjays is determined by a single gene. The G allele leads to grey colored feathers and the g allele leads to all white feathers. If two heterozygotes are crossed, what would be the phenotypic ratio in the F1 progeny? What would be the genotypic ratio in the F1 progeny
Answer:
F1 genotype = 1: 2: 1
F1 phenotype = 3:1
Explanation:
given data
G = allete for grey colour feather
and
g = allele for white colour fether
and
Gg = genotype of heterozygotes
we do here cross of two heterozygotes that is
parantal generation Gg × Gg
⊥ ⊥
G g G g
gametes ⇒ F1 generation
F1 genotype = 1: 2: 1
F1 phenotype = 3:1
Name one way that water moves in the oceans, above ground, and below ground. Thanks! (I might know, but I can't think of it right now)
Gastrin secretion in response to elevated ph within the stomach is an example of:__________.
Answer:
It is an example of enzyme activation through the pH of the environment surrounding the enzyme.
This phenomenon is called proenzyme, proenzymes are inactive enzymes that, due to chemical changes in the environment that vary, are activated or not depending on these.
Explanation:
Proenzymes, generally the best known or named, are found in the digestive system, where the sequential digestion of food is essential, with an order, and the enzymes must be controlled or activated at certain moments of digestion.
Proenzymes can be activated by the presence of chemicals, pH acids and even pH alkalinity, the change of the medium is what gives the enzyme permission to start with its reaction effect.
Usually this happens with enzymes that must be controlled, and that their activity must be in certain periods so as not to generate pathologies or even destroy a tissue of the organism.
What do all cells need in order to perform cellular respiration?
Answer:
Oxygen I believe
Explanation:
Answer:
energy (sunlight), water glucose and oxygen!
Explanation:
They need all of these to preform photosynthesis so they can get energy in order to survive!!
please help me, and be quick
Independent variable is mass of the bob
Dependent variable is period
Control is amplitude
Research Problem: You come across three new species of primates that all cohabitate the same forested area. No one has looked at the behavior of these monkeys before so there is lot to discover about each species. You and a fellow researcher are interested in describing the diet of each of these species (Do they eat fruits? Leaves? Insects? Tree-sap? A combination of sorts?). Your fellow researcher has determined that her hypothesis is that two of the monkeys primarily eat fruit, while one of the monkey species eats tree sap.
Answer:
there are three different species.
Explanation:
There are three different species of monkey according to the hypothesis because all monkey species have different feeds i. e. one feed on the fruits while the other feed on the tree sap. It also shows that two monkey species have same feed i. e. eating fruits while one specie feeds on tree sap. This hypothesis also shows that no specie of monkey feeds on leaves and insects present on the trees.
In most cases What happens to a liquid when it cools
Answer:
it evolve heat to surrounding
Answer:
Density Increases, its Mass Decreases, Its Volume Increases.
Explanation:
In Glass 1, Jason mixed apple juice and water and let it stand for five minutes. The apple juice and water stay mixed together. In Glass 2, Jason
mixed water and oil and let it stand for five minutes. The water and oil separated to form layers.
Oil
Apple Juice
and Water
Water
Glass 1
Glass 2
Which will most likely happen if Jason mixes oil with apple juice in a glass?
O A. A layer of oil will form below the apple juice.
OB. A layer of oil will form on top of the apple juice.
O c. The oil and the apple juice will stay mixed together.
OD. The apple juice and oil will react to form a new substance.
How the need for energy is the driving force of the oxygen cycle?
Answer:
All living organisms need energy to grow and reproduce, maintain their structures, and respond to their environments
Explanation:
which combination of the state and a substance in that state is correct
Answer:
Change of state of matter: In physics, we call the process of changing matter from one state to another state as change of state of matter. They can be transformed into each other, so there are 6 kinds of physical changes: melting, solidification, vaporization, liquefaction, sublimation, and sublimation. Other states of matter such as: plasma state, super solid state, neutron state, Bose-Einstein condensed state, soft matter, etc.
Explanation:
1. State of matter: Since a large number of molecules that make up a substance are constantly performing irregular thermal motion, and different molecules perform thermal motion at different speeds, three states of matter are formed: solid, liquid, and gaseous. In science, we call the state of matter the state of matter.
2. How to judge what kind of state change is happening: The key is to find the two states of the substance before and after the change in state, and then compare them according to the definition, and then you can draw the correct conclusion.
Three states, six changes and endothermic hveat release: Physical change
Melting: solid → liquid (endothermic)
Solidification: liquid→solid (exothermic)
Vaporization: (boiling and evaporation): liquid → gas (endothermic)
Liquefaction: (two methods: compressing volume and lowering temperature): gas → liquid (exothermic) Sublimation: solid → gas (endothermic)
Sublimation: gas state → solid state (exothermic)
(Note: The "heat" of "endothermic" and "exothermic" mentioned here refers to heat, not to thermodynamic concepts such as temperature, internal energy, calorific value, and specific heat capacity. That is, "absorbed heat" and The abbreviation for "release of heat." In physics, heat cannot say "how much heat it contains" or "how much heat it has", but can only say "how much heat is absorbed" or "how much heat is released")
Which characteristics are used to differentiate among the six kingdoms?
Identify examples of direct and indirect observations.
Answer:
There are many different types of examples of direct and indirect observations.
Explanation:
Direct observations is they perform customers in a store and many bags of they purchase.
Indirect observations is they used the data cannot gathered direct and the data through to be expensive.
Direct observation is the example to the physical character like color, and body type to be directly observations.Direct observation can psychological like depression, observe behavior and make inferences based on your observations.Direct observation they interact temper and who keeps calm and that might clue their temperament,direct observations comes to the start psychological measurement.Indirect observations make the observation based on the observation of another red hair or blonde hair check mark.Indirect observations is concept systematic observation and to generated either indirectly of the verbal behavior in narratives.Indirect observations study produce data for they quantitative analysis describe they different tool available of process.Indirect observations they perform that mixed methods and verbal behavior or systematic observation.Indirect observations is they appropriate method and both verbal behavior and textual materials in the study.You have learned that humans have a total of 46 chromosomes and that chimpanzees have a total of 48 chromosomes. Use other textbooks in biological anthropology and biology (or reputable online resources) to find the number of chromosomes in other organisms. Give an organism with considerably more chromosomes than humans. Give an organism with considerably fewer chromosomes than humans. Did your findings surprise you? What did your research suggest about the relationship between chromosome number and organism complexity?
Answer:
The correct answer is included in the Explanation section
Explanation:
An organism with considerable more chromosomes than humans: the plant Ophioglossum reticulatum with 1260 chromosomes.
An organism with considerable fewer chromosomes than humans: the ant Myrmecia pilosula with 1 chromosome.
It might be thought that the chromosome number of a species is directly related to its complexity, meaning that an organism with a large number of chromosomes is more complex than an organism with a small number. However, this is not true. Chromosomes are structures of coiled DNA, and its number indicate how the cells wrapp their genomic material when they reproduce. The number of chromosomes is not related to the organism complexity, but rather the number of genes and their function.
An organ system is made up of organisms that have
Answer:
Image result for An organ system is made up of organisms that have
Humans—and other complex multicellular organisms—have systems of organs that work together, carrying out processes that keep us alive. The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems
Explanation:
The sum of the forces is calculated by?
Answer:
The sum of forces acting on a particle of constant mass is equal to the product of the mass of the particle and its acceleration; 3. The forces exerted by two particles on each other are equal in magnitude and opposite in direction.
Dynamics and Vibrations - Forces and Momentswww.brown.edu › Engineering › Courses › Notes › Forces
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Vi
Small cracks starting in the cuticle and
splitting the hair entirely are known as
brittle hair, fragilitis crinium or:
Select one:
Answer:
fragilitas crinium
Explanation:
It is a condition in which the hair of the head or face tends to split or break off.
Small cracks started in the cuticle and splitting the hair entirely is known as brittle hair, fragilitis crinium, or Trichoptilosis.
What is the technical name for brittle hair?The technical name for brittle hair is known as fragilitas crinium. The condition may be triggered by things such as blow-drying, ironing the hair, over-brushing, perming, or excessive chemical use.
In some cases, trichorrhexis nodosa is caused by an underlying disorder, including very rare ones, such as Thyroid not making enough thyroid hormone (hypothyroidism).
The cuticle is the clear outside covering of the hair shaft. It is made up of tough, overlapping scales, like those on a fish or like shingles. A splitting of the hair shaft, usually at the distal end. Probably the most common of hair shaft disorders often referred to as 'split ends'.
Therefore, small cracks started in the cuticle, and splitting the hair entirely is known as brittle hair, fragilitis crinium, or Trichoptilosis.
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The wild-type eye color in the fruit fly Drosophila melanogaster is dark red, as a result of a mixture of bright red and brown pigments. "Enzyme A" is encoded by the "a" gene, and is required to synthesize the bright red pigment. A lack of red pigment results in a somewhat brown eye color. You cross two fruit flies who are heterozygous for a recessive mutation that completely inactivates the "a" gene. What proportion of their offspring will have a recessive eye color phenotype?
Answer:
1/4 or 25%
Explanation:
Let the wild-type eye color be represented by allele A. The mutant's eye color would be represented by allele a.
The genotype of fruit flies that are heterozygous for a recessive mutation that inactivates gene 'a' ( and therefore results in mutant eye color) would be Aa.
If Aa and Aa are crossed:
Aa x Aa
progeny: AA Aa Aa aa
The proportion of the offspring that will have a recessive eye color phenotype (aa) would therefore be 1/4 or 25%.
Which protein holds the sister chromatids together? Which protein holds the sister chromatids together?
a) securin
b) Mad
c) cohesions
d) Cdc20
Answer:
The correct answer is cohesin (which is close to cohesions in the option)
Explanation:
After DNA replication, the chromosome consists of two identical (long) threadlike strands called sister chromatids. These sister chromatids are double stranded and are joined together at the centromere (in the centre by a protein complex called cohesin. The closest option to cohesin is option C.
2. Ivan and Braxton want to know if a stretching a rubber band at different lengths affects how far the rubber band will fly. They will use centimeters for all measurements. IV: DV: Hypothesis: 3. Will a paper airplane with longer wings fly farther than shorter wings?
Answer:
Independent variable: DIFFERENT LENGTHS OF STRETCHING
Dependent variable: DISTANCE RUBBER BAND FLIES
Hypothesis: IF a rubber band is stretched longer, THEN the distance it flies will increase
Explanation:
The hypothesis of an experiment is a testable explanation or suggested solution to an observed problem or asked question. In this experiment, the hypothesis can be: IF a rubber band is stretched longer, THEN the distance it flies will increase
Note that, this hypothesis can be tested to be true/untrue
Independent variable is the variable that the experimenter manipulates or changes in order to bring about a response. The independent variable in this question is DIFFERENT LENGTHS OF STRETCHING THE BAND.
Dependent variable is the variable that the experimenter measures in response to the independent variable. In this experiment, the measured/dependent variable is the DISTANCE RUBBER BAND FLIES
The specification of the anterior-posterior axis in Drosophila embryos is initially controlled by various gene products that are synthesized and stored in the mature egg following oogenesis. Mutations in these genes result in abnormalities of the axis during embryogenesis. These mutations illustrate maternal effect. What are the expected outcomes of parallel crosses involiving mutant gnes that contrast maternal effect and organelle heredity?
Answer:
It is possible to determine their functions and to identify the mechanism involved in their mode of inheritance
Explanation:
Matrilineal inheritance refers to the inheritance of genes directly from the mother, it either through the inheritance of mitochondrial DNA or by the epigenetic mechanism of genomic imprinting (in the case above indicated, maternal imprinting). By mutating genes which are inherited from the mother it is possible to study their functions as well as their mode of inheritance. By using a reverse genetics approach, many maternal imprinted genes have recently been identified to be involved in embryo development, especially in model organisms like Drosophila.
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