Answers
Answer:
1. B
2. C
3. E
4. A
5. D
Explanation:
1. The dependent variable is that part of an experiment that is measured when collecting data.
2. Observation involves taking notice of things with your senses.
3. The control of an experiment is the variable that is normal or remained unchanged.
4. A hypothesis is a testable prediction.
5. The independent variable is the variable that is changed.
Related Questions
A plant with narrow leaves and shallow roots would probably be found in the desert, where there is not a lot of water. Narrow leaves help prevent water loss. Shallow roots can spread out long distances in search of water.
Answers
Answer:
No.
Explanation:
The characteristic of narrow leaves is present in desert plants but shallow roots are not present because water is not available in the upper layer of soil due to faster leaching of water. Desert plants have deep root system which helps them to extract water from the deep layers of soil. Narrow leaves prevent transpiration of water from the plant body which helps the plant to store more water inside its body and remain turgor.
the phase where replicated chromosomes line up in the middle of the cell in meiosis
Answers
Answer:
metaphase
Explanation:
I don't know if you mean mitosis or meiosis, but in mitosis, it's metaphase
Animators use evidence collected from the crime scene to recreate the crime, illustrating the sequence of events and proposing theories as to what might have happened. This form of evidence is _____.
a. produced by forensic artists and photographers
b. usable in place of crime scene photographs
c. demonstrative evidence
d. tangible evidence
Answers
Answer:A
Explanation:
Animators are the person that develops the images and the visuals. The scenes of the crime are used and produced as evidence by forensic artists and photographers. Thus, option a is correct.
What is forensics?Forensics is the field of science that uses techniques and tools to detect the evidence for the crime. They employ the use of laboratory techniques and methods to find the criminal and the facts about the victim.
The forensic artists and photographers recreate the circumstances of the crime scene and collect the evidence to reach the conclusion about the criminal.
The demonstrative evidence is based on the illustration of the scene to recreate the crime and aids in understanding and analyzing the situation.
Therefore, option a. forensic artists and photographers recreate the crime scene.
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Learning Task 2 Write the word true or false if the statement is correct and if false change the underline word or words to make a statement correct
Answers
Complete question:
Write the word TRUE if the statement is correct and if FALSE change the underlined word or words to make the statement correct.
_______1. A molecular group consisting of a sugar molecule, a phosphate group and a nitrogenous base is a nucleic acid.
_______ 2. In a DNA molecule, a base pair would be composed of adenine and guanine.
_______ 3. Cytosine and adenine are purines.
_______ 4. During the replication of DNA, bonds are broken between the phosphate groups.
_______ 5. RNA contains the nitrogenous base uracil.
_______ 6. There are 20 different amino acids in a cell.
_______ 7. The coded message carried by messenger RNA is translated into polypeptides at organelles called chloroplasts.
_______ 8. The decoding of a messenger RNA message into a polypeptide chain is known as translation
_______ 9. A severe mutation may lead to cell death and may have no effect on the body.
_______ 10. Most mutation are harmful.
Answer:
FalseFalseFalseFalseTrueTrueFalseTrueTrueFalseExplanation:
_False_1. A molecular group consisting of a sugar molecule, a phosphate group, and a nitrogenous base is a nucleic acid.
Nucleotides: subunits or monomers composed of a sugar molecule, joined with a phosphate group and a nitrogenated base. The chain or sequence of nucleotides composes the polymer. Different nucleotides joined by their extremes compose the nucleic acid: DNA or RNA.
A molecular group consisting of a sugar molecule, a phosphate group, and a nitrogenous base is a nucleotide.
_False_ 2. In a DNA molecule, a base pair would be composed of adenine and guanine.
In the DNA molecule, Adenine (Purine) always pairs with Timine (Pyrimidine), while Guanine (Purin) pairs with Cytosine. A-T pair is united by 2 hydrogen bonds, and the G-C pair is united by 3 hydrogen bonds.
In a DNA molecule, a base pair would be composed of adenine and timine, or In a DNA molecule, a base pair would be composed of cytosine and guanine.
_False_ 3. Cytosine and adenine are purines.
Nitrogenated bases that form nucleic acids correspond to purines and pyrimidines. Adenine and guanine derive from purines, while Thymine and Citocine derive from Pyrimidines.
Guanine and adenine are purines.
_False_ 4. During the replication of DNA, bonds are broken between the phosphate groups.
During the replication of DNA, bonds are broken between the hydrogen groups.
_True_ 5. RNA contains the nitrogenous base uracil.
Instead of Timine, RNA contains uracil that pairs with adenine.
_True_ 6. There are 20 different amino acids in a cell.
_False_ 7. The coded message carried by messenger RNA is translated into polypeptides at organelles called chloroplasts.
When mRNA leaves the nucleus, meets a free ribosome in the cytosol. Into this organelle, it starts the protein building. Ribosomes read the mRNA code and begin protein synthesis by adding the correct amino acid using transference RNA.
The coded message carried by messenger RNA is translated into polypeptides at organelles called ribosomes.
__True__ 8. The decoding of a messenger RNA message into a polypeptide chain is known as translation
__True__ 9. A severe mutation may lead to cell death and may have no effect on the body.
_False_ 10. Most mutation are harmful.
A mutation is a change or alteration in DNI sequences that introduce new variants. Many of these are eliminated, but most of them might succeed and be incorporated into each individual. These mutations are the ones that have been selected by natural selection, leading to evolution.
Most mutation are not harmful
Based on structure, DNA molecules are composed of nucleotides and mutations in DNA are mostly harmful.
What is DNA?DNA refers to sequences of nucleotides which contain the genetic information of organisms.
Nucleic acids are chains of nucleotides.
Nucleotides are molecular group consisting of a sugar molecule, a phosphate group and a nitrogenous base.
Four nucleotides are present in DNA and they include:
adenine guanimecytidine andthymidineIn a DNA molecule, a base pair would be composed of adenine and guanine is false because adenine bonds to thymine, while guanine bonds to cytidine
Cytosine and adenine are purines is false because cytosine is pyrimidine while adenine is a purine
During the replication of DNA, bonds are broken between the phosphate groups is false because the bonds broken are hydrogen bonds.
RNA contains the nitrogenous base uracil is true as uracil is found in RNA in place of thymine in DNA.
There are 20 different amino acids in a cell is true as these amino acids are found in proteins.
The coded message carried by messenger RNA is translated into polypeptides at organelles called chloroplasts is false because protein synthesis occurs at the ribosomes.
The decoding of a messenger RNA message into a polypeptide chain is known as translation is true.
A severe mutation may lead to cell death and may have no effect on the body is false because mutations can cause death of organisms.
Most mutation are harmful is true because only free mutations are beneficial.
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Energy is produced in the cores of main sequence stars when?
A) lighter elements undergo fusion into heavier elements
B) heavier elements undergo fusion into lighter elements
C) cosmic background radiation is absorbed
D) cosmic background radiation is released
Answers
Answer: A
Explanation:
The fusion between 4 hydrogens (H) nuclei into a helium (He) atom releases the energy in main-sequence stars. In the Sun, it produces by proton-proton chain reactions.
Energy is produced in the cores of main-sequence stars when lighter elements undergo the fusion into heavier elements (Option A)..The proton-proton (p–p) chain occurs in stars that have a core temperature of less than 15,000,000 Kelvin degrees.The p--p chain consists of three (3) reactions that convert six (6) protons into a He nucleus with 2 residual protons. This process releases energy.In conclusion, energy is produced in the cores of main-sequence stars when lighter elements undergo the fusion into heavier elements (Option A).
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what do Birds and crocodiles share
Answers
Answer:
much in common!
Explanation:
Birds, crocodiles and dinosaurs have much in common – including, it turns out, their breath. The hyper-efficient breathing system of birds is shared with alligators, and probably evolved in archosaurs, the common ancestor of crocodilians, birds and dinosaurs.
What states of matter can atoms come in?
Answers
Answer:
So atom is neither a solid, a liquid nor a gas. It's just a wave with a certain amount of energy. ... So , atoms cannot have any state because their arrangement in a matter is responsible for its physical state.
Explanation:
Answer:
solid ,liquid, gas
Explanation:
solidsliquids gas3. One difference between sexual reproduction in plants and animals is that in plants, sex cells
Answers
Answer:
However, plants are also able to reproduce asexually
Explanation:
Which environmental factor would cause the greatest decrease in the number of species of plants and animals living in some of the lakes in the United States
Answers
Answer:
Which environmental factor would cause the greatest decrease in the number of species of plants and animals living in some of the lakes in the United States is acid rain
Acid rain refers to the precipitation of acidic components from the atmosphere to the Earth's surface. Some of the most common acidic components are sulfuric acid and nitric acid.
The ACID RAIN is the environmental factor that causes the greatest decrease in the number of species of plants and animals living in lakes in the USA.The negative ecological effects of acid rain are higher in aquatic environments (e.g., streams and lakes) than in terrestrial environments.In aquatic environments, it has been shown that acid rain decreases biodiversity by changing the pH level of lakes and streams.Acid rain can directly or indirectly affect different aquatic species (both plants and animals), thereby distorting the food chain and thus altering all trophic levels.In conclusion, ACID RAIN is the environmental factor that causes the greatest decrease in the number of species of plants and animals living in lakes in the USA.
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A planet's gravity is related to which of the following?
mass and size
orbit
weight and density
surface area
Answers
Depending on the size, mass and density of the object, the GRAVITATIONAL force it exerts varies
xxx
The gravity of a planet is related to its mass and size. So, the correct option is (A).
What is Gravity?Gravity is a fundamental interaction caused by the mutual attraction between all things that have mass or energy. The force of gravity keeps all the planets in orbit around the Sun.
It is a property of matter where all the matter is attracted to all other matter. The more matter there is, and the closer the objects are to each other, the greater the force of attraction and unlike electricity and magnetism, which can either repel or attract, gravity always pulls things together.
The magnitude of gravity depends upon the mass of each object and the distance between the centers of the two objects along with the he weight of an object is determined by the pull of gravity on it.
Thus, the gravity of a planet is related to its mass and size. So, the correct option is (A).
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Which of the following best describes what habitat destruction, overpopulation, pollution, climate change, and the
introduction of invasive species are affecting?
A biodiversity
B the water cycle
C global warming
D the stratosphere
Answers
Answer:
biodiversity
" the variety of life in the world or in a particular habitat or ecosystem."
Explanation:
If a butterfly has pollen on its legs where would the pollen need to be deposited for pollination to result
Answers
Answer:
Stigma
Explanation:
For pollination to occur, when a butterfly having pollen on the legs lands on flowers, the pollen needs to be deposited on receptive surface of pistil called stigma. There the pollen germinates and make a pollen tube which then reaches down to the ovules through pistils.
What is one effect the hydrosphere has on the lithosphere 1).Erosion of rocks 2).Evaporation of water 3).Heating of the core 4).Melting of the core
Answers
Answer:
1).Erosion of rocks
Explanation:
Erosion of rocks has effect of hydrosphere on the lithosphere. When the river and streams passing through a region, the water eroded the rocks that comes in their way with the passage of time as well as the bank of the rivers. The speed of erosion depends on the speed of the flow of rivers because speedy flow of rivers causes fast erosion of rocks so we can say that the erosion is the main effect of hydrosphere on the lithosphere.
Which statement best describes the relationship between an allele and a gene? hint - height has alleles of tall or short...
Answers
Answer:
See the answer below
Explanation:
A gene is made up of a pair of alleles that can be the same or different. When a gene is made up of the same allele, such gene is said to be homzygous and an individual is said to be true-breeding for that gene. When a gene is made of different alleles, such a gene is said to be heterozygous.
An allele, on the other hand, represents the alternate form of a gene. For example, height can be tall or short. Tallness represents one allele while shortness represents another allele. When the two alleles for a height are tall or short, it is homzygous, when it consists of one tall and one short allele, it is heterozygous.
Which condition is least likely to be passed on genetically?
A.)autism
B.)cancer
C.)heart disease
D.)sickle cell anemia
Answers
Answer:
The answer would be Sickle cell anemia
Help me right now! Write an explanation of the benefits/ harmful uses of Zebra Mussel
Answers
Answer:
Zebra mussels negatively impact ecosystems in many ways. They filter out algae that native species need for food and they attach to--and incapacitate--native mussels. Power plants must also spend millions of dollars removing zebra mussels from clogged water intakes.
Explanation:
A plant growing in a pot is more likely to be affected by a shortage of minerals than a plant growing in a garden.
Give the reason for this.
Answers
Explanation:
Because there is a limited amount of compost with a limited amount of minerals. In the garden there is loads of soil and loads of minerals. because of decomposition and absorption minerals can easily be replaced in the garden soil, unlike in a plant pot.
Explain the following term - cellular respiration
Answers
Answer:
Answer Below V
Explanation:
Cellular respiration is a series of metabolic activities and processes that occur within organisms' cells to transform chemical energy from oxygen molecules or nutrients into adenosine triphosphate (ATP) and then release waste products.
16 Which temperature and moisture conditions
describe an air mass that originates over the
Atlantic Ocean near the equator?
(1) warm and dry (3) cool and dry
(2) warm and humid (4) cool and bumid
Answers
Answer:
Questions Answer-warm and humid
3. Which of the following chemical reactions produces the initial food required
for all life on Earth?
Answers
Which of the following terms refer to the total number of different species, including humans, on Earth or in an area? (Choose all that apply)
biodiversity
species richness
species diversity
biosphere
Answers
Answer:
species richness and biodiversity !
Explanation:
The term refers to the total number of different species, including humans, on Earth or in an area, is the biosphere. The correct option is D.
What is a biosphere?A biosphere is a place where all plants, animals, and other living factors live. It is the place where all the conditions are present to survive and live. It contains proper temperature, oxygen, and pressure. Likewise, it is the only sphere where life is possible.
Species are organisms that can reproduce with each other. They have the same characteristics and may have differences between males and females.
There are seven spheres present, in which living things can survive in the biosphere only. The area where the roots go and the upper area, where the flying objects can go, comes under the biosphere.
Thus, the correct option is D, the biosphere.
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Fossils usually form in which type of rock?
a. metamorphic
b. igneous
c. sedimentary
d. All of these commonly contain fossils.
Answers
Answer:
Sedimantry
Explanation:
I hope this helps!
The Holocene Epoch is the current ICE AGE.
Answers
Answer:
no.
Explanation:
If you purchased avocados that were considered under ripe, where would you store
them to speed up the ripening process?
Answers
To speed up the avocado ripening process we recommend placing unripe avocados in a brown paper bag with an apple or banana for two to three days until they are ripe.
Answer:
you should store it in a brown paper bag with an apple or banana for two to three days. pls mark me branliest
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Look at the rock strata to the right. In what type of environment would the oldest
fossil in this diagram have formed?
a. ocean bottom
b. dense rainforest
C. desert
d. volcano
Answers
it’s a sea shell! these r typically found in the ocean
Translate the DNA sequence into a protein: TAC GGC GCT ACT
Answers
Answer:
amino acids
Explanation:
Answer:
amino acids
Explanation:
Photosynthesis takes place in __(1)__in the __(2)__. Celluar respiration takes place in __(3)__ in the __(4)__. *
Answers
2: mitochondria
3: mitochondria
4: cells
from what I’ve researched
Explain the differences in thermal energy and temperature when an
object changes from a solid to a liquid and from a liquid to a gas. *
Answers
Answer:
solid to liquid is: melting
while liquid to gas: sublimation
Which statement about AMP and energy is true? 1. AMP releases energy as it makes ATP 2.AMP absorbs energy when it breaks bonds 3.AMP releases energy when formed 4.AMP has one phosphate molecule
Answers
Answer:
The correct answer is - 4. AMP has one phosphate molecule.
Explanation:
AMP or adenosine monophosphate is the secondary messenger and major component of ATP (the cellular energy form). As suggested by the name it has only one molecule of phosphate, unlike ADP that has two and ATP where three phosphates are attached to one sugar molecule and nucleobase adenine.
AMP has the least energy in comparison to the ADP and ATP as more energy releases when bonding breaks. It is interconverted to ADP and ATP in metabolic processes.
To generate a knockin mouse, a scientist introduces to ES cells a construct with a mutant exon and within an adjacent intron, loxP sites flanking a neomycin resistance gene. What event will occur next?a. Crossing of heterozygous mice to a Cre-expressing strain.b. Homologous recombination between the mutant DNA and the corresponding gene in the mouse genome.c. Recombination between the loxP sites.d. Transplantation of cells into host blastocyst.
Answers
Answer:
b. Homologous recombination between the mutant DNA and the corresponding gene in the mouse genome
Explanation:
The Cre-lox recombination system is a versatile mammalian gene-editing tool used to produce site-specific recombination events in specific cell lines (e.g., embryonic stem or 'ES' cell lines) by facilitating the integration of a circular molecule in genomic DNA. This system makes use of a Cre recombinase enzyme from bacteriophage P1 that has the ability to recombine specific sequences referred to as Lox sequences. By using this system, it is possible to generate knockout mice by crossing a strain of mice expressing Cre recombinase strain with a targeted loxP-flanked (floxed) mouse strain. The generation of a floxed mouse consists of 1-generation of a targeting construct containing homologous sequences with the mouse genome and loxP sites flanking the gene sequence of interest, and 2-homologous recombination of the targeting construct with the endogenous target gene sequence in the mouse genome.