A scientist is designing an investigation to find out what is the amount of light that a plant receives is related to how much food the plant has to help it grow. For her experiment, the scientist plans to get one plant only one hour of light per day another plant five hours of light per day and a third plant 10 hours of light per day. Then she will use a roller to measure how much each plant grows each day. The set up for her experiment is shown below. Which of the following will help make sure that the investigation is a fear test?
a. Use the three different types of lightbulbs.
b. Give the plants with less light more fertilizer.
c. Give each plant the same amount of fertilizer.
d. Use three different types of plants.
Answers
Answer:
c
Explanation:
two find the effect of a variable ,which is light in this experiment, all the other conditions should be fixed
Related Questions
Scientists often classify organisms into two
categories, known as generalists or specialists. or The generalists have wider
range of habitats in which they can survive. They have a broader niche in their community.
Specialists have a much
narrower range and cannot tolerate changing conditions as well. They have very specific plants or animals that make up or
theit diet. Understanding whether an
habitats in which it is found.
organism is a generalist or a specialist can help protect the organism or the
Based on
Es
the passage, what would make a scientist classify an invasive plant species as
generalist rather than a specialist?
A)
The scientist has infers that all generalists are plants and all
specialists are animals.
B)
The scientist has observed that the
invasive plant can survive in a
wide range of conditions, making it successful in many habitats.
C
The scientist has observed that the
invasive plant is consumed by a
wide range of herbivores, making it a food source for many species.
D)
The scientist has observed that the invasive plant produces larger
flowers than other plants in the area, making it successful at
reproduction.
Answers
Answer:
b
Explanation:
this is because Invasive species are frequently generalists in terms of food, or habitat needs, have fewer predators in their introduced environments and are better able to exploit disturbances than their native competitors.
PLEASE HELP. write an argument (3 to 8 sentences) that concludes there is natural selection occurring. Specify which type of selection is occurring, based on your argument.
Answers
Another example of natural selection is the evolution of beak size and shape in Darwin's finches. In times of drought, the availability of seeds decreases, and larger, tougher seeds become more common. In response, finches with larger, stronger beaks are better able to crack open these seeds and survive, while those with smaller, weaker beaks are less successful. This is an example of disruptive selection, where extreme forms of a trait are favored over intermediate forms.
There you go
Please help me with this
Answers
Answer:
C. One amino acid would change due to a substitution.
Explanation:
The amino acid sequences before and after the mutation are given at the top. The one on the left has the codon CAG while the one on the right has the codon CGG. The rest of the sequences are identical to eachother. This is a subsitution mutation, as only one letter changed.
Using the codon chart, you can see that CAG would make the amino acid Glutamine, while CGG would make the amino acid Arginine. Therefore, the answer is C.
Which of the following happens when the polar ice caps melt?
A. sea level rise
B. sea level fall
C. tectonic plates move
D. headlands become valleys
Answers
Ik bc ik
Describe the mechanism of glycolysis in detail
Answers
The process of Glycolysis is a catabolic process in which two molecules glucose goes through a ten- step pathway and yield two molecules of pyruvate . It is a major part of carbohydrate metabolism .
Mechanism Of Glycolysis
The glycolysis is also known as EMP pathway and it is involved in both aerobic and anaerobic conditions .There are two phases in the mechanism of glycolysis in which 5 reactions takes place in each phase and the process of glycolysis takes place in cytosol
Preparatory phase refers to the generation of two molecules of glyceraldehyde 3-phosphate from one molecule of glucose which further goes into the payoff phase . In this phase two molecules of ATP are used and two regulatory enzymes were involved in this reaction .
Payoff phase refers to the further break down of two molecules of glyceraldehyde3-phosphate to two molecules of pyruvate . In this phase four molecules of ATP and two molecules of NADH are generated . In this phase only one regulatory enzyme is involved which is the breakdown of PEP to pyruvate .
Both the phases of glycolysis takes place in the cytoplasm and there are three enzymes that involved in regulating the glycolytic pathway .This process is also known as the catabolic process .
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If you observed that the Sun did not set during an entire 24-hour period of time during the summer months of June, July, and August, where are you most likely located?
South Pole
a location in the mid-latitudes
North Pole
near the Equator
Answers
Sun did not set during an entire 24-hour period of time during the summer months of June, July, and August, you are most likely located at the North pole.
The sun does not set above this latitude during the summer because of the Arctic Circle Phenomenon. The Arctic Circle is a fictitious boundary. The Arctic Circle's North Pole experiences extended periods of continuous sunshine, mostly in the months of June, July, and August. The reason for this is that Earth's axis is slanted by 23 degrees, and during the summer months when it rotates, the North Pole aligns with our star. For instance, the farthest reaches of Norway.That is why during the summer months of June, July, and August, the Sun did not set for a full 24 hours.
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as a child, alex was short for his age. but during his teenage years, his height increased and he surpassed most of his friends. What must have occurred to create his growth spurt?
Answers
During Alex's teenage years, his growth spurt was likely triggered by the onset of puberty. This is a natural process in which significant physical and hormonal changes occur, leading to rapid growth and development in adolescents.
Puberty is a stage of development characterized by various hormonal changes that impact physical growth and maturation. During puberty, the body undergoes significant transformations, including the growth of skeletal bones, muscle development, and changes in body composition.
These changes are primarily influenced by the release of hormones such as growth hormone and sex hormones (such as testosterone in males and estrogen in females).
In Alex's case, it is likely that his initial delay in growth during childhood was due to a slower or delayed onset of puberty compared to his peers. However, once he entered his teenage years and experienced the hormonal changes associated with puberty, his growth spurt occurred, allowing him to catch up and even surpass his friends in height.
It's important to note that the timing and extent of growth spurt can vary among individuals, influenced by genetic factors, overall health, and nutrition.
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i need an answer asap my exam is tomorrow
I solved the first three pls answer the rest
fill in the blanks:
When muscles of the stomach contract, food is broken down_____________________.
The stomach produces _____________________ that break down the food chemically.
Digestion of food is completed in the __________________________. Digestive juices
produced by the liver and the ________________ allow the __________________
digestion of food. Nutrients are now ready to be absorbed into the ________________.
Answers
second last ans is push the mixture forward which allow the further digestion.
last one's ans is bloodstream
Which type of replication error would be most likely to result in gene
variation among organisms?
Answers
In general, bacterial cells are prokaryotic. Which cells are eukaryotic?
• animal and plant cells
• bacteria cells
Answers
They just said bacterial cells are prokaryotic.
And animal + plants cells have nuclei.
the membrane potential becoming more positive in value is called blank whereas, blank refers to the membrane potential becoming more negative than the resting membrane potential.
Answers
The membrane potential becoming more positive in value is called depolarization whereas, hyper-polarization refers to the membrane potential becoming more negative than the resting membrane potential.
What is membrane potential?A potential gradient known as membrane potential causes ions to passively migrate in one direction: positive ions are drawn to the "negative" side of the membrane, while negative ions are drawn to the "positive" side.
The unequal distribution of ions (charged particles) inside and outside the cell, as well as the membrane's varying permeability to various ions, influence the resting membrane potential.
The equilibrium potentials of the ions to which the membrane is permeable are represented by the membrane potential. An ion's ability to carry electricity determines how much it will affect a cell's membrane potential.
So, the membrane potential becoming more positive in value is called depolarization whereas, hyper-polarization refers to the membrane potential becoming more negative than the resting membrane potential.
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Sex-specific pheromones are used for communication in non-human mammalian species like rats, and are detected by:the olfactory epitheliumthe dentate gyruspapillaethe vomeronasal organ (VNO)
Answers
Pheromones are mostly detected by sensory neurons in the vomeronasal organ (VNO), a bilateral tubular structure in the anterior region of the nasal cavity.
Answer: the vomeronasal organ (VNO)
two example of epidemic diseases
Answers
Answer:
1) Chikungunya
2) Cholera
Explanation:
Answer:
1. Whooping cough
2. Smallpox
Explanation:
Low lying areas in watersheds are at increasing risk of flash flooding. Explain why this is happening.
Answers
Answer:
The runoff threshold is the amount of effective precipitation of a certain duration that falls on the basin and is sufficient to cause shallow conditions at the outlet of the basin.
Explanation:
Flooding is a temporary water cover
land that is not usually covered by water.
* This includes floods that cause:
◦ Rivers
◦ Mountain streams
◦ Torrential watercourses
◦ As well as floods caused by the sea on the coast
areas
What is the ratio of hydrogen and oxygen in all carbohydrates when compare to carbon ____hydrogen: _____oxygen
Can anyone tell me this ?
Answers
Answer:
n(C1H2O1)
Explanation:
Think of glucose, which is C6H12O6. In the case of glucose, n would be 6.
SOMEBODY PLS HELP !!
Which statement describes what is happening at the plate
boundary in this section of a tectonic map?
A) The seafloor is spreading.
B) Two continental plates are colliding.
C)An oceanic plate is subducting.
D) Two plates are sliding past each other.
Answers
The sea floor is spreading is the correct option. Deep ocean trenches, volcanoes, island arcs, undersea mountain ranges, and fault lines are examples of plate tectonic characteristics.
Describe the earth's crust:The Earth's outer crust (the lithosphere) is made up of tectonic plates that move on top of a heated, moving mantle layer known as the asthenosphere. Convection currents created by heat in the asthenosphere lead tectonic plates to shift several millimeters each year relative to one other. A "plate border" is formed when two tectonic plates collide. There are three main types of plate borders, each of which is related with the production of different geologic characteristics.
When is a convergent boundary formed?A convergent plate boundary is formed when two tectonic plates clash. Subduction is the process by which one of the converging plates moves beneath the other.
Deep trenches are frequent structures generated where tectonic plates are subducted, and earthquakes are also prevalent near subduction zones. Fluids are released from the rock when the sinking plate goes further into the mantle, causing the overlying mantle to partially melt. The new magma (molten rock) rises and may erupt violently to generate volcanoes, which frequently form arcs of islands along the convergent boundary.
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What genotypic ratio is expected in a cross between two heterozygous parents (Pp x Pp)?00003 purple: 1 white2 purple: 2 white1:2:11:3
Answers
In a cross between parents heterozygous in a monohybrid cross, the ratio of the offspring will be:
3:1 for phenotypic trait, and for genotypic 1:2:1 (PP-Pp-Pp-pp) using the Punnett Square. Being two heterozygous, one homozygous recessive, and one homozygous dominant and two observed phenotypes.
Look at the data in the table to the right. Then, answer the question that follows.
Based on the data in the table, what conclusion can you draw about the energy needs of different cells?
All cells need the same amount of energy.
Skin cells use more energy than muscle cells.
Cells that need more energy, like muscle cells, have more mitochondria.
Cells that have more mitochondria are larger than other types of cells.
A 2-column table has 4 rows. The first column is labeled Cell type with entries typical animal cell, skin, muscle, liver. The second column is labeled Number of mitochondria with entries 1,000 to 2,000, 200, greater-than 2,000, greater-than 2,000.
Answers
Answer:
The correct answer is: C.
Muscle cells require more energy for contraction than any other cell. Hence, option C is correct.
What are mitochondria?The majority of the chemical energy required to drive a cell's metabolic operations is produced by mitochondria, which are membrane-bound cell organelles (mitochondrion, singular). Adenosine triphosphate, a tiny molecule, serves as a storage container for the chemical energy generated by the mitochondria (ATP).
It generates ATP through the process of oxidative phosphorylation. Small chromosomes found in mitochondria are found there. In most cases, mitochondria and consequently mitochondrial DNA are exclusively passed down from the mother.
Muscle cells contain a large number of mitochondria because they require more amount of energy for contraction. Hence, option C is correct.
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A woman is a carrier for colorblindness (XcXc)and her husband has normal vision (XcY). Is it
possible for one of their children to be colorblind? If so who? Use a Punnett square to back up
(ignore my work I’m trying to figure it out please help)
your answer.
Answers
Answer:
There will be one Male affected child. ( XcY)
Which of the following is the correct path of blood through the circulatory system?
A blood enters chamber, valve closes off the blood vessel, the heart contracts and pushes the blood forward
B
the heart contracts, blood enters chamber, valve closes off the blood vessel and pushes the blood forward
с
The heart relaxes and pushes forward the blood, blood enters chamber, and the valve closes off the blood
.
D
blood enters the chamber, valve closes off the blood vessel, the heart relaxes and the blood pushes forward
Please hurrryyyy
Answers
Which protist is characterized by a pseudopod?
Answers
Answer:
if you're taking the unit test the answer is sarcodine
Explanation:
Compare how the wave shape changed with the information and diagram above. As the band continues to be stretched, what color is the wave shape becoming closer to?
Answers
Please help me with this to fill in the black correct answers. This is specifically anatomy and physiology science
1. The reproductive system has both endocrine and exocrine functions. The exocrine function is stimulated by this hormone produced in the anterior pituitary______ and produces this in the female _____.
2. The endocrine function is stimulated by this hormone in the anterior pituitary_____ and produces this in the female_____
3. The reproductive system has both endocrine and exocrine functions. The exocrine function is stimulated by this hormone produced in the anterior pituitary______ and produces this in the male____
4. The endocrine functions is stimulated by this hormone in the anterior pituitary _____ and produces this in the male_____
Answers
1. The exocrine function is stimulated by this hormone produced in the anterior pituitary: follicle-stimulating hormone (FSH), and produces ova (eggs) in the female.
2. The endocrine function is stimulated by this hormone in the anterior pituitary: luteinizing hormone (LH), and produces estrogen and progesterone in the female.
3. The exocrine function is stimulated by this hormone produced in the anterior pituitary: luteinizing hormone (LH), and produces sperm in the male.
4. The endocrine function is stimulated by this hormone in the anterior pituitary: follicle-stimulating hormone (FSH), and produces testosterone in the male.
1. The exocrine function of the reproductive system in females is stimulated by the hormone produced in the anterior pituitary called follicle-stimulating hormone (FSH), which promotes the production of ovarian follicles. The exocrine product in females refers to the release of eggs or oocytes from the ovaries during ovulation.
2. The endocrine function of the reproductive system in females is stimulated by the hormone luteinizing hormone (LH) produced in the anterior pituitary. LH triggers the release of estrogen and progesterone from the ovaries, which regulate the menstrual cycle, promote the development of the uterine lining, and prepare the body for pregnancy.
3. The exocrine function of the reproductive system in males is stimulated by the hormone produced in the anterior pituitary called luteinizing hormone (LH), which stimulates the production of testosterone in the testes. Testosterone is the primary male sex hormone and is responsible for the development of male reproductive organs and secondary sexual characteristics.
4. The endocrine function of the reproductive system in males is stimulated by the hormone follicle-stimulating hormone (FSH) produced in the anterior pituitary. FSH promotes the production of sperm cells (spermatogenesis) in the testes.
Overall, the reproductive system has both endocrine and exocrine functions, with the anterior pituitary gland playing a crucial role in regulating these functions through the production of specific hormones.
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TTT 18. All of the following are chemical approaches to control micro-organism excepts: A. Antibiotics B. Disinfectants 19. The scientific name for modern man is C. Antiseptics D. Autoclaving A. Homo erectus B. Homo sapiens 20. In which of the following kingdoms are prokaryotic organisms placed? A. Fungi B. Protest C. Australopithecus D. None C. Planate D. Monera 21. Plants which have true roots, leaves, stem & seeds inside the fruit are A. Gymnosperm C. Mosses D. Ferns B. Angiosperm 22. Which of the following taxonomic groups contains closely related organisms? A. Genus C. Phylum B. Order D. Class 23. Malaria causing single celled parasitic protozoan is called A. Paramecium B. Salmonella C. Mosquito D. Plasmodium 24. Which one of the following kingdoms is consists of eukaryotic organisms such as yeast moulds and mushrooms? A. Ecosystem B. Population 26. Which of the following organism are consumers? A. Photosynthetic B. Chemosynthetic bacteria C. Green plant D. Scavengers Answer the following questions. C. Kingdom monera D. Kingdom plantae A. Kingdom fungi B. Kingdom protista 25. Ecology is a biological science that deals with all of the following except C. organism D. none
Answers
All of the options are chemical approaches to control micro-organism excepts: B Disinfectants
19. The scientific name for modern man is: B. Homo sapiens
20. kingdoms are prokaryotic organisms placed D. Monera
21. Plants which have true roots, leaves, stem & seeds inside the fruit are: B. Angiosperm
22. taxonomic groups contains closely related organisms A. Genus
23. Malaria causing single-celled parasitic protozoan is called: D. Plasmodium
24. kingdoms consists of eukaryotic organisms such as yeast, molds, and mushrooms A. Kingdom fungi
25. Ecology is a biological science that deals with except: D. none
26. The organism that are consumer is D. Scavengers
What is the chemical approaches to control micro-organismDisinfectants are special chemicals that are used to kill germs or prevent them from growing on surfaces or objects. They are not usually used to control microorganisms within living things, unlike antibiotics, antiseptics, and autoclaving, which are all chemicals used to control microorganisms.
Homo sapiens is the fancy name used by scientists to refer to regular, everyday humans This is the species that humans are a part of.
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18. All of the following are chemical approaches to control micro-organism excepts: A. Antibiotics B. Disinfectants
19. The scientific name for modern man is C. Antiseptics D. Autoclaving A. Homo erectus B. Homo sapiens
20. In which of the following kingdoms are prokaryotic organisms placed? A. Fungi B. Protest C. Australopithecus D. None C. Planate D. Monera
21. Plants which have true roots, leaves, stem & seeds inside the fruit are A. Gymnosperm C. Mosses D. Ferns B. Angiosperm
22. Which of the following taxonomic groups contains closely related organisms? A. Genus C. Phylum B. Order D. Class
23. Malaria causing single celled parasitic protozoan is called A. Paramecium B. Salmonella C. Mosquito D. Plasmodium
24. Which one of the following kingdoms is consists of eukaryotic organisms such as yeast moulds and mushrooms? A. Ecosystem B. Population
25. Ecology is a biological science that deals with all of the following except Answer the following questions. C. Kingdom monera D. Kingdom plantae A. Kingdom fungi B. Kingdom protista C. organism D. none
26. Which of the following organism are consumers? A. Photosynthetic B. Chemosynthetic bacteria C. Green plant D. Scavengers
Are natural disasters avoidable
Answers
Answer:
Natural hazards such as flooding, earthquakes and hurricanes cannot be prevented. However, there are still opportunities to reduce damage from natural hazards.
Some natural disasters can be forecasted based on past scientific data.
So if you know ahead of time of the occurence then I guess you can take precautions and avoid natural disasters wherever you live.
Explanation:
Answer: Natural disasters are inevitable and we may not be able to prevent them.
Explanation: We can work towards building a more resilent community, one that emerges from such incidents stronger than ever.
Villi in small intestine helps to increase area of absorption for minerals and nutrients.
True
False
Answers
Answer:true
Explanation:The function of the plicae circulares, the villi, and the microvilli is to increase the amount of surface area available for the absorption of nutrients. Each villus transports nutrients to a network of capillaries and fine lymphatic vessels called lacteals close to its surface.
Don’t know the concept neither do I understand this question
Answers
Chaunie - Ww - heterozygous for granting wishes
Patches - ww - homozygous for cannot grant wishes
The cross between Ww x ww will have the following genotypes:
Ww - 50%
ww - 50 %
The cross between Ww x ww will have the following phenotypes:
Ww - heterozygous for granting wishes - 50 %
ww - homozygous recessive for cannot grant wishes - 50 %
need help please.....
Answers
Answer:
1. F
2.A
3.E
4.D
5.B
6.C
Explanation:
I believe this is the correct order- forgive me if I'm wrong; The wording for options A and B are slightly confusing.
What new knowledge was gained from Frederick Griffiths work with pneumococci bacteria
Answers
Answer:The new knowledge gained from Frederick Griffith's work with pneumococci bacteria is that bacteria contain a physical substance that can change the structure of other bacteria. Therefore, option 3 is the correct answer.
Explanation:
Osteoporosis is a disease that affects the bones and leads to an increase in bone fractures. Osteoporosis is most likely to be affected by which cycle?
Answers
Answer:
the "remodeling cycle"
Explanation:
The remodelign cycle is when our bone cells begin to deteriorate while new bone cells form