The figure below shows an experiment on photosynthesis. Rebecca observed that the part of the leaf outside the bottle showed the presence of starch in it. The part of the leaf inside the bottle did
not show the presence of starch. When the same experiment was repeated without potassium hydroxide (KOH) in the bottle, the whole leaf showed the presence of starch.
KOH
Water
What can Rebecca correctly infer about potassium hydroxide?
SC.912.L.18.9
It absorbs carbon dioxide.
It releases oxygen.
Ο Ο Ο Ο
It produces water
It dissolves cells.
Answers
Answer:It releases oxygen
Explanation: I took the test
Related Questions
The map shows the location of Earth's principal biomes.
Which abiotic factor in tropical forests do boreal forests lack?
Answers
Answer:
warm temperature
Explanation:
I cannot see the choices in your image. I can only see choice A, which is "soil."
"Abiotic factors" are part of the ecosystem that don't have life. However, they have an impact on the life of the biotic factors (living organisms) in the environment. Examples of abiotic factors are: sunlight, temperature, climate, soil, humidity, wind, etc.
"Boreal forests" are abundant on the Earth's Northern Hemisphere. The climate here is generally cold, which doesn't allow some trees to survive. It is totally opposite to the warm temperature and high humidity that you can feel in the "tropical forests." Such factors allow many plants and animals to survive.
Clearly, the boreal forests lack the "warm temperature" that the tropical forests have.
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What evidence does the diagram provide that humans and kangaroos have evolved from a single common ancestor? (3)
Answers
Answer:
Their backbones and chest bones are same.
If the DNA integrates properly into the germ cells, the adult fly will contain _________________ that contain _____________________________. After mating, these flies can then produce progeny that will contain ______________________.
Answers
Answer:
Five pairs of autosomal and one pair of heterochromatic sex chromosomes.
Explanation:
The adult fly will contain 12 number of chromosomes that contain five pairs of autosomal and one pair of heterochromatic sex chromosomes. After mating, these flies can then produce progeny that will contain diploid i. e. double number of chromosome. One set of half chromosomes from the male fly while the other half chromosomes comes from female fly so the offspring will receive double number of chromosomes.
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Which of your plants was a dicot? Which was a monocot? How could you tell?
PLANTS :
Sunflower
Pansies
HYdrangeas
Answers
Answer: Sunflower : Dicot, Pansies : Dicot, Hydrangeas: Monocots.
Explanation:
Within the plant kingdom, seed-bearing plants are divided into gymnosperms and angiosperms. Angiosperms are the group of plants that have flowers, within which we have monocotyledons and dicotyledons or eudicotyledons. A cotyledon is a leaf-like structure found on the seed so it is an embryonic leaf. Its function is to absorb nutrients in the seed until it develops true leaves that will allow to perform photosynthesis.
Monocotyledons are flowering plants whose seeds have one cotyledon. Dicotyledons are flowering plants whose seeds have two lateral cotyledons. Both monocot and dicot seeds have an embryo plant, a coat, and is able to store nutrients.
The true leaves monocots will be thin and long, while dicot leaves will be broad. Another characteristic is that the major veins of monocots are parallel and stripe-like while the dicot veins branch out. Also, monocots have flower parts in multiples of 3 while dicot flower parts are produced in multiples of 4 and 5. Roots in monocots sprout from many parts of the plant while dicot roots develop only from the radicle, which is the first part of a seedling to emerge during germination. This means monocots do not have secondary growth and dicots usually produce secondary growth.
Sunflower : Dicot, because it shows two cotyledons when the seed germinates.Pansies : Dicot, because it has 5 leaves. Hydrangeas: Monocots, they only have one cotyledon.is the study of how traits are passed from parents to offspring.
OA) Fertilization
O B) Genetics
O C) Seed production
O D) Selective breeding
Answers
Answer:
D) Selective
breeding
Explanation:
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Cordite required ethanol.
O True
O False
Answers
Answer:
False I believe I just went in quizzlet
Levels of Organization (Smallest to Largest)
Cell
Organ
Organism
Organ system
Tissue?
Answers
Answer:
cell,tissue,organ,organism,organ system
Explanation:
this is the correct level of organisation
Margo notices that waves start passing her more often. What can she conclude about the frequency and wavelength of the waves?
Answers
Maro concluded that the frequency is increased while the wavelength would be decreased with respect to the wave that starts passing her more often.
What is Wavelength?Wavelength may be characterized as the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.
The frequency or the energy of the wave is inversely related to the wavelength of any wave. This is because when frequency increases, wavelength (λ) decreases, and vice-versa. While the energy of the wave and frequency is directly related to one another.
Therefore, Maro concluded that the frequency is increased while the wavelength would be decreased with respect to the wave that starts passing her more often.
To learn more about Frequency and wavelength, refer to the link:
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does humans produce two types of cells
Answers
Answer:
yes
Explanation:
they are :
somatic cellgerm cellStress is a nondietary risk factor for
cancer
hypertension
osteoporosis
diabetes
Answers
I would say hypertension, I think stress can be a risk factor for this.
Answer:B
Explanation:
(60 POINTS) When an insect becomes trapped in a spider's web, the spider moves towards the insect. The spider could be alive because it displays
which sign of life?
A. information system
B. growth and development
C. response to environment
D. reproduction
Answers
Answer:
B. growth and development
Explanation:
im just guessing so i cant say for sure hope this helps tho
Answer:
B
Explanation:
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Answer and I will give you brainiliest
Answers
Explanation:
Such an offspring would have the genotype YY, which are the dominant alleles that code for yellow colour in bananas.
In the Punnett's Square, none of the offspring have YY genotype. Hence the answer is 0%.
what will happen if nondisjunction wee to take place at anaphase 2
Answers
UNDERSTANDIN
Multiple Choice
5 Which of the following is a character-
istic of all animals?
a. asexual reproduction
b. producing their own food
c. having many specialized parts
d. being unable to move
Answers
what are the main functions of the skelatal system
Answers
Answer:
The skeletal system works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals.
Explanation:
Which three statements make up the law of gravity?
O A The strength of the gravitational force between two objects
decreases as the distance between their centers increases.
B. Matter attracts all other matter in the universe.
C. No matter where you are in the universe, you will always have the
same weight
D. The strength of the gravitational force between two objects
increases as the total mass of the objects increases
Answers
A, B and D
Explanation:
Select the word or phrase that best completes each of the sentences below.
The smallest units of life are called
is the process of creating new living things.
is the phenomenon of living things responding to their environment
Answers
Answer:
1. CELL
2. REPRODUCTION
3. IRRITABILITY
Explanation:
1. All living organisms are composed of CELLS, which according to the cell theory as proposed in the 1800's is the smallest structural and functional unit of life.
2. REPRODUCTION is a characteristics possessed by all living things. It is the process whereby living organisms/things create new living things.
3. IRRITABILITY is another characteristics of living things, which is the process whereby living things respond to changes in their environment called STIMULUS e.g heat, nutrient stress e.t.c.
Particles of gas is widely seperated
True
False
Answer and I will give you brainiliest
Answers
I think
Explanation:
true is right ans
Answer:
True
Explanation:
Explain what factors can lead to genetic
variation within a population.
Answers
Answer:
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
Hope this helped :)
Earth's magnetic poles reverse approximately every _____ years?
O A. billion
B. 22
C. 10 million
D. 250,000
Answers
Answer:
D. 250,000 years
Explanation:
It's really 200,000 to 300,000 years, but 250,000 years is right in the middle, so it must be 250,000 years.
Hope this helps you! Good luck with your exam/quiz! <3
Answer:
D) 250,000 yrs.
Explanation:
Earth's magnetic poles reverse approximately every 250,000 years.
Some researchers estimate that the mutation rate for any given gene (or its DNA) in certain strains of bacteria is about 108. This means that one error or mutation in a given gene is introduced for every 100-million cell divisions. What can cause mistakes in replication
Answers
Describe Ted Bundy’s childhood and his relationship with his family.
Answers
Answer:
Bundy was born at a home for unwed mothers in Burlington , Vermont, on November 24, 1946. He remained there for two months after his birth. His mother, Eleanor Louise Cowell, known as Louise, considered placing her baby up for adoption, but her father, Sam Cowell, apparently wanted the baby to join the family in Philadelphia. HOPE THIS HELPSSSSS!
Explanation:
which diagram A or B represents the plant cell
Answers
Answer:
the answer is a
Explanation:
i pretty sure
A student is performing an investigation using rennin and milk. Rennin is an enzyme that can solidify milk. She
puts milk in three test tubes with rennin and places the tests tubes in water baths at different temperatures
of 32°F, 98°F, and 212°F. She notices the rennin enzymes become denatured at 212°F and do not solidify
the milk. Which statement correctly describes the effect of the denatured enzymes?
A. Denatured enzymes are slowly active.
B. Denatured enzymes are no longer active
C. Denatured enzymes reverse the reaction.
D. Denatured enzymes speed up the reaction.
Answers
Answer:
The correct answer is - option B. denatured enzymes are no longer active.
Explanation:
Denaturation of the enzymes or proteins results in changes in their original structure which ultimately results in the loss of their particular functions. The denaturation of proteins or enzymes takes place due to extreme temperature or pH which leads to a change in the active site of an enzyme.
Due to this change, the substrate will no longer fit in the active site and become inactive as enzymes work together with the substrate and the active site is the essential part of the enzyme for its activity. In this case, this is condition takes place which makes it denatured at 212 degrees F.
genetics and the environment both play roles in cell differentiation. which is the best example of an environmental factor influencing cell differentiation
Answers
Answer: etiolation of plant growth in shade, with fast growing cell without chloroplasts. Out of shade, cell differentiate again to produce photosynthesising cells
Explanation: It is a subjective decision as to what is ‘best’. Good examples are plant responses to changes in the nutrient supply.
when soil nitrogen is depleted some plants, such as legumes, grow nodules on their roots, with cells that release chemical signals to attract nitogen fixing bacteria.
Lack of light induces etiolation in many plants. New cells elongate and develop without chloroplasts, with rapid cell division exhibiting gravitropism, extending upward. When they grow beyond the shade area, cell differentiation changes again, to produce photosynthesising cells.
In a study of a muscle disorder, several families exhibited vision problems, muscle weakness, and deafness. Analysis of the mtDNA (mitochondrial DNA) from affected persons in these families was analyzed using PCR (polymerase chain reaction) and gel electrophoresis. The unaffected samples were collected from multiple mitochondria, whereas each affected sample was collected from a single mitochondrion. What can you conclude about the affected individuals' mitochondrial DNA?
A. There is no common deletion.
B. There is one common deletion.
C. There are two common deletions.
D. There are more than two common deletions.
Answers
Answer:
A. There is no common deletion.
Explanation:
The correct answer to the given question is the option A. There is no common deletion.
In the study of the muscle disorder, the samples taken and the effects observed concludes that there was no common deletion among the analysed families and their mitochondrial DNA.
Which layer of the earth is described as "plastic", allowing plates on the
crust to move?
A. oceanic crust
B. asthenosphere
D. lithosphere
C. core
Answers
Answer:
A. oceanic crustExplanation:
The asthenosphere is plastic is made of oceanic crust. The lithosphere is plastic and is made of the upper part of the mantle. ... These plates are large portions of lithosphere that move slowly over the more fluid, underlying material in the region below the crust.
Hi" I hope it's help you"
Answer:
B asthenosphere
Explanation:
the answer is asthenosphere!!
Animal and plant cells have all of the following EXCEPT
A. chloroplasts to carry out photosynthesis.
B. vacuoles to store water and nutrients.
C. a nucleus with DNA to replicate cells.
D. mitochondria to form chemical energy.
Answers
Answer:
The answer is A, chloroplasts to carry out photosynthesis.
Explanation: The animal cell does not have photosynthesis.
Animal and plant cells have all of the following EXCEPT - A. chloroplasts to carry out photosynthesis.
Chloroplasts are the cellular membrane-bound organelle that is specific to the plant cell and does not found in animal cells. Chloroplast carried out the process known as photosynthesis.
In these organelles, photosynthetic pigment chlorophyll found that captures the energy from sunlightMitochondria are also membrane-bound organelle found in all eukaryotic cells including animal and plant cells to carry out cellular respiration.The nucleus is also present in both types of the eukaryotic cell, plant and animal cell that stores genetic material.Vacuoles are present in the eukaryotic cells, to store water and nutrients.Thus, Animal and plant cells have all of the above EXCEPT - A. chloroplasts to carry out photosynthesis.
Learn more about animal cells:
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Which kind of energy propels a sailboat? A) chemical energy , B) electrical energy, C) mechanical energy, D) thermal energy
Answers
Answer:
It is C or D but most likely C
Explanation:
what is heat? please help
Answers
Answer:
I am pretty sure its thermal energy but you might have to check that