Answer:
Focal length is 6.67 cm.
Explanation:
Object distance, u, from the lens = 10 cm
Image distance, v, to the lens = 10 cm + 10 cm
= 20 cm
Apply the lens formula to determine the focal length, f, of the lens.
[tex]\frac{1}{f}[/tex] = [tex]\frac{1}{u}[/tex] + [tex]\frac{1}{v}[/tex]
= [tex]\frac{1}{10}[/tex] + [tex]\frac{1}{20}[/tex]
= [tex]\frac{2 + 1}{20}[/tex]
[tex]\frac{1}{f}[/tex] = [tex]\frac{3}{20}[/tex]
Find the inverse of both sides, so that;
f = [tex]\frac{20}{3}[/tex]
= 6.67
f = 6.67 cm
The focal length of the lens is 6.67 cm.
Look at the following chemical reaction.
Which process is happening in the reaction that is shown?
A. Dehydration
B. Acidization
C. lonization
D. Hydrolysis
Answer:
Dehydration, sorry if its wrong
Explanation:
Hydrolysis is happening in the reaction. Hence the correct option is D.
Hydrolysis is a chemical process that involves the breaking down of a compound through the addition of water. During hydrolysis, a water molecule splits into hydrogen and hydroxide ions, which participate in the cleavage of the chemical bond within the compound, resulting in the formation of two or more new substances.
Hydrolysis reactions are found in various natural and synthetic processes. In the context of biomolecules, such as proteins, carbohydrates, and fats, hydrolysis plays a fundamental role in their digestion and utilization. In industrial processes, hydrolysis is also employed to break down complex molecules into simpler components.
Hence the correct option is D.
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PLEASE PLEASE HELPI WILL NAME BRAINLIEST
As plants evolved from algae, they developed the ability to live on dry land. Which of the following adaptations was most useful for this development to occur?
A. structures for reproducing in standing water
B. chemicals for resisting insect attacks
C. tissues for drawing water from the soil
D. enzymes for converting oxygen to carbon dioxide
Answer:
C.
Explanation:
Hope this helps
Since a virus is NOT a cell it does not have a membrane . What does it have instead ?HELP
Answer:
I think it has a DNA or RNA
A botanist is trying to determine the best medium for growing new juveniles orchids.He collected data on the four different types of media that were used to grow the juvenile orchids, as shown in the table below
Medium 3 bc it progressed the most
Some roses have streaks of pink and streaks of red to give a striped effect to
their petals. Which inheritance pattern that you have read about today do you think
might be involved in the coloring of these roses? Explain.
(will give branliest answer)
Answer: ½ Rr (pink) ½ RR (red) b. rr × Rr gametes: Rr: ½ R, ½ r rr: all roffspring: ½ Rr (pink) ½ rr (white) c. RR × rr gametes: rr: all r RR: all Roffspring: all Rr (pink) d. Rr × Rr gametes: Rr: ½ R, ½ r for each parent offspring: ½ Rr (pink) ¼ RR (red) ¼ rr (white)
Explanation:
Where are the oldest fossils located and why?
Answer:
Western Australia
Explanation:
Microscopic fossils discovered in a nearly 3.5 billion-year-old piece of rock in Western Australia.The oldest fossils ever found and indeed the earliest direct evidence of life on Earth
is carbon a element or a compound
Answer:
Element
Explanation:
Hope this helps :)
Chlorofluorocarbon molecules are environmentally significant because
a.their chlorine atoms can destroy many stratospheric ozone molecules.
b.they are poisonous, flammable, and corrosive to metals.
c.their absorption of lethal solar energy protects Earth.
d.they readily break down ozone molecules produced as pollution
Answer:
their chlorine atoms can destroy ozone molecules
Explanation:
The cell membrane plays an role in the transport of substances into and out of cells. Which is an example of passive transport?
In the United States, it is possible for discoverers of gene sequences in organisms to patent those sequences. This gives the discoverer property rights for the sequence. Many scientists object to this practice. Which is the strongest scientific argument against allowing a gene sequence to be patented?
Group of answer choices
Patenting sequences prevents conservationists rom understanding the ecological needs of organisms from which the patented sequences come.
Patenting sequences prevents he sequences from being expressed in nature.
Patenting sequences prevents researchers from studying and creating innovations from the patented sequences.
Patenting sequences prevents the sequences from being used in genetically modified organisms.
Answer:
Explanation:
There is little evidence that early fears about gene patenting placing substantial ... owner and do not protect against independent invention), patents require disclosure that ... gene knock-out methods and even for individual gene sequences. ... Human gene patents result from the cloning and description of the sequence of a ...
so option c maybe
A red-shift indicates that objects are moving toward Earth.
Please select the best answer from the choices provided
T
F
Answer:
The answer is false.
Explanation:
The red shift means that objects are moving away from the sun and Earth.
What are the advantages of offspring (babies) that are derived from sexual reproduction?
PLZ ANSWER THIS IS MY LAST DAY AND I DONT WANT TO FAIL
Answer:
Explanation! Hope this helps and you dont fail <3
Explanation:
The advantages of sexual reproduction: produces genetic variation in the offspring. the species can adapt to new environments due to variation, which gives them a survival advantage. a disease is less likely to affect all the individuals in a population.
Answer:
Genetic variation in the offspring, and certain diseases are less likely to affect all the individuals in a population.
discuss in detail about the covering of lung
Answer:
The lungs are covered by a thin tissue layer called the pleura. The same kind of thin tissue lines the inside of the chest cavity -- also called pleura. A thin layer of fluid acts as a lubricant allowing the lungs to slip smoothly as they expand and contract with each breath
DRY MASS OF CORN SEEDLINGS GROWN UNDER DIFFERENT CONDITIONS
Initial Dry Mass of Dry Mass of10 Change in dry
Treatment Group Treatment 10 Plants (g) Plants After Mass of10 Plants
One Week () over One Week
I None 14.8
II Light 32.8 +18
III Dark 11.7 -3.1
Thirty corn seedlings of equal size were randomly assigned to one of three treatment groups. At the beginning of the experiment, the plants in group I were dried and the mass was determined. The plants in group II were maintained in light for a week. The plants in group III were maintained in the dark for a week. All conditions other than light, were the same for groups II and III. At the end of the week, the plants in groups II and III were dried and the mass was determined. The experimental results are provided in the table.
(a) To explain the increase in mass of the light-grown plants, identify ONE inorganic source of new plant mass and connect it to the cellular process underlying the increase in mass.
(b) To explain the decrease in mass of the dark-grown plants, identify the overall chemical reaction that is occurring in the plant cells and connect it to the cellular process underlying the decrease in mass.
Answer:
See the answer below
Explanation:
(a) One of the inorganic sources of new plant mass for the light-grown plants is the atmosphere. The carbon in the form of carbon dioxide in the atmosphere is sequestrated into the body of the light-grown plants through a process known as photosynthesis. During this process, the inorganic carbon dioxide becomes fixed into the body of the plant through a series of steps that include both light-dependent and light-independent. The overall equation of the process is as below:
[tex]6CO_2 + 6H_2O + Light --> C_6H_1_2O_6 + 6O_2[/tex]
As more plant mass is being gained by photosynthesis, some of the gained mass is also being lost to energy generation through a process known as respiration. Respiration is like the complete opposite of photosynthesis but a gain in mass is still possible because the rate of photosynthesis is more than the rate of respiration in the light-grown plants.
(b) The chemical reaction that can be held responsible for the decrease in mass of the dark-grown plants is respiration. Some of the mass is lost to energy generation and this mass cannot be recouped by adequate photosynthesis due to light limitation. The energy is needed to metabolic processes that would keep the plants alive. The equation of respiration is as below:
[tex]C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_2O + Energy[/tex]
Answer:
A) Inorganic source of cellular mass is CO2. Plants take up CO2 from the atmosphere. By the process of photosynthesis, plants prepare sugars . Sugar gets converted in to starch, cellulose and other carbohydrates which are stored in the cells of the plants. This increases the plant mass . Plant requires water,CO2, light chlorophyll.
Chlorophyll absorbs sun light and converts it in to chemical energy. Chemical energy is used by the plant to synthesize sugars. Because of the synthesis of the sugars ,starch etc , the mass of the plant increased. Plants need light for making sugars.
B. Decrease in the mass is due to cellular respiration. This group of plants are in dark. So they do not photosynthesis.
But they have to undergo respiration to get energy for the activities of the plant. So no photosynthesis is occurring, hence no sugar formation. But sugar present in the plant is consumed to release energy. That is why mass of the plants kept in dark is reducing.
Cellular respiration has 3 steps. 1. Glycolysis 2. Kreb's cycle. 3. Electron Transport Chain.
The cellar respiration provides energy to all living organisms.
[tex]C6H12O6 + 6 O2 ---------> 6CO2 + 6H2O + energy (ATP)[/tex]
CO2 released is given out of the plant body. So this is reducing the plant mass.
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issues related to the Amazon rainforest
What are the products of meiosis? Click ALL correct options. Sperm cells 4 cells Unique/ditieren cells Egg cells 2 cells
Place the items in order from highest to lowest degree of internal organization. tissue organ system organ cell ↓ ↓ ↓
Answer:
The images of parts of the human nervous system in order from lowest to highest degree of internal organization are as follows: cell, tissue, organ and system. The cells are produced to form the tissues in the body and it is produced for an organ to be produced.
Answer: cell, tissue, organ and system.
Explanation:
please help asap, u will get brainliest!!
a wave with a frequency of 2.364 has a wavelength of 10.4045. What is the speed?
a sound wave with a speed of 346 meters per second has a frequency of 30.025. What is the wavelength of this wave?
8.4 waves go by in 6.875 seconds. Calculate the frequency (per 1 second).
Answer: 4.4; 10,339; 0.145
Explanation:
F = c/L f = frequency, c= wave speed L = wavelength
1. 2.364 = 10.4045/c, c= 10.4045/2.364 = 4.4
2. 30.025 = L/346, L = 30.025*346 = 10,339
3. period of the wave 6.875/4 = 1.72 and f= 1/period = 4/6.875 = 0.145
Which of these is NOT an example of a pure substance? A a tablet of the element known as calcium
B a glass of muddy water
C a glass of ice and water
D a chemical compound known as aluminium oxide
Answer:
a glass of muddy water
Explanation:
Pure substances contain only one element or compound.
Calcium is one element so it is a pure substance. Ice and water have the same molecular structure, so it is a pure substance. Aluminum oxide is a chemically pure compound.
The only example that is not a pure substance is muddy water due to the multiple components of mud mixing with the components of water.
Hope that helps.
True or False: Food Webs are generally more accurate and detailed models of an ecosystem than Food Chains.
Answer:
True
Explanation:
They have more options and possible ways
Answer:
true,
The food web provides a better model of an ecosystem because the food web is a model between MANY different consumers and producers in an ecosystem. While the food chain is a model for just one consumer and producer. ... Because energy is lost as it moves from producers to consumers, the bottom level is the largest.
Name 3 parts found in a plant cell that are also found in an animal cell.
Answer:Plant cells have plasmodesmata, a cell wall, a large central vacuole, chloroplasts, and plastids. Animal cells have lysosomes and centrosomes.
Explanation:The best answer
Can somebody help me on this question for BRAINLIEST please?
Answer:
D. all of the above
Explanation:
por que si
What do plant cells have that animals cells do not?
Answer:
Animal cells have centrosomes (or a pair of centrioles), and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.
Answer: Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.
Explanation:
What happens during Prophase I? You will need to think about what you learned during mitosis to fully answer the question.
DNA coils into chromosomes
Crossing over
Nuclear Membrane disappears
Chromosomes line up in the middle of the cell
Answer:
Crossing over
Explanation:
Prophase I is the first stage of meiosis I, it is the longest phase of meiosis. Crossing over (also known as recombination) can be defined as the process of exchange of genetic material between non-sister chromatids that occurs during Prophase I. Crossing over represents a critical source of genetic variation in offspring (the other one is the random orientation of the homologous chromosomes pairs). After crossing over, the resulting haploid (n) gametes aren't genetically identical to one another.
Which is not true about mitosis?
A. The chromosomes in the daughter cells are half the number from the parent cell.
B. The chromosomes in the daughter cells are the same number as the parent cell.
C. Each nuclei is identical to the parent nucleus
D. The four main stages are prophase, metaphase, anaphase, and telophase
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Electron microscopes can reveal details
Answer:
Answer is on the pic
Explanation:
I hope it's helpful!
What two main ways cause genetic disorders?
Answer:
Mutation in genes or by damage to chromosomes
Explanation:
if non-conjunction concurs and an individual survives, which disorder can occur?
After this, rRNA creates bonds between _____________ to make __________
Answer:
After this, rRNA creates bonds between amino acids to make proteins.
Some important points to know:
rRNA (Ribosomal RNA) is used in the synthesis of proteins.
Amino acids are the building blocks of proteins which means that proteins are made up of amino acids.
When amino acids are joined together, they form proteins.
The bond between two or more amino acids when bonded is called "peptide bond".
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807Answer:
rRNA bonds with mRNA which creates peptide bonds between amino acids creating PROTEINS
Explanation:
How would an increase in surface temperatures in the pacific affect sea otters and why would this happen?
Explanation:
How would an increase in surface temperatures in the pacific affect sea otters and why would this happen?
The water that sea otters live in is chilly, ranging from 35 to 60 degrees Fahrenheit—much too cold for humans. Otters don't have blubber to keep them warm like other marine mammals. Instead, they rely on their thick fur coat to maintain a constant body temperature of 100 degrees Fahrenheit.