The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis.
1. Is this statement true or false?
Living things are classified by the characteristics they have in common.
2. There are seven major levels of classification. Kingdom and Phylum are just two of the levels.
Which choices are also major levels of classification?
Choose all answers that are correct.
Class
Order
Family
Level
3. Which choices are also major levels of classification?
Choose all answers that are correct
Genus
Species
Group
Answer:
1. True
2. class-order-family
3. genus-species
Explanation:
Final answer:
True, living things are classified by common characteristics. The levels of classification include Kingdom, Phylum, Class, Order, Family, Genus, and Species. 'Class', 'Order', and 'Family' are correct answers; 'Homo sapiens' is the binomial name for humans; and a 'kingdom' is a taxon within a domain.
Explanation:
1. The statement that living things are classified by the characteristics they have in common is true. Living organisms are grouped based on shared features, which helps scientists communicate about them and better understand their relationships and evolutionary history.
2. The seven major levels of classification include Kingdom, Phylum, Class, Order, Family, Genus, and Species. Therefore, Class, Order, Family are also major levels of classification, whereas 'Level' is not a recognized category in this context. Genus and Species are the two other levels alongside the ones mentioned.
3. In the binomial nomenclature, Homo sapiens is the correct scientific name for humans, where Homo is the genus and sapiens is the species.
4. A kingdom is correctly defined as a taxon within the broader category of a domain.
5. Lastly, similar classes are grouped into a Phylum in the Linnaean system of classification.
Which mutation is harmful to the organism? A. a mutation allowing moths to camouflage better on blackened tree bark B. a mutation making Staphylococcus aureus resistant to the antibiotic methicillin C. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell D. a mutation causing uncontrolled cell division E. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them
Answer:
D. a mutation causing uncontrolled cell division
Explanation:
A mutation that causes uncontrolled cell division leads to cancerous growths.
This means that an organism with this mutation shall have cancer.
Cancer is a disease caused by the abnormal multiplication of cells in an organism.
This mutation is harmful since it leads to the organism becoming sick and eventually dying.
Answer:
D.) a mutation causing uncontrolled cell division
Explanation:
PLATO
Match each energy source with the correct description
1. creates radioactive waste
wood
2. uses the kinetic energy of water
oil
3. spills can destroy aquatic ecosystems
hydroelectric power
4. burning releases carbon dioxide into the air
nuclear power
5. renewable resource that can be burned
coal
wood- renewable resource that can be burned
oil- spills can destroy aquatic ecosystems
hydroelectric power- uses the kinetic energy of water
nuclear power- creates radioactive waste
coal- burning releases CO2 into the air
Answer:
wood- a renewable resource that can be burned
oil- spills can destroy aquatic ecosystems
hydroelectric power- uses the kinetic energy of water
nuclear power- creates radioactive waste
coal- burning releases CO2 into the air
Explanation:
Which of the following is a way to mitigate global warming?
A. Invest in water sources that do not depend on climate.
B. Invest in alternative energy sources that do not burn fossil fuels.
C. Develop practical ways of dealing with the effects of climate change.
D. Identify crops that can be grown under different climate conditions.
I'm pretty sure the answer is B. Invest in alternative energy sources that do not burn fossil fuels. The reason I would pick B is because in Antarctica the ice is melting more and more over time because, cars and factors etc are burning fuels which result in more damage to the ozone layer.
Answer:
B
Explanation:
help pls
What type of cells are gametes?
Answer:
Egg Cells and Sperm Cells
Explanation:
Gametes are sex cells.
If butter has an energy density of 10 cal per gram and has a density of .9 g/cm³ what would be the amount of calories in nook cube of butter that is 5 cm x 5 cm x 20 cm
Answer:
Amount of calories in that butter is 4500cal
Explanation:
It's relatively simple:
You already have energy density(energy divided by mass)
You already have butter density (mass divided by volume)
And you have dimensions of that butter
From those dimensions (5cmx5cmx20cm) you can calculate the volume, which is 500cm³. Then, using that volume you can calculate the mass (density = mass / volume, which means that mass = density * volume) and that is 450g. Now that you have the mass, you can calculate the amount of calories in that butter (energy density = energy/mass, which means that energy = mass * energy density) and that is 4500cal.
what type of cloud is puffy
Answer:
Cumulus is the cloud that resembles a puffy thing.
Explanation:
PLEASE MARK AS BRAINLIESTAnswer:
puffy cloud is discussed below.
Explanation:
Cumulus is the puffy, white, cotton-top clouds that resemble so fluffy that you imagine angels resting around and preparing their impression on them. They are estimated low-level clouds, but some patterns can develop up past 21,000ft. Cumulus appears in several categories, and here are only a few.A mutation occurs at the midpoint of a gene, altering all amino acids encoded after the point of mutation. Which mutation could have produced this change? deletion of two nucleotides insertion of twelve nucleotides insertion of six nucleotides deletion of three nucleotides
Answer:
Deletion of two nucleotides.
Explanation:
Every amino acid coded by 3 nucleotides.
12:3=4 (amino acids)
6:3=2 (2 amino acids)
3:3=1 (1 amino acid)
After all of these mutations sequence amino acids change, but after continues stay the same.
Only deletion of 2 nucleotides will completely altered all amino acids encoded without mutation.
A frameshift mutation, altering all subsequent amino acids, can be caused by the deletion of two nucleotides or the insertion of a number of nucleotides not divisible by three.
Explanation:In the context of DNA sequencing, a mutation that changes all amino acids following the point of mutation is characterized as a frameshift mutation. This type of mutation is caused by the insertion or deletion of nucleotides in a DNA sequence that is not divisible by three. The options which could cause a frameshift mutation are either a deletion of two nucleotides or an insertion of a number of nucleotides not divisible by three (for instance, an insertion of six nucleotides would not cause a frameshift mutation as it's divisible by three, but an insertion of twelve nucleotides also wouldn't cause a frameshift mutation for the same reason). Thus, the correct answer would be a deletion of two nucleotides.
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Which of the following is not true of viruses
I don’t know what the options are, but remember viruses are:
-nonliving (they cannot reproduce without a host)
-surrounded by a protein coat
-composed of DNA or RNA
-able to live for years
-unable to thrive outside of the host cell
-classified into 4 structural classes (helical symmetry, isometric symmetry, enveloped, bacteriophage)
Meiotic cell division results in gametes that produce sperm and egg cells by-
Answer:In contrast to a mitotic division, which yields two identical diploid daughter cells, the end result of meiosis is haploid daughter cells with chromosomal combinations different from those originally present in the parent. In sperm cells, four haploid gametes are produced.
Explanation:
Meiotic cell division plays a critical role in the production of gametes, which are sperm and egg cells. This process which involves one round of DNA replication and two rounds of cell division results in four haploid cells from an original diploid cell, significantly contributing to genetic diversity in human reproduction.
Explanation:Meiotic cell division results in the production of gametes, specifically sperm and egg cells, through a process known as gametogenesis which includes spermatogenesis and oogenesis. The process begins with a diploid cell, which undergoes meiotic cell division to create haploid cells. These cells contain half the number of chromosomes as the original cell (23 instead of 46 in humans).
In the first stage of meiosis, the 23 pairs of chromosomes separate, creating two cells. During the second stage of meiosis, each of the 23 replicated chromosomes divides, again. This results in four cells each having half the number of chromosomes, thereby leading to the formation of haploid cells, specifically spermatids in sperm.
Finally, a process called spermiogenesis transforms these spermatids, reducing the cytoplasm, and starting the formation of true sperm. The creation of eggs, or oogenesis, follows a similar process. These processes are essential steps in human reproduction and genetic diversity.
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Through____ larger molecules are formed
Answer: Polymerization
Explanation:
because....
The formation of large molecules takes place by the addition of smaller molecules together. These small molecules are called as monomers and larger molecule formed by the addition of these monomers are called as polymer.
The process of formation of polymer from monomers is known as polymerization.
* therefor, the correct answer is Polymerization.
* Hopefully this helps:) Mark me the brainliest:)!!!
Through polymerization, larger molecules are formed.
What is polymerization?Polymerization is a chemical reaction in which relatively small molecules, known as monomers, combine to form a very big chainlike or network molecule, known as a polymer.
Polymerization resulted in huge molecules. The process of polymerization is the creation of polymers. These polymers are then used to create a variety of plastic goods. Smaller molecules, known as monomers or building blocks, are chemically joined to form larger molecules, or macromolecules, during polymerization.
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20 POINTS AVAILABLE
Identify the structures of the heart.
Label A
Label B
Label C
Label D
Label E
Label F
Answer: A. PULMONARY VALUE
B. TRICUSPID VALUE
C. SEPTUM
D. BICUSPID VALUE
E. AORTIC VALUE
F. AORTA
Explanation:
Heart is the organ responsible for pumping blood throughout the body. Label A is pulmonary valve, Label B is tricuspid valve, Label C is septum, Label D is bicuspid valve, Label E is aortic valve and Label F is aorta.
What are valves in heart?Valves regulate the flow of blood coming from and to the heart. There are four valves in heart. These are as follows:
Pulmonary valve: present between right atrium and right ventricle.Tricuspid valve: present between right ventricle and pulmonary artery.Bicuspid valve: present between left atrium and left ventricle.Aortic valve: Helps to keep the direction of blood flow correct from heart.Septum is the tissue that separates left and right ventricles while aorta is the main artery which carry blood from heart to tissues.
Thus, label A is pulmonary valve, label B is tricuspid valve, label C is septum, label D is bicuspid valve, label E is aortic valve and label F is aorta.
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PLEASE HELP KE THIS IS DUE BY TOMMOROW‼️‼️
Answer:
Number 1 is warm and moist
Explanation:
Please help me with this.
this is an opinion. we cant make an opinion for you. just state the pros and cons of animal testing and your overall opinion on it.
The movements of what muscles are mostly voluntary?
The skeletal movements of muscles are mostly voluntary. That is why skeletal muscle is also called voluntary muscle. Their action is normally controlled by an individual's will.
2 examples of precise, measurable evidence of how human activities are having a profound influence on the global climate in terms of greenhouse emissions and climate change
Answer:
The presence of smog in the atmosphere and exploitation and burning of coal
Explanation:
The "smog" can be observed as dark low clouds in the cities. These are formed by accumulation of gases such as: CO2, soot, smoke and dust in suspension. If the atmospheric concentration of the main gases responsible for the greenhouse effect that was maintained in 2016 is maintained, the average temperature of the Earth will have risen 1, 3 ° C in 2020 and 3 ° C in 2070.
In the process of using coal, important environmental damage occurs because when burning it releases large amounts of greenhouse gases.
The damage caused by coal combustion is much greater when poor quality fuel is used, because the impurities it contains are converted into sulfur oxides and other toxic gases.
In the production of electricity, about 5 tons per year are used, causing havoc in terms of pollution
Human activities, specifically the burning of fossil fuels, have led to increased greenhouse gas emissions, which are measured using ice cores and documented emission statistics, showing a profound influence on global climate change.
Two precise and measurable examples of human activities influencing global climate change due to greenhouse gas emissions are:
The use of ice cores as a method for tracking historical carbon dioxide levels over the past 800,000 years. Ice cores have revealed an unprecedented rise in CO₂ levels concurrent with the industrial era, indicating a direct link to human activity.The documented rise in greenhouse gas emissions from burning fossil fuels for transportation and energy generation, specifically noting an increase of CO₂ emissions in industrialized countries which have led to various climate impacts such as increased average temperatures and changes in precipitation patterns.These examples demonstrate the large-scale impact of human behavior on the climate and underscore the necessity for reducing emissions to mitigate climate change.
Consider the model of the oxygen cycle as it moves through the various spheres of Earth. One assumption we can make after analyzing the model is that
A) the majority on the oxygen on Earth is stored in the lithosphere and is the result of weathering.
B) photosynthesis releases oxygen into the atmosphere while aerobic respiration removes oxygen from the atmosphere.
C) oxygen is added from the atmosphere when plants undergo photosynthesis and is removed from the atmosphere by animal respiration.
D) the inputs and outputs of the oxygen cycle are equal and opposite to the inputs and outputs of carbon dioxide in the carbon cycle
Answer:
B)Photosynthesis releases oxygen into the atmosphere while aerobic respiration removes oxygen from the atmosphere.
Explanation:
Only option B satisfies the answer to the question.
We know that photosynthesis is the process whereby green plants manufacture their foods in the presence of carbon dioxide and sunlight. Carbondioxie in the environment is used to manufacture food in plants. The bye product of photosynthesis is oxygen gas. Oxygen gas is used for aerobic respiration in animals and is essential for their life. This way photosynthesis adds to the pool of oxygen in the atmosphere and aerobic respiration removes from the pool.
Answer:
B
Explanation:
it's the only answer that fully answers this question. and i took the test
A worm is living inside a cow and stealing nutrients from the cow's body, causing the cow to become malnourished. What type of symbiotic relationship is this?
A. Two or more organisms looking for the same resource
B. Adults outcompeting offspring for resources
C. Organisms from the same species looking for the same resource
D. Organisms from different species looking for the same resource
Answer:
Option B, Adults out competing offspring for resources
Explanation:
In a symbiotic relationship two species/organisms live together in a mutual relationship in which either
a) Both of the species get benefitted
b) One of the species get benefitted and the other species get harmed
c) One of the species get benefitted and the other species is neither harmed nor benefited.
In this case , the worm with in the cow's body get benefited while the cow herself gets harmed as her food is stolen.
Hence, option B is correct.
Which is an example of renewable resources
Final answer:
Wind is a renewable resource that can be replenished naturally at a pace that matches or exceeds its usage by humans, making it sustainable and inexhaustible. Other examples are sunlight and tidal movements, all harnessed for alternative energy sources.
Explanation:
An example of a renewable resource is wind. Wind is a natural resource that is replenished by natural processes at a rate that is equal to or faster than it is consumed by humans. It is harnessed through wind turbines for energy development and is considered an alternative energy source that is sustainable and in no danger of being used up. Other examples of renewable resources include sunlight, which can be captured for solar power, and the movement of ocean tides, which can also be tapped for energy.
Unlike nonrenewable resources such as coal, which exist in fixed amounts and can be depleted, renewable resources like wind, sunlight, and the kinetic energy of water can be utilized repeatedly without running out. In addition to wind and solar energy, sustainable materials like wood, cork, bamboo, and certain crops can be considered renewable if they are managed in a way that allows them to regenerate and meet the needs of both present and future generations.
When dead animals decompose which of the following is released into the atmosphere
the awnser is carbon dioxide.
Answer:
◎ oxygen
◎ calcium
◎ carbon tetrachloride
◉ carbon dioxide
Explanation:
Once animals die, they release carbon compounds into the atmosphere and into the ground as they decompose.
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Diffusion of water across a membrane from areas of higher concentration to areas of lower concentration is called _____. osmosis passive diffusion facilitated diffusion cellular respiration
Osmosis is the process of diffusing water across a membrane.
The correct answer is Osmosis.
Diffusion of water across a membrane from areas of higher concentration to areas of lower concentration is called osmosis.
Hope this helps chu
Have a great day
what is the genotype for white chickens
Explanation: The allele for black is B and the allele for white is W. The heterozygous phenotype is known as erminette.
What codes for proteins?
Plz help need it ASAP
_______________________
DNA
RNA
Polypeptides
Amino acids
Answer:
Kind of late but RNA codes for proteins.
Explanation:
long answer
DNA is transcribed to RNA and then mRNA (messinger RNA) with the help of ribosomes and tRNA (transfer RNA) add amino acids into a polypeptide chain (a linear line of amino acids) which then folds into a protein
what has occurred when DNA overloads in a cell
Answer:
When the cell becomes too large, the DNA cannot keep up with demands.
Explanation:
What is DNA Overload :
As the cell grows, the demands are placed on the cell's DNA. If this ratio gets too low, the cell cannot efficiently move materials in & out of the cytoplasm. This process is called DNA overload.
THE CELL CYCLE
Cell cycle is a series of cellular events during which the cell grows, prepares for division & then divides.
Cell Growth and Division
When the cell becomes large, DNA and the more trouble the cell has moving enough nutrients and wastes across the cell membrane.
Please Help!
How do various types of infectious agents respond to the use of antibiotics?
A. Viruses respond to antibiotics; bacteria do not.
B. Bacteria respond to antibiotics; viruses do not.
C. Both bacteria and viruses respond to antibiotics.
D. Neither bacteria nor viruses respond to antibiotics.
Im pretty sure it's not D.
Answer:
c
Explanation:
The reason being that a virus is spread, like influenza. You cant kill this, but when you have a stomach bug, most of viruses are killed, but a lot of bacteria is also killed
As bacteria respond to antibiotics and viruses do not, option B. is the correct option.
How do bacteria respond to antibiotics and viruses do not?Antibiotics can not kill viruses because viruses have different physical structures and are known to replicate in a different way than bacteria.
Antibiotics work by targeting the growth machinery in bacteria and not viruses which kills or inhibit that particular bacteria.
Talking about it structurally, an antibiotic can not kill a virus with a completely different replicating “action”.
Hence, as bacteria respond to antibiotics and viruses do not, option B. is the correct option..
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Which structure(s) carry oxygen-rich blood away from the heart? - arteries -veins -ventricles -atria
Answer:
Arteries carry oxygen-rich blood away from the heart.
Explanation:
Blood vessels are part of our circulatory system and help in the blood distribution in whole body. There are 3 types of Blood vessals.
1. Arteries
2. Veins
3. Capillaries
Arteries are the vessels that carry the oxygen rich blood from the heart to the other parts of the body. While veins have the de-oxygenated blood. Capillaries are very small vessels that are the site of transfer between cell and blood. Nutrients from blood for example glucose are transferred to the cells.
Scientists believe ___ were the first types of cells able to make their own food.
a. cyanobacteria
b. chemoautotrophs
c. photoautotrophs
B. Chemoautotrophs is the answer
Answer: a. cyanobacteria
Explanation:
Cynobacteria is considered to be the first organism on earth which was capable of producing it's own food by the process of photosynthesis. The cynobacterial strain used to exists on earth around 3.5 billion years ago. These were the first unicellular prokaryotic organisms. They had a large number of colonies. These were responsible for the liberation of large amount of oxygen in the oxygen deficient primitive earth atmosphere.
HELP ASAP!!!!! Snakes feed on mice. The mice eat grain crops. When the crops are plentiful, what will happen? A: the snake population will increase. B: the mouse population will decrease. C: the snake population will decrease D: the mouse population will not change
Answer:
The snake population will increase
Explanation:
The snake population will increase will increase because the mice will have more feed which will cause the mice population to increase. if the mice population increases than the snakes would have more food, so their population will also increase.
When the crop will plentiful, the snake population will increase. The correct option is A.
What is a food chain?A food chain is a chain that includes the transfer of energy from one level to another level. All animals and plants are connected to each other by the food chain.
As, the snake feed on mice, if the crops will increase the population of mice increase, and when the population of mice increases the snake population will also increase indirectly.
Thus, the correct option is A: the snake population will increase.
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What is the ecological role of the animal in#16
Answer:
Could you please add more to the question? I'd love to help you.
The ecological role of animals includes contributing to their ecosystems, maintaining their internal environments, and certain important species helping maintain ecological balance. Changes in energy or matter availability can affect their ecosystem and biodiversity levels can be maintained through measures like habitat restoration and conservation efforts.
Explanation:The ecological role of an animal can range from being key contributors to their ecosystems, like pollinators of plants, to being a part of complex food chains. They also maintain their internal environments using mechanisms like negative feedback. Certain species, which are termed as keystone species, play a critical role in maintaining ecological balance, for example, the reintroduction of wolves in Yellowstone Park led to an increase in biodiversity.
Animals also impact their surrounding environment and ecosystem. Changes in energy availability or matter in an ecosystem can result in significant effects on all organisms within the ecosystem. For instance, a decrease in available prey can reduce predator populations. To ensure the survival of multiple species and retain the biodiversity levels, measures such as habitat restoration can be taken. Efforts include the reintroduction of extinct species into their habitats and creation of conservation areas.
Lastly, humans also play a significant role in conservation and creating public awareness through institutions like zoos and through roles like ecologists who undertake various efforts to manage natural resources and develop environmentally sound policies.
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scissors used to cut iron sheets has longer handle than the scissor used o cut cloth. Why?
Answer:
It has a greater length to reduce the effort as more the distance between the fulcrum and point of action more is the moment of force and hence the effort applied will be less.
The metal is harder than fabric, so, with longer handles the scissors can apply more force than would be needed for soft fabric.