Answer:
The answer is C- Lysosomes are present in both bacterial and animal cells.
Explanation:
Lysosomes contain digestive enzymes inside them, which when released break down damaged cell parts. These enzymes are acidic in nature and are separated from other organelles with the help of a membrane.
Lysosomes help in killing bacteria and virus invading the cell body. Lysosomes also take part in the process of cell death known as 'apoptosis'. This happens only when a certain cell is beyond repair.
Lysosomes are present in plant cells, animal cells, bacterial and yeast cells.
Answer:
Its in the animal cells only
Explanation:
just trust me we went over this in class but if you want an explanation:
The plant cell has a cell wall, chloroplasts, plastids, and a central vacuole—structures not found in animal cells. Plant cells do not have lysosomes or centrosomes.
Cancer cells are less likely than normal cells to undergo _______, or programmed cell death.
Cancer cells are less likely than normal cells to undergo _apoptosis______, or programmed cell death.
Apoptosis is synonymous to programmed cell death
Explanation:
Programed cells death of the cell is required to maintain proper tissue homeostasis. Examples of when apoptosis is necessary are when a cell may have errors in its DNA replication process. Apoptosis ensures the cell does not continue dividing and generating cells with the error. Other forms of damage to a cell that is hard to repair also require that the cell undergo apoptosis.
In cancer cells, apoptosis pathway faulted and even when cells are required to undergo programmed cell death, such as in the case when lethal mutations occur, the cell continues to divide creating many cells that have the defect. This is what creates cancer tumors,
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Answer: haploid
apoptosis
metaphase plate
Parthenogenesis
Meiosis
chiasma
Answers may vary. Meiosis results in four daughter cells, whereas mitosis produces only two daughter cells. Meiosis has two distinct phases, meiosis I and meiosis II, whereas mitosis takes place in a single cycle. Daughter cells in meiosis are genetically unique from one another. Mitotic daughter cells are genetically identical. Both mitosis and meiosis have similar basic steps (prophase, metaphase, anaphase, and telophase). Both mitosis and meiosis have cell cycle regulation mechanisms, including checkpoints and cell cycle regulators, which allow them to consistently produce normal cells.
Explanation:
How many times can mechanical
energy become chemical energy?
A. one time
B. two times
C. an infinite number of times
Answer
c
Explanation:
because mechanical energy has approximately 2.65% chemical energy causing it to be able to constantly change.
The mechanical energy becomes chemical energy an infinite number of times. The correct option is C.
What is mechanical energy?Mechanical energy is the energy that can be kinetic or potential. It is the energy that is possessed by an object when it is doing any work or is in motion. For example, if a box is held vertically, it contains mechanical energy that is released when it is released.
Chemical energy is the energy that is stored in the bonds of atoms and molecules. The energy is released when any reaction happens, the bonds release energy.
The mechanical energy can change into chemical energy for an infinite time because during every reaction, the energy is used and chemical energy is either formed or released.
Thus, the correct option is C. an infinite number of times.
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Based on the diagram of a roller coaster track, what statement is true?
A) A car at point A has the most kinetic energy.
B) A car at point B has the most potential energy.
C) A car at point B has more kinetic energy than the car at point D.
D) A car at point D has more kinetic energy than the car at point B.
Answer:
C) A car at point B has more kinetic energy than the car at point D.
Explanation:
When it travels from A to B, it passes it with a lot of kinetic energy (motion energy).
When it comes to point D, it slows down for the stop. This loses kinetic energy.
So there is more kinetic energy on point B than on point D.
Answer:C
Explanation:
Which of the following best describes gene flow
Answer:
When animals immigrate into another breeding population they may bring with then alleles that are rare or unknown in the population they breed into.
Explanation:
Gene flow is the movement of genes from one population to another population. Examples of this include a bee carrying pollen from one flower population to another, or a caribou from one herd mating with members of another herd. Genes can come in different forms called alleles.
Also, I didn't see the list of choices.
Gene flow involves the movement of gene and it's variant from one location to another.
What is gene flow?This is the movement of gene from a place in a population to another population.
The movement can be due to migration or mutation that can lead to transfer of a gene from one individual to another.
Therefore, gene flow involves the movement of gene and it's variant from a place to another.
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Which of the following statements about the Sun is true?
A.
The Sun is only one of billions of stars in the galaxy but is much smaller than any of the other stars.
B.
The Sun is only one of billions of stars in the galaxy, many of which are very similar to the Sun.
C.
The Sun is only one of billions of stars in the galaxy but is much larger than any of the other stars.
D.
The Sun is one of only a few stars in the galaxy but is much smaller than any of the other stars.
B. The Sun is only one of billions of stars in the galaxy, many of which are very similar to the Sun.
Explanation:
The sun is only one of the billions of stars in the galaxy, many of which are very similar to the sun.
The sun is the only star in the solar system which is made up the planets, their satellites and other planetary bodies.
There are several systems of stars in the universe. A cluster of stars is known as the Galaxy. The name of our Galaxy is called the Milky Way. A several groups of Galaxies makes up the universe. The sun is a star power by nuclear fusion of light atoms in its core.Learn more:
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Answer:
B.
The Sun is only one of billions of stars in the galaxy, many of which are very similar to the Sun.
Explanation:
Our galaxy is made up of billions of stars, one of which is our Sun. These differ greatly in size, and our Sun is considered to be a medium-sized star. There are many stars similar to our Sun and many more that are either smaller or larger than our Sun.
Match the function to the type of tissue
Answer:
Nervous tissue- sends signal from brain and body
Muscle tissue- allow shivering to produce heat to maintain body temperature
epithelial tissue- protects skin from bacteria and other particles
connective tissue- provides structural support for the organs
Explanation:
Nervous tissue contains nerves, spinal cord, and brain. Neurons in nervous tissue is responsible for receiving and stimulus from the body and sending signal from the brain and body.
Skeletal muscles are involved in the shivering during the cold. In shivering involuntary contraction of skeletal muscle occurs when body temperatures goes down which generates heat and rise the body temperature.
Epithelial tissue coves the body surface and do not allow any bacteria and other microbes or chemicals to enter the penetrate it and enter in the body. So epithelial tissue plays a role in protection.
Connective tissue provides structural support for the organs like bone and cartilage provide structural support to the soft tissue of the body and provide strength to the body.
The human body contains four main types of tissues- epithelial, connective, muscle, and nervous. Each of them performs unique functions to ensure the health and functioning of the body. Epithelial tissue forms the body’s linings, connective tissue provides support, muscle tissue enables movement, and nervous tissue facilitates communication.
Explanation:The human body consists of four main types of tissues: epithelial tissue, connective tissue, muscle tissue, and nervous tissue. Each of these tissues performs unique and specific functions.
Epithelial tissue: These are sheets of cells that cover exterior body surfaces, line internal cavities and passage ways, and are involved in forming certain glands.Connective tissue: This type of tissue binds cells and organs of the body together. They play a key role in protection, support, and integration of all body parts.Muscle tissue: Muscle tissues respond to stimulation and contract to allow movement. They are of three types- skeletal (voluntary) muscle, smooth muscle, and cardiac muscle in the heart.Nervous tissue: Nervous tissue is excitable and allows propagation of electrochemical signals in the form of nerve impulses. This function is critical for communication between different regions of the body.Learn more about Tissue Types and Functions here:
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Why might genetically engineering a crop to be herbicide resistant result in producing weeds that are herbicide resistant?
Answer:
Genetic engineering can be used to produce plants that are resistant to herbicide. One herbicide works by preventing the activity of an enzyme.
Explanation:
Which situation describes parasitism?
O
A. Vegetables grow in a garden frequented by many rabbits.
) B. Ants feed on aphid wastes and protect the aphids from predators.
O
C. A bear catches and eats a salmon from a stream.
O
D. Ticks live on and drink blood from a cow.
SUBMIT
Answer:
D. Ticks live on and drink blood from a cow.
This is an example of parasitism, where the ticks (parasite) are living off of the blood of the cow, the host animal.
Explanation:
Parasitism is a relationship between organisms. In this relationship, one organism (parasite) lives on or in another organism (host) and gains benefits from the host, causing it some harm.
Parasites are classified as ectoparasites, which live on the body surface of the host (ticks, fleas, leeches, and lice) and endoparasites, which live in the body of the host. Endoparasites are either intercellular, which live inside the host’s body (round worms, tapeworms) or intracellular, which live inside the cells in the host’s body (bacteria or viruses).
Parasites help to control dominant species and has a role in evolution by transferring genetic material between species.
Answer:
Ticks live on and drink blood from a cow
Explanation:
The only feed on cow and the cow gain nothing in return. That is parasitic
As the human population continues to grow, humans cut down trees to build homes, shopping malls, and roads. Which part of the water cycle is affect by the cutting down of trees and removal of plants? Evaporation Condensation Transpiration Run off
Answer:Transpiration
Explanation: water cycle is the continuous movement of water on the Earth to ensure the availability of water.water is a universal solvent that is essential for the survival of living things.water cycle ensure that clean water is available.plants require water which is gotten from the soil.water is lost from the leaves of trees through transpiration.transpiration may also occur through the lenticels and stomata of stems.
the movement of water through the plant is called transpiration pull.this is responsible for the pull of water into the leaves.it increases the absorption of minerals from the soil and also cools the plant.
This water vapour that transpire from the plant,is condense as clouds, which then falls to the Earth as rain and the water cycle continue
why the change in only one DNA base of a gene could result in a different protein produced by the gene?
It happens because of Point mutation
Explanation:
A point mutation can be understood as when one nucleotide is added, deleted or changed. Through change in DNA structure a gene can be altered and it is called mutation. Point mutation’s other term is insertion as well as deletion. It mostly involves in substitution.
Rarely, Point mutation is responsible for huge change. Basically, two types of point mutation happen. They are transition or transversion mutations.
Which organisms are most likely to survive in a population in which disruptive selection is occurring
Answer:
organisms that have extreme traits
Explanation:
Answer:
b
Explanation:
organisms that have extreme traits
How is science different from other subjects such as art or history
Science is the study of everything it is generally has it's fingers in every (subject) pie. But could be the detailed description of it.
Answer:
Science is about the cells and stuff while art is about the drawing and human body and history is about the stuff that has or is happening in our world.
Explanation:
Do you need this on like a quiz or somthing? Just wondering
What is the role of cyclin-dependent kinases in the cell cycle?
Question 5 options:
They stop the cycle if something has gone wrong.
They catalyze the condensation of the chromosomes.
They provide the energy for the actions of the spindle fibers.
They initiate various stages of the cell cycle.
The role of cyclin-dependent kinases in the cell cycle is that, they stop the cycle if something has gone wrong.
Explanation:
In Eukaryotic cells cyclin-dependent kinases are universal regulator cell. It undergoes a constant cycle and degradation known as Mitotic and G1 cyclin. When cycle dependent cycle synthesize it acts like an activating protein and then bind to cyclin-dependent kinases forming cyclin-dependent kinases complex.
Now it acts as signal to the cell to pass the next phase of cell cycle. After its cyclin gets degraded, it deactivates the cyclin-dependent kinases and from particular phase signalling stop
Cyclin-dependent kinases, when bound to cyclins, form active complexes that phosphorylate other proteins to advance the cell through various checkpoints of the cell cycle. The concentrations of cyclin govern the timing of these events, and Cdk inhibitors can halt the cycle if necessary until conditions are favorable for progression.
The role of cyclin-dependent kinases (Cdks) in the cell cycle is crucial for the regulation and progression of the cell through different phases. Cdks, when bound to cyclin proteins, form active complexes that can phosphorylate other proteins. This phosphorylation is essential for activating proteins that advance the cell past various checkpoints, ensuring proper cell cycle progression.
These kinase enzymes are regulated by the levels of cyclins, which fluctuate during the cell cycle. The formation of the Cdk/cyclin complex, and its subsequent activation by phosphorylation at specific sites, is integral to the cell's advance to the next phase. These complexes become active at different points, each regulating distinct checkpoints within the cell cycle.
Furthermore, Cdk inhibitors play a role in halting cell cycle progression under problematic conditions until issues are resolved, ensuring the cell cycle only proceeds when it is safe to do so. By controlling the cell's progression through checkpoints such as G1, G2, and metaphase, these molecules serve as both triggers and gatekeepers of the cell cycle.
When plants and animals die, their bodies are decomposed by organisms such as bacteria or fungi. Which statement is true regarding the decomposition process?
A.
Decomposition is a chemical change because the identity of the dead plant or animal does not change.
B.
Decomposition is a chemical change because the organism is broken down into new substances.
C.
Decomposition is a physical change because the organism is broken down into new substances.
D.
Decomposition is a physical change because the identity of the dead plant or animal does not change.
Reset Submit
Answer:
is the chemical change because the identity of the dead plants or animal does not change
Answer: Option B
Explanation:
The process of decomposition can be defined as the process in which the body of the organism is broken down from complex substances to the simpler substances.
The process is a part of the nutrient cycle is essential because the nutrients needs to be recycled in order to be available for the plants and other species.
The body starts decomposing after the death of the organism. It is a chemical change in which the complex form of the body is converted into simpler form.
which process is part of the carbon cycle? A) evaporation B) transpiration C) photosynthesis C) fixation
Answer: b) transpiration
Answer:photosynthesis
Explanation:
WILL MARK BRAINLIEST!!!
Which materials are moved by runoff? Select two options.
A. topsoil
B. nutrients
C. vegetation
D. large rocks
E. paved surfaces
Answer:
The materials moved by runoff are topsoil and nutrients
Explanation:
Topsoil is easily washed off by runoff whenever it rains, they are made up of light materials which helps their easy migration during runoff. Nutrients in same vein when added to soil, most nutrients takes longer period before they eventually moves down the soil to penetrate plants root for uptake, hence; some remains on topsoil which are easily moved during runoff
the whale shark is accompanied by pilot fish who ingest any parasites they find on the surface of the shark skin. identify the relationship as predator prey mutualism commensalism parasitism or interspecific competition
Answer:
The correct answer will be option- mutualism
Explanation:
Organisms interact with each other in an ecosystem in many ways which could prove beneficial or harmful interaction.
The interaction between the whale shark fish and the pilot fish is beneficial to both the fishes and prove mutualistic so the interaction is called mutualism.
The interaction is mutualistic as the pilot fish which swims in the mouth of the whale help get rid of the small pieces of food stuck in the mouth. The pilot fish thus eats the food of the whale whereas the whale benefit pilot fish by not eating the pilot fish.
Thus, mutualism is the correct answer.
The relationship between whale sharks and pilot fish is mutualism, a symbiotic relationship where both species benefit. Pilot fish eat parasites from the shark’s skin, and the shark gets a healthier skin in return.
Explanation:The Relationship between Whale Sharks and Pilot FishThe relationship between whale sharks and pilot fish can be identified as mutualism. In this symbiotic relationship, both species benefit: the pilot fish ingest parasites from the shark's skin, which provides them with food, while the shark benefits from the removal of the parasites, sustaining skin health. This relationship is comparable to other instances of mutualism in the marine environment, such as the goby fish and shrimp, where both parties gain from the association.
Mutualistic relationships are essential for maintaining the balance of ecosystems and can also manifest in different forms, such as with cleaner fish that remove parasites from within larger fish’s mouths. Similarly, the relationship between the remora and the shark is often considered commensalism, where the remora benefits while the shark is largely unaffected. However, in some cases, these relationships may even transition into mutualism if the presence of the remora or other organisms provides some form of benefit to the host.
Will give brainliest plz help
Answer 14
Answer:
liquid- enzymes
protein- fat
carbohydrate- saccharides
nuclei acid- dna or deoxyribonucleic acid
Which of the following statements about fossil fuels is false?
Answer:
A
Explanation:
Fossil fuels were formed millions of years ago and are generally considered to be non-renewable because of the extreme amount of time it would take to renew them. They are the remains of fossilized plants and animals (hydrocarbons are in crude oil).
The statement that is false about fossil fuels is:
A) most of them formed thousands of years ago, and will take hundreds of thousands of years to renew.
What are Fossil fuels?Fossils are the remains or traces of ancient life that have been preserved by natural processes, from spectacular skeletons to tiny sea shells. Fossil fuels were formed millions of years ago and are generally considered to be non-renewable because of the extreme amount of time it would take to renew them. They are the remains of fossilized plants and animals (hydrocarbons are in crude oil).Fossil fuels include coal, petroleum, natural gas, and heavy oils. All contain carbon and were formed as a result of geologic processes acting on the remains of organic matter.
A) most of them formed thousands of years ago, and will take hundreds of thousands of years to renew.
Thus, the statement that is false about fossil fuels is A, i.e.
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The given question is incomplete:
The complete question is:
Which of the following statements about fossil fuels is false?
A) most of them formed thousands of years ago, and will take hundreds of thousands of years to renew.
B) they are the fossilized remains of ancient hydrocarbons, fixed by photosynthetic organisms, and then buried under sediment and transformed by pressure and heat.
C) they formed millions of years ago, and if renewal were possible, the process would take tens or hundreds of millions of years
D) A and B
E) B and C
lonic compounds form between elements that
are metals and elements that are____
Ionic compounds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. A covalent bond involves a pair of electrons being shared between atoms. I hope this helps you out.
Unspecialized human cells are called ____________.
Question 3 options:
cancer cells.
mitotic cells.
signal cells.
stem cells.
Answer:
stem cells
Explanation:
Stem cells differ from other kinds of cells in the body. All stem cells—regardless of their source—have three general properties: they are capable of dividing and renewing themselves for long periods; they are unspecialized; and they can give rise to specialized cell types.
Unspecialized human cells are known as stem cells. They have the unique ability to produce more cells of the same type, and under certain conditions, to specialize into more specific cell types.
Explanation:Unspecialized human cells are called stem cells. Stem cells are unique because they are unspecialized cells capable of renewing themselves through cell division, and under certain physiological or experimental conditions, they can be induced to become tissue or organ-specific cells with special functions. Stem cells serve as a sort of repair system for the body, replenishing adult tissues. In a developing embryo, stem cells can differentiate into all of the specialized embryonic tissues. In adult organisms, stem and progenitor cells act as a repair system for the body, replenishing adult tissues.
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what is the correct definition of power
Power is the rate at which work is done or energy is transferred in a system, and it is measured in Watts (W). It can also reflect an entity's ability to influence events or control its environment, particularly in social or governmental contexts.
Power in physics is the rate at which work is done or the rate at which energy is transferred to or from a system. It can be described mathematically as P = W/t, where P stands for power, W stands for work done, and t represents time. The SI unit for measuring power is the Watt (W). In a broader sense, power can also refer to an entity's ability to control its environment, interact with others, or influence events, especially in the context of government or social dynamics.
When power is constant, it remains the same as energy conversion or transfer happens over time. However, sometimes power can vary during the process of energy transfer, in which case, we regard power as the limit of the average power as time intervals approach zero.
Scientists have discovered and analyzed a huge number of fossils that represent a wide variety of species. What type of evidence for evolution is provided by the fossil record?
Answer:
The fossil record supports a "biological" type of evidence.
Explanation:
Fossils- this refers to the remains of prehistoric organism. It provides a trace of a once-living plant, animal or organism.
When it comes to evolution, fossils provide a biological type of evidence. This means that, it shows how organism have greatly changed from the past. When you study fossil records, you can compare it with the animal, plant or human structure nowadays. You can compare them side-by-side. So, you'd get that idea on how prehistoric things lived in the past and how they evolved up to the present day or became extinct.
Most of the fossils can be found on sedimentary rocks. You can also tell their ages according to which layer they belong. It is said that older layers consist of older fossils and they appear at the bottom while younger layers consist of younger fossils and they appear on top.
To play soccer, what type of
energy is needed by your muscles
so they will function properly?
A. electromagnetic
B. nuclear
C. chemical
After studying about recycling, members of Miguel’s
biology class investigated the effect of various
recycled products on plant growth. Miguel’s lab
group compared the effect of different aged grass
compost on bean plants. Because decomposition is
necessary for release of nutrients, the group
hypothesized that older grass compost would produce
taller bean plants. Four flats containing the same
species of bean plants (25 plants/flat) were grown for
5 days. The plants were then fertilized with compost
as follows: (a) Flat A: 450 grams of two-month-old
compost; (b) Flat B: 450 grams of four-month-old
compost; (c) Flat C: 450 grams of six-month-old
compost; (d) Flat D: 0 grams of compost. The flats
of beans were planted in the same type of soil. The
plants received the same amount of sunlight and
water each day. At the end of 30 days, the group
recorded the height of the plants in centimeters. What is the flaw in this experiment?
Answer:
i wish i could help dude sorry
Explanation:
Answer:
im good like dat
Explanation:
What one of the following items is a producer of pollution?
O A) forest
OB) oceans
OC) factories
OD) bicycles
Answer:
C. factories
Explanation:
Factories release several gases and waste thata re toxic to the environment and considered pollutants.
Which roles does pressure play during a volcanic eruption? Check all that apply.
Pressure decreases as magma rises.
Pressure traps dissolved gases in magma.
Pressure increases until the volcano explodes.
Pressure from rocks above causes new rocks to form.
Pressure from expanding gases forces magma through the pipe and vent.
Pressure decreases as magma rises.
Pressure increases until the volcano explodes.
Explanation:
The reason behind volcanic eruption is extreme weather, tectonic plates, climate change and magma movement. Under beneath of earths crust there are molten rock which is formed because of high temperature at core and they are melted and form a magma.
In magma there are various types of gas present. These gases are carbon dioxide, water vapor and also sulfur dioxide. These gases are stored in chambers of magma and it sealed beneath with lid of rock
Answer:
decreases
magma
pipe
vent
Explanation:
i think
Who is ernes hekel?
Answer:
Ernst Heinrich Philipp August Haeckel is a German zoologist, naturalist, philosopher, physician, professor, marine biologist, and artist who discovered, described and named thousands of new species, mapped a genealogical tree relating all life forms, and coined many terms in biology, including ecology, phylum, phylogeny, and Protista.
Explanation:Your welcome:)
Answer:
Who EXACTY are you talking about?????
Explanation:
Which of the following could be a DNA nucleotide?
A.phosphate, ribose, adenine
B.phosphate, ribose, uracil
C.phosphate, deoxyribose, uracil
D.phosphate, deoxyribose, adenine
Answer:
"phosphate, ribose, adenine" could be a DNA nucleotide
Explanation:
They are built up of the molecules known as nucleotide. Every nucleotide has a sugar group ,a nitrogen base and a phosphate group in it. For such type of nitrogen are present. The order of bases are determined by the genetic code or the instruction they are carrying with them. The DNA are generally found in the nucleus present in the brain. It has the total control of the body. It also keeps a record of the genetic information.
PLEASE HELP!! What is slab pull?
options:
the edges become denser and gravity acts on these raised edges, pulling them downward and away from one another
currents just beneath Earth's crust flow very slowly, causing movement in the plates above them
cooler, denser crust sinks into the mantle
folding and crumpling and sliding upward creating mountains
Answer:
The answer is cooler, denser crust sinks into the mantle.
Explanation:
We live on Earth's crust, its thinnest and outermost layer. This layer is made from many smaller pieces called tectonic plates. These plates are not immobile; they are constantly moving to get closer to or further from each other. One of the main driving forces for tectonic plates movement is slab pull. Not all plates have the same density or temperature; oceanic plates are usually denser and colder the continental ones. Slab pull occurs when these two plates come completely next to each other and the denser oceanic plate subducts the continental, which means that it starts sinking below it, towards the asthenosphere (upper mantle), so the correct answer is cooler, denser crust sinks into the mantle.
Answer:
It is cooler, and denser crust crust sinks into the mantle.
Explanation:
I know this because I had a quiz with these exact same answers and the correct one was: It is cooler, and denser crust crust sinks into the mantle.