Answer:
there are 8 in plants and 5 in animal cells
Explanation:
animal cells:
cytoplasm
nucleus
ribosome
mitochondrion
cell membrane
plants:
Nucleus
cytoplasm
cell membrane
cell wall
mitochondria
ribosomes
chloroplasts
permanent vachole
Answer:
Nucleus - the control centre of the cell
Ribosomes - responsible for creating proteins
Cytoplasm - gel-like substance where most of the chemical reactions in the cell take place
Mitochondria - the 'powerhouse' of the cell
Cell Membrane - controls what comes in and what goes out in a cell
As blood begins to circulate, it leaves the _________ from the left ventricle and goes into the aorta.
A: lungs
B: veins
C: heart
D: brain
As blood begins to circulate, it leaves the heart from the left ventricle and goes into the aorta. The correct option is C.
What is circulatory system?Blood vessels in the circulatory system transport blood away from and towards the heart.
Arteries transport blood away from the heart, while veins transport blood back to the heart.
The cardiovascular system transports oxygen, essential minerals, and hormones to cells while also removing pollutants such as carbon dioxide.
Blood flows from the body into the right atrium, then into the right ventricle, and finally into the pulmonary arteries in the lungs.
After picking up oxygen, blood returns to the heart via the pulmonary veins into the left atrium, then to the left ventricle, and finally to the body's tissues via the aorta.
Thus, the correct option is C.
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Which of these are considered long-term human-induced environmental changes? Check all that apply.
pollution
human-created mass extinction
eutrophication
non-sustainable harvesting
ozone layer destruction
global warming
Answer:human-created mass extinction and ozone layer destruction.
Explanation:
Final answer:
Long-term human-induced environmental changes include pollution, global warming, ozone layer destruction, non-sustainable harvesting, human-created mass extinction, and eutrophication. These activities lead to lasting impacts such as increased temperatures, sea level rise, loss of biodiversity, and disruption of aquatic ecosystems.
Explanation:
Long-term human-induced environmental changes include a variety of processes that have significant and lasting impacts on our planet's ecosystems. Among these, pollution, which introduces harmful substances into the environment, and ozone layer destruction, caused primarily by chlorofluorocarbons (CFCs), lead to increased UV radiation and affect both human health and ecosystems. Another critical issue is global warming, mainly due to the burning of fossil fuels which raises Earth's temperatures and sea levels, posing threats to biodiversity. The unsustainable harvesting of resources, which leads to overexploitation of ecosystems, and human-created mass extinction, as a result of habitat destruction and overpopulation, are also long-term changes that disrupt the balance of ecosystems. Additionally, eutrophication, which is the nutrient enrichment of water bodies often from agricultural runoff, leads to harmful algal blooms and dead zones that can devastate aquatic life.
Which of the following is not a factor that describes weather? A) precipitation b) sky conditions c) temperature d) elevation
Answer:
elevation
Explanation:
the other three regularly change and vary in the same location while elevation is something that describes the geography of the location
2. The Articles of Confederation were easy to change.
(5 Points)
True
False
Answer: True
Explanation:
Answer:
False
Explanation:
The articles of confederation was a document so therefore the person editing it has to write more and then add to another document so it was not easy because not only did the editor have to edit one document he had to edit multiple most likely.
Earth is made up of four main spheres. The geosphere refers to the rocks, minerals, and natural landforms that make up Earth’s surface. What do you think makes up the hydrosphere? Why is the hydrosphere important to life on Earth?
Answer:
The word hydro refers to water. The hydrosphere consists of all rivers, lakes, oceans, glaciers, and groundwater found on Earth. The hydrosphere is important because water is a basic necessity for living things. Also, aquatic life forms rely on bodies of water for their habitat
Each living thing in a food chain plays a role in the flow of energy in an ecosystem. To the right this is a picture of a simple food chain. The rabbit eats the carrots in the fox it’s the rabbit. What is the primary role of the rabbit in this food chain
A). To form a habitat
B). To find space to live
C). To be a source of water
D). To be a source of energy
The primary role of the rabbit in this food chain is to be a source of energy.
The primary role of the rabbit in this food chain is to be a source of energy.
In a food chain, energy flows from one organism to another as organisms eat and are consumed by other organisms.
The rabbit, as a herbivore, consumes the carrots in the food chain and serves as a source of energy for the fox.
The energy stored in the rabbit's body is then transferred to the fox when it eats the rabbit.
How many bronchi do we have?
Answer:
30,000
Explanation:
you welcom hope this helped you guys!
If two transverse waves have the same wavelength, the wave with the __________ has the greatest wave speed.
A. smaller amplitude
B. greater frequency
C. smaller frequency
D. greater amplitude
If two transverse waves have the same wavelength, the wave with the greater frequency has the greatest wave speed.
What are transverse waves?Transverse waves are waves that oscillate along routes that are perpendicular to the direction that the wave is moving forward. Transverse waves include electromagnetic waves (such as radio and light), water surface ripples, and seismic S (secondary) waves.
Transverse waves vibrate in a direction that is opposite to the wave's path of propagation. Because the particles move in a direction that is opposite to the direction of the wave, this sort of wave is given its name. Transverse waves may be electromagnetic or mechanical in nature.
An interference that moves through a medium, like a vibrating string, is known as a mechanical wave.
Therefore, the correct option is B. greater frequency.
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two transverse waves have the same wavelength, the wave with the greater frequency has the greatest wave speed. Thus, the correct answer is option B.
1. Wavelength (λ): The distance between successive crests (or troughs) of a wave.
2. Frequency (f): The number of wave crests (or troughs) passing a point per unit time.
3. Wave Speed (v): The speed at which the wave propagates through the medium.
Relationship Between Wave Speed, Wavelength, and Frequency:
The fundamental equation relating wave speed, wavelength, and frequency is:
v = f λ
Given:
- Both waves have the same wavelength (λ).
- To determine which wave has the greater wave speed, we compare their frequencies.
Calculation:
Since the wavelength (λ) is constant for both waves, the wave speed v depends directly on the frequency f:
v ∝ f
This means that as the frequency increases, the wave speed increases proportionally.
- Option B (greater frequency): Since v = f λ and λ is the same for both waves, the wave with the greater frequency f will have a higher wave speed v.
- Options A, C, and D: The amplitude of the wave (Options A and D) does not affect the wave speed. Similarly, a smaller frequency (Option C) results in a lower wave speed.
How might a person be affected if all the microorganisms living in his or her intestines died?
Answer:
Your gut and intestines would not return nutrients to your body therefore it would be very hard to survive for a long time. Basically, you would end up dying sooner or later.
Explanation:
If microbes were not in your body able to kill bacteria and return nutrients then all of the bad bacteria would eventually take control of your whole body and you would end up dying.
Hope this helps.
If all of the microorganisms in the intestine died, proper nutrient absorption and digestion would not occur, resulting in a wide range of digestive issues and other organ damage.
What is the role of microbiota in the body?Microbes in the body, such as those in the intestine, play an important role in maintaining homeostasis by performing a variety of functions. The microbiota living in the intestine facilitate the digestion process and the reabsorption of nutrients to maintain homeostasis by performing a variety of functions. Some of them produce vitamins that the body requires.
These microbes help kill pathogens and maintain a healthy body because proper digestion occurs in their presence, which stimulates a healthy body, brain, cardiac health, and so on. Without them, all of the functions would collapse, and eventually the entire system would be affected.
Therefore, in the absence of these microbes in the intestine, digestion, absorption, etc. will be affected.
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Some cancers are caused by mutations that stop certain proteins from working. The inactivation of what kind of protein could lead to cancer?
A. One that slows down the cell cycle
B. One that acts as a growth-reducing molecule
C. One that responds to growth-promoting molecules
D. One that speeds up the cell cycle
Answer:
D
Explanation:
Since cancer is uncontrolled cell growth, a protein that speeds up cell growth would make the most sense
When a battery is attached to an electrical circuit, the electrical energy produced comes from stored
energy.
A. electrical
B. chemical
c. nuclear
D. thermal
A colony of e coli bacteria asexually reproduce every 20 minutes. If the colony begins with 10 individuals how many individuals will be in the colony after 1 hour?
Answer:
80 E.coli bacteria are produced in 1 hour.
Explanation:
These bacteria reproduce asexually such as binary fission. In binary fission, the body of organisms is divided into two equal parts and each part becomes a new organism. They have the ability to reproduce after every 20 minutes. In the beginning there are 10 E.coli bacteria. So in 20 minutes, 10 individual becomes 20, in another 20 minutes the 20 bacteria becomes 40 and the last 20 minutes the 40 bacteria reproduce and reach the population to 80 bacteria.
What type of organism is a single cell, that is in warm water of a hot spring ?
a. plant
b. virus
c. animal
d. bacterium
The process in which a solid changes to a liquid is called
Answer:
melting
Explanation:
the solid melts into a liqiud
Answer: Melting
Explanation:
The solid is heated to become a liquid.
If the high projection is correct, what will need to happen to
ensure the human population has enough food?
O
A. Humans will have to focus more on ideas and services.
O
B. Humans will have to return to hunting and gathering.
O
C. Humans will have to find more efficient ways of growing crops.
To ensure adequate food for a growing human population, we must focus on sustainable food systems and more efficient crop production, increasing the environment's carrying capacity while minimizing environmental impacts.
Explanation:If the high projection of human population is accurate, to ensure there is enough food, humans will have to find more efficient ways of growing crops. With the burgeoning population, it is essential that sustainable food systems are employed to provide healthy diets while minimizing environmental impacts. This involves improving agricultural productivity, reducing waste, and developing technologies for better food production methods. The shift towards high-efficiency agriculture should ideally increase the carrying capacity of our environment, allowing it to support a greater human population sustainably. This tackles the challenges outlined in Cornucopian theory, which relies heavily on human ingenuity to overcome resource limitations. Moreover, as global demand for higher quality food grows, and natural habitats are converted to croplands, strategies to prevent the risk of species extinction and maintain biodiversity must be integral to food production planning.
Identify the nonspecific immune response described
______is characterized by heat redness, swelling and pain.
______is the 1st line of defense that prevents pathogens from entering body.
______causes elevated internal temperatures making a less hospitable environment for
pathogens.
______are white bloods cells that try to consume pathogen.
Options are Fever- Inflammation-Phagocytes-Skin
The initial line of defense against pathogens entering the body is the nonspecific immune response, 1- Inflammation, 2-Skin, 3- Fever, 4-Phagocytes.
What is a nonspecific immune response?Which is marked by heat, redness, swelling, and discomfort.key indicators of inflammation five recognizable symptoms are produced by the body as a result of inflammation.
A tumor (swelling, edema), heat flushing (redness), discomfort, and function loss. Vascular dilatation results in heat and flushing, and an increase in local blood flow gives the area a crimson hue.
The nonspecific immune response, which is marked by heat, redness, swelling, and discomfort, is the body's first line of defense against infections.
Therefore, in nonspecific immune response, 1- Inflammation, 2-Skin, 3- Fever, 4-Phagocytes, is characterized.
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Answer:
1- Inflammation
2- Skin
3- Fever
4- Phagocytes
Before the chickenpox vaccination was available, children were often purposely exposed to the virus at
young age. What was the reason for doing this?
ANSWER: Children were purposely exposed to the virus at a young age because once this virus enters in a human body, the body gradually develops immunity and a resistance to this virus, and hence, later after it's cure there are almost no chances of getting the virus of chickenpox again in a same body.
What grows in a fertilized cone?
Answer:
Fertilization Follows. During the spring of the female cone's second year, the male and female gametes are ready. The pollen grows a pollen tube, which enters a little hole in the ovule's skin near its basal end, called the micropyle. The tube enters the ovule, and the sperm goes down the tube and into the ovule.
Answer:
The familiar woody cone is the female cone, which produces seeds. The male cones, which produce pollen, are usually herbaceous and much less conspicuous even at full maturity. ... The female cone (megastrobilus, seed cone, or ovulate cone) contains ovules which, when fertilized by pollen, become seeds.
Explanation:
Which cells are larger and ontain a nucleus?
o ovo
archaea
prokaryote
eukaryote
virus
Which of the following is not an
effect of meiosis?
Causes more genetic diversity in sexually
A reproductive species.
Rrepuces the number of offspring affected
B by genetic mutations,
Censures the same number and types of
hones
in indi dua
ID due to vardability in individual strengths
et adual
o improves the chances
Answer:
Which of the following is not an effect of meiosis?
Causes more genetic diversity in sexually
Explanation:
Final answer:
Option B, which suggests that meiosis reduces the number of offspring affected by genetic mutations, is not an effect of meiosis. While meiosis increases genetic diversity, it does not inherently reduce the prevalence of mutations in offspring.
Explanation:
The question asks about the effects of meiosis and which of the given options is not an effect of this process.
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells, each with half the number of chromosomes of the original cell. Genetic diversity is one of the key results of meiosis, as it brings together chromosomes from each parent through sexual reproduction. This diversity is achieved through mechanisms like crossing-over, the independent assortment of chromosomes, and random fertilization.
However, option B suggests that meiosis reduces the number of offspring affected by genetic mutations, which is not necessarily true. While meiosis can lead to the creation of new genetic combinations that may impact the prevalence of certain genetic traits, including mutations, this process does not inherently reduce the number of offspring affected by genetic mutations. Mutations may occur during meiosis as well as other stages of life, and their effect on offspring can range from neutral to harmful, or sometimes even beneficial.
Therefore, the option which is not an effect of meiosis is B: "Reduces the number of offspring affected by genetic mutations."
What effect did the Montreal Protocol have on Earth's ozone? (1 point)
It decreased ozone in the troposphere
It decreased ozone in the stratosphere.
It increased ozone in the stratosphere
It increased ozone in the troposphere
Answer:
increase ozone in the stratosphere
Answer:
It decreased ozone in the stratosphere.
explination:
The Montreal Protocol on Substances that Deplete the Ozone Layer is a global agreement to protect the Earth's ozone layer by phasing out the chemicals that deplete it. This phase-out plan includes both the production and consumption of ozone-depleting substances.
How does replication ensure that cells have complete sets of DNA
Answer:
Explanation:
During replication a new strand of DNA is synthesized when the other strand is a template to guide the process. Every time the order of the bases in preserved so that DNA can be accurately replicated over and over with identical genetic information.
I just need 1 and 5 can you help me pleaseee
A flood that covers and meadow and drowns animals and a late frost that kills young
plants are examples of how ___________ can affect the size of a population.
Answer:
weather
Explanation:
A flood that covers a meadow and drowns animals and a late frost that kills young plants are examples of how ____ can affect the size of a population.
They are all examples of how Weather can affect the size of a population : Weather
Effects of Weather conditionsWeather conditons of an ecosystem plays a vital role in the growth and survival of populations of species in the ecosytem. Harsh or adverse weather conditions such as heavy flooding, and severe drought conditions adversly affects the population of species in a ecosystem.
Hence we can conclude that They are all examples of how Weather can affect the size of a population
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has amplitude, wavelength, and frequency
O
light
O
sound
O
light and sound
cellular DNA is stored in the blank, an organelle that also acts as the brain of the cell and directs all cellular activities
Answer:
nucleus
Explanation:
nucleus is an organelle that is aka "brain of the cell"
Answer:
Nucleus
Explanation:
Nucleus is an organelle that controls all cells activities
an amoeba is a single celled organism that feeds on algae plant cells and bacteria when an amoeba feeds it first makes contact with the food particle next the amoeba starts to surround the particle once the particle is completely engulfed it is surrounded by a layer of the amoebas membrane forming a vasicle the ph in the vesicle is then lowered and the contents are degraded. what type of transport is involved in this process? A exocytosis B endocytosis C passive transport D diffusion
Answer:
B endocytosis
Explanation:
Amoeba is madeup of single cell and having a true nucleus or membrane around the nucleus. Amoeba belongs to kingdom protista because it has some characteristics of animals such as it can move from one place to another. Amoeba used phagocytosis which is a type of endocytosis in which large substances are entered into the cell.
A scientist is studying an organism under a microscope. The organism is eukaryotic, unicellular, and contains chloroplasts that allow
it to perform photosynthesis.
The organism described above could most likely be classified as a
A. bacterium
OB. protist
OC. plant
OD. fungus
Reset
Submit
Answer:
OB. protist
Explanation:
Protists belong to kingdom protista. These organisms madeup of a single cell and having membrane around the nucleus. Some protists are like fungi, some are like plants and some of them are like animals. The plants like protist such as algae have the ability to make their own food like plants due to the presence of chlorophyll in the process of photosynthesis.
Answer:
Protist
Explanation:
What is thermohaline circulation?
Answer:
Thermohaline circulation is a part of the large-scale ocean circulation that is driven by global density gradients created by surface heat and freshwater fluxes.
Explanation:
A seed was discovered and, when planted, grew to be a large flowering plant. This organism is a single cell that was isolated from the human body, has no nucleus, and was causing the patient to be ill.
Answer:
- A seed that when planted produces a flowering plant is an angiosperms.
- The single and non-nucleated cell that can make humans sick is a bacteria.
Explanation:
1. Seed is a germinal structure consisting of the embryo of plants called spermatophytes, a division of the embryophyte clade, capable of reproduction by the production of seeds.
Within the plants spermatophytes are found:
Gymnosperms, from which conifers descend.Angiosperms, or plants with flowers.The seeds that spermatophytes produce are embryonic structures of the plants, which have a rigid external cover, that in suitable conditions can hatch to develop as adult plants.
2. Bacteria are unicellular prokaryotic organisms, whose cellular characteristics include being devoid of nuclei, not possessing most organelles, and possessing free circular DNA in their cytoplasm.
These prokaryotic organisms are considered pathogenic, because of their potential ability to produce disease by entering other living organisms. A cell removed from the human body, unique, without a nucleus, and which can make a patient ill is certainly a bacteria.
Answer:
Bacteria
Explanation: