What evidence does not support the evolution of chloroplasts and mitochondria from prokaryotic cells?
A. O Fossilized remains of archaebacteria
B. O Double membranes of the organelles
c. Similar methods of reproduction
D. O Presence of circular DNA
Answer:a
Explanation:
How do limiting factors most affect population size? stop population growth restrict population growth increase population growth decrease population growth
Answer:
restrict population growth
Explanation:
Limiting factors of a population are those factors that constrict the growth of the population. They often act as a check on population growth.
Some of these limiting factors are:
Food Water Habitat of organismsFrom the giving choices, limiting factors have been clearly shown to inhibit population growth.
The lack of some of these factors checks the population, thereby impeding its growth.
Answer:
How do limiting factors most affect population size?
restrict population growth
Explanation:
correct on edge unit test
Nitrogen is included in the
makeup of proteins and
nucleic acids. Also, it is often
the limiting nutrient for what
type of organism?
In an investigation to determine a factor that affects the growth of rats, a student exposed 100 rats of the same age and species to identical conditions, except for the amount of living space and the amount of food each rat received. Each day the student measured and recorded the weight of each rat. State one major error that the student made in performing this
Answer:
Violating 'Ceteris Paribus' {Other factors constant} assumption, as both food & space are varied (simultaneously)
Explanation:
Weight Growth is the dependent (effected) variable in this case. And, independent (causal) variables are food amount are living space respectively.
However particular independent factor's (food or living space) impact on dependent variable ie weight growth : can be determined only by - examining individual variable (food or living space) impact on weight growth. So, either of the two variables should be varied, & not both should be varied simultaneously.
This would imply depiction of each factor's clearer individual impact on the dependent factor.
Zero elevation is also known as
A. peak
B.profile
C.sea level
D.base
What are the levels of organization within the earth system
Answer:
Organelles -> Cells -> Tissues -> Organs and Organ Systems -> Organisims, Poupulation and Communties -> Ecosystems -> The Biosphere
Explanation:
The level of organization from lower to higher are atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, biomes and biosphere.
What is ecosystem ?An ecosystem is the unit of ecology, a structural and functional unit of where the living organisms dwell with each other and with their surrounding environment and the term was coined by A.G.Tansley, an English botanist, in 1935.
The structure of an ecosystem can be up two types such as Biotic Components and Abiotic Components, both the components are interrelated where the flow energy and components occur throughout the boundaries.
Biotic components belongs to all living components which can be classified into autotrophs, heterotrophs and saprotrophs. Autotrophs are the producers like plants which make food independently by photosynthesis.
The organisms that depend on other organisms for their food called as consumers or heterotrophs, it can be classified into primary consumers, secondary consumers and tertiary consumers.
Primary consumers are herbivores, Secondary consumers get energy from primary consumers can be either carnivores or omnivores. Tertiary consumers get energy from on secondary consumers.
Quaternary consumers prey on tertiary consumers, Decomposers include saprophytes such as fungi and bacteria depend on dead and decaying matter.
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what countries are developing destructive or defensive weapons in space?
Answer:
Anti-satellite weapons, which are primarily surface-to-space and air-to-space missiles, have been developed by the United States, the USSR/Russia, India and the People's Republic of China. Multiple test firings have been done with recent Chinese and U.S test program that destroy an orbiting satellite.
Said adenine=thymine and guanine=cytosine
I need help for a crossword
coal is found today where swamps used to exist
true or false
Answer:
⁶
Explanation:
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If the cost of food increases, what can we assume about it's production? A. It has gone down. B. It has gone up. C. Nothing and D. None of the Above
Answer:
B
Explanation:
Answer:
b
Explanation:
might be wrong
All the services that people use
and receive when they are away
from home are known as
A transportation.
B hospitality
C tourism.
D travel.
All the services that people use and receive when they are away from home are known as - option B. hospitality.
Hospitality is a term associated with the providing best care and services to their guests and anticipating their needs. The service includes various acts such as welcoming, receiving, hosting, or entertaining guests.
The key components of hospitality are:
ConsiderationHumilityThoughtfulGratefulEmpathyPoisedIn hospitality guest or traveler who is away from home receives and use, services are given by their host.
Thus, the correct answer is - B. hospitality.
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Mr. Chavez wants his class to prepare a procedure that would demonstrate cellular diffusion. Which of the following procedures would best demonstrate cellular osmosis?
A. A procedure that uses the skins of potato left overnight in oil
B. A procedure that uses a cluster of grapes left overnight in a high concentration of salt water
C. A procedure that uses a 2-liter bottle filled with oil and water and left overnight
D.A procedure that uses a banana that has been left overnight in milk
Answer:
B
Explanation:
The second option correctly shows the process of cellular osmosis.
When the grapes would be immersed in water, the molecules of water move across the cell membrane from the region of low to high solute concentration. Due to this, the water would leave the cells and diffusion of water from the cells of the grapes. Thus, option B is the correct answer.
In conclusion, the procedure that uses a cluster of grapes left overnight in a high concentration of salt water would BEST demonstrate cellular osmosis (Option B).
Osmosis refers to the movement of a solution (often water) across a selectively permeable membrane.This movement (osmosis) is due to the difference in solute concentrations on both sides of the semipermeable membrane.In osmosis, water molecules move from a region of low concentration of solutes (e.g., salt) to a region of high concentration of solutes.
In conclusion, the procedure that uses a cluster of grapes left overnight in a high concentration of salt water would BEST demonstrate cellular osmosis (Option B).
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1. What is the density of an object that has a mass of 1,470 g and volume of 42 mL?
Answer:below
Explanation:
ρ = m/V=
1470 gram/42 milliliter
= 35 gram/milliliter
= 35000 kilogram/cubic meter
Which term can be described as "many different species living together, interacting with each
other and with their physical environment?
A. a food chain
B. a food web
С. a nutrient cycle
D. an ecosystem
Answer: D
Explanation: community forms an ecosystem by its interaction with the abiotic environment. Species: A group of organisms that can potentially interbreed to produce fertile, viable offspring.
Help me identify the parts of this cell:
Answer:
1- membrane
2- ribosomes
3- mitochondrion
4- rough ER
5- dna
6- nucleolus
7- cytoplasm
8- nucleus
9- smooth ER
10- vesicles
11- golgi body
12- lysosome
Explanation:
Answer:
1- cell membrane
2- ribosomes
3- mitochondria
4- rough endoplasmic reticulum
5- deoxyribonucleid acid (dna)
6- nucleolus
7- cytoplasm
8- nucleus
9- smooth endoplasmic reticulum
10- vesicles
11- golgi apparatus
12- lysosome
Explanation:
Why do you think cells of the epithelial tissue are close together?
Answer:
Hope it help you
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Explanation:
The free surface of epithelial tissue is usually exposed to fluid or the air, while the bottom surface is attached to a basement membrane. The cells in epithelial tissue are very closely packed together and joined with little space between them. ... Epithelial tissue functions to absorb, secrete, and excrete substances.
REAL NAME - SHRESTH DUBEY
A developer wants to extend a golf course into a wetland. Outline
environmental arguments you could make against this plan.
Answer:
This is a wrong decision.
Explanation:
This decision is not right because by removing wetland means removal of habitat of millions of organisms living in that wetland. The advantages of wetland is more than golf course. Golf course is only used for sport purpose but wetland has a number of purposes i. e. it provides protection against floods which occurs due to climate change, absorb pollutants and enhances water quality.
Information on Osmosis
Answer: OSMOSIS
Explanation:
Osmosis is when solvent molecules move through a selectively permeable membrane into a region of a higher solute concentration, so that it would equalize the solute concentration on both side. (THINK: water always goes to salt, never the other way around)
What best explains how you can smell burned toast from another room?
what is one reason to support a national DNA database
nucleus is what? please healp
Answer:
The nucleus is the "brain" of the cell, the organelle responsible for producing ribosomes, as well as controlling all cell actions.
Explanation:
Answer:
A nucleus is a membrane-bound organelle that contains the cell's chromosomes. Pores in the nuclear membrane allow for the passage of molecules in and out of the nucleus.
Explanation:
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What would be most likely to happen if some of the proteins in one of the photo systems were to change shape due to rise in cell ph
Mrs. Gupta is the Cub Scout den mother. She is taking a troop of boys on a camp out and believes it will be easier if she schedules the outing to happen during the full moon. Last night she observed a third quarter moon. Approximately how many days will she have to wait before the full moon? 7 14 21 28
Answer:
The correct option is 21
Explanation:
First of all, it should be noted that the full moon is usually observed in the middle of the lunar month, which is usually 29 or 30 days, hence the full moon can be observed either on the 13th but most likely on the 14th and/or the 15th of the lunar month.
At the early days of the month, the new moon begins to form a crescent which appears and continues to get fuller (called waxing crescent) as the day goes by until half of the moon is noticed (usually after about seven days) on one side, this is known as the first quarter.
After half of the moon is noticed on one side, the moon continues to get fuller (called gibbous moon) until a full moon is noticed on the 14th/15th day. This full moon then starts waning or becoming smaller until the other half of the moon becomes visible while the initially seen half becomes invisible/clouded (this is called third quarter). This happens after another 7 days or on the 21st day. This half moon continues to get smaller (forming a waning crescent) until no moon is seen at the end of the month (around the 28 or 29th day) which is referred to the new moon.
Hence, we can see from the above that from the third quarter to a new full moon will go through the steps below
third quarter ⇒ new moon ⇒ first quarter ⇒ full moon
If each step takes about 7 days and there are 3 steps, the approximate number of days she has to wait before the full moon is 21 days.
true or false?
with explanation
Answer:
true
Explanation:
the body has the means of producing insulin but cannot due to either a hormonal imbalance or deficiency thus raising their levels
where is sugar removed and how can you tell
Explanation:
What you need to understand first, is the digestive system, after that, you'll probably be able to understand not only sugar, but other components of your food too.
It all starts at your mouth, you are going to do a lot of the job for the food to get to your stomach by chewing it. After it gets to your stomach, the digestion will do its job as the pH there is less than 7. After this process, the food is going to your intestine, and then, it's right here, that the sugar/carbohydrates you ate are going to get into your blood. After this, sugar is going to be used to create energy for your cells and body to work properly, with that, sugar is consumed and you can start the process all over again.
Which of these is a bacteria?
Group of answer choices
E-coli
HIV
Yeast
Zika
Answer:
im pretty sure its e-coli
Explanation:
Answer:
E-Coli is a bacteria
Explanation: I think zika is a virus, Hiv is a transmitted disease, and yeast is (I forgot) so I'm pretty sure its e-coli.
If a star is 300 light-years from Earth, how long does it take light from that star to reach Earth?
Answer:It would take 300 years.
Explanation: Light years are how much light travels in a year. Thus it would take 300 years for light to travel to earth if a star is 300 light years away.
Answer:
300 light years! :)
Explanation:
i hope this helps you! <3
Explain the differences between the structures of wind and insect pollinated plants and adjust the mark scheme.
Answer:
Unlike the typical insect-pollinated flowers, flowers adapted to pollination by wind do not produce nectar or scent. In wind-pollinated species, the microsporangia hang out of the flower, and, as the wind blows, the lightweight pollen is carried with it.
Explanation:
What is the term for an organism that makes its own source of chemical energy?
protist
B chloroplast
decomposer
D producer
Answer:
D thxs good luck on your test
Explanation:
1. Sodium is a silvery solid that reacts violently with water and chlorine. When they
combine to form the compound sodium chloride known as salt, there is a
fundamental change in the properties. Salt is often added to our food when
cooking and it is safe to eat. Which of the following statements supports the idea
presented?
Answer: Options are not given, here are the options.
. True to all compounds, they no longer have the properties of the elements
that makes them up.
B. True to some compounds, it maintains the properties of the elements that
makes them up.
C. True in all elements, it maintains its properties even after it combines with
other elements.
D. True to all elements, they have the properties after they are combined.
The correct option is D.
True to all elements, they have the properties after they are combined.
Explanation:
Elements are pure substances which can not be divide by any form of chemical means.
True to all elements, they have the properties after they are ccombine because elements contain atoms and atoms is the smallest indivisible units which retain chemical properties because chemical bonds are formed between the atoms of elements.