Answer:
Color, luster, streak, hardness, and cleavage
Explanation:
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Answer:
Exocytosis definition and purposes. Exocytosis is the process by which cells move materials from within the cell into the extracellular fluid. Exocytosis occurs when a vesicle fuses with the plasma membrane, allowing its contents to be released outside the cell.
Explanation:
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Please help me identify the parts of this cell: No trick answers please
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:
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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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
Organize the following groups of elements in order from least to most electronegative (Chromium, Zinc, Tungsten, lodine ) piz help me
Answer:Zinc 1.65
Chromium 1.66
Tungsten 2.36
Iodine 2.66
Zinc 1.65, Chromium 1.66, Tungsten 2.36 and Iodine 2.66
What is electronegativity?The term "electronegativity" describes how attracted an atom is to the bonding electrons in molecules as opposed to other atoms.
American chemist Linus Pauling developed a set of dimensionless variables known as electronegativity values that vary from a little under one for alkali metals to a maximum of four for fluorine.
Electropositive elements are those that are on the left of the periodic table and have low electronegativities. We shall use the key attribute of the order of electronegativities F > O > N > C to explain the chemical properties of organic molecules.
Therefore, Zinc 1.65, Chromium 1.66, Tungsten 2.36 and Iodine 2.66.
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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:
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:
3. What are 3 examples of proteins and what functions do they serve in organisms' bodies?
Answer:
ADN, ARN and Cytoplasma
Explanation:
Protein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation. Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus. ... After the mRNA is processed, it carries the instructions to a ribosome in the cytoplasm.
Answer:
HORMONES are chemical-signaling molecules, usually small proteins or steroids, secreted by endocrine cells that act to control or regulate specific physiological processes, including growth, development, metabolism, and reproduction. For example, insulin is a protein hormone that helps to regulate the blood glucose level.
ENZYMES which are produced by living cells, are catalysts in biochemical reactions (like digestion) and are usually complex or conjugated proteins. Each enzyme is specific for the substrate (a reactant that binds to an enzyme) it acts on. The enzyme may help in breakdown, rearrangement, or synthesis reactions.
TRANSPORT Carry substances in the blood or lymph throughout the body
Explanation:
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
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.
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Question 19 (2 points)
Enzymes are not considered to be reactants in a chemical reactions because
Answer:
they are needed for activation energy.
Explanation:
If they are needed for activation energy. Just like you don't say chloroplasts are a reactant in photosynthesis.
What is the difference between facilitated diffusion and active transport?
Facilitated diffusion uses ATP and moves substances with the concentration gradient; active transport does not.
Active transport uses ATP and moves substances against the concentration gradient; facilitated diffusion does not.
Active transport uses ATP and does not require a carrier protein; facilitated diffusion does neither.
Facilitated diffusion uses ATP and requires a carrier protein; active transport does not.
Answer:
Active transport uses ATP and moves substances against the concentration gradient; facilitated diffusion does not.
Explanation:
Active transports moves against the concentration gradient (hence why it needs energy or ATP to do so, its going "against the grain"). Facilitated diffusion does not require ATP but does something require carrier proteins during passive transport.
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
what are the steps for the respiratory system?
Answer:
Other components of the respiratory system conduct air to the lungs, such as the trachea (windpipe) which branches into smaller structures called bronchi. The process of breathing (respiration) is divided into two distinct phases, inspiration (inhalation) and expiration (exhalation).
Answer:
The primary organs of the respiratory system are the lungs, which function to take in oxygen and expel carbon dioxide as we breathe.The gas exchange process is performed by the lungs and respiratory system. Air, a mix of oxygen and other gases, is inhaled.In the throat, the trachea, or windpipe, filters the air. The trachea branches into two bronchi, tubes that lead to the lungs.Once in the lungs, oxygen is moved into the bloodstream. Blood carries the oxygen through the body to where it is needed.Red blood cells collect carbon dioxide from the body’s cells and transports it back to the lungs.An exchange of oxygen and carbon dioxide takes place in the alveoli, small structures within the lungs. The carbon dioxide, a waste gas, is exhaled and the cycle begins again with the next breath.The diaphragm is a dome-shaped muscle below the lungs that controls breathing. The diaphragm flattens out and pulls forward, drawing air into the lungs for inhalation. During exhalation the diaphragm expands to force air out of the lungs. Adults normally take 12 to 20 breaths per minute. Strenuous exercise drives the breath rate up to an average of 45 breaths per minute.
what is one reason to support a national DNA database
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.
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.
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.
How can you decrease your height in under a week?
Analyze the diagram below. Which of the terms best describes it?
Answer:
disaccharides
Explanation:
they are formed by linking 2 monosaccharides through condensation
monosaccharides are simple sugars or glucose
Disaccharides are those types of carbohydrates that, when hydrolyzed by acids or enzymes, produce two molecules of monosaccharides that may or may not be identical. Thus, option A is correct.
What is important in formation of disaccharides?Mono- and disaccharides, sometimes known as sugars, make up a significant portion of the carbohydrates included in food.
Disaccharides function similarly to other carbohydrates as a source of energy for the body.
When we consume foods containing disaccharides, our systems convert them into monosaccharides, or simple sugars, for absorption in the small intestine.
This condensation process is also referred to as a dehydration reaction, since a water molecule is released during this process.
Therefore, disaccharide is formed from monomeric subunits.
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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:
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.
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.
Inheritable genetic variations may result from____
mutations caused by factors in you environment
mitosis may cause new genetic combinations
replication errors
Answer:
Inheritable genetic variations may result from mutations caused by environmental factors
Explanation:
Because mutations are caused by environmental factors.
Nitrogen is included in the
makeup of proteins and
nucleic acids. Also, it is often
the limiting nutrient for what
type of organism?
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
coal is found today where swamps used to exist
true or false
Answer:
⁶
Explanation:
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Zero elevation is also known as
A. peak
B.profile
C.sea level
D.base
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 property of water makes it mix well with most solutes?
A. Cohesion and Adhesion
B. High Heat Capacity
C. Universal solvent
Answer:
it would be C. Universal solvent