Answer:
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confused ash somebody help please.
Answer:
1. This kingdom rose to fame when its ruler made a journey to Mecca, Saudi Arabia : Mali .
2. This kingdom is known for its great city with a stone place : Zimbabwe
3. This was the first West African kingdom to control the gold trade : Ghana
4. Timbuktu was part of this kingdom : Songhai .
what is it called when light passes directly through cells?
Explanation:
Light microscopes allow for magnification of an object approximately up to 400-1000 times depending on whether the high power or oil immersion objective is used.
Light microscopes use visible light which passes and bends through the lens system.
Electron microscopes use a beam of electrons, opposed to visible light, for magnification.
Electron microscopes allow for higher magnification in comparison to a light microscope thus, allowing for visualization of cell internal structures.
Key Terms
resolution: The degree of fineness with which an image can be recorded or produced, often expressed as the number of pixels per unit of length (typically an inch).
electron: The subatomic particle having a negative charge and orbiting the nucleus; the flow of electrons in a conductor constitutes electricity.
Identify what all organic compounds have in
common, and list the four principal classes of
organic compounds.
Discussion 1: Evolution
Briefly describe Darwin's theory of natural selection and discuss how this theory differs from
amarck's ideas about evolution. Why does Darwin's theory work while Lamarck's does not?
What do you think is the difference between science and religion in describing humans' place
in the worldDoes it make a difference for humans if we evolved versus if we were created? In
what ways?
Answer:
Population Variability
Deriving Genotypic and Allelic Frequencies
Hardy-Weinberg Equilibrium
Evolutionary Genetics
Darwin's Theory of Natural Selection
Darwin's Theory of Evolution by Natural Selection
More individuals are produced each generation that can survive.
Phenotypic variation exists among individuals and the variation is heritable.
Those individuals with heritable traits better suited to the environment will survive.
When reproductive isolation occurs new species will form.
These are the basic tenets of evolution by natural selection as defined by Darwin. The following is a quote from Darwin.
"Variation is a feature of natural populations and every population produces more progeny than its environment can manage. The consequences of this overproduction is that those individuals with the best genetic fitness for the environment will produce offspring that can more successfully compete in that environment. Thus the subsequent generation will have a higher representation of these offspring and the population will have evolved.
Mutualism involves both biotic and abiotic factors true or false
Answer:
If both species benefit, the symbiosis is mutualism.
Explanation:
How are the cells in the respiratory system helping with kicking a ball? Do some have specific jobs?
How many groups are in the modern periodic table?
O 12
O 18
O 22
O 24
Answer:
18
Explanation:
18 groups and 7 periods in the modern periodic table
IGLNVI-what word is this unscramble
Answer:
IGLNVI-what word is this unscramble
LIVING1. Air enters the upper respiratory system through the ______________________________, which are the openings that lead into the nasal cavity. The air moves through passageways that are formed by the ______________________________, which protrude into the cavity.
Answer:
A. Nostrils
B.Larynx
Explanation:
Answer:
nostrils larynx
Explanation:
please mark brainiest hope it works out for you
Which option is a light wavelength that chlorophyll does NOT absorb?
A. Red
B. Violent
C. Yellow
D. Green
Directions: Identify the models in each picture as an element or a compound. and there's more to it just answer the rest pls I need this test done this is my 1 overdue and I'm giving 44 bc i did 100 and i lost my points
Answer:
??
Explanation:
How is transmitted light and reflective light similar what determines if a light is transmitted or reflected
Answer:
mainly look at the eletrons because they will be different if one is transmitted and one is reflected.
Explanation:
Which statement is true?
Insects preserved in hardened tree sap are not fossils.
Recent remains of plants or animals on topsoil are fossils.
Petrified skeletal bones from an ancient mammal are not fossils.
Imprints of leaves or footprints in sedimentary rock are fossils.
Explanation:
Recent remains of plants or animals on topsoil are fossils.
The statement 'recent remains of plants or animals on topsoil are fossils' is TRUE about fossils.
What are fossils?Fossils are dead decomposed organisms (either plants or animals) that once lived on the topsoil of the Earth.
The existence of fossils is fundamental for extracting certain fuels of the Earth (e.g., coal is made from dead plants).The fossil record is also fundamental to obtain a piece of evidence for evolutionary mechanisms.In conclusion, the statement 'recent remains of plants or animals on topsoil are fossils' is TRUE about fossils.
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The product of a number and 5
Roots:
hold the plant in the ground
make food using water and minerals
carry water to leaves
help plants stand up straight
Answer:
hold the plant in the ground
Explanation:
because if the plant didn't have roots 8t would just fly away.
what is h20 and how is it used around america
Answer:
H2O is the chemical equation for water. It is used for people to drink to carry out cellular processes.
A professor at the University of Missouri wrote the second article. Read the article and list three conclusions the author drew about human involvement in climate change. Write two to three sentences describing the evidence the author cited to explain each of his conclusions.
Answer:
For many scientists, policymakers, and individuals, the warming of the Earth has been a source of considerable discussion and worry.
Carbon Dioxide: >100 years
Black Carbon: 10 days
Methane: 10 years
Tropospheric Ozone: 10–100 days
Explanation:
meet zwbjsjysom and the theorems are not the answer
What level of organization would we use to classify a crocodile
Answer:
A crocodile is a reptile
Explanation:
crocodiles are cold blooded not only that but they also have the attribute's of reptile like scales.
Which of the following best describes how a liver cell and skin cell have the exact same DNA
sequence and yet look different and perform different functions? (1 point)
O The cells mutate during transcription.
O The cells discard the DNA that is not in use.
O The tRNA uses a different sequence in each cell during transcription.
O The proteins are expressed differently in each cell.
Though not exact, the statement that best describes how a liver cell and skin cell have the exact same DNA sequence and yet look different and perform different functions is the last one, the DNA is expressed differently, which leads to proteins being "expressed" differently in each cell.
During early embryonic development, the few cells that make up our organism are totipotent in nature. A totipotent cell is one with the capability to produce any tissue in the human body. All the cells that later make up our bodies are derived from these.
This explains that although not all of the DNA sequence is expressed at all times, the DNA is still present in the cell, meaning that option 1 is false. Option 2 is also false due to the fact that although mutations can occur from time to time, they are certainly not a common process nor are they normal. Finally, option 3 is false given that tRNA's only role is to apport the correct amino acid for each sequence.
As development continues, cells specialize into specific tissues. They do this by compressing certain areas of their DNA, making it unreadable and therefore limiting the expression of that area of the genetic code. This causes the proteins that are synthesized to be unique for each type of tissue.
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Answer:
The proteins are expressed differently in each cell.
Explanation:
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FREE BRAINLIEST TO THE RIGHT ANSWER
The correct is C: A Scientific theory may or may not be true, but a conclusion is proven to be true.
What is an example of a SCIENTIFIC observation?
-most people drive red cars
- The rock is smooth and gray
- what is the best brand of soap?
Answer:
The rock is smooth and gray
Explanation:
FREE BRAINLIEST
select all that apply
Answer:
All human require water to survive Rian is human and so he need water to surviveAnswer:
A. , B. and D. should be inductive reasoning
Explanation:
which part of cellular respiration provides most of the energy for cheetahs to run?
Answer:
When the Cheetah starts running, it generates its energy initially by aerobic respiration, where glucose is oxidised in the presence of oxygen, resulting in generation of ATP
HELP HELP HELP PLEASE
List 3 different decomposers and explain the important role of decomposers.
Answer:
fungi, bacteria, and invertebrates
Explanation:
Answer:
Fungi, worms, and pillbugs
Explanation:
Decomposers are important because they turn dead organisms into nutrients which the producers can take in.
Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!
During one cycle, the sodium-potassium pump transports
Answer:
The sodium-potassium pump cycle
The sodium-potassium pump transports sodium out of and potassium into the cell in a repeating cycle of conformational (shape) changes. In each cycle, three sodium ions exit the cell, while two potassium ions enter.
Explanation:
Which of the following are sustainable wastewater methods?
1. Graywater used to water yards
II. Chlorination and ozonation disinfection
III. Use of artificial wetlands
Answer:
1, II, and III
Explanation:
The one that are sustainable wastewater methods are chlorination and ozonation. The correct option is B.
What is chlorination?The procedure of adding chlorine to potable water to inhibit bacterial, microbes, and viruses is known as chlorination. To achieve safe levels of chlorine in drinking water, various processes can be used.
One of the most powerful oxidants is ozone, a gas composed of three oxygen atoms (O3).
Ozonation is a sort of advanced oxidation process that generates highly reactive oxygen species capable of attacking a wide range of organic compounds as well as all microorganisms.
Drinking water purification processes include chlorination and ozonation.
When compared to chlorination, ozone has a higher disinfection effectiveness against bacteria and viruses.
Furthermore, the oxidizing properties can reduce the concentration of iron, manganese, and sulfur, as well as reduce or eliminate taste and odor issues.
Thus, the correct option is B.
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If a student starts a pure culture of Geobacter metallire ducens with zero cells, how much cells should they
expect after 7 generations.
O a. 128
O b. 0
O c. 10
O d. 1992
20.The most common starting pathway for the catabolism of sugars is?
Select one:
O a Fermentation
O b. Embden-Meyerhof Pathway
O c. Krebs cycle
O d. Glycolysis
O e. Electron Transport Chain
21.Bacteria growing in Greann digestive track would less likely divide by
Select one:
O a budding
O b. binary fission
O c. sporulation
O d. fragmentation
Answer:
question20
glycoysis
question21-budding
HELP ME OUT PLEASE!
Create Cell Analogies: for example, compare a cell to a castle
The cell wall is like the walls because it protects the castle
The cell membrane is like the drawbridge because it lets certain things in and out The vacuoles are like the storage rooms because they both store things
Your turn! Pick an item like an airplane, basketball gym/baseball field, house, or school to complete your own analogies below. You can pick different organelles as well. See examples above.
5) The_____is like_____because_____
6) The_____is like_____because_____
7) The_____is like_____because_____
part 2
8)___________
9)___________
10)___________
11)___________
omg... that's really hard and i don't know what the answer is.
Explanation:
by the way, thanks for points
What causes a plant to wilt?
A. Vacuoles fill up
B. Vacuoules not strong enough food
C. Drop in turgor pressure
D. Lysosome digestion
Answer: Drop in turgor pressure
Explanation: Turgor pressure is caused by the amount of water maintained within the vacuole. The more pressure from water, the more it will push up against the cell wall within the stem and cause the plant to stand upright