Answer:
Alkali MetalsExample(s)
Beryllium
Magnesium
Calcium
Strontium
Barium
Radium
Hope this helps! <3
Answer:
Sulfur
Explanation:
Sulfur will explode on contact with water.
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What is the name that represents the spread of cancer
Answer: metastatic cancer
Explanation:
What do you think the similarities are Between baking a cake and rocks
Answer:
When the baking temperature reaches 300 degrees Fahrenheit, sugar undergoes what is known as a Maillard reaction, a chemical reaction between amino acids, proteins and reducing sugars. The result is browning, which forms the crust of many baked goods, such as bread and baking a rock will just heat it up
Explanation:
Where do cells get the oxygen, water, and nutrients they
need to function?
how can you use the electron configuration to determine the number of valence electrons
Here, we are required to explain how the electronic configuration can be used to determine the number of Valence electrons.
The algebraic sum of electrons in the highest energy level in an electron configuration is the number of Valence electrons of the element.Valence electrons simply refers to electrons present in the outermost shell of an element.
Valence electrons simply refers to electrons present in the outermost shell of an element.The electron configuration is a representation of the arrangement of electrons in the atomic orbitals of an element.
The number of electrons present in the outermost shell as evident from the electron configuration can be used to determine the Valence electron in the elements.Fir instance: the electron configuration of potassium; 1s² 2s² 2p⁶ 3s² 3p⁵
The algebraic sum of electrons in the energy level 3 therefore is the number of Valence electrons.
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Which of the following BEST describes the results of the Embargo Act?
Answer:
there are no options but the embargo act of 1897 was a general trade embargo on all foreign nations
Answer:
The United States government closed all trade with Britain.
Explanation:
what is the definition of permeability
Answer:
the state or quality of a material or membrane that causes it to allow liquids or gases to pass through it.
Explanation:
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Roads are onen bum through forests for industrial purposes or as land is developed for residential and commercial needs. How would road construction
through a forest most likely affect the ecosystem?
Non-native species would replace native species
The number of primary consumers would increase
The natural succession of vegetation would change
All producers would be eliminated from the community
Answer:
The natural succession of vegetation would change
Explanation:
Originally, a forest is an area rich in biodiversity of species. It consists of different populations, and communities. According to this question, if a road is built through a forest for industrial purposes, this will negatively affect the biodiversity of such forest.
One notable occurrence that would result from this is the CHANGE IN THE NATURAL SUCCESSION OF THE VEGETATION. This change is the destruction of the ecosystem that occurs due to industrialization (road construction).
Why does a Chlamydomonas organism need to locate light
Answer:
the ability to detect the direction of light, to make the right turn and to stay oriented, is a direct consequence of the helical path of the organism, the orientation of its eyespot relative to the helix-axis, and the special shielding properties of eyespot and cell body.
Explanation:
hope this helps :)
Chlamydomonas is an algae. It is a biflagellate organism. It can swim and therefore, exhibit phototaxis. Chlamydomonas needs to locate light in order to move and grow.
What is Chlamydomonas?Chlamydomonas is a biflagellated algae which exhibits both positive and negative phototaxis. Phototaxis is the directional movement of an organism in response to light (stimulus).
The green alga, Chlamydomonas reinhardtii, can swim toward light (positive phototaxis) to increase photosynthesis, but it can also swim away from bright light (negative phototaxis) to avoid damage to molecular complexes required for photosynthesis.
Chlamydomonas grows at a faster rate with higher light intensity due to its photosynthetic nature, provided all other required nutrients for its growth are constant in all treatments. Light acts as an important factor for growth in these organisms.
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Why can you still see the moon during a lunar eclipse?
Answer:
you can see the moon because since the earth blocks sunlight
Earth's atmosphere bends sunlight and indirectly lights up the Moon's surface
Amoebas obtain food by wrapping the cell membrane around the food particles, creating a vesicle. The food is then brought into the cell. This process is known as ____________.
a. photosynthesis
b. exocytosis
c. endocytosis
d. osmosis
Answer:
endocytosis
Explanation:
Endocytosis is a cellular process in which substances are brought into the cell. The material to be internalized is surrounded by an area of cell membrane, which then buds off inside the cell to form a vesicle containing the ingested material.
Answer: Your answer is: C. (endocytosis)
Explanation:
which of the following contributes to air pullution
Answer:
Anthropocentric Sources
Explanation:
i wish this will be the answer for this question.
Describe the process of photosynthesis, including a brief description of the light reactions and the Calvin cycle. Be sure to include the materials that are needed for
photosynthesis, the materials produced by photosynthesis, and the role of ATP in photosynthesis.
Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
The nitrogen cycle is an example of a(n) (blank) cycle. The options are biogeochemical, decomposer, energy, water, denitrification, nitrogen fixation, nitrogen limitation, or photosynthesis.
Answer: Biogeochemical, Nitrogen Fixation, and Denitrification
Explanation: A biogeochemical cycle is the cycling of a nutrient through the biosphere and the geosphere. Nitrogen fixation happens when Nitrogen Fixating bacteria take in atmospheric nitrogen and release Ammonia as a biproduct. Denitrifying bacteria then take in the ammonia and break it down into nitrite, nitrate, and finally back into atmospheric nitrogen. The cycle then repeats.
The nitrogen cycle is an example of a biogeochemical cycle. The correct option is A.
What is biogeochemical cycle?The transport and transformation of chemicals in ecosystems is referred to as a biochemical cycle. Wetland hydrologic conditions have a strong influence on these.
These processes cause changes in the chemical forms of materials as well as material movement within wetlands.
These cycles transport the elements required for life to survive throughout the ecosystem.
They are essential because they recycle and store elements, as well as regulate vital elements through physical facets.
A biogeochemical cycle describes how an element or compound, such as water, moves between its various living and nonliving forms and locations in the biosphere.
Water, carbon, nitrogen, phosphorus, and sulfur cycles are all important biogeochemical cycles for living organisms.
Thus, the correct option is A.
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match the type of heat transfers to the example
Answer:
What example
Explanation:
CONFUSION
which organism is the site where liptids, proteins, and other materials are assembled for export out of the cell
golgi body
nucleus
ribosome
endoplasmic reticulum
Answer:
endoplasmic reticulum
Answer:
Need greater specificity to determine Golgi Body or endoplasmic reticulum
Explanation:
It's not an organism, both are organelles. The ER is the largest structure and has smooth and rough bodies with different functions. The last stop for further assmelby or alteratio is the golgi body. It's a cellular structure that packages proteins into membrane bound vesicles
WILL AWARD 90 POINTS!!
The light that is absorbed by a green leaf is
A) from the green portion of the electromagnetic spectrum
B) from the red and violet portion of the electromagnetic spectrum.
C) a mixture of green and yellow pigments
D) not used in photosynthsis
Answer:
B) from the red and violet portion of the electromagnetic spectrum
Explanation:
it is a Chlorophylls
Does respiration expend more energy more than photosynthesis?
Answer:
No,photosynthesis expend more energy than respiration
After a cell has been treated with a certain chemical the ribosomes stop functioning. Which of the following would be immediately affected by this change in ribosome function?
A)intracellular transport
B)protein synthesis
C)cellular respiration
D)excretion of metabolic wastes
Answer:
b
Explanation:
because ribosomes' first job is protein synthesis.
timeline of genetics
Answer:
Explanation:
5000 BC
Demonstrating some understanding of inheritance, humans worldwide begin to selectively breed more useful varieties of livestock and crops, including wheat, maize, rice and dates
400 BC
Greek philosophers contemplate the mechanisms of human inheritance. Aristotle believes that traits acquired during life, such as injuries, can be passed to offspring. He also develops the theory of “pangenesis”, which attempts to explain how these traits are transmitted via particles called “gemules” to the reproductive cells
1859
Charles Darwin, himself a proponent of pangenesis, publishes On the Origin of Species – his explanation of evolution by natural selection. Darwin provides a plethora of evidence on how valuable traits become more common in a population, but does not provide any explanation for the mechanism of transmission of these traits
1866
Augustinian monk Gregor Mendel publishes his work on the patterns of inheritance in pea plants. His meticulous studies mark the birth of modern genetics. Mendel’s findings escape the notice of other researchers for over three decades
1882
Chromosomes are discovered by German biologist Walter Fleming, and named with the Greek prefix meaning “colour” because they become stained when cells are dyed
1902
Mendel’s research is rediscovered by botanists in 1900. US and German cell biologists then independently notice the link between Mendel’s “units of inheritance” and chromosomes. They conclude that hereditary information is contained within chromosomes
1905
The term “genetics” is created by British biologist William Bateson. The terms “gene” and “genotype” surface in 1909.
Sex chromosomes are discovered following work on butterflies and beetles
1910
US scientist Thomas Hunt Morgan is the first to discover a sex-linked trait, while studying the fruit fly Drosophila. The trait for eye colour, on the X chromosome, is also the first gene to be traced to a specific chromosome
1925
Studies show that X-rays can induce mutations in the genetic material
1944
A trio of US geneticists revisit work from the 1920s and prove that, in bacteria, DNA is the hereditary material, and not protein as was previously suspected
1951
Clear X-ray diffraction images of DNA are captured for the first time by British researcher Rosalind Franklin
1953
Building on Franklin’s work, biochemist James Watson and biophysicist Francis Crick at Cambridge University, UK, determine the now famous double-helix structure of DNA. They are awarded a Nobel prize in 1962 for their efforts.
1961
Crick and South African geneticist Sydney Brenner report that trios of DNA bases – called nucleotides – each hold the instructions for one of the 20 amino acids that combine to form proteins
1973
US researcher Herb Boyer uses enzymes to cut DNA and splice it into bacterial plasmids, which then replicate producing many copies of the inserted gene. This heralds the dawn of genetic engineering
1978
Genetically modified bacteria produce the hormone insulin
1983
The gene for an inherited disorder (Huntington’s disease) is mapped to a chromosome for the first time
1986
Kary Mullis in the US develops the Polymerase Chain Reaction (PCR), which allows researchers to produce many millions of copies of DNA molecules in just a few hours
1990
The international Human Genome Project begins, with the goal of sequencing the entire human genetic code
Gene therapy is used successfully for the first time, to treat a four-year-old girl with the rare hereditary immune disorder adenosine deaminase deficiency
1994
FlavrSavr tomatoes, genetically modified to have a long shelf-life is the first GM product to go on sale in the US. GM tomato puree goes in sale in the UK in 1996
1996
Baker’s yeast is the first (non-viral) genome to be completed, followed by the worm Caenorhabditis elegans in 1998 and then the plant Arabidopsis and fruit fly Drosophila in 2000
2000
Completion of the draft human genome is jointly announced by US firm Celera Genomics and the Human Genome Project (an international public consortium). The full sequence – comprising 30,000 to 40,000 genes – is completed in 2003
2003
A tropical fish that fluoresces bright red becomes the first genetically modified pet to go on sale in the US
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what group of organisms are responsible for capturing energy within ecosystems ?
a. bacteria
b. consumers
c. producers
(I know its not b it has to be either a or b im confused)
Which absorbs more carbon dioxide: the atmosphere or the ocean?
Answer:
The atmosphere
Explanation:
Most of the air travels through the atmosphere tho very little travels through the ocean from air vents, or scuba diver oxygen tanks.
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Help i cant figure this out
This diagram shows cellular activity across a cell membrane.
Glucose in high concentrations
outside the cell
100
Cell membrane
till
bu
Glucose in low concentrations
inside the cell
which two processes does this diagram most directly model?
Homiestasis and transport of molecules
Explanation:I know
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Using personal feelings to explain or describe is being __________________________ .
Group of answer choices
influential
objective
factual
subjective
Answer:
subjective
Explanation:
subjective means opinion
or what you feel about something.
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The Doppler effect occurs when a source of waves and/or observer move relative to each other, resulting in the observer measuring a different frequency of the waves than the frequency that the source is emitting.
True
Or
False?
what are some environmental effects of open pit mining?
Answer:
pit mining exposes rocks that have been buried for millions of years and these rocks are crushed and when they are crushed they release radioactive elements and other air pollutants into the air.
Explanation:
got me 100 on edge
What evidence do similarities between fossil bones and modern organisms provide?
Answer:
It provides evidence for evolution and adaptations
Explanation:
EMERGENCY! PLEASE ANSWER ASAP!
Answer:
they suck up liquid
Explanation:
they drink the other bugs blood (cool huh)
what do many green plants have a part that grows up
Answer:
Chlorophyll gives plants their green color because it does not absorb the green wavelengths of white light. That particular light wavelength is reflected from the plant, so it appears green. Plants that use photosynthesis to make their own food are called autotrophs.
Explanation:
A bacterium, containing one circular DNA chromosome, undergoes four rounds of replication. How many new strands of DNA would result?
Answer:
The correct answer is 32 strands.
Explanation:
In bacterium, DNA replication is bidirectional which means it takes place in both directions. The origin of replication starts the replication, it is a specific sequence of nucleotides. Each strand of circular DNA acts as a parent strand to replicate its complementary new strand, resulting in two new DNA strands, one parent strand, and one new synthesized strand. So after the first round of replication, there are 4 strands formed.
Similarly, during the second round of replication each of the four strands will be synthesized lead to a total of 8 strands in the same manner. So by the same process in 3rd round will lead to 16 new strands and by the fourth round of replication 32 strands will be synthesized.
Thus, the correct answer is 32 strands.