Answer:
Tobacco effects the body in ways such as, unhealthy teeth, heart problems, premature aging of the skin, blood clots, and in some cases yellowing of fingertips.
Explanation:
When did the mass extinction occur? (Name the era and period)
Answer:
Explanation:
The first mass extinction is called the Ordovician-Silurian Extinction. It occurred about 440 million years ago, at the end of the period that paleontologists and geologists call the Ordovician, and followed by the start of the Silurian period. In this extinction event, many small organisms of the sea became extinct.
Answer:
at the beginning of this era
Explanation:
The diagram reveals that lipids and proteins are both parts of cell membranes. They have different functions because lipids work to А remove nucleic acids from the cell membrane, and proteins work to hold the cell membrane together. B hold the cell membrane together, and proteins move chemicals across the cell membrane. С stiffen the cell membrane, and proteins create fibers that attach to the ends of the lipids. D move chemicals across the cell membrane, and proteins work to store water in the cell membrane.
Answer:
There is no diagram in this question but the question can still be answered without it.
B. hold the cell membrane together, and proteins move chemicals across the cell membrane
Explanation:
The fluid mosaic model, which describes the structure of the cell membrane, reveals that it contains both lipids and protein constituents. These components, however, performs different functions in the cell membrane of organisms.
The lipid component of the cell membrane, which comprises of glycolipids and cholesterol, hold the cell membrane together while proteins called transport proteins help move chemicals across the cell membrane.
explain the identufication and nomeclature
During the second stage of aerobic cellular respiration, which molecule combines with the products of the first stage?
Among the microbes responsible for producing fermented foods, the two most prominent groups are the lactic acid-producing bacteria and yeasts that produce _________.
Answer:
Alcohol
Explanation:
Fermentation is a type of anaerobic respiration employed by organisms like yeast and certain species of bacteria. As stated in this question, YEAST and the BACTERIA that produces lactic acid as a product are the two major microbes that undergoes this fermentation process.
However, YEAST (a unicellular fungus) undergoes fermentation to yield alcohol and CO2 as its product. Yeast breaks down sugar molecules into ethanol (C2H5OH) and carbon dioxide (CO2) in its cells enabling it to be used in the production of fermented foods like cheese, beer etc.
What is the main difference between food chains and food webs?(1 point)
A. Food webs are more complex than simple food chains.
B. Food chains focus on energy transfers, but food webs do not.
C. Food chains focus on the internal energy cycles of animals, unlike food webs.
D. Food webs do not show connections between animals like food chains.
Question: "What is the main difference between food chains and food webs?"
Answer: "The best way to analyze this question would be to compare the two diagrams; when looking at a food chain, it is much easier to understand as to easily seeing the organism on the bottom (start) and the top (end) of the food chain, depending on its ecosystem. However, a food web on the other hand branches off into more complex details of every living thing connected to each other and how their roles effect the 'web'. So, this being said, I would say out of the options given above, Option A is the best choice."
Without genetic _____, natural selection could not occur.
A) variation
B) sameness
Answer:
Im pretty sure it's A
Explanation:
Protein found in red blood cells that carries oxygen
O A. positive Rh factor
O B. luminol
O C. plasma
O D. hemoglobin
Answer: hemogoblin
Explanation: Red cells contain a special protein called hemoglobin, which helps carry oxygen from the lungs to the rest of the body and then returns carbon dioxide from the body to the lungs so it can be exhaled. Blood appears red because of the large number of red blood cells, which get their color from the hemoglobin. Please give me brainliest :)
In guinea pigs, smooth coat(S) is dominant over rough (s) and black coat (B) is dominant over white coat (b). In the cross SsBb x SsBb, how many of the offspring will have a smooth black coat on average
Answer:
9/16
Explanation:
Smooth coat (S) is dominant over rough coat (s) and black coat (B) is dominant over white coat (b).
SsBb x SsBb
Offspring (You can also see the attached image for the Punnet's square analysis)
9 S_B_ = Smooth black coat
3 S_bb = smooth white coat
3 ssB_ = rough black coat
1 ssbb = rough white coat
Hence, on average, 9/16 of the offspring will have a smooth black coat
i need 2 paragraphs about which is better between organic food or gmo
Answer:
Most commonly found in crops such as soybeans, corn and canola, GMOs are designed to provide a higher nutritional value to food, as well as protect crops against pests. Organic foods, on the other hand, do not contain any pesticides, fertilizers, solvents or additives.
Organic is non-GMO because the use of GMOs is prohibited in organic production. For example, organic farmers cannot plant GMO seeds, organic livestock cannot eat GMO feed, and organic food manufacturers cannot use GMO ingredients.
From a health perspective, GMO food is no different than non-GMO food. In fact, they can even be healthier. Imagine peanuts that can be genetically engineered to reduce levels of aflatoxin, and gluten-free wheat, which would give those with celiac disease a healthy and tasty bread option
GMO foods are as healthful and safe to eat as their non-GMO counterparts. Some GMO plants have actually been modified to improve their
In mice, black fur color (B) is dominant over brown fur color(b). In a cross between two heterozygous mice. What is the probability of a black male mouse?
A
1/4
B
1/2
C
3/8
D
3/4
Answer:
vdjxvskevjveuvedigxeievxvexigdeu
Could emigration or immigration have played a major role in determining the size of the reindeer
population? Explain. Think about where these reindeer were and whether they could swim that far
Answer:
Yes.
Explanation:
Yes, emigration or immigration have played a major role in determining the size of the reindeer population in specific area because immigration is done by the animals in search of food. The animals moves from one region to another in search of food so due to this movement the population of reindeer decreases in that specific area. Reindeer are good swimmers so due to this ability they cross the vast Yukon River which is half mile wide.
Oxygen is released from the red blood cells into the:
A) Tissues
B)Lungs and exhaled
C)white blood cells
D)Bone marrow
Chromosome structure can be microscopically observed best duringShow Options a. telophase b. anaphase c. prophase d. metaphase 1
Answer:
c. Prophase
Explanation:
Because during prophase, chromosomes secrete water & become short& stout
In corn plants, tall (T) is dominant to
short (t). What are the chances of two
heterozygous tall plants producing
| short offspring?
Answer:
The probability that one of wear their offspring will be short is 1/4 .
Explanation:
Answer:
1/4
Explanation:
You have isolated a highly lethal toxin from an octopus that you have reason to believe binds with high affinity to the pore opening of a voltage-gated sodium channel. To determine the effect of toxin binding, you perform a _______ experiment.
Answer:
To determine the effect of toxin binding, you perform a Competitive Binding Experiment
Explanation:
Competitive binding experiments are very relevant when matters relating to cellular and or molecular toxicity are concerned.
They are used to determine the binding of a single concentration of labeled ligand in the presence of various concentrations of unlabeled ligand.
They are important because:
1. Validate a direct binding assay
2. Confirm whether or not a drug binds to the receptor
3. determine and explore how low-affinity drugs and receptors interact and it's resultant effects
Cheers
Describe the structure of vertebrate sensory organs!!!
Answer:
The vertebral column, or backbone, is made up of a series of repeating, or metameric, structures called vertebrae (singular, vertebra) that extend from the head to the tail along the dorsal (top) side of the body. The function of the vertebral column is to provide the central support structure of the endoskeleton, allowing an organism to hold its shape. It also serves to house and protect the spinal cord that that lies within the column.
Final Question:
Explain how biological diversity is increased by the origin of new species (a new species being created) and how it is
decreased by the natural process of extinction.
Answer:
the more the species the more diverse
Explanation:
when a species goes extinct it is gone and there is less species
What type of metamorphic rock is formed from only pressure like the
crayon shavings?
a. non-foliated metamorphic rock
b. foliated metamorphic rock
c. extrusive rock
d. clastic rock
Answer:
Foliated metamorphic rock
Explanation:
How do long term environmental impacts change subsequent
populations?
Answer:
Third effect... cause the organisms end up going extinct. A long-term environmental changes are... ice age, deforestation, urbanization, Earth's orbit, Sun's intensity, Global Warming, radioactive waste/pollution, extinction of species this could happen to anyone of the food webs.
Explanation:
hope this will help you
Which of the following is true about daughter cells?
A.They are genetically identical.
B.They each have their own nucleus.
C.They will most likely undergo mitosis.
D.all of the above
Cell division creates daughter cells. After DNA replication, mitosis produces two daughter cells. Therefore, option (D) is correct.
What are daughter cells?The cell that undergoes the process of cell division and results in the production of two daughter cells is referred to as the mother cell or the parent cell. The genetic make-up of the mother cell is maintained in both of the daughter cells that are formed when mitosis is carried out.
These freshly generated daughter cells have the potential to further divide and expand, so giving rise to a new cell population. This new cell population is formed by the division and expansion of a single parental cell and its daughter cell.
Therefore, all the above options are correct about daughter cells.
Learn more about mitosis, here:
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Help!
How many dolphins are usually in a pod??
25 Pointss!
Answer: Most pods contain anywhere from 2 – 30 dolphins depending on the species and the situation, however there are occasions when pods gather with other pods to form superpods of 100 or even several thousand dolphins!
Explanation:
Answer:
It really depends but around 5-20.
Explanation:
This is from and educational site by the way.
The genetic code of a strand of dna is determined by a specific sequence of
Answer:
genetic code, the sequence of nucleotides in deoxyribonucleic acid ( DNA) and ribonucleic acid ( RNA) that DETERMINES the amino acids sequence of proteins.
The genetic code of a strand of DNA is determined by a specific sequence of three nucleotides.
What are nucleotides?The sequence of nucleotides in deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) that determines the amino acid sequence of proteins is known as the genetic code.
The genetic code for each amino acid is a three-nucleotide sequence. A codon is a three-nucleotide sequence in messenger RNA that specifies a certain amino acid.
The sequences of DNA are made up of nucleotide bases. These bases are thymine, adenine, cytosine, and guanine. The letters A, C, G, and T in DNA determine our unique genetic code and offer instructions for the body to produce molecules.
Therefore, a precise sequence of three nucleotides determines the genetic code of a strand of DNA.
To learn more about nucleotides, refer to the link:
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What happens if chlorine is added to large amount of water?
(pls no hard answers)
Answer:
Any type of chlorine that is added to water during the treatment process will result in the formation of hypochlorous acid (HOCl) and hypochlorite ions (OCl-), which are the main disinfecting compounds in chlorinated water.
Explanation:
Helppppp pleaseeeeee
Answer:
Prokaryote: lack of membrane-bound nucleus, DNA in cytoplasm, single circular chromosome
Eukaryote: Membrabe-bound nucleus, DNA inside nucleus, multiple chromosome.
Explanation:
Prokaryotes are one of the two domains, which consists of organisms that do not possess a membrane-bound nucleus. Due to this fact, the genetic material (DNA) of prokaryotic organisms like bacteria is found located in their cytoplasm. The DNA is found as a single circular chromosome in a region called NUCLEOID.
On the contrary, eukaryotes are the second domains of organism characterized by their possession of a membrane-bound nucleus that houses their genetic material (DNA). All the DNA of an eukaryotic organism like plants, animals etc. are found inside its NUCLEUS. They are made up of multiple linear chromosomes.
Read the section "Seeds." Which sentence from the section states the main idea about seeds? A The life cycle of flowering plants begins with a seed. B The outside of a seed is called a shell. C The wind blows some, and others float on water. D The next phase starts when a seed gets someplace it can start growing.
Answer:
A The life cycle of flowering plants begins with a seed.
Explanation:
Seeds are structures found only in a group of plants called higher plants, comprising of gymnosperms and angiosperms. Seeds are the developed/fertilized ovules of a plant.
Seeds are basically the reproductive unit of the angiosperms, also called FLOWERING PLANTS i.e. plants that produce flowers (reproductive structures). This means that the life cycle of flowering plants begins with the germination of the EMBRYO in a SEED.
What is the name of the approach to biological research that integrates data from multiple levels of complexity
Answer:
systems (system biology)
Explanation:
Systems biology can be defined as a methodology whose interest is to understand the high scale levels of complexity in biology (i.e. organism level, tissue level, cell function, etc) by integrating information/data from different sources, and thus examine the interaction between biological components. This approach is contrary to reductionism, which is another approach used in biology research. Therefore, systems biology is a holistic approach aimed at modeling complex biology systems by applying computational and mathematical methods, enabling to understand biological systems.
Compare and contrast the cell membrane with the cell wall. *
Explanation:
For one, the cell wall is found only in plant cells, as it needs more protection. The cell wall is also found in the cells of plants, fungi, and bacteria. It can also be found rigid or smooth.
The cell membrane is found in both plant and animal cells. It controls what enters and leaves the cell. It surrounds the cytoplasm of the cell.
PLEASE HELP URGENT!!
Using the picture, explain how you can determine the Rick ages. How can scientists use these fossils to help age the rocks? Give an explanation on how one of these fossils was made.
As scientists, politicians and concerned citizens recognize the threat of global warming to the ongoing climate change, reductions in greenhouse gas emissions become the forefront of the discussions. To reduce the presence and persistence of greenhouse gases in the atmosphere their sources must be fully understood. Natural and anthropogenic greenhouse gases can impact their presence in the atmosphere. Which of the options best matches the anthropogenic sources and the greenhouse gas accurately?
Answer:
Methane- livestock farming and landfill decomposition
CFCs- refrigerants and propellants
Carbon dioxide- combustion of fossil fuels
Explanation:
Methane is released by anaerobic decomposition, which often occurs in landfills, and during the breakdown of cellulose, which occurs in the rumen (stomach) of some herbivores like cows. This increase in methane significantly contributes to greenhouse gas emissions. CFCs are entirely man-made, and are a chemical release as a byproduct of refrigerants, coolants, and propellants from items made prior to the 1990s.