Answer:
Explanation: 100% (2 ratings) The LD50 stands for Lethal Dose 50%. The LD50 value represents the amount of a toxin or substance required to kill 50% of the tested population. It is also known as the median lethal dose and generally expressed as the mass Which of the following is not a portal of entry for pathogens? a. mucous membranes of the respiratory tract b. mucous membranes of the gastrointestinal tract c. skin d. blood e. parenteral route 5 All of the following can occur during bacterial infection. Which would Staphylococcal enterotoxin: LD50 = 1.35 mg/kg 3) Shiga toxin: LD50 = 250 ng/kg Which is the least potent toxin?
Please help me answer this. thanks.
Answer:
is respect
Explanation:
it's mean you give some respect
what process most directly allows parents to pass genes into offspring
Answer:
Sexual Reproduction
Explanation:
When two parents are involved in reproduction, it is referred to as sexual reproduction. When two parents pass on their genes to offspring, it allows for more mixing of genes and variation in the population. The prefix "a" in asexual reproduction indicates "without", and it only involves one parent budding or dividing to make an exact copy of itself. The processes of mitosis and meiosis refer to specific cell divisions necessary for copying genetic material, but they are not involved in the specific passing on of genes to offspring.
DDT was banned for use in the US because over the long run it is
Answer:
0 answer
Explanation:
The presence of what cellular structure distinguishes a plant cell from an animal cell?
A. Chloroplast
B. Cell Membrane
C. Nucleus
D. Mitochondria
Explain mitosis and miosis in a simpler way (easy words lol)
Mitosis is the division of a cell into two daughter cells that are genetically identical to the parent cell. Meiosis is the division of a germ cell into four sex cells (e.g. egg or sperm), each with half the number of chromosomes of the parent cell.
How is economics being used to solve environmental issues?
Explanation:
The environmental sciences have documented large and worrisome changes in earth systems, from climate change and loss of biodiversity, to changes in hydrological and nutrient cycles and depletion of natural resources. These global environmental changes have potentially large negative consequences for future human well-being, and raise questions about whether global civilization is on a sustainable path or is “consuming too much” by depleting vital natural capital (13). The increased scale of economic activity and the consequent increasing impacts on a finite Earth arises from both major demographic changes—including population growth, shifts in age structure, urbanization, and spatial redistributions through migration and rising per capita income and shifts in consumption patterns, such as increases in meat consumption with rising income (19, 20).
An adult insect typically has which of the following traits:
3 major body sections
segmented, jointed legs
wings
chelicerae
Johnston's organ in the antennae
Answer:
3 major body parts
segmented, jointed legs
Johnston's organ in the antennae
The boundary between the false pelvis and the true pelvis is an oblique plane, the circumference of which is called the
An oblique plane is a boundary between the false pelvis and true pelvis, and the circumference is called the pelvis brim.
What is the pelvis?
Basin shape structure supports the spinal column and also protects the abdominal column. pelvic consist sacrum, coccyx, and a pair of hip bones.
The pelvic brim consists sacral segment, iliac, and pubis portion, but ischium is not present in the pelvic brim, the false pelvis and true pelvis boundary is the oblique plan.
The false pelvis is a region of the abdominal cavity but not a region of the pelvic cavity, but the true pelvis contains the bladder, pelvic colon, rectum, and reproductive organ.
Therefore boundary between and true pelvis and false pelvis
an oblique plan having a circumference called a pelvic brim.
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50 POINTS!!!!! Pls Help !
Use the following table to answer the question…
Codons Found in Messenger RNA. Using this information, what sequence of nucleotides in the template strand of DNA could code for the polypeptide sequence Val-His-Thr?
This table shows the codons found in messenger RNA. Using this information, what sequence of nucleotides in the template strand of DNA could code for the polypeptide sequence Val-
His-Thr?
1. GUA CAU ACC
2. GTA-CAT-ACC
3. CAT-GTA TGG
4. CAU-GUA-UG
Answer:
A
Hoped this helped <3
Sprite Zero is 100% sugar-free.
logo,pathos,ethos witch is it?
Answer:
the zero 100 is correct
Explanation:
is correct
Which of the following atmospheric conditions are needed to create the winds?
I. Air masses with equal humidity
II. Air masses with equal temperatures
III. Air masses with different air pressures
- I and II
- I and III
- I only
- III only
Answer:
III only
Explanation:
took the test
The atmospheric condition which is required to create the winds is the air masses with different air pressures. Thus, the correct option for this question is D.
How is wind created?The Wind is created when the radiation of the sun warms or heats one-half of the atmosphere which stimulates the expansion of warmer air whose pressure is low as compared to cooler. The movement of air has occurred from a region of high pressure to a region of low pressure.
During the creation of the wind, humidity and temperatures are not directly involved. But the differences in air pressures are actively involved in the process which is initiated by the radiation of the sun on the atmosphere.
Therefore, air masses with different air pressures is an atmospheric condition that is required to create the winds. Thus, the correct option for this question is D.
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Parasitism is an example of which
of the following?
A. a limiting factor
B. a density-dependent
factor
C. a growth factor
D. a density-independent
factor
Answer:
The answer is B
Explanation:
Parasitism and disease are density-dependent effects, because the denser the host population, the more easily parasites can spread from one host to another.
The use of marijuana while drinking alcohol
Olowers the BAC of the driver causing some impairment of driving ability
does not affect driving ability
may affect driving ability if both substances are taken in abundance
impairs driving beyond that usually related to the BAC of alcohol
What is the purpose of the tool shown in the photograph?
Answer:
B: it magnifies an object so you can study its details!
Explanation:
it's a microscope which helps you observe things up close!:)
during the replication process which enzymes made a Nick in the double-stranded DNA so that each strand separates
DNA primate and helicase
DNA gyrase and topoisomerase
DNA ligase
DNA polymerase
Answer:
D. Polymerase
Explanation:
Is it possible for jellyfish to have autism
Answer: I believe the answer is no, as to see they have no brain.
Explanation: They have a basic set of nerves at the base of their tentacles which can detect touch, temperature, salinity etc. Since they don't have a brain, they depend on automatic reflexes in response to these stimuli! Catching prey is also a matter of chance. Lacking brains, blood, or even hearts, jellyfish are pretty simple critters. They are composed of three layers: an outer layer, called the epidermis; a middle layer made of a thick, elastic, jelly-like substance called mesoglea; and an inner layer, called the gastrodermis.
Which region does the average citezin consume the most resources?
what is photoperiodism ?
A caterpillar is eating a leaf on a tomato plant.
Which two types of organisms are present in this scenario?
Answer:
a parasite and plant (Supposing an organism
HELP ME PLEASE SOMEONE HELP
What are the new cells called that are formed after the cell cycle is complete?
Brother Cells
Sister Cells
Daughter Cells
Parent Cells
Answer:
Daughter cells
Explantion
They are identical to the original cell
What is the stage in the mitosis that is frequently observed?
kinetic and potential energy
ACTIVITY 1 Give at least 5 words related to the word written on each column.
Work
Power
Energy
Answer:yo my bad this just to complete my profile
Explanation:
what gametes are formed if a parent has the genotype AaBb
Explanation:
Half of the gametes get a dominant A and a dominant B allele; the other half of the gametes get a recessive a and a recessive b allele. Both parents produce 25% each of AB, Ab, aB, and ab.
What is the melting point of a substance?
the temperature at which the solid state turns into a liquid state
the temperature at which a gas will completely boil away
the temperature at which a liquid melts
the temperature at which the liquid state boils to a gaseous state
Answer:
the temperature at which the solid state turns into a liquid state
Which statement best describes the importance of carbon in the atmosphere?
- There should be more carbon in the atmosphere than oxygen.
- Additional carbon emissions into the atmosphere will cool our climate.
- A small change in atmospheric carbon can affect climate.
- Carbon is the most abundant element in the atmosphere.
Answer:
The answer is c because A and B are not really giving off an imporant feeling to why carbon is important and D if you read the question carefully it says abundant which means to be a lot of, so C would be your answer
and plus i did the test
Explanation:
Carbon is a component of carbon dioxide, a greenhouse gas that traps heat near to the Earth.It aids in keeping the energy that Earth receives from the Sun from all escaping back into space.The ocean on Earth would be completely frozen if it weren't for carbon dioxide
Why is carbon in the atmosphere important?
All plant life will be directly impacted by the increase in atmospheric carbon dioxide because it will slow down the pace at which radiant energy passes through the ozone layer of the Earth.It provides the amino acids, which are essential for making proteins. There are two main sources of atmospheric carbon dioxide: natural processes and human activity.The majority of animals, which exhale carbon dioxide as a waste product, are natural sources of carbon dioxide. The body's cells can operate normally thanks to oxygen.Plants and animals are necessary for the carbon dioxide and oxygen cycle on Earth.Animals and other living creatures require oxygen to thrive, which is provided by plants.The carbon dioxide that plants use to produce their own sustenance is provided by animals and other living things. Plants use carbon dioxide and sunlight during photosynthesis to produce the fuel—glucose and other sugars—needed to develop their own structures.The quick (biological) carbon cycle is built on this process. Extra carbon in the atmosphere warms the earth and promotes the growth of terrestrial plants.A surplus of carbon in the ocean causes the water to become more acidic, endangering marine life. Only roughly half of the CO2 produced by human emissions is still present in the atmosphere.The remaining amount is divided almost equally between ocean uptake and uptake into the land ecosystem. When coal, gas, and oil are burned to make electricity or to power our automobiles, too much carbon is released into the atmosphere, which contributes significantly to global warming.As if a blanket were being spread out over the planet, these gases trap solar heat that would otherwise radiate into space. The capacity of carbon to create securely linked chains that are enclosed by hydrogen atoms makes it unique among the elements.The majority of these hydrocarbons are utilized as fuels and are obtained naturally as fossil fuels (coal, oil, and natural gasThe carbon cycle is the movement of carbon between living things including plants, animals, and bacteria as well as between the earth's minerals and the atmosphere.The fourth most prevalent element in the universe is carbon.Carbon is essential to life on Earth because it can be used to create intricate compounds like DNA and proteins. People are accelerating the natural greenhouse effect and raising the earth's temperature by releasing more carbon dioxide into the atmosphere.To learn more about carbon refer
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One process results in a transfer of genetic material. What is the name of the process, and at which step does the transfer occur?
Answer:
process of bacterial conjugation.
Explanation:
can someone please help me??
Answer:
number of molecules
basically molecular space
the loosely the molecules are packed the lighter the object is eg gas.
solids have tightly packed molecular spaces
liquids have medium spaces between molecules
In a species of lizard you can see two main phenotypes, brown and green, recently
there have been sightings of a brown lizard with green spots running around! If this
truly is the case what can you infer from this data?
A. the lizards are exhibiting codominance
B. the lizards are exhibiting multiple alleles
C. the lizards are exhibiting incomplete dominance
D. the lizards are normal
Answer: the lizards are exhibiting codominance
Explanation: I just took the test and it was correct.
In the lizards that are brown with green spots, co-dominance is being exhibited.
Genes often occur in pairs called alleles. One gene is usually expressed anytime it is present and it is called the dominant gene. The other is not expressed in the presence of the dominant gene and it is called the recessive gene.
However, when two genes are expressed together such as in the case of the brown lizard with green spots, this is a case of co-dominance.
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Hãy xác định biện pháp tu từ được sử dụng trong các đoạn thơ, đoạn văn dưới đây và phân tích giá trị của chúng.
a. Hàng trăm thứ cá sinh sôi nảy nở ở đây. Cá đi từng đàn, khi thì tung tăng bơi lội, khi thì lao vun vút như con thoi. Cá nhảy lên thuyền, lướt trên mặt sóng. Cá tràn lên bờ lúc mưa to, gió lớn.
b. Bóng tối trùm nặng từng quãng, nhanh và dữ tợn. Các mõm núi đang vàng rực, bỗng xanh rợn. Gió đã chồm lên rồi chết đứng từng đợt ngay giữa các triền đồi tranh im lặng!
Answer:
Gak bisa bahasa inggeris
Explanation:
Ya gak tau kok tanya saya
what is wave propagation?
Answer:
Wave propagation is any of the ways in which waves travel
