Answer:
The US Department of Agriculture worked with the US Army to get samples of the penicillin mold
Answer:
akjdcbflaksjdfkshvishzcvkbsidvhishvozshvzshcxv next time answer properly
Explanation:
What are the 8 main environmental pressures?
Answer:
Climate change, shortage of natural resources, waste in the environment, decreasing biological diversity, toxic chemicals, water pollution, shortage of water resources and air pollution.
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Identify the interaction described below Two male deer will fight each other for the opportunity to mate with a female.
An owl catches a mouse and eats it for dinner.
Answer: competition
Explanation: when its a fight its a competition
Answer:
1.=competition
2.=predation
Explanation:
define the ratio of sperm to egg?
Answer:
1,2 × 10⁹ : 1
Explanation:
In fact, the average male will produce roughly 525 billion sperm cells over a lifetime and shed at least one billion of them per month. A healthy adult male can release between 40 million and 1.2 billion sperm cells in a single ejaculation.
Explanation:
Therefore, a standard sperm to egg ratio of 1 × 105 sperm per egg is recommended for fertilization in Atlantic cod. At the 1 × 103:1, 5 × 103:1, and 1 × 104:1 sperm to egg ratios maximum fertilization occurred after 30 min sperm to egg contact time.
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in the term 2pq of the Hardy-Weinberg equation. Why is the multiplication by two necessary?
PLEASE HELP ME!!!!!
A-The term is multiplied by two because the effect of both the alleles is taken into account.
B-There are two ways that a heterozygous individual can arise: either by receiving a recessive allele from the egg and a dominant allele from the sperm, or by receiving a dominant allele from the egg and a recessive allele from the sperm
C-The frequency of the dominant allele is doubled because of its stronger effect on the phenotype.
D-The term is multiplied by tvo to account for doubling of the population in each generation.
Answer:
The correct answer is : option B.
Explanation:
Hardy–Weinberg equilibrium is a mathematical model that states that genotype percentage or frequency in a population and allele in a population remains stable or constant to generations if there are no evolutionary influences present.
Hardy Weinberg equation is :
P²+2pq+q² = 1
Here, p² represents the frequency of genotypes dominant homozygotes (AA) in a population in equilibrium. The term 2pq represents the frequency of heterozygotes (Aa) as there are two ways of developing heterozygous individuals either dominant from the egg and recessive from sperm or vice versa. and the term q² represents the frequency of recessive homozygotes (aa).
Thus, the correct answer is : option B.
There are two ways that a heterozygous individual can arise: either by receiving a recessive allele from the egg and a dominant allele from the sperm, or by receiving a dominant allele from the egg and a recessive allele from the sperm, the frequency of the heterozygous allele is multiplied by 2 (option B).
The Hardy–Weinberg equation is an equation which expresses the principle of Hardy-Weinberg equilibrium. The Hardy-Weinberg equilibrium states that in the absence of external evolutionary factors which disturbs equilibrium, the amount of genetic variation in a population will remain constant from one generation to the next.
The Hardy Weinberg equation is given as: p² + 2pq + q² = 1
In the equation above,
p² represents the frequency of dominant h0m0zygotes (AA)q²represents the frequency of recessive h0m0zygotes (aa),2pq represents the frequency of heterozygotes (Aa),p represents the allele frequency of the allele A and q represents the allele frequency of the allele a.The sum of all the three frequencies equal to 1 representing all the possible allele combinations.Since there are two ways that a heterozygous individual can arise: either by receiving a recessive allele from the egg and a dominant allele from the sperm, or by receiving a dominant allele from the egg and a recessive allele from the sperm, the frequency of the heterozygous allele is multiplied by 2.
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One function of the poly-A tail on eukaryotic MRNA sequences is to help the MRNA be transported from the nucleus to the cytoplasm. Prokaryotic mRNA also has a poly-A tail. Choose the best explanation of the prokaryotic poly-A tail.
Answer:
In eukaryotes, it is well known that polyadenylation is required to produce the mature messenger RNA (mRNA) molecule and it provides stability to the mRNA during translation initiation. In prokaryotic organisms, polyadenylation is required for the degradation of the mRNA in a mechanism that involves three steps: endonucleolytic cleavage, polyadenylation and exonucleolytic degradation. Moreover, it is also important to note that no evidence of polyadenylation has bee reported in some prokaryotes including the halophilic bacteria Haloferax volcanic (Slomovic et al. 2005).
Citation:
Slomovic, S., Laufer, D., Geiger, D., & Schuster, G. (2005). Polyadenylation and degradation of human mitochondrial RNA: the prokaryotic past leaves its mark. Molecular and cellular biology, 25(15), 6427-6435.
Which of these is one way that seismologists compare earthquakes?
A. By counting the number of tsunamis
B. By measuring their pyroclastic flow
C.By assigning them a magnitude between 1 and 10
D. By measuring their elastic rebound
PLEASE HELP ME!!
Answer:
by counting the number of tsunami
Explanation:
what i think is that the tsunami earth quakes are particularly destractive and dangerous because the massive tsunami waves and there way was to determine that an event is a tsunami earth quakes in time to warn people that there was an expectedly large waves.
Seismologists are professionals in geology that compare earthquakes by measuring their elastic rebound (option D).
What is an elastic rebound?The elastic-rebound can be defined as the amount of energy (or energy transfer) that can be generated by earthquakes.
Seismologists are professionals in geology that compare earthquakes by using this type of measurement.In conclusion, seismologists are professionals in geology that compare earthquakes by measuring their elastic rebound (option D).
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Which list shows the levels of organization of an organism in hierarchical order from left to right, from the least complex to the most complex?
what is the name of the protective structure that forms around an embryo
Answer:
a baby or Amnion
Explanation:
Which is the largest organ of the human body?
Answer:
The skin.
Explanation:
The skin is the largest organ in the human body.
Answer:
skin is the biggest
Explanation:
why is nectar important for insects?
Answer:
Nectar is important for insects because.. Nectar is an ecologically important item, the sugar source for honey. It is also useful in agriculture and horticulture because the adult stages of some predatory insects feed on nectar. For example, the social wasp species Apoica flavissima relies on nectar as a primary food source. In turn, these wasps then hunt agricultural pest insects as food for their young.
Which of the following statements about CO2is not true?
CO2is is just one type of greenhouse.
CO2is is harmful to the planet.
Life as we know it could not exist without CO2
The CO2in in our atmosphere has been around a long time.
Answer:
Co2 is harmful to the planet
Life as we know doesn't exist without co2
Explanation:
Plants use co2 so it is useful. Pants are the energy source for all other life
Do all organisms fight for survival
Answer:
Yes
Explanation:
To survive, all organisms must compete for resources.
4
Which is a function of protein macromolecules?
O A. Storing energy in bonds
O B. Making codes for organisms
O C. Making muscle tissue
O D. Insulating organs in the body
7. Which of the following is an anaerobic activity?
a.Glycolysis
b.Photosynthesis
c.Kreb's Cycle
d. All of the above
Answer:
a. glycolysis
Explanation:
I'm really unsure about this but in glycolysis if there is no oxygen, there is a process called fermentation. Fermentation is an anaerobic process and is used when our body lacks in oxygen
Which of these is a function of estrogen in reproduction?
O A. Producing the endocrine system and hormones
B. Producing and maturing sperm
O c. Promoting the development of the adult female body
O D. Promoting the development of adrenal glands
SUBMIT
Answer:
Promoting the development of the adult female body
Explanation:
the explanation for this is weird... The primary function of estrogens is development of female secondary sexual characteristics...etc of parts of the female's body..
if u want more explanation lmk hope this helped
Select the correct answer from the drop-down menu.
When multiple glaciers start their downward flow from a single point, they create a .
Answer:
They create a Mountain Peak
When multiple glaciers start their downward flow from a single point, they create a Mountain peak. So, the correct option is B.
What are Glaciers?A glacier is a sizable, slowly moving mass of ice that develops over a considerable amount of time as a result of the buildup of snow and ice. In areas where the average temperature is below freezing and there is enough snowfall to offset the melting that takes place during the summer, glaciers can be discovered. They can occur at lower elevations in some places, although they are mainly found at high altitudes or in the polar regions.
When several glaciers begin to flow downward, they build something resembling a pyramid. The mountain peak is created as a result of the glacier's movement from a single location. Due to the simultaneous movement of several glaciers to the ground, a pointed structure has recently created.
Therefore, the correct option is B.
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Your question is incomplete, most probably the complete question is:
when multiple glaciers start their downward flow from a single point, they create a [mountain cliff] or [mountain peak]
When seedless plants die, the decaying plants are compressed into a substance called:
A. fuel
B. peat
C. energy
Answer:
C.peat
Explanation:
When seedles plants die, the waterlogged soil slows the decay process. Over time, these decaying plants are compressed into a substance called peat
Answer:
the answer is part A
Explanation:
carbon dioxide + water =
The nucleus in both plant and animal cells “specializes” the cells so they can do different things- for example, a liver cell or a muscle cell do different things. Thinking about plants or trees, what special functions might different cells in a tree or plant do?
Answer:
od21xef3
Explanation:ewwe
Which type of selection leads to increased phenotypic and genetic variation? directional selection disruptive selection stabilizing selection species selection
Answer:
diruptive selection/ diversifying selection
Explanation:
disruptive selection often leads to more variations in species
The circumstance that concludes whether the organism will be able to accommodate and endure in the changed conditions is called selection.
The correct answer is:
Option B. Disruptive selection.
This can be explained by:
Disruptive or diversifying adaptation occurs when there is a change in population genetics in which the traits are valued over intermediates.This type of assortment supports either the dominant or the recessive trait but do not favour intermediates.For example, in selection between tall, short or intermediate organisms the tall and short will be selected over the medium heightened organism.Therefore, disruptive selection will lead to increased phenotypic and genetic variation.
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Question 3 of 10
2 Points
When can exponential growth happen?
O A. When there is unlimited food and space
B. When the death rate is high
C. When carrying capacity is reached
D. When there is competition for resources
Answer: when there is Unlimited food and space
Explanation:
When there is unlimited food and space. Exponential growth occurs when a population has unlimited resources, such as food and space, and there are no limiting factors such as predation, disease, or competition for resources. In such a scenario, the population will continue to grow at an accelerating rate without reaching a carrying capacity. Hence option A is correct.
What is exponential growth?
Exponential growth can occur when there are no limiting factors that affect the population size. This means that the population has access to unlimited resources such as food, water, and space. In this scenario, the birth rate exceeds the death rate, and the population grows at an increasing rate over time.
As the population grows larger, the rate of growth also increases, resulting in a J-shaped curve on a graph.
However, in the real world, exponential growth is limited by factors such as predation, disease, competition for resources, and environmental factors like weather and natural disasters.
When these limiting factors are present, the growth rate of the population slows down, and the population may eventually reach a maximum size that the environment can support, known as the carrying capacity.
At this point, the population growth rate slows down to zero, and the population size stabilizes at or around the carrying capacity.
Hence option A is correct.
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Are all genes that are passed on advantageous? Why or Why not?
Answer:
no because certain genes could be bad and negatively affect the thing with those genes
hi how old am i What is the dominant religion in North and South America? A. Islam B. Judaism C. Hinduism D. Christianity Please select the best answer from the choices provided
Answer:
D. Christianity
Explanation:
Which choice describes a community?
a forest of birds, insects, and squirrels
a desert of sand, rocks, hawks, and snakes
a hole in which a snake lives
the desert
Answer:a forest of birds, insects, and squirrels
Explanation: A community consists of only biotic (living) factors with multiple different populations (different groups of animals)
Use the image to answer the questions.
B
с
is a producer
is a consumer.
Hospital patients often receive medications, nutrients, and water intravenously (IV), which means they are injected directly into the patient’s veins through a needle. IV fluid is not pure water, but is instead a saline solution (water containing NaCl). What do you think is the appropriate NaCl concentration for IV fluid? Why?
Answer:
The answer to the following question is given below.
Explanation:
Saline includes 9 g NaCl dissolved in 1 liter of distilled water utilized primarily for sick people with moisturization.
This NaCl concentration has been presumed to be the physiologic concentration necessary for the restoration of vitamins and minerals by the body to control a suitable osmotic balance.
NaCl is mainly used to cover up the salt missing. In order to help nerves function properly, our bodies do require sodium.
The explanation regarding appropriate NaCl concentration for IV fluid is explained below:
The following information should be considered:
Saline involved 9 g NaCl that dissolved in 1 liter of distilled water utilized primarily for sick people with moisturization. This NaCl concentration has been assumed to be the physiologic concentration significant for the restoration of vitamins and minerals via the body to control a suitable osmotic balance. NaCl is mainly used to cover up the salt missing.Learn more: https://brainly.com/question/20492533?referrer=searchResults
This is the range of habitats in a region
Answer: species range
Explanation:
A species range is an area where a particular species can be found during its lifetime. Species ranges include areas where individuals or communities may migrate or hibernate.
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Pre-Test
Active
TIME REMAININ
1
2
46:50
Chan Hee is inflating a basketball using an air pump. He notices that the pump gets warm as he uses it. What is a good
hypothesis that could lead to new experimentation?
If there is no air in a basketball, then it is hard to play the game.
A basketball that is inflated bounces better than one that is not inflated.
If air in a pump is squeezed more, then the air gets hotter because energy is added to it.
Basketball is more fun to play than baseball because you have to move a lot more.
Answer:
If air in a pump is squeezed more, then the air gets hotter because energy is added to it.
Explanation:
A good hypothesis in the given case is that inflating basketball is getting warmer, the more it is pumped, and as a result, it would possess more heat or more friction due to all the air being pumped into the basketball at a single time.
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what is deplasmolysis
Answer:
Deplasmolysis swelling of the cytoplasm of a plasmolyzed cell : reversal of plasmolysis.
Explanation:
This chemical equation represents the burning of methane, but the equation is incomplete. What is the missing coefficient in both the reactants and the products?
CH4 + ____O2 → CO2 + ____H2O
A.
0
B.
1
C.
2
D.
3
E.
4
Answer:
C) 2
Explanation:
quick maths i guess
Answer:
C.) 2
Explanation: