what does a stigma in a flower do?
Answer:
Part of the pistil where the pollen germinates
Explanation:
Stigma is the platform on which pollen grains land. Pollen drops on the stigma from where fertilization occurs. Stigma's main work is to basically receive the pollen, thus it has sticky surface.
In peas, the trait of plant height is determined by a dominant tall allele and a recessive dwarf allele. A true-breeding tall plant is crossed to a true-breeding dwarf plant. What do you expect to see in the offspring of this mating?
Answer:
Here is the answer...hope it helps:)
I’m general how many human activities influence the carbon cycle
Explanation:
Factories, cars, oil producers, woodcutting, building houses, and even building new roads makes the carbon cycle harder to go through.
An obstruction in the glomerulus would affect the flow of blood into the:
how often can a catalase molecule be used to hydrolyze hydrogen peroxide?
Answer:
One molecule of catalase can break 40 million molecules of hydrogen peroxide each second
Explanation:
what are the major schools of thought on personality
HELP PLEASEEE!!!
Answer:
Structuralism and Functionalism
Explanation:
Structuralism is widely regarded as the first school of thought in psychology. This outlook focused on breaking down mental processes into the most basic components. Major thinkers associated with structuralism include Wilhelm Wundt and Edward Titchener.
the main form of glucose repression in the lac operon is
Answer:
Extracellular glucose affects the lactose operon activation by inhibiting
Rivers and streams are biodiverse ecosystems that are sensitive to change. please select the best answer from the choices provided t f
It is true that rivers and streams are biodiverse ecosystems that are sensitive to change. Details about rivers and streams can be found below.
What is river and stream?A river is a large and often winding stream which drains a land mass, carrying water down from higher areas to a lower point, oftentimes ending in another body of water, such as an ocean or in an inland sea.
On the other hand, a stream is a small river or a body of moving water confined by banks.
Rivers and streams are both freshwater ecosystems, hence, tend to respond to changes in their environment caused by anthropogenic activities.
Therefore, it is true that rivers and streams are biodiverse ecosystems that are sensitive to change.
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Answer:
True
Explanation:
Describe how energy for the photosynthesis reaction is gained by plants.
Answer:
6CO2 + 6H2O → C6H12O6 + 6O2
Under the conditions that in the presence of sunlight and chlorophyll, carbon dioxide reacts with water molecules to produce glucose and oxygen
What features generally characterize cancer cells? Select all that apply.
A. rapid cell division
B. large or irregularly shaped nucleus
C. lack of cell organelles
D. long tubular shape
Ovulation involves the release of the _____________ from a mature follicle.
Answer:
ovulation involves the release of the secondary oocyte from a mature follicle
Astronomy
With all the interaction, competitiveness, and collaboration among countries around the globe with space travel, what role do you think politics plays (or has played) in these relationships regarding space travel? Explain and discuss.
Politics plays an active role in relation to space travel, as an example we can mention the space race during the Cold War.
What was the space race?It was the dispute for hegemony in space exploration between the United States and the Soviet Union in the period from 1957 to 1975 during the Cold War, which was a geopolitical conflict. This period was marked by major technological developments.
Therefore, the policy is an instrument capable of influencing space travel in order to generate collaboration and competitiveness between countries, being a positive instrument for further development in space exploration.
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Answer: Politics plays an active role in relation to space travel, as an example we can mention the space race during the Cold War. The space race was the dispute for hegemony in space exploration between the United States and the Soviet Union in the period from 1957 to 1975 during the Cold War, which was a geopolitical conflict. This period was marked by major technological developments.
Explanation:
What does a transformed e. Coli cell contain that a normal e. Coli cell does not?.
A transformed e. Coli cell contain plasmid with an ampicillin resistant gene while a normal e. Coli cell does not.
What is a Transformed bacteria?This is the type of bacteria which has been modified through the introduction of a foreign DNA.
The DNA is introduced to the e.coli which then makes it to be ampicillin resistant for research works.
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2. what is the trend between 20-30 years in the kelp population? explain.
The trend between 20-30 years in the kelp population is that it is reducing due to sea urchins eating kelp and clipping the bottoms, hence, stopping kelp from regrowing.
What is the trend in the Kelp population?Kelp is a form of giant seaweed found in ocean floors.
Kelp serve as food for certain sea animals such as sea urchins.
However, due to increasing number of sea urchins and increase in environmental pressures, the Kelp population reduced in the last 20 to 30 years.
Therefore, the trend between 20-30 years in the kelp population is that it is going down due to sea urchins eating kelp and clipping the bottoms, hence, stopping kelp from regrowing.
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When are conservation efforts most effective?
a.
Conservation efforts are most effective when multiple groups cooperate.
b.
Conservation efforts are most effective when government is solely responsible for them.
c.
Conservation efforts are most effective with individual efforts.
d.
Conservation efforts are always effective.
Please select the best answer from the choices provided
A
B
C
D
Answer:
A 100%
Explanation:
just took the test on edge
In Cellular Respiration, Glucose is transformed into?
*
Which are ethical concerns related to editing the genes of germline cells?
Select all that apply.
The risk of unknown side effects if we allow it.
The cost of human suffering if we don’t allow it.
The effects on future generations if we allow it.
The risk that genes will not end up in future generations if we allow it.
The ethical concerns related to editing the genes of germline cells include the risk of unknown side effects and effects on future generations.
What is gene editing?Gene editing refers to the genetic engineering technologies aimed at modifying the content of genes.
Germinal gene editing assumes the edition of the germinal line and therefore it affects the gene content of future generations.
In conclusion, the ethical concerns related to editing the genes of germline cells include the risk of unknown side effects and effects on future generations.
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Hybrid offspring such as mules and zonkeys that are produced when two different, but similar species mate are not considered a true species because the hybrids are infertile. What type of reproductive isolation does this illustrate?
a. behavioral prezygotic reproductive isolation
b. gametic prezygotic reproductive isolation
c. postzygotic reproductive isolation
Answer:
I'd sat b
Explanation:
is this a question or a test or something
What is considered to be the lowest level of organization in a multicellular organism?.
Answer:
Lower levels of organization in multicellular organisms are cells tissues and organs.
Which example is indirect evidence used to study Earth’s interior?
composition of minerals in a rock
age of a rock from within Earth
location of an earthquake’s epicenter
texture of different core samples
Answer:
location of an earthquake’s epicenter
An indirect evidence is one which is used to infer or support the clause. The location of an earthquake’s epicenter can be used to study Earth’s interior.
Three main layers make up the Earth. The crust, mantle, and core are those. Additionally, since the earth's interior cannot be directly studied, the composition of rocks can be understood from direct evidence.
Seismic waves aid in comprehending circumstantial evidence. The energy that passes through the various layers of the earth is carried by seismic waves. Landslides, earthquakes, and volcanoes are some of the causes. The direction of the seismic wave, as well as the location of the earth's epicenter, can be determined by analyzing several seismographs.
Therefore, studying the location of an earthquake’s epicenter would give an idea of Earth’s interior. The correct answer is option C.
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Missense mutations, nonsense mutations, and neutral mutations are all what type of mutation?
A.)single point mutations B.)chromosomal mutations
Which of the following is not a possible cause for air pollution?
a. volcanoes
b. industry
c. combustion
d. none of the above
In 2001, the Human Genome Project reported that humans have about 30,000 genes. By 2018, researchers had revised that number to
In 2001, the Human Genome Project reported that humans have about 30,000 genes. By 2018, researchers had revised that number to 20,700. This is further explained below.
What is Genome?Generally, Genome can be defined as a gamete or microorganism's haploid pair of chromosomes or each cell of a multicellular organism
In conclusion, researchers had revised that number to around 20,000 to 25,000 in later years
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Which of the following lists organisms from oldest to youngest organisms on Earth?
a. bacteria, mammals, reptiles, fish
b. fish, bacteria, mammals, reptiles
c. bacteria, fish, reptiles, mammals
d. reptiles, mammals, fish, bacteria
Answer:
c
c is the correct anwser because if you date back to the young earth ot was nothing but water and bacteria was the first thing on earth and then came fish and then the land for reptiles
6.04 energy conservation design worksheet
In this section, describe at least six green building approaches from the
lesson (or your research) that you would like to use in your model green
home.
Description of Green Source Approximate Energy
Price of Using the
Building Approach
Savings
Approach
Approach 1
Approach 2
Approach 3
Approach 4
Approach 5
Approach 6
Total Price
Energy Efficiency:
In this section, describe at least six energy-efficient appliances and
technologies from the lesson (or your research) that you would like to use
in your model green home.
Description of
Source Approximate Energy
Appliance/Technology
Savings
Price of Using the
Appliance/Technology
Telli
Item 2
Item 3
Item 4
fem )
Item 6
Total Price
The six green building approaches to use are:
Heating and Cooling system.Water collection systems.What are Green energy sources?
Others are;
Use of natural and recycled materials. Water Treatment and Waste Management.Promoting local food production.Integrated building processes.Green energy sources are known to be a kind of naturally sustained, energy source.
Energy-efficient appliances are:
Washing machinesDryersRefrigeratorsDishwashersDehumidifiers.Note that Green sources is one that des not used mining or drilling operations as it can cause great harm to our eco-systems.
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Which of these is not a direct function of mitosis in humans?
O development from embryo to adult
O reproduction to produce the next generation
O repair of damaged tissue
O growth
Answer:
O reproduction to produce the next generation
Explanation:
Meiosis is responsible to reproduction (not mitosis). The rest of options are for mitosis.
The one that is not a direct function of mitosis is reproduction to produce the next generation. The correct option is B.
What is mitosis?Mitosis is a type of cell division in which one cell (the mother) divides to produce two new genetically identical cells (the daughters).
Mitosis is the process by which the DNA of the cell's nucleus is divided into two equal sets of chromosomes in the context of the cell cycle.
Meiosis is the process by which egg and sperm cells are formed. Mitosis is a necessary process for life.
Meiosis is a type of cell division that produces four gamete cells while reducing the number of chromosomes in the parent cell by half.
This process is necessary for the production of egg and sperm cells for reproduction.
Thus, the correct option is B.
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help please!!!
BIOLOGY
Cell theory will not ever become the law of cells because cells undergo changes as mutations occur within them, and developing anything beyond cell theory would be impractical.
What do you mean by Cell theory?Cell theory may be defined as a theory given by M.J. Schleiden and T Schwann which states that all living organisms are made up of cells which are the smallest unit of all living entities.
It is only due to mutations, cell changes its identity and properties randomly. Hence, it seems very tough for scientists to analyze all the mutations in the cell.
Therefore, cell theory will not ever become the law of cells because cells undergo changes as mutations occur within them, and developing anything beyond cell theory would be impractical.
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How would mutation in the plakophilin gene lead to hyperhidrosis.
Mutation in the plakophilin gene can lead to hyperhidrosis because a change in the sequence of the plakophilin gene will hinder the production of a protein.
What is hyperhidrosis?Hyperhidrosis is a medical condition with the primary symptom of excessive sweating, in excess of that required for regulation of body temperature.
Mutation is any change or alteration in the genetic sequence of the genome.
Therefore, mutation in the plakophilin gene can lead to hyperhidrosis because a change in the sequence of the plakophilin gene will hinder the production of a protein.
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Which event is directly mediated by a ligand-gated ion channel?.
Answer:
Influx of Na+ across the motor end plate resulting in the depolarization of the muscle fiber membrane
**because the influx of Na+ across the motor end plate occurs when Na+ ion channels bind the ligand acetylcholine.
How can fish farming still deplete ecosystems?
A. Farmed fish often eat wild-caught fish.
B. Fish farming always occurs in the wild.
C. Farmed fish always live in self-contained units.
D.Farmed fish can be fed sustainably grown grains.
Answer:
B.
Explanation:
How does fish farming harm the local ecosystem?
Fish-farming is thought to contribute to eutrophication and the worldwide growth of this industry is of concern. Faeces and uneaten food pellets from fish farms alter the organic matter in the sediment, which can change the consumption of oxygen and cause local eutrophication.
