Estrogens are hormones that are play important roles in the reproductive system.
What are the roles played by estrogen?The environmental estrogen introduced to the male cells has the ability to recognise the binding sites of the receptors on the male cells.
They are able to attach the the cell membranes by its ability to bind to the cell receptors.
When the binding occurs, there would be a conformational change within the cell leading to:
modulation of protein synthesis anddevelopment of the female secondary reproductive characteristics.Learn more about cell membrane here:
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An earthworm's body plan
consists of all, EXCEPT which
of the following?
A. a simple brain with a nerve cord
B. pores in the skin for food to move in and a stomach in each
segment
C. longitudinal and circular muscles for movement
D. a heart of aortic arches and vessels along the body
An earthworm's body plan consists of all, EXCEPT pores in the skin for food to move in and a stomach in each segment. Thus, option "B" is correct.
What is an earthworm's body plan?The physique of the earthworm is segmented which appears like numerous tiny rings combined or merged collectively. The earthworm is made of around 100-150 segments. The segmented body portions deliver significant organizational purposes.
Segmentation can help the earthworm move. Each segment or piece has muscles and bristles named setae. The bristles or setae support the anchor and govern the worm when stirring over the soil. The bristles grasp a segment of the worm definitely into the ground while the other portion of the physique projects forward.
The earthworm uses parts to either contract or relaxes self-sufficiently to source the body to grow in one area or contract in other areas. The division supports the worm to be supple and sturdy in its drive. If each section stimulated collectively deprived of being self-governing, the earthworm would be stationary.
Thus, option "B" is correct.
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Which of the following is a true statement?
A. Light energy causes water molecules to split up.
B. Light energy bonds the carbon and oxygen together to make carbon dioxide.
C. Light energy creates water molecules.
D. None of the above
Answer:
A is the answer make me Brainlist
marking brainlist!!!!
If an organism were to die in an environment that had no saprotrophs or detritivores, what would you expect to see if you observed the area 2 weeks later?
A. There would be nothing left, it will have completely decomposed.
B. The body would remain, and be just as it was when it died except for weathering.
C. There will be no difference as compared to an area that has saprotrophs and detritivores.
D. The body would be decomposing at about half the normal speed.
The body would remain, and be just as it was when it died except for weathering expect to see if you observed the area 2 weeks later. Thus, the correct option is B.
What is detritivores?Detritivores is defined as an organism that feeds on dead and deteriorating organic stuff (such as an earthworm or a fungus).
Decomposers that live on or in dead organic matter secrete enzymes and release nutrients into the ecosystem are known as saprotrophs. Fungi are an example.
The deceased organisms will remain the same without detrivores and saprotrophs, with the exception of weathering, which is taken out by air, water, or other agents.
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Which of the following best explains how the root hair contributes to the function of the root epidermal cell? Choose 1 answer: Choose 1 answer:(Choice A)
A
It causes the cell to move in response to stress.
(Choice B)
B
It gives the cell enough space for a nucleus.
(Choice C)
C
It allows the cell to absorb more water.
Answer:
C - It allows the cell to absorb more water.
Explanation:
Specialized cells often have unique structures that allow them to carry out a function. For example, a root hair increases the surface area of a root epidermal cell, allowing the cell to absorb more water.
Answer:
C - it allows the cell to absorb more water
In the total time of the United States space program, how many space flight tragedies have occurred? 1 2 None 5
About 20 astronaut have faced fatalities during the space program.
Answer:
2
Explanatioin:
DO reasearch about all the space launches
The extracellular material of a tissue is called the:.
Answer:
The extracellular material of a tissue is called the Matrix
What is a colony forming unit and how is it used to infer microbial numbers in a sample?.
Answer:
What is a colony-forming unit and how is it used to infer microbial numbers in a sample? A colony-forming unit is the measurable number of colonies that are formed on the agar plate solution. In this experiment, each colony formed of S. cerevisiae will be a colony-forming
in this phase of mitosis the cells DNA is replicated so that both daughter cells will have
Answer:
the same.
Explanation:
It is because mitosis is a cell of DNA and if the both daughter mitosis's DNA will have the same.
Which statements describe how traits are inherited
Answer: Traits are inherited when the genes from parents are passed off to their offspring.
Explanation:
How does the body obtain more glucose, if it is needed for cell respiration?
Through the process of cellular respiration, the energy in food is changed into energy that can be used by the body's cells. Initially, the sugars in the food you eat are digested into the simple sugar glucose, a . The varying glucose concentration affects the rate of cellular respiration as all living cells require both glucose and oxygen for their proper functioning. If the cell has a low level of glucose, then it cannot produce the energy -ATP molecules.
monosaccharide means any of the class of sugars (e.g., glucose) that cannot be hydrolyzed to give a simpler sugar.
What did the Miller-Urey experiment provide evidence for?
*
a. primordial soup theory
b. endosymbiosis
c. spontaneous generation
d. biogenesis
Answer:
i believe it is endosymbiosis
Select the correct answer from each drop-down menu.
A mouse had a gene sequence of GTT coding for leucine, an amino acid.
mutation in this gene led to the formation of GTG. However, the amino acid formed was leucine, despite the mutation. This is a
mutation for the mouse.
The mutation that occurred in the mouse is a silent mutation since it does not affect the amino acid sequence in the protein.
What is a mutation?A mutation is a change that occurs in the sequence of nucleotides in the DNA of organisms.
A mutation can either have deleterious effect on the organism or have no effect at all. Mutations that do not have any effect on the organism are known as silent mutations.
Silent mutations do not affect the sequence of amino acids that make up a protein.
Therefore, the mutation that occurred in the mouse is a silent mutation since it does not affect the amino acid sequence in the protein.
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Coal is a fossil fuel that is used to produce electricity. Which of these statements best describes a cost of coal mining on the region around the mines? (4 points)
It gets less electricity.
It becomes depleted of essential minerals.
Its groundwater is contaminated.
Its rivers and streams become dry.
The statement that best describes a cost of coal mining on the region around the mines is that Its groundwater is contaminated.
What is coal mining?A coal mine is a mine from which coal ore or coal minerals are mined.
Mining is activity of removing solid valuables from the earth or the activity that extracts or undermines.
Mining is a process that releases pollutants into the environment, therefore, the statement that best describes a cost of coal mining on the region around the mines is that Its groundwater is contaminated.
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Identify the fungus type pictured below.
The image shows cup shaped fungi.
Public Domain
Club fungi
Sac fungi
Imperfect fungi
Zygote fungi
Cup-shaped fungi are a type of sac fungi.
Cup fungi or Pezizacea are a unique-shaped fungiThese mushrooms grow and form the shape of a cup, giving them their nameThe function of this cup shape is to allow water drops to fall on the gills of the fungus and help disperse the fungal sporesIn short, the cup shape helps to promote spore dispersalCup fungi belong to the group AscomycotaAscomycota are also called sac fungiAscomycota is the largest phylum in the fungi kingdomA few cup fungi function as pathogensHence, Sac fungi include the group of cup-shaped fungi
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Answer:
Sac Fungi
Explanation:
Rabbits were introduced to Australia by humans and have caused severe disruptions to the natural ecosystem. How would you classify these rabbits?
The rabbits would be classified as exotic invasive species.
What are invasive species?Invasive species are plant or animal species that disrupt the ecological balance of ecosystems by their invasive attributes.
Invasive attributes include the ability to spread or multiply at a fast rate, sometimes secreting biological chemicals to inhibit the growth of other species.
Exotic invasive species are invasive species that are introduced, rather than being native to the ecosystem.
Thus, the rabbits can be classified as exotic invasive species.
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Match each item with the correct description.
1. pumps blood to the lungs
left ventricle
2. pumps blood to the body
arteries
3. receives blood from the body
left atrium
4. receives blood from the lungs
right ventricle
5. carry blood toward the heart
right atrium
6. carry blood away from the heart
veins
I can't remember what it is :P
PLEASE HELP ASAP. WILL GIVE BAINLIEST! How does technology influence how the types of energy sources are used? Give an example to support your answer.
Answer:
It has provided for the use of alternate energy sources that have reduced impact on the environment. For example, if we are on our electronics that uses electrical energy which means that that energy is used in the electronic. So that means the energy that is always used which is electrical energy is an example of my answer
Which structure is present in bacteria but not in a virus? O nucleic acid O capsid O cell membrane O envelope
Answer:c(cell membrane
Explanation:Quizlet said so
When a person sees a doctor about a respiratory illness, the doctor will want to determine if the sickness is in the upper respiratory tract or the lower respiratory tract. The starting point for the lower respiratory system is the trachea.
Which structures are part of the upper respiratory system? Select three options.
the larynx
the bronchus
the alveoli
the lungs
the pharynx
The structures which are part of the upper respiratory system include the following:
The pharynxThe larynxThe bronchus.What is Respiratory system?This is the system which is involved in the gaseous exchange of organisms and consists of organs such as lungs etc.
The parts mentioned above are found in the upper respiratory tract of most animals.
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Which of these most likely explains why the bacterial population stopped growing?
Bacterial population needs an optimum environment to survive. The bacterial population stopped growing because bacteria competed for the nutrients and when the nutrients were consumed, they died.
What are the optimum conditions required for bacterial growth?Bacteria require optimum conditions and full of nutrients to survive. It can include the following:
Oxygen.pH.Temperature.Light.Nutrients.Osmotic pressure.Atmospheric pressure.Moisture, etc.Thus, the bacterial population stopped growing as they did not get optimum condition as the nutrients got consumed.
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Anyone know how to do this?
Answer:
The ones in bold are the answers. I really hope this helps you.
Explanation:
Blood sugar is too high. Pancreas releases insulin to stimulate the liver and store glucose to break down sugar from the blood and store it as glycogen or glucose. Blood sugar levels decreases.
Blood sugar level is too low. Pancreas releases glucagon to stimulate the glucose production in the liver and maintain adequate plasma glucose concentrations to convert stored glucagon and fat back into glucose to be released in the blood. Blood sugar levels increases.
Good luck... ^.^
HURRY! I ONLY GOT SO LONG
The best descriptions are those that correctly describe the terms or concepts ecology.
Which descriptions best fit the given terms?The study of living things and their non-living is ecology.
The description of a given term provides information about that term or concept.
The best description of the given terms are as follows:
Mutualism - a relationship where both organisms benefits Commensalism - a a relationship where one organism benefits and the other is unaffected Producers - organisms that make their own foodFood web - show energy flow in an ecosystem Biome - a large area defined by climate and organisms that live there Stability - ability of an ecosystem to respond to change Exponential - growth pattern at constant rateCarrying capacity Food chain Limiting factor Parasitism Trophic levels Biodiversity Abiotic factors Population ClimateBiosphere Consumers Keystone speciesCommunityTherefore, the best descriptions are those that correctly describe the terms or concepts.
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Which structure controls what enters and leaves the cell?
A) cell membrane
B mitochondria
c) cell wall
D nucleus
The "Cell Membrane" controls what enters and exits the cell and thus protects the cell.
Answer: A: The cell membrane
Explanation: Hope this helps!
How is an
anatomical
adaptation
defined?
A. a system present within the
organism that allows it to perform a
biochemical reaction
B. a feature of the organism's body
that helps it survive and reproduce
C. a response from the organism that
changes it's behavior to help it survive
and reproduce
Anatomical adaptations involve every change in the organism's external structure. Option B. A feature of the organism's body that helps it survive and reproduce.
What is an anatomical adaptation?Anatomical adaptations are changes in the external structure of the organisms that help them survive and reproduce in a certain environment.
These adaptations allow the organisms
to camouflage if necessary (to scape from a predator or to hunt their prey, for instance), to protect themselves by imitating dangerous species' colors and shapes, to develop special structures needed to feed and move in that specific environment.
There are other two types of adaptations apart from anatomical ones. These are physiological and behavioral adaptations.
Options
A. a system present within the organism that allows it to perform a biochemical reaction ⇒ This is a physiological adaptation
B. a feature of the organism's body that helps it survive and reproduce ⇒ This is an anatomical adaptation
C. a response from the organism that changes it's behavior to help it survive and reproduce ⇒ This is a behavioral adaptation
The correct option is B. a feature of the organism's body that helps it survive and reproduce
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Select the correct answer.
Which is the correct definition of a large animal?
O A.
an animal that lives outdoors
OB.
an animal used for food, farming, or agriculture
OC. an animal of a large size that needs daily care
OD. an animal that needs large farms
Answer:
OC is the correct answer
The higher the __________ content of a DNA, the ________ the melting temperature, and the ________ the ionic strength, the ________ the melting temperature. A:T; higher; higher; lower G:C; lower; higher; lower G:C; higher; lower; lower A:T; lower; lower; higher G:C; higher; higher; lower
Answer:
G:C, higher, higher,
Explanation:
G:C have 3 Hydrogen Bonds, A:T only 2. So, G:C bind stronger to each other, so higer ionic strengh and higher melting temperature.
*the last gap and the first gap seem to be the same question
what is ecological succession?
Answer:
Yellow
Explanation:
The change an ecosystem experiences over time
The change in ecosystem experiences over time.
In simpler words, the process in which there is a change in species, as well as habitat, occurs over some time.
Which of the following is a direct result of deforestation? (4 points)
Fewer storms
Habitat loss
Increased oxygen levels
Severe weather increase
The direct result of deforestation is habitat loss.
What is deforestation?Deforestation is defined as the purposeful felling of trees which are used for domestic use and the space created is used for agricultural purposes
The direct impact of deforestation is the effect it has on the arboreal habitat. The animals that live on trees have their habitats destroyed.
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Which surface attaches to the underlying epithelial cells or deeper tissues?.
Answer:
the surface that attaches to the underlying epithelial cells is the basal lamina
Explanation: