Answer:
A
Explanation:
explain how blood flows through the heart
Answer:The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.
Explanation:
the original amount of po-239 was 5725 g, How much would be remaining after 4 half lives
Answer:
correct love
Explanation:
your right
Will give brainliest
Explain inputs of photosynthesis and how each is used
Answer:
Inputs are in the other answer, and since you asked I'll give the outputs:
glucose (for the plant - created by the Calvin Cycle [through the input of Carbon dioxide]) and oxygen (which the plant does not require, so it exits the plant - created through the water input)
If you want to get really technical, the input light is absorbed and its energy is used to drive electrons from the water. These electrons generate NADPH, which drives protons across the membrane. The protons will then return to make ATP (which is through ATP synthase). (There are some good diagrams of this you could find on the internet for a better visual if needed, but since they aren't mine, I feel I should not post them)
How do seed plants loose water, and how do they prevent too much water from being lost.
Answer:
Plants reduce water loss by closing their stomata, developing thick cuticles, or by possessing leaf hairs to increase the boundary layer. Stomata are quick to respond to environmental cues to protect the plant from losing too much water, but still allowing in enough carbon dioxide to drive photosynthesis.Explanation:
keep learning dude;)
Which of the following are characteristics of
Zygomycota? Check all that apply.
Answer:
Formation of a zygospore during sexual reproduction.
The lack of hyphal cell walls except in reproductive structures.
Answer:
3.spores produced in zygosporangia
5.important in the fermentation process
These are the correct answers on Edge 2020
Do you think human population growth is a concern in the United States?
Step 1: Decide if you think human population growth is a concern or not.
Step 2: Copy the sentence starter that goes with your opinion into the response box.
Step 3: Finish the sentence by writing a reason that helps explain your opinion.
Sentence starters:
Yes, I think the population growth is a concern because...
No, I think the population growth is not a concern because...
i cant find science so i biology
Answer:
1. Yes, I think human population is a concern because of the strain it will put on farmers and food workers to produce an adequate amount of food for the extra population. Also, there is alreadfy low livable space in every country, the standard of living will go down in The United States if there is a larger population, earth is already overpopulated.
Explanation:
Im not sure if this is what you specifically need, but this is just my response to the question, "Do you think human population growth is a concern in the United States?"
Please help! Will mark brainiest if you answer 3 to 5 questions.
13. Which organism will have 100% of the energy? Why?
14. Which organism will get 10% of the energy? Why?
15. Which organism will get 1% of the energy? Why?
16. Will any organisms have .1% of the energy? Which ones?
17. How does this food web cycle carbon?
18. How does this food web cycle nitrogen?
19. The insect eating bird and shrew both eat grasshoppers, what is called when 2 organisms fight over the same prey?
15. HERBIVORES AND DERTIVORES BECAUSE THEY ARE SMALL IN SIZE
16. HERBIVORES AND DETRIVORES.
pleaseeeeeeeeeeeeeeee helppppppppppp
Answer:
It's the second answer or B
Explanation:
answer and show proof and ill give brainliest
Answer:
a
Explanation:
organism 1 it's the only one that doesn't have a source of energy
What are the four classes of nutrients?
Answer:
carbohydrates
lipids
proteins
water
Which observations support the student's claim that the
log represents a microhabitat?
Answer: Observation 1,2,3
HELP PLEASE
What behavior allows newborn animals to recognize and follow the first moving object they see?
Question 4 options:
conditioning
courting
mimicking
imprinting
If you cross parent 1 (Rr) with parent 2 (Rr), what percentage of the offspring will have a purebred geneotype?
A:) 25%, 1/4
B:) 50%, 2/4
C:) 75%, 3/4
D:) 100%, 4/4
answer:c
Explanation:
first we will multiply parent 1(Rr)and parent 2(Rr) like the photo above
PLEASE HELP I WILL GIVE BRAINLIEST
Why would someone be in pain when showering with ceratopogonidae bites?
Answer:
the midge will pierce the skin with her mouth and pump saliva into the wound to prevent it clotting. It's this saliva which causes a mild immune response in humans, resulting in itchy red spots as the body seeks to repair the wound.
Explanation:
because the people want to scratch the bites which makes them worse
Answer:
YES,the midge will pierce the skin with her mouth and pump saliva into the wound to prevent it clotting. It's this saliva which causes a mild immune response in humans, resulting in itchy red spots as the body seeks to repair the wound.
Please select the word from the list that best fits the definition
make food from sunlight, water and carbon dioxide
consumers
decomposers
producers
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Which term is associated with asexual reproduction but not sexual reproduction?
A. fertilization
B. conjugation
C. Fission
Answer:
B
Explanation:
Identify the true statements about RNA interference. Duplex RNA (dsRNA) can suppress the expression of a gene. miRNAs are short, single strands approximately 21 nucleotides long. miRNAs suppress gene expression by interfering with transcription. miRNA targets the gene from which it was transcribed. RNA interference can temporarily suppress the expression of a target gene.
Answer:
- Duplex RNA (dsRNA) can suppress the expression of a gene.
- miRNAs are short, single strands approximately 21 nucleotides long.
- miRNAs suppress gene expression by interfering with transcription.
- RNA interference can temporarily suppress the expression of a target gene.
Explanation:
The RNA interference (RNAi) mechanism is a naturally occurring biological process by which an organism suppresses gene expression by using sequence-specific small non-coding RNAs that are complementary to RNA (posttranscriptional silencing) or DNA (transcriptional silencing) sequences. Since its discovery, this mechanism has been exploited in molecular biology to control the expression of target genes. There are different classes of non-coding RNAs which are able to trigger RNAi gene silencing: microRNAs (miRNAs), small interfering RNAs (siRNAs), piwi-interacting RNAs (piRNAs, only present in animals), etc. During their functioning, these non-coding RNAs are loaded into the RNA-induced silencing complex (RISC) to direct them to target sequences and trigger RNAi (for example, by cleaving target mRNAs). miRNAs are short, evolutionary conserved RNAs, that associate to the RISC complex in order to trigger both transcriptional and posttranscriptional gene silencing. During their biogenesis, small non-coding RNAs are double-stranded RNA (dsRNA), but they lose a strand (the passenger strand) when associate with the RISC complex, conserving only one strand (the guide strand) that bind by complementary base pairing to target sequences (either DNA in the nucleus or RNA in the cytoplasm).
Which of the following best predicts a long term effect of the differences between the E and Z strains
Answer:The difference between the forms of the sex pheromone 11−TDA produced by E and Z strains will act as a prezygotic reproductive barrier leading to sympatric speciation.
Explanation:The difference between the forms of the sex pheromone 11−TDA produced by E and Z strains will act as a prezygotic reproductive barrier leading to sympatric speciation.
Conducting long-term studies to observe the effects of E and Z strains would best predict the long-term effects of their differences.
What are E and Z strains?In biology, E and Z strains are used to describe different genetic variants or subpopulations of a species. These designations are often used in studies of insects, particularly in the context of reproductive isolation and speciation.
For example, in some species of moths, E and Z strains are distinguished based on differences in the production of sex pheromones. Females of each strain produce different forms of the pheromone, which may act as a barrier to mating between individuals of different strains. Over time, this could lead to the development of distinct populations that are reproductively isolated from each other, potentially leading to the formation of new species. Other factors, such as geographic isolation and genetic drift, may also contribute to speciation in these and other organisms.
Learn more about bacterial strains, here:
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What is the role of ATP in cross bridge cycling
Answer:
ATP is responsible for cocking (pulling back) the myosin head, ready for another cycle. When it binds to the myosin head, it causes the cross bridge between actin and myosin to detach. ATP then provides the energy to pull the myosin back, by hydrolysing to ADP + Pi.
Answer:
ATP is responsible for cocking (pulling back) the myosin head, ready for another cycle. When it binds to the myosin head, it causes the cross bridge between actin and myosin to detach. ATP then provides the energy to pull the myosin back, by hydrolysing to ADP + Pi.
Explanation:
Question 21 of 32 What is the function of the nucleus? O A. To control what enters and leaves the cell O B. To store the cell's genetic material C. To provide the cell with energy D. To combine amino acids to make proteins
Answer:
B. To store the cell's genetic material.
Explanation:
Hope this helps! :) :P
Help pls ;<; /A city lies near a forest. The city leaders decide the forest should be protected. There is a stream running through the forest, too. Which action would preservationists and conservationists agree on? A. Some fish can be caught in the stream. B. Fighting forest fires should be allowed. C. The forest and stream should be protected. D. Hunting shouldn’t be allowed in the forest. E. People should be allowed to camp in the forest.
Answer: fighting forest fires should be allowed
Explanation:
Answer: C: The forest and stream should be protected.
Explanation:
Answer the lab question, “What is the effect of the inheritance of one trait on the inheritance of a second trait?” with a hypothesis. Remember that you can either assume that the two genes are independent or that they are linked. What results would you expect in either case?
Answer:
please give me branlist and follow
Explanation:
One hypothesis would be "The inheritance of one trait does not affect the inheritance of another trait". It can be explained with the help of law of independent assortment. It states that the genes are randomly distributed in the gametes, that is, independent of each other.
When wind speeds are not fast enough to be called a hurricane, what is the name given?
Organisms produce their own energy or provide energy for other organisms in a food chain. Many different organisms can be found in the Amazon rainforest in South America. Organisms in this biome include a variety of trees, plants, insects, fish, birds, reptiles, and mammals. The jaguar and anaconda are among the largest predators found in the Amazon.
A large snake submerged in water. A large, spotted cat called a jaguar, walking on a log.
Photo by Trisha M. Shears Photo by US Fish and Wildlife Service
Which trophic level do anacondas and jaguars fill in the Amazon rainforest?
producer
primary consumer
secondary consumer
tertiary consumer
Answer:D- tertiary consumer
Explanation:
Which of the following is another example of an autotroph? a) mushroom b) grasshopper) cactus
Answer:
Cactus
Explanation:
An autotroph is something that produces food from inorganic substances like carbon dioxide. So, most plants are autotrophs due to their photosynthesis. Cactuses use photosynthesis, so therefore, they’re autotrophs.
The other answers are wrong as one, mushroom is a fungi that relays on decomposed organic materials for food, and grasshoppers need grass.
An example of an autotroph among the options is the organism called cactus.
What is an autotroph?An autotroph is any specie that is able to produce its own food. In the ecosystem, the autotrophs serve as producers in the system.
Hence, given the options we have, an autotroph among them is the organism called cactus.
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In cats, coat color is an X-linked trait with incomplete dominance. Yellow coat is caused by the allele XT and black coat by the allele Xt. A tortoise coat is caused by the heterozygous condition. What is the correct way to represent the genotype of a cat with a tortoise coat
Answer:
The correct answer is - XTXt
Explanation:
In the question, it is given that in cats the coat color is an X-linked trait that shows incomplete dominance if present in heterozygous condition.
The allele for yellow allele = XT (it is dominant allele)
The allele for black coat = Xt (it is recessive allele)
The amle cat can not show the heterozygous condition or tortoise coat as they have only one X chromosome so they will be either yellow coat cats or black coat cats.
In female cats the tortoise coat will show when the both allele present together: XTXt due to their incomplete dominance.
Can somebody help me. Is it A,B,C,D
Answer:B
Explanation:
im pretty sure the answer isB)
I have no idea what a tidal region of an ocean is so please help.
The intertidal zone, also known as the foreshore or seashore, is the area above water level at low tide and underwater at high tide. This area can include several types of habitats with various species of life, such as seastars, sea urchins, and many species of coral.
Organisms in the intertidal zone are adapted to an environment of harsh extremes. The intertidal zone is also home to several species from different phyla (Porifera, Annelida, Coelenterata, Mollusca, Arthropoda, etc.). Water is available regularly with the tides, but varies from fresh with rain to highly saline and dry salt, with drying between tidal inundations. With the intertidal zone's high exposure to sunlight, the temperature can range from very hot with full sunshine to near freezing in colder climates.
So, I think the answer should be (B).
Please help I’ll mark you as brainliest if correct
Answer:
Genes and Nucleus
Explanation:
Give me brainiest please those cells are offspring which gives reproduction
In diagrams a full moon is represent with a
A. A white circle
B. A completely shaded circle
Answer:
A
Explanation:
cause you can see the entire moon at night(if there are no clouds present)