Answer:
The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions. One is to transport nutrients into the cell and also to transport toxic substances out of the cell.
Fossils are used to study(1 point) organisms that once lived. organisms that once lived. how ancient animals behaved. how ancient animals behaved. organisms that live today. organisms that live today. phylogenetic trees.
We can confirm that fossils are used in order to study organisms that once lived.
What are fossils?Fossils are a term we use to refer to the remains of prehistoric organisms. This means organisms that lived a very long time ago. Fossils are notoriously rare and difficult to find and can come in varying stages of preservation. These fossils provide valuable information as to the species of organisms that existed many centuries ago.
Therefore, we can confirm that fossils are used in order to study organisms that once lived.
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The primary sources of renewable energy in the united states are:.
Evidence shows that some grasses benefit from being grazed. Which of the following terms would best describe this plant-herbivore interaction?
a) parasitism
b) commensalism
c) mutualism
d) competition
Answer:
mutualism, both the grazer and the grass benefit.
Explanation:
what's another word for hindered?
Pancreatic enzymes are secreted in response to a hormone called __________.
Cholecystokinin is hormone that is secreted in response to pancreatic enzymes.
What is Cholecystokinin?Cholecystokinin is a peptide hormone that is secreted by the duodenal mucosal of enteroendocrine cells as a result of stimulation of food by chemical substances. This hormone help to activate pancreatic enzyme secretion when it stimulate some cells of vagal afferents.
Therefore, Cholecystokinin is hormone that is secreted in response to pancreatic enzymes.
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Name the clear watery liquid that surrounds the brain and spinal cord and fills the four cavities or ventricles of the brain.
Explanation:
cerebrospinal fluid clear watery liquid that surrounds the brain and spinal cord and fills the four cavities or ventricles of the brain.
The allele for a blue skin color, B, is dominant to the allele b which codes for gray-colored skin. He decided to mate a lizard that is heterozygous with a lizard that is gray. What proportion of the offspring will be gray?
An example of a parasympathetic pathway is the innervation of the heart: The ____________ nerve fibers carry action potentials from the brain toward the heart.
The vagus nerve fibers carry action potentials from the brain toward the heart.
What is vagus nerve?The vagus is a nerve that performs the role in sensory, motor, and secretory functions. It contains about 80% sensory fibers. The vagus nerves comes from the brain towards the carotid artery of the heart.
So we can conclude that The vagus nerve fibers carry action potentials from the brain toward the heart.
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What important discovery was made by columbia university researchers concerning carbon dioxide levels using data from biosphere 2?.
Answer:
Explanation:
Theorizing the chemistry of the calcification process, however, Biosphere 2 collaborators such as Marlin Atkinson of the University of Hawaii and Chris Langdon, Taro Takahashi, and Wallace Broecker of Lamont-Doherty Earth Observatory hypothesized that rising atmospheric CO 2 levels, which increase the partial pressure of CO 2 dissolved in seawater, might also exert important effects by changing the equilibrium of calcium carbonate and bicarbonate ions, making calcium carbonate less available to the living coral organisms.
. How do the bases bond together? A bonds with _____ G bonds with _______
Answer:
A bonds with U and G bonds with C
Explanation:
hope it helps <3333
Answer: A bonds with T and G bonds with C
Explanation: I think itss correct
What do the black bars represent in this spectrum?
cosmic background radiation interfering with those wavelengths
errors in collecting color spectrum of the star
wavelengths of light that are absorbed in the star's atmosphere
wavelengths of light that are invisible to the human eye
Answer:
cosmic background radiation
Explanation:
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HELP HELP PLEASEEEEEE
Haldane, a Soviet scientist, proposed in 1929 that a combination of carbon dioxide, water, and ammonia, when exposed to ultraviolet light, can form a variety of organic molecules. The conditions modeled by Haldane's experiment simulated the oceans of early Earth. Which hypothesis of the origin of life on primitive Earth is described by Haldane's experiment? A) panspermia hypothesis B) abiogenesis hypothesis C) primordial soup hypothesis D) hydrothermal vent hypothesis
Select ALL the correct answers.
Which statements correctly describe mutations in gametes and mutations in somatic cells?
O Mutations to somatic cells are transferred to daughter cells.
O Mutations to gametes are more likely to be beneficial than mutations to somatic cells.
0 Mutations to somatic cells are only present in the type of cell in which the mutation occurred.
O Mutations to somatic cells will be inherited by an organism's offspring.
O Mutations to gametes do not involve changes in the DNA.
O
Mutations to gametes can be passed on to an organism's offspring.
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Answer:
Mutations to somatic cells are only present in the type of cell in which the mutation occurred.
What is meant by the term double circulation?
Answer: This means that two diffrent pumps in the body that work at the same same time to move blood in 2 diffrent directions
What type of creature accounts for 25% of all plant and animal species.
beetle
hope it helps...!!!
Can someone please help me? :(
Answer:
b each cell is able to carry out all functions
In terms of sequence variation, which of the following is least like the others? SNP inversion deletion translocation
In terms of sequence variation, the one that is least like the others is SNP. Option A
What is sequence variation?Generally, The word "genetic variety" refers to the variance in the DNA sequence in each of our genomes.
In conclusion, SNP is the only none structural variation, which involves above one base twin in variation, whereas SNP only shows variation in a single base pair.
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why human cell is considered as eukaryotic cell where as bacterial cell as prokaryotic cell
Answer:
Humans are eukaryotes. Like all other eukaryotes, human cells have a membrane-bound organelles and a definite nucleus.
Bacteria lack a membrane-bound nucleus and other internal structures and are therefore ranked among the unicellular life-forms called prokaryotes.
Explanation:
Prokaryotic cells are much smaller than eukaryotic cells, have no nucleus, and lack organelles.
Hello people ~
Plants with ovaries having only one or a few ovules are generally pollinated by
(a) bees
(b) butterflies
(c) birds
(d) wind
Answer:
a
Explanation:
bees are a primary pollinator
Answer:
bees
Explanation:
Plants having ovaries also require pollinationThey are usually honey providersSo they get attracted by the honey bees most .Option A
Part D
Add a few toy houses in various places along the riverbank in your model. Your houses should be on top
of the sand, and directly on the river's edge. Describe what happens to the houses over time as the water
flows through the river. Based on your observation, describe the negative impact erosion can have on
human settlements around rivers.
In task 2 I only did part D
answer:
Two independent sets of observations on sand activities in relation to the flowing river are recorded as the water passes through the meandering river. Stream abrasion can affect the morphology of a stream or river dramatically over time. Because the water can start erosion with anything near it, erosion can impact human communities near rivers.
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How many countries does the amazon rainforest cover?.
Answer:
9
Explanation:
What role do chemosynthetic bacteria play in deep-sea volcanic-vent ecosystems?
Answer:
Through the process of chemosynthesis, bacteria provide energy and nutrients to vent species without the need for sunlight
Explanation:
hope this helps
Unlike eutherians, both monotremes and marsupials ________.
Answer:
The answer is have some part of embryonic development outside the uterus.
Explanation:
Unlike eutherians, both monotremes and marsupials have some part of embryonic development outside the uterus.
Is the phenotype that corresponds to the HbS allele harmful, beneficial, or both?
Explain your answer
Phenotype is referred to as the expressed trait that is caused by a certain combination of alleles.
What is phenotype?Phenotype is referred to as the expressed trait that is caused by a certain combination of alleles. We will recall that the HbS allele is responsioble for the anemia that results from sickle shaped red blood cells.
This phenotype is both harmfull and benefical in the sense that it leads to the agglutination of the red blood cells in individuals that have this phenotype and eventual crisis. Also, it is beneficaila in that nthose who possess this phenotype do not suffer from malaria in the tropics.
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Explain why increasing the trophic level always results in a decrease in organisms
(biomass) and energy.
Answer:
With less energy at higher trophic levels, there are usually fewer organisms as well. Organisms tend to be larger in size at higher trophic levels, but their smaller numbers result in less biomass. Biomass is the total mass of organisms at a trophic level.
Answer:
Increasing the trophic level always results in a decrease in organisms (biomass) and energy because When energy decreases, it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level.
Only a fraction of the energy available at one trophic level is transferred to the next trophic level. Typically the numbers and biomass of organisms decrease as one ascends the food chain.
Which is the most likely evolutionary response of birds to a food supply of insects living in deep, narrow tunnels?.
Answer:
In trees, birds like woodpeckers have a skull where the tongue wraps around the brain so the brain does not get skaken around. When the woodpecker gets the hole large enough, it sends in its long narrown tongue to get the insect
Explanation:
Birds who look for incects in the ground hop or tap the ground with their beak to mimic rainfall. The bugs come up and the birds can eat them :)
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According to the phylogenetic tree, which shared trait is LEAST LIKELY?
A
Red pandas and raccoons have similar skull patterns that are not shared by the giant panda, spectacled bear, and sloth bear
B
Red pandas, giant pandas, and raccoons have similar tooth patterns that are not shared by the spectacled bear and sloth bear.
С
Giant pandas, spectacled bears, and sloth bears have similar facial bones that are not shared by the red panda and raccoon.
D
Red pandas, giant pandas, raccoons, spectacled bears, and sloth bears have forearms consisting of a radius and an ulna.
Answer:
A
Explanation:
Patterns change with different species
Red pandas and raccoons have similar skull patterns that are not shared by the giant panda, spectacled bear, and sloth bear is correct regarding phylogenetic tree.
What is phylogenetic tree?
A phylogenetic tree, also called a phylogeny, is a diagram that shows the evolutionary branches from which various species, creatures, or genes have descended from one another.
Phylogenies are helpful for classifying organisms, organizing knowledge of biological diversity, and shedding light on evolutionary processes.
Furthermore, one needs to comprehend phylogenies in order to fully appreciate the overwhelming evidence in favor of evolution since these trees demonstrate descent from a common ancestor and since common ancestry constitutes most of the strongest evidence for evolution.
Therefore, Red pandas and raccoons have similar skull patterns that are not shared by the giant panda, spectacled bear, and sloth bear is correct regarding phylogenetic tree.
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A cross between heterozygotes for a single trait will lead to a genotypic ratio of 1:2:1. How many phenotypes will be observed if incomplete dominance is occurring
There will be 3 phenotypes observed if incomplete dominance is occurring in this organism.
What is incomplete dominance?The so-called incomplete dominance is the one in which the alleles are expressed in heterozygosity, however, they produce an intermediate phenotype, since none is totally dominant. In the case of complete dominance, the phenotype is equal between zygotes and heterozygotes.
With these information, we can conclude that there will be 3 phenotypes observed if incomplete dominance is occurring in this organism.
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Comprehension Questions:
1. Photosynthesis and cellular
respiration are
cells.
chemical reactions
physical reactions
that occur in
Photosynthesis and cellular respiration are chemical reactions that occur in cells.
What is photosynthesis and cellular respiration?Photosynthesis is the process of making food through carbon dioxide, water and sunlight. It is an anabolic reaction.
Cellular respiration is the process of breaking down of food molecules by oxygen. It is a catabolic reaction.
Thus, the correct option is a, chemical reaction
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brainliest! no links, theyll be reported fill in the blanks rock cycle
Answer:
Tried my best to write them but didn't want to make the lettering too small. If you cant read one just let me know ill tell you through comments. Hope this helps.
Explanation: