Answer:
D. on fern leaves (fronds)
hope it's help
Answer:
D. on fern leaves (frondes)
Hope it's help you
What structure of nerve cells (neurons)
allows for communication throughout the
body?
Answer:
While neurons have a lot in common with other types of cells, they're structurally and functionally unique. Specialized projections called axons allow neurons to transmit electrical and chemical signals to other cells. Neurons can also receive these signals via rootlike extensions known as dendrites.
Explanation:
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Can someone help me please, I just want to understand how to do it
Question 10
The part of the hemoglobin molecule that combines with oxygen is the heme.
O True
False
Is it true or false
Answer:
Its true!!Explanation:
Actually the haemoglobin molecule consists of 2 parts, the haem which is a prosthetic group and the other globin which is a protein. So the haemoglobin as is a protein so, is arranged in quaternary structure of protein which contains 4 subunits. The subunits depend upon the organism whose haemoglobin is being talked about. So the normal haemoglobin found in red blood cells contains 2 alpha subunits + 2 beta subunits. At the centre of each subunit there is the haem part attached. To the centre of haem the Fe3+ ion are present which actually attaches to 1 Oxygen molecule. So as 4 subunits are present and each subunit has 1 Fe3+ ion, so total 4 Oxygen molecules can bind to the 1 Hb molecule!!
which organ of the body produces the fluid know as bile?
A. liver
B. pancreas
C. gallbladder
D. kidney
Answer:
A-Liver
Explanation:
Answer:
A. Liver
Explanation:
The liver produces bile. The gallbladder stores bile. The pancreas convert food to fuel. The kidneys job is to cleanse the blood.
Hope it helps!
find the meaning of ductile
Answer:
Ductility is usually defined as the extent to which a material can be deformed plastically and measured in uniaxial tension.
Explanation:
why water is called heating and cooling agent
If animal cells do not perform photosynthesis, then how do they get the glucose they need to perform cellular respiration?
Answer:
From eating things
Explanation:
Depending on where they are in the food chain, one animal eats a plant (absorbing it's energy), the next animal eats that animal(absorbing its energy)...etc.
If two parents both have purebred recessive traits, what is the probability of their offspring having a dominant trait?
1
1
1
REDUCE
How can I reduce the waste I produced?
Answer:
Don't produce any waste. It's technically right
Explanation:
What does this pyramid tell us about the population?
The population is growing.
The population is stationary.
The population is declining.
Answer:
Explanation:
the population is stationary
Answer:
The population is declining.
Explanation:
I just took the test its not staionary
The movement of molecules against a concentration gradient occurs during?
Answer:
In active transport, the particles move across a cell membrane from a lower concentration to a higher concentration.
what is the taxonomy of cryptosporidium?
4 Select the correct answer. A family has a Y-linked disease that affects the father. What is the chance of a male offspring inh А. 100% OB. 50% Oc. 25% OD. 0% Reset Next
Answer:
Remember that males have an x and y chromosome, while women have two x chromosomes.
Explanation:
This means that a female offspring (daughter) inherits her father's only x chromosome and one of her mother's x chromosomes, while a male will receive his father's y chromosome and one of his mother's x chromosomes.
This means that the boy will necessarily inherit his dad's Y chromosome, and any diseases that it carries.
The chance of a male offspring inheriting the disease is
A) 100%
Answer:
Mother
Explanation:
This mutation needs two X chromosomes. Only the mother has two X chromosomes (XX). The father is male, so he only had one X chromosome (XY).
What type of succession is shown in the picture?
Answer:
secondary succession
Explanation:
intermediate species
Answer:
Primary succession
Explanation:
Primary succession is one of two types of biological and ecological succession of plant life, occurring in an environment in which new substrate devoid of vegetation and other organisms usually lacking soil, such as a lava flow or area left from retreated glacier, is deposited. In other words, it is the gradual growth of an ecosystem over a longer period of time.
Do producers in an ecosystem transfer all their energy to first-level consumers?
Answer:
Producers in an ecosystem transfer all their energy to primary-level consumers. Organisms at higher trophic levels tend to be fewer in number than those at lower trophic levels. ... The lowest trophic level of any ecosystem is the producers.
What traits do you think mice have to help them escape from owls
Answer:
Speed.........................................
In one species of bird, there are three varieties of feather color. What is this an example of?
ecosystem diversity
species diversity
genetic diversity
color diversity
Answer:
genetic diversity
Explanation:
Genetics have many diversities
Answer: C. genetic diversity
Explanation: TRUST ME!!! Answer is correct on Edge!!! :)
Describe how the conservation of matter and energy is applied to stellar formation. In your answer discuss the early components of stars and what happens at the end of stellar lifecycles. Think about the matter in a star and what happens to it.
Answer:
Explanation:
DNA polymerase has multiple mechanisms for editing and error correction whereas the capacity for error correction in RNA polymerases seems to be quite limited. However, like DNA mutation, an RNA polymerase error in transcription can cause production of a mutated protein. The limited error correction of RNA polymerase seems to be inconsistent with the potential serious consequence of producing a protein with an altered amino acid sequence. Select three reasons that explain why error correction is not as necessary in RNA polymerases as it is in DNA polymerases.
The given question is incomplete as the option are not provided however, the correct options are as follows:
Defective proteins are often degraded quickly, making their effects temporary.
Single amino acid substitutions caused by errors in mRNA transcription would not affect protein function.
Unlike DNA mutations, mRNA transcripts have short half-lives and are not inherited across many generations.
Degradation of defective proteins activates mRNA repair pathways RNA polymerases synthesize many transcripts per gene, so only a small fraction of RNA transcripts would have errors.
ch mRNA molecule is only translated once and then degraded
Answer:
The correct answer is - statements 1, 3, and 4.
Explanation:
DNA polymerase is the enzyme that is responsible for the production of the new DNA molecule and any mutation in this enzyme that will inhibit the DNA repair process which affects future generations.
RNA polymerase is an enzyme that is responsible for the transcription of DNA to mRNA and any error-prone mRNAs have chances of degradation. Error in DNA replication is from generation to generation as it is inherited
The process of transcription is quick.
look at the image of the water drops on the leaves. predict where this water came from and where it will go.
Answer:
It was raining earlier on, now that it has stopped these droplets accumulated on the leaves, soon they will drip down to the ground.
Answer:
This water etheir cane from rain a moring dew, the water will etheir be absorbed by the plant or fall onto the groung to eventually repeat the water cycle.
The image shows a plant cell containing chloroplasts.
nucleus
ribosome
mitochondrion
Golgi complex
cell wall
cell
membrane
-chloroplast
vacuole
What is the main function of chloroplasts in a plant cell?
Choose the correct answer.
They produce proteins and carbon dioxide.
They store water, oxygen, and carbon dioxide.
They transform light, water, and carbon dioxide into sugar and oxygen.
They protect cells from chemicals found in the surrounding environment.
Save and exit
Answer:
they transform light, water and CO2 into sugar and oxygen via photosynthesis
Explanation:
Check your understanding! Mark any that are correct.
Mutations are random.
Mutations are most beneficial and useful for an organism.
Mutations can occur in both DNA and RNA, which are nucleic acids.
Mutations can only occur during interphase.
Not all genes code for proteins.
Not all genes are “turned on” at a given time.
Substitution mutations typically result in a frameshift mutation.
Mutations can be genetically inherited.
Answer:
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Some people cannot digest milk products because they lack an enzyme to break down lactose in milk.
Which enzyme is it?
A. hydroxylase
C. maltase
B. Lactase
D. peroxisomes
Answer:
Lactase
Explanation:
please answer soon
Match the adaptations with their benefits.
help to search for food = the owl large eyes
What is photosynthesis?
Answer:
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.
Explanation:
A synthetic 20 amino acid polypeptide named Betanova was designed as a small soluble molecule that would theoretically form stable beta-sheet structures in the absence of disulfide bonds. NMR of Betanova in solution indicates that it does, in fact, form a three-stranded antiparallel beta-sheet. Given the sequence of Betanova below where would you predict lie the turns in this sequence.
Draw the structure of Betanova showing strands and turns:
Betanova RGWSVQNGKYTNNGKTTEGR
Answer:
The β-Turns in this sequence are two and include the Glycine (G), the two anterior amino acids, and the one posterior amino acid.
You will find the molecule image in the attached file.
Explanation:
β-Turns are structural elements that intervene in the orientation of the polypeptide backbone. These are short sequences of amino acids, with a characteristic conformation, that imposes a sharp 180º turn on the polypeptide chain. They are very abundant in globular proteins, such as Betanova, connecting the two adjacent antiparallel segments of the sheet.
They are mostly composed of four amino acids. In most cases, the third amino acid is usually Glycine, and in other cases, the second amino acid is Proline. In any case, the first residue of the sequence forms a hydrogen bridge with the last residue of the sequence, linking the amide-group of the last amino acid with the carbonyl-group of the first amino acid in the sequence.
According to the given sequence of the protein, we can find two specific regions in the molecule that contains glycine (G). Proline is not present in Betanova. Following the theory, in most turns, Gly seems to be the third amino acid of the short sequence. So, we can assume that the first two amino acids that are located before the G and the amino acid located after the G, are the ones that compose the β-Turns.
RGWSVQNGKYTNNGKTTEGR
The first turn (QNGK) turns the direction of the polypeptide 180º, going forward to the opposite side.The second turn (NNGK) turns again the direction of the polypeptide, driving the last strain to the other side.In the attached image, you will find the structure of Betanova showing strands (black arrows) and turns (red arrows).
In a normal cellular protein, where would you expect to find a hydrophobic amino acid like valine?
A.In the interior of the folded protein, away from water.
B.On the exterior surface of the protein, interacting with water.
C.In the transmembrane portion interacting with lipid fatty acid chains.
D.In the interior of the folded protein, away from water, or in a transmembrane portion interacting with lipid fatty acid chains.
E. Anywhere in the protein, with equal probability.
Answer:
D. In the interior of the folded protein, away from water, or in a transmembrane portion interacting with lipid fatty acid chains.
In a normal protein, it is expected to find valine in the interior of the folded protein, away from water, or in a transmembrane portion, interacting with lipid fatty acid chains (Option D).
Aminoacids can contain hydrophilic side chains that interact with water molecules or hydrophobic side chains that cannot make hydrogen bonds and therefore do not interact with water.
In membrane protein, hydrophilic amino acids are arranged so they can interact with water on the surface of the cell membrane,
Moreover, hydrophobic amino acids of membrane proteins are arranged away from water so they can interact with fatty acid chains in the transmembrane portion of transmembrane proteins or with other hydrophobic amino acids in the interior of the folded protein.
In conclusion, in a normal protein, it is expected to find valine in the interior of the folded protein, away from water, or in a transmembrane portion, interacting with lipid fatty acid chains (Option D).
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Complete the flowchart to show the stages of cellular respiration and fermentation.
Cellular Respiration and Fermentation
Answer:
The stages of cellular respiration are: Glycolysis, pyruvate oxidation, Krebs cycle and phosphorylative oxidation.
The fermentation stages are: glycolysis and pyruvate regeneration.
Explanation:
Cellular respiration is a biochemical process that occurs in all aerobic organisms and aims to promote the obtaining of the necessary energy so that the cells can perform the activities they need to perform. Cellular respiration occurs in mitochondria and oxygen must be present in the process.
Fermentation is the biochemical process that replaces cellular respiration in organisms that do not survive in the presence of oxygen, the anaerobic organisms that are some fungi and bacteria. Fermentation also aims to produce cellular energy.
Abiotic factors in an ecosystem might include one or more of the following:
Question 1 options:
Slug, ants, coyote,, birds, and armadillo
Slug, ants, coyote, birds, armadillo, trees, grass, flowers and moss
Air, water, soil, and rocks
Air, water, soil, rocks, and fish
Answer: Air, soil, water, light, salinity and temperature
Explanation: Abiotic factors are the non-living parts of the environment that can often have a major influence on living organisms. Abiotic factors include water, sunlight, oxygen, soil and temperature.
Consider three different recessive mutations in Drosophila: a, b, and d. The corresponding wild type alleles are A, B, and D. A female heterozygous for these three linked genes is crossed with a male showing recessive phenotype for all three traits. The resulting offspring are shown below:
Phenotype
Number of progeny
ABD 48 , abd 52, AbD 6, aBd 4, ABd 97, abD 93, aBD 348, Abd 352
1.What is the gene sequence?
2.What is the distance between gene A and D in cM?
Answer:
48
Explanation: