Inside the chloroplast (a membrane-bound organelle present in plant cells)
the pancreas produced a special hormone, which stimulates the absorption of blood sugar. This hormone is called?
A adrenaline
B glycogen
C glucagon
D insulin
Answer:
The answer is option D.
Insulin
Hope this helps
Answer:
D. insulin
Explanation:
Insulin is the hormone produced by the pancreas and released when blood sugar is higher than normal. Glucagon is the opposite hormone, used when blood sugar is too low, and more must be freed from reserves of glycogen
Which of the following is true regarding DNA? a) It is single stranded and pleated in shape b) It is used by organisms as a source of energy c) Complementarity states that Adenine will always bind with Thymine d) It is classified as a protein
Answer:
c) Complementarity states that Adenine will always bind with Thymine.
Explanation:
Hope it helps.
Construct the sequence of events leading from a dietary vitamin C deficiency to symptoms such as bruising and breakdown of supporting tissues.
1. tissue levels of ascorbic acid is low
2. enzyme prolyl hydroxylase is inactive
3. proline is not hydroxylated
4. the triple helix is inadequately stabilized .
5. collagen breaks down
6. defects in tissues that depend on collagen
7. tissues that depend on collagen are subject to breakdown and bruising
Answer:
1. the levels of ascorbic acid in the tissues are low
2. the enzyme prolyl hydroxylase is inactive
3. proline is not hydroxylated
4. The triple helix is inadequately stabilized.
5. collagen breaks down
6. collagen-dependent tissue defects
7. Collagen-dependent tissues are subject to breakdown and bruising
Explanation:
Vitamin C deficiency or vitamin C hypovitaminosis generates an oatology called scurvy, in this pathology there are tendon problems and fragility at the tissue and vascular level.
This is because of the low antiquity of vitamin c that is necessary for the correct synthesis of collagen, the collagen helices formed by the fibroblast are considered of poor quality and thus do not fulfill the function of support, containment and body in the tissues.
Vessels are highly contained by collagen and tissues as well, which is why hematomas appear due to vessel rupture and blood exacerbation in the extracapillary medium.
A strain of E. coli carries a mutation that completely inactivates the enzyme encoded in the gene. Several revertants, mutants of the mutant with partly or fully restored activity, were selected, and the amino acid sequence of the enzyme was determined. The only differences found were at position 10 in the polypeptide chain.
Revertant 1 had Thr.
Revertant 2 had Glu.
Revertant 3 had Met.
Revertant 4 had Arg.
Assume that the initial mutation itself, as well as each revertant, resulted from a single nucleotide substitution.
a. What amino acid is present at position 10 in the mutant protein?
b. What codon in the mRNA would encode this amino acid?
Answer:
The correct answer is - a) Lys b) AAG
Explanation:
As mention in question that whatever mutation took place was single nucleotide substitution which changes the complete amino acid here what one can do is he can analyze all 64 codons which code for different amino acids to find out.
Revertant 3 which had methionine in the 64 codons one codon codes for methionine which is AUG so we will search for most similar and found that-
Threonine = ACG
Glutamate = GAG
Arginine = AGG
Methionine = AUG
Lysine = AAG
In the mutant protein most possible amino acid present could be lysine as lysine coded by AAG in E.coli and if we do point mutation in the codon of lysine we can get all other four codon for given revertants :
AAG= lysine if second nucleotide converted to C so it will become ACG and will code for threonine as in Revertant 1.
AAG= lysine if first nucleotide converted to G - become GAG and will code for Glutamate as in Revertant 2.
AAG =lysine if second nucleotide converted to U - AUG and will code for methionine as in Revertant 3.
AAG= lysine if second nucleotide converted to G - AGG and will code for arginine as in Revertant 4.
So, lysine codon AAG is the only position in the genetic code that can, in one step, mutate to either Thr, Glu, Met, or Arg.
Thus, the correct answer is - a) Lys b) AAG
The immune system responds to the damage to arteries because of atherosclerosis by: a. destroying foam cells that capture and remove LDL from the artery wall b. promoting the growth of skeletal muscle cells of the artery wall to repair the site c. sending white blood cells to the site to try repair the damage d. reducing the concentration of clotting factors in the blood e. lining the arteries with high levels of HDL cholesterol
Answer:
The correct answer is option C.sending white blood cells to the site to try to repair the damaged
Explanation:
Atherosclerosis is a disease where plaque develops inside arteries. Arteries are vessels that convey oxygen-rich blood to your heart and different regions of your body. Plaque is comprised of fat, cholesterol, calcium, and different substances found in the blood. After some time, plaque solidifies and limits your supply routes.
The immune system responds to Atherosclerosis that causes damage to the arteries by sending white blood cells to the damaged site to fix the damage caused by the plaques and fat deposits that obstruct the blood supply.
The immune system responds to the damage to arteries because of atherosclerosis by C. sending white blood cells to the site to try repair the damage.
The immune system is the process that is important for resistance against diseases and fighting infection. It defends our body against invaders such as bacteria, viruses, etc.
It should be noted that the immune system responds to the damage to arteries because of atherosclerosis by sending white blood cells to the site so that the damage will be repaired.
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Osteoporosis is characterized by Group of answer choices keratinization and death of epithelial cells. defective collagen production. immature red blood cells that lack hemoglobin. loss of bone mass and structure.
Answer: osteoporosis actually caused by lack of calcium
Explanation:
It is most common in womans....
And also immature red blood cells due to which blood calcium level decrease and cause osteoporosis
A scientist is studying antibiotic properties in a species of endangered coral that she believes may be useful in fighting an infection that plagues humans. What is the best way an individual can help this scientist with her investigation of this coral?
Answer:
the scientist can analyse the coral particals under a microscope and
Answer: Be careful not to disrupt coral reefs when snorkeling or fishing, so that the coral and other diverse organisms that live near it, can be studied carefully by scientists.
Explanation: Just took the test.
You perform an experiment in which you take 16 pots of strawberry plants and give half of them 1 gm of ammonium nitrate per liter of water and the other half receive only water. Each group is then split in half again, and exposed to either 8 or 16 hours of light each day. You monitor the height of the plants for 4 weeks. You observe that plants grown in ammonium nitrate and 16 hours of light grow taller than no ammonium nitrate and 8 hours of light.
The reason for the uptake by plants of nutrients like ammonium nitrate is
asexual reproduction.
homeostasis.
evolution.
sexual reproduction.
natural selection
Answer:
homeostasis.
Explanation:
Homeostasis is the process whereby living systems maintain a stable internal environment despite changes in environmental conditions. Plants, like every other living organisms also perform this process to keep their internal environment in a stable state.
According to the question, some plants were exposed to ammonium nitrate, which serves as a nutrient, and 16 hours of sunlight needed for photosynthesis to take place. The plants exposed to ammonium nitrate and 16 hours sunlight grew taller because they had access to nutrients needed to bring about the process of photosynthesis, which provides the plant with energy source (Glucose).
The uptake of nutrients like ammonium nitrate by the plants is done in order to maintain a homeostatic internal environment. Without nutrients, which is the purpose of the ammonium nitrate, plants cannot grow. Hence, the plants exposed to ammonium nitrate, take it in to keep their internal environment functioning.
in a flowering pot, tall is dominant to short, and blue flowers is dominant to white flowers. The top with white flowers is crossed with a short plant with blue flowers. What is the chance that the offspring will be short with white flowers?
Answer:
There is a 0% chance that the offspring will be both short and white flowers.
Explanation:
For this we are going to go in and use the Punnett squares. Let´s identify the dominant and recessive genes.
Tall Flowers are Dominant - T(capital for dominance)
Short Flowers are Recessive - t(lowercase for recessiveness)
Blue Flowers are Dominant - W(Capital for dominance)
White Flowers are Recessive - w(Lowercase for recessiveness)
Let´s set up our chart with the information that we have. Its easy to draw the chart, but we need to understand the genes, and make sure that everything is okay!
There is a picture that I took of the chart on the bottom of the page. You can see the dominance of the Tall gene, and the Dominance of the Blue gene. Because none of the offspring have a chance of being short of white, that makes it impossible to have a percentage any higher than 0%.
UNLESS there is a clear mishap or genetically mutated gene in the flower. We never know! I really hope this helped!
Match the climate zones to their relative tempature levels
The answers are Polar zones - coldest zone; temperate zones-moderate temperature zone; and tropical zones - hottest zone
Explanation:
One factor that influences the temperature is the latitude or location of places north or south from the Equator line (imaginary line that divides the Earth in North and South). In this way, zones in the equator line and near it that belong to tropical zones are the hottest, this is because due to the tilt of Earth they are more directly exposed to sunlight. On the contrary, zones in the poles that are far from the Equator have low temperatures and are the coldest zones on Earth because they are not highly exposed to sunlight. Additionally, temperate zones that are placed between the equator, and the poles have moderate temperature that is not as cold as in the poles or as hot as in the tropical zones.
Two of these answers are mixed up and I need help to figure out which two those are
The sternum is anterior/ventral to the vertebrae.
The feet are inferior to the hands.
The elbows are lateral to the abdomen.
The skin is superficial to the skeleton.
The heart is posterior/dorsal to the sternum.
The lungs are deep to the ribs.
The chest is superior to the abdomen.
The knee is distal to the hip.
The fingers are medial to the thumb.
The elbow is proximal to the wrist.
The answers i have in italics are what i chose. it tells me i have two wrong and i can't figure out which two need switched.
Answer:
The correct answers are "The heart is posterior/dorsal to the sternum" and "The lungs are deep to the ribs".
Explanation:
It is not true that the heart is posterior/dorsal to the sternum. Actually, it is considered that the heart is deep to the sternum, as well as the aorta, vena cava, and thymus gland. On the other hand, the lungs are posterior/dorsal to the ribs. The lungs are located in the thoracic cavity, which is extending anteriorly and laterally to the ribs.
In the large intestine material is stored how many
hours prior to elimination?
Explanation:
After you eat, it takes about six to eight hours for food to pass through your stomach and small intestine. Food then enters your large intestine (colon) for further digestion, absorption of water and, finally, elimination of undigested food. It takes about 36 hours for food to move through the entire colon.
What structure is found mostly in green plant cells but not in animals
Answer:
The answer is Chloroplast.
Explanation:
Chloroplast is a structure in green plant cells which contain a substance called chlorophyll which give plant leaves their green color.
Hope this helps you
The term heterochromatin refers to heavily condensed regions of chromosomes that are largely devoid of genes. Since few genes exist there, these regions almost never decondense for transcription. At what point during the cell cycle would expect to observe decondensation of heterochromatic regions? Why?
Answer:
The correct answer is: S phase.
Explanation:
DNA can be divided into two functional forms: heterochromatin and euchromatin. Heterochromatin refers to the DNA that doesn't code for proteins or RNA, and thus it remains heavily condensed, for there would be no use to use it for transcription or translation. Euchromatin, on the other hand. is the DNA with the genes that can be transcripted into RNA and translated into proteins; for this reason, Euchromatin is less compact than Heterochromatin.
The only point in the cell cycle where Heterochromatin would be decondensed is S phase because, in this part of the cell cycle, the DNA gets replicated in order to prepare for Mitosis. For DNA to be replicated, it first needs to be decondensed to their two strands can be separated and used as guides for the synthesis of the two new strands.
Osteoporosis os most likely to be affected by which cycle
Answer:
phosphorus its correct
Explanation:
Which best describes what happens to ATP during photosynthesis?
A. ATP is produced and then used to produce glucose.
B. ATP is broken down and then not used again.
C. ATP is formed and remains unchanged in the chloroplast.
D. ATP is changed to ADP and then moved to the cytoplasm
A. ATP is produced and then used to produce glucose.
ATP is produced in the light-dependent reactions and used in Calvin's cycle for glucose synthesis
Answer:
A) ATP is produced and then used to produce glucose.
Explanation:
Took the test edge2021
Schilders disease is a progressive degeneration of the central nervous system that leads to death by age 2. The disease is caused by a simple autosomal recessive mutation. A couple loses its first two children to Schilders disease. If they decide to have a third child, what is the probability that it will have the disease
Answer:
The probability will be 25% (1/4)
Explanation:
Schilder's syndrome is a degenerative and progressive lethal disease caused by the demyelination of nerve cells in the brain and spinal cord. Since it is a lethal recessive autosomal disease, both the father and the mother have a single copy of the mutant allele, thereby the probability of obtaining a lethal combination will be:
SN X SN >>
1/2 x 1/2 = 1/4 = 25%
where N and S are normal and lethal alleles, respectivelyvely
Record the height of the plants growing in the
acidic soil.
A. Stating the question or problem
B. Drawing a conclusion
C. Forming a hypothesis
D. Conducting an experiment
Answer:
D. Conducting an Experiment
Explanation:
Answer:
D. Conducting an experiment
Explanation:
The cyclin B–Cdc2 complex controls the passage from G2 into M and is assembled before mitosis however, its catalytic activity is restricted to mitosis. What process is responsible for the activation of the cyclin B–Cdc2 complex?
Answer:
Phosphorylases that selectively add phosphate groups to the Cdc-2 subunit, thereby activating this complex.
Explanation:
The cyclin B-Cdc-2 (also known as maturation-promoting factor or simply MPF) complex is activated when it enters into the nucleus during the G2/M transition in the cell cycle. Cdc-2 is a protein kinase that associates with cyclin proteins. These proteins (cyclins) regulate the cell cycle by activating cyclin-dependent kinases. It is well known that phosphorylation of the Cdc2 subunit at different residues can both activate and inactivate the MPF complex. Moreover, enzymes capable of both inactivating phosphorylases and activating phosphatases have also shown to be able to activate MPF.
Left-sided heart failure is characterized by
Answer:
Left-sided heart failure is a heart condition where the muscle on the left side of the heart is diminished and the pump doesn't work to the body. Left-sided heart failure is defined not as a disease, but a process.
Symptoms:
Left-sided heart failure. Fluid may back up in your lungs, causing shortness of breath. Right-sided heart failure. Fluid may back up into your abdomen, legs and feet, causing swelling. Systolic heart failure.
Explanation:
name 3 important features of blood in your body
Answer:
1. Red blood cells for transportation of oxygen and carbon dioxide in and out the body.
2. White blood cells for fighting against harmful substances in the blood stream.
3. Blood platelets for blood clot during an injury.
Explanation:
Hope it helps.
Select the accurate statement(s) regarding the divisions of the nervous system.
A. The sympathetic division tends to arouse the body for action.
B. The sympathetic division tends to arouse the body for action.
C. The visceral motor division (autonomic nervous system) carries signals to glands, skeletal muscle, and smooth muscle.
The given question is incomplete as there is an option twice and other options are not provided. however, the complete option for the question is as follow:
a) the sympathetic division tends to arouse the body for action.
b) the visceral motor division(ANS) carries signals to glands, skeletal muscle, and smooth muscle.
c) the somatic motor division carries signals to the somas of the neurons.
d) the parasympathetic division tends to have a calming effect.
e) the CNS has both a sensory and motor division.
Answer:
The correct statements are -
a) the sympathetic division tends to arouse the body for action.
d) the parasympathetic division tends to have a calming effect.
Explanation:
The sympathetic division regulates organs and glands during crises. It helps the body in crisis to act on the basis of fight or flight. For instance, it builds the pulse and the progression of blood supply to the legs, so you can flee from risk.
The parasympathetic sensory system is liable for the body's rest and processing reaction when the body is loose, resting, or taking care of. It essentially fixes the work does by sympathetic division after an unpleasant circumstance.
Thus, the correct statements are -
a) the sympathetic division tends to arouse the body for action.
d) the parasympathetic division tends to have a calming effect.
What should be done following health violations from an inspection?
Answer:
correct the identified
Explanation:
If health violations are found out during inspections, the inspector should give him warning about the violation or give him a ticket or fine. If high level of violation if found out, then the license of the restaurant or company should be cancelled.
What is heath violation?Health violation is avoiding the condition that are necessary for health during the process or manufacturing. These violation leads to the poor health of the people.
Health inspectors are the person who check the conditions of hotel and factories related to the health of the people. If they found any violation, the companies should correct them.
Thus, the inspector should issue him a warning about the infringement or issue him a ticket or fee if any health violations are discovered during inspections. If a serious breach is discovered, the restaurant's or business' license should be revoked.
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The amino acids in bacteria and plants can be classified in families based on the precursor molecule in the synthesis pathway of each family member. Each family shares a name with its molecular precursor. Identify the family to which each amino acid belongs.
The given question is incomplete, the complete question is attached in the image format with the answer:
Answer:
1. aspartic acid :
asparagine
methionine
lysine
threonine
2.glutamic acid :
glutamine
proline
arginine
ornithine
3. pyruvic acid :
alanine
valine
leucine
isoleucine
4. chorismic acid :
phenylalanine
tyrosine
trypthophan
5. serine :
cysterine
glycine.
why standard units neeeded
Answer:Because it is scientific and gives accurate results as well as accepted by the world.
Explanation:
Feel pleasure to help u...
Drag the tiles to the correct boxes to complete the pairs. Match the organisms to the descriptions.
Answer:
Ok, no boxes but whatever
Mammals - Endothermic Homeostasis (Warm Blooded), Hairy Body, Have babies live
Birds - Endothermic Homeostasis(Warm Blooded), Have eggs, feathers, claws
Bacteria - Single celled, use binary fission to divide
Fungi - Multi or single celled, have chitin cellular walls
Plants - Have cellulose plant walls, multicellular organism
Archae Bacteria - Same as normal, except they live in crazy enviorments, like at the bottom of the ocean or in a volcano or radiation pool
Protozoa - Single celled organism class, like ameoba
Answer:
If this was edmentum. this was my question and answer
Explanation:
see pic below
Define and compare four level of protein organization.
Explanation:
There are four levels of protein structure: primary, secondary, tertiary, and quaternary. These levels also reflect their temporal sequence. Proteins are synthesized as a primary sequence and then fold into secondary → tertiary → and quaternary structures.
The discovery of RNA interference (RNAi) led to its use in biotechnology and medicine. All of the following are examples of how RNAi could be used in biotechnology or medicine, EXCEPT ________.
a. to treat a disease characterized by a gene that is not expressed.
b. to study loss-of-function phenotypes of specific genes in a model research organism.
c. to treat a disease characterized by the buildup of a specific protein.
d. to treat a disease characterized by the overexpression of a nonmutated gene.
e. to treat a disease characterized by the normal expression of a mutated gene
Answer:
a. to treat a disease characterized by a gene that is not expressed.
Explanation:
The RNA interference (RNAi) technique is widely used in molecular biology to inhibit target gene expression at the post-transcriptional level. The RNAi technology uses small interfering RNAs (siRNAs) consisting of 18-22 nucleotides that bind to complementary acid nucleics (i.e., DNA and RNA), thereby inhibiting target gene expression. Recently, it has interestingly been discovered that small RNA sequences targeting promoter regions can also be used to activate the expression of endogenous target genes through a mechanism called RNA activation (RNAa).
Which of the following is the measure of the
chair's mass, or the amount of particles it has?
A. the length of a chair
B. the temperature of the chair
C. the color of the chair
D. the amount of matter in the chair
Estrogens from the vesicular follicle trigger an LH surge from the anterior pituitary. This is an example of: Estrogens from the vesicular follicle trigger an LH surge from the anterior pituitary. This is an example of: negative feedback first tier of control positive feedback fourth tier of control
Answer:
The correct answer is: positive feedback.
Explanation:
Positive and negative feedback are terms that are used to define the way a system is regulated by its products. For example, when the production of a certain substance inhibits its producer that is called negative feedback. On the other hand, when a substance stimulates its producer to keep secreting said substance, this is called positive feedback.
Estrogen is a hormone of great importance in the female reproductive cycle and is secreted by the follicle cells in response to the presence of FSH (follicle-stimulating hormone), released by the anterior pituitary when stimulated by the GnRH (gonadotropin-releasing hormone).
Estrogen appears at the beginning of the cycle to stimulate the development of the ovarian follicles, and the hormone levels continue to rise as the cycle advances. Up until the 14th day of the cycle, estrogen has a negative feedback on GnRH and FSH, but then it makes an abrupt change to now exert positive feedback on GnRH to stimulate the release of LH (luteinizing hormone), which will be responsible for ovulation.