creation of an unnatrually uniform sample to representt a diverse population can be avoided by
selecting individuals at random.
In response to electrical stimulation of a particular brain region, a rat shows increased blood pressure and heart rate, dilation of the pupils, erection of the hair on the back, arching of the back, and biting at the air. Which region could the electrode be stimulating
Answer:
The brain stem is responsible for increased blood pressure, HR etc,
Explanation:
It is made up of the mid brain, the Pons, and the Medulla.
While the Pons serve as the neurological bridge between the brain regions e.g the cerebrum and cerebellum to conduct and control certain responses the Medulla controls involuntary activities.Thus the involuntary activities listed above are controlled by the medulla.
Thus the activities of the rats which involves the dilation of pupils, erection of hair, are controlled in the pons. While increases blood pressure and the H.R are under the medulla.
Which element is found in nucleic acids but not in amino acids
Answer:
Phosphorus
Explanation:
idk amino acids contain carbon hydrogen oxygen and nitrogen as well as sulfur sometimes
nucleic acids contain phosphorus as well as carbon hydrogen and nitrogen
Answer:
Phosphorus
Explanation:
I took the quiz.
1. The length of a dog's tail is an inherited trait. The allele for short tails is dominant (T) over the
allele for long tails (t). A dog breeder mates two short-tailed dogs (parents). One parent is
homozygous and the other is heterozygous for this trait (10 points).
a. Complete the Punnett square for the genetic cross described above:
Answer/Explanation:
Given==> short tail allele (T) is dominant, and long tail allele (t) is recessive.
Genotype of homozygous short-tailed dog = TT, while genotype of heterozygous short-tailed dog = TT
Required==> Punnett Square showing a genetic cross between both parents: i.e. TT X Tt
*See attached image for the Punnett Square
From the Punnett Square, 50% of the offspring of the First generation would be homozygous short-tailed, while 50% would be heterozygous short-tailed.
All the offspring would be all short-tailed as well.
The oxidation of glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate is an endergonic reaction, but the flow through this point in glycolysis proceeds smoothly. Part A How is the unfavorable equilibrium constant overcome
Answer:
This inbalance is constantly overcome by the production of excess product (1,3-bisphosphoglycerate) which triggers the reversible reaction through the action of the enzyme called glyceraldehyde 3-phosphate dehydrogenase in the process called gluconeogenesis .
Explanation:
A cofactor (NAD+) and a phosphate molecule are crucial to this reaction to produce NADH which results in ATP a high energy molecule. an OH ion is removed from the glyceraldehyde-3-phosphate molecule and transferred to the NAD to form NADH molecule and an intermediate (thioester). The Phosphate molecule then binds to the thioester to form 1,3-bisphosphoglycerate
what biomes are found in south africa
During a marathon, runners draw heavily on their internal reserves of glycogen (carbohydrate) and triglycerides (fat) to fuel muscle contraction. Initially, energy is derived mostly from carbohydrates, with increasing amounts of fat being used as the race progresses. If runners use up their muscle glycogen reserves before they finish the race, they hit what is known as "the wall.," a point of diminished performance that arises because fatty acids from triglyceride breakdown cannot be delivered to the muscles quickly enough to sustain maximum effort. One trick that marathon runners use to avoid the wall is to drink a cup of strong black coffee an hour or so before the race begins. Coffee contains caffeine, which is an inhibitor of cyclic AMP phosphodiesterase. How do you suppose inhibition of this enzyme helps them avoid the wall
Answer:
The activity of cyclic AMP phosphodiesterase is prevented by caffeine. The caffeine prevents further dissociation of cAMP, which eventually increases the response within the body. The activity of neurotransmitters, that is, of noradrenaline or epinephrine, gets increased due to enhancement in response.
This further enhances the activity of the heart, the rate of muscle contractions, blood pressure that further helps in delivering more oxygen to the brain, and other parts of the body. Thus, the inhibition of the enzyme cyclic AMP phosphodiesterase helps the athletes to prevent the wall.
5. Does a woman have periods while she is pregnant?
Answer:
No
Explanation:
A period is when your body produces a layer of tissue and blood to protect the baby. But the period is when your body is like "oops, false alarm" and disposes of the tissue and blood. During pregnancy, the baby is kept safe by the tissue and blood, that is why women don't have periods during pregnancy.
John and Jane Jones’ newborn baby girl, Leah, has just been diagnosed with galactosemia. Prior to their genetic counseling appointment, they submitted this family history: John and Jane’s older child, a son named Lee, does not have galactosemia. John is the only child of Hanna and Harry. Harry was an only child. Hanna has two older sisters, Hope (the oldest) and Holly. Both Harry and Hanna’s parents lived in good health into their 80s. Jane’s brother, Joe, is married to Jen. They have a son, Les, who is a
Answer: They have a son , Les who is 9 years old and healthy with myopia but not galactosemia. Les is unaffected with galactosemia.
Explanation:
From the family story, Leah is the only child affected with galactosemia while Les is unaffected and healthy.
Hanna's father and mother have three daughters and they are Hope, Holly and Banana( from oldest to youngest).
Hanan and Harry have an only son called John.
John married Jane and they have two children, Leah and Les.
Leah is girl that is affected with galactosemia and Les who is a boy and he is unaffected with galactosemia.
Jane's mother is Hilda and she has a brother called Joe. Joe married Jen and they have a son called Les.
Choose the statements that accurately describe the
feeding relationships in this food web Check all that
apply
The ofter is a secondary consumer
The frog is a secondary consumer
The algae are producers
The flies are primary consumers,
The snails are primary consumers.
The heron is a secondary consumer
Answer:
The algae are producers.
The snails are primary consumers.
Herons is a secondary consumer.
Explanation:
Food web is the interconnection of different food chains in the ecosystem and it represent the different feeding relationships between organism in the ecosystem.
From the question,
Algae is a primary producer because it has the ability to produce food.
Algae have chlorophyii, a green pigment which trap light energy from the sun and uses carbondioxide and water to produce food which other organism depend on.
Snail is a primary consumer because it's depend on algae for food. Snails feed on algae because they cannot produce their own food.
Heron is a secondary consumer because it feed on snails. They feed directly in snails to obtain their energy requirement for survival.
Answer:
The frog is a secondary consumer
the algae are producers
the files are primary consumers
the snails are primary consumers
Explanation:
trust me im right did the test got it right the person above is wrong
Seen more clearly in small populations, _______ is when allele frequencies change due to random chance, not selection.
Answer:
Genetic drift
Explanation:
Genetic drift are changes that occur in the frequency of alleles in a population that are mainly due to chance. For genetic drift to occur, this change must occur randomly, and examples is usually seen mostly in small populations.
Analyze how different concentrations of solutes in a solution can affect organisms cells
Answer:
Well I think that at first it would make it go bad and then it would just end up killing then and harming the organism cells
Explanation:
Hopefully I am right
Noble gases have a full outer energy level and are in active these Atoms are considered
Explanation:
Noble gases have a full outer energy level and are inactive. These atoms are considered inert.
Hope this helps
Good Luck
Energy is released from atp when
Answer:
When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP). Likewise, energy is also released when a phosphate is removed from ADP to form adenosine monophosphate (AMP).
Explanation:
Answer:
When one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and ATP is converted to adenosine diphosphate (ADP).
is it a good idea to sterilized things from bacteria before going to moon?
Answer:
I would say yes
Explanation:
Due to the growing fear over coronavirus sterilizing equipment would help stop the fear of coronavirus potentially having the ability to survive and grow in space
how lysosomes may be involved in the removal of the interdigital membrane of the developing mammalian fetus.
Answer:
Lysosomes are organelles that contain hydrolytic enzymes (lysozymes) which are required for membrane degradation, thereby they may be important during the removal of the interdigital membrane.
Explanation:
Lysosome plays a critical function by digesting cellular components such as, in this case, the interdigital membrane. During mammal embryo development, the interdigital membrane is reabsorbed, it is a structure between the digits that appeared during evolution in aquatic animals. However, in terrestrial mammals, it is a vestigial structure leftover from their ancestors.
Select the correct answer.
The image shows a process called vegetative reproduction, in which a new plant grows from a part of another plant. Which statement is true about the offspring formed by this process?

It’s genetically identical to its parent.
It forms through sexual reproduction.
It can’t develop genetic mutations.
It has exactly half the amount of genetic information as its parent.
Answer:
Its genetically identical to its parent
Explanation: Vegetative reproduction occurs asexually and involves only one parent. The offspring of vegetative reproduction is genetically identical to its parent.
Answer:
It’s genetically identical to its parent.
Explanation:
Took it on Plato/ Edmentum (:
_________5. In which of the following activity does C4 plants are more efficient than C3 plants?
A. Fixation of CO2 C. Photolysis
B. Chemiosmosis D. Light absorption
i think its A.fixation of CO2
The transfer of energy that occurs when molecules bump into one another is called ____.
a.
radiation
c.
convection
b.
conduction
d.
condensation
Please select the best answer from the choices provided
Answer:
The answer is conduction.
Explanation:
What is needed in order for plants to take up nutrients from the soil?
Answer:
Plants take up essential elements from the soil through their roots and from the air (mainly consisting of nitrogen and oxygen) through their leaves. Nutrient uptake in the soil is achieved by cation exchange, wherein root hairs pump hydrogen ions (H+) into the soil through proton pumps.
HOPE IT HELPS
Explanation:
Please I need help with this question ASAP:
Q: Explain Carbohydrate metabolism in fed state, importance and problems in human body. Support your answer by biochemical pathways.
Answer:
Explanation:
After having a carbohydrate rich meal concentration of some hormones, especially insulin change in your body. Insulin promotes the uptake of glucose by cells(particularly muscle cells, adipocytes, liver cells). It also increases the rate of glycolysis and glycogenesis and decreases the rate of gluconeogenesis and glycogenolysis.
These important metabolic pathways cause burning up glucose to make ATP that all cells in our body need and also storing it in the form of glycogen in the liver which is a very important food storage. Metabolism of carbohydrates also causes fat to be deposited in adipocytes which is basically why we have stuff like keto diets(no or very little carbohydrates and mainly fats consumed) for losing weight!
if Tyler does not eat a diet that includes essential amino acids his cells will not be able to build
Answer:
Protein is an essential ingredient of every cell in the body. Hair and nails are often made of protein. Your body uses protein to strengthen and repair muscles. You also use protein to make catalysts, hormones, and other body chemicals. Protein is an essential building mass of bones, muscles, cartilage, skin, and blood.
Pls mark me brainliest
Answer:
Proteins
Explanation:
Amino acids are the building blocks, or the monomers of proteins. There are 20 types of amino acids that build protein in our bodies. If Tyler’s diet does not include amino acids, then his body and his cells cannot make proteins.
This is not good for his body, because protein is very important. Protein is part of many different body parts. It is also used for growth and repair. Additionally, protein is used in the creation of enzymes and hormones.
Therefore, the answer is protein. If Tyler’s diet lacks amino acids, he cannot make proteins.
What is the single biggest challenge for living organisms in caves
Clean coal, though expensive, creates virtually no environmental impact.
True
False
Answer: False
happy to help
RNA contains the nitrogen base Uracil instead of thymine.
True or false?
Answer:
True
Explanation:
Uracil does in fact replace thymine in the RNA chain meaning that the pairings are now adenine-> uracil and cytosine -> guanine
Which tool did Maurice Wilkins use when studying DNA?
Answer:
Microscopes, spectrophotometers, X-ray crystallography (more info below )
Explanation:
Wilkins studied biological molecules like DNA and viruses using a variety of microscopes, spectrophotometers and X-ray crystallography.
hope I helped!
Answer:
B. X-Ray for you on Edgen uity
Explanation:
Did the Quiz
Joe is trying to find out how solar energy can replace the functioning of certain individual needs. With this research, which phenomenon is Joe trying to curb?
a. Global warming
b. Acid rain
c. Increase in sea levels
Answer:
a. Global warming
Explanation:
Solar energy is the form energy which uses the SUN as Its source. It is a renewable source of energy. Humans, through our activities, contribute to the gradual increase of the earth's atmospheric temperature, called GLOBAL WARMING. We contribute to this phenomenon posing threat to the environment's sustainability when trying to fulfil our day-to-day individual needs.
One of those activities is the burning of fossil fuels via cars, in industries, domestic households etc. The burning of fossil fuels results in the release of heat-trapping gases called Greenhouse gases e.g CO2, CFC etc. These gases are the major cause of Global warming.
Hence, Joe is trying to work on how solar energy can replace the use of other sources of energy that release these greenhouse gases into the atmosphere in order to curb GLOBAL WARMING.
N.B: Solar energy does not emit greenhouse emissions. It is the best and safest source of energy.
protective tissues includes _____and_____.
Answer:
Explanation:
It includes epidermis and cork. Epidermis : It is usually present in the outermost layer of the plant body such as leaves, flowers, stem and roots. Epidermis is one cell thick and is covered with cuticle. Cuticle is a water proof layer of a waxy substance
How many animo acids must be obtained in the diet because they cannot be made the body?
Answer:
Essential amino acids cannot be made by the body. As a result, they must come from food. The 9 essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
Explanation:
(hope that helped)
how are genes and protiens related
Answer:
Most genes contain the information needed to make functional molecules called proteins. (A few genes produce other molecules that help the cell assemble proteins.) The journey from gene to protein is complex and tightly controlled within each cell.
Explanation:
Most genes contain the information needed to make functional molecules called proteins. (A few genes produce other molecules that help the cell assemble proteins.) The journey from gene to protein is complex and tightly controlled within each cell.
