Which grouping(s) in an amino acid allows for hydrogen bonding to occur among amino acids?
N-H
C-N
C-H
C-0
0-H
Answers
Answer: 291
Explanation:
because i know
Answer:
C N i was having the same question in the high school and that's correct
Related Questions
a helium atom contains 2 protons, 2 electrons, and 2 neutrons. Which would be considered an Isotope of heliuma. an atom with 2 protons , 1 electron and 2 neutronsb.all of thesec. an atom with 2 protons 2 electrons 1 neutron d. an atom with 1 proton 2 electrons 2 neutrons
Answers
Isotopes are different forms from the same element, they have the same number of protons but differ in the number of neutrons in their nuclei, this makes them have different atomic mass, altough their chemical properties remain the same.
Helium contains 2 protons, 2 electrons, and 2 neutrons.
Of the listed options, only c. has a different number of neutrons than the described atom. So this option represents an Isotope of Helium.
Island Distance From Mainland (kilometers) Area (hectares)
A 50 1 x 102
B 50 1 x 106
C 500 1 x 102
D 1000 1 x 102
E 1000 1 x 106
Five islands, A, B, C, D, and E, differ only in distance from the mainland, area, and species diversity. Which island would be predicted to have the highest species diversity ?O AO BO CO DO E
Answers
Island B is the most likely to have the highest species diversity out of the five islands. The larger area and closer proximity to the mainland provide more opportunities for species to survive and thrive on island B.
This increases the potential for a greater diversity of species, making island B the best candidate for the island with the highest species diversity.The island with the highest species diversity will likely be island B due to its larger area and relatively close distance from the mainland.
Island B is located 50 kilometers from the mainland, while islands A, C, D, and E are located at 50, 500, 1000, and 1000 kilometers away, respectively. Furthermore, island B is 1 x 106 hectares in size, much larger than Islands A, C, and D, which are 1 x 102 hectares in size.
The larger area of island B provides more habitat for species to survive and thrive, while the closer distance from the mainland increases the chances of species dispersing to the island. As species are able to move more freely and find suitable habitat in island B, island B is likely to have a higher species diversity in comparison to Islands A, C, D, and E.
Habitat fragmentation can also impact species diversity, and the distance from the mainland may further influence species diversity by reducing the exchange of individuals between mainland and the island. Thus, island B has the highest potential for species diversity due to its larger area and closer distance from the mainland.
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What is a group of organs that work together to accomplish a task? (two words)
Answers
Answer:
Organ System
Explanation:
The group of organs that work together to accomplish a task is called the organ system.
Answer:
An Organ System
Explanation:
Organ systems are important for maintaining the overall health and functioning of the body.
Some examples of Organ Systems include:
1) The circulatory system is made up of the heart, blood, and blood vessels (veins and arteries). In charge of the circulation of oxygen and nutrients, as well as the elimination of waste products.
2) The digestive system, which includes the mouth, oesophagus, stomach, small and large intestines, liver, pancreas, and rectum, is in charge of breaking down food and absorbing nutrients.
3) Consisting of the brain, spinal cord, and nerves, the nervous system is in charge of directing and coordinating body operations.
Each organ system relies on the other to function properly, and any disruption in one system can affect the functioning of others. Thus, the proper functioning of each organ system is crucial for wellbeing.
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2.
Which of the following examples is a non-renewable source of energy?
wood
nuclear power
hydroelectric
wind
Answers
Answer Wood
Explanation: there will always be trees but the will not be wind at all times, nuclear energy was invented, man made so it can run out. I could be wrong. Pls don’t hate if I am.
Which of the following best describes the "social sciences"?
Sciences that focus on researchers conducting objective studies
Sciences that are able to objectively measure human behavior
Sciences that focus on human behavior and society
Sciences that objectively measure natural phenomena
Answers
Answer:
c. Sciences that focus on human behavior and society
Explanation:
most logical answer
MULTIPLE ALLELES INHERITANCE-BLOOD TYPES
Is it possible for a mom who is IaIa and a Dad who is IbIb have a child who is type B ?
Answers
Answer:
No
Explanation:
A person having blood type B has either of the two genotypes
IbIb
OR
OIb
O represents the blood group B
The genotype of two parents is IaIa and IbIb
Gametes of IaIa are Ia, Ia
Gametes of IbIb are Ib, Ib
IaIa * IbIb
IaIb, IaIb, IaIb, IaIb
All the offspring have genotype AB
Hence two homozygous parents for Blood type A and B will not have any offspring with blood type B
How does the extinction of species affect humans?
A. Extinction generates new sources of medicine.
B. Extinction upsets the natural cycling of nutrients,
C. Extinction helps keep air and water clean.
D. Extinction makes the environment more pleasant.
Answers
Answer:
B. Extinction upsets the natural cycling of nutrients
The extinction of species affect humans as extinction upsets the natural cycling of nutrients. Therefore, option (B) is correct.
What do you mean by extinction of species?Extinction is the end of a sort of life form or of a gathering of sorts, normally an animal categories. The snapshot of annihilation is for the most part viewed as the passing of the last person of the species, albeit the ability to raise and recuperate.
As species go terminated, they are removed from the established pecking order. The animals that ate the species that has gone extinct must find new food or die. Other animal or plant populations could suffer as a result.
Habitat loss and degradation (primarily deforestation), overexploitation (hunting and overfishing), invasive species, climate change, and nitrogen pollution are the main modern causes of extinction.
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Sugar is a type of carbohydrate.
(i) Eating too much sugar can make a person overweight.
Suggest why.
Answers
Answer:
Explanation:
--> Excess sugar may cause you to pack on weight because it's high in calories while offering few other nutrients.
: )
In a variety of ways, a high-sugar diet can cause weight gain. It's high in empty calories that have no nutritional value, causing your body to store fat and tricking your brain into wanting more.
5. What do porifera use their flagella for?
(1 Point)
O swimming
O eating
reproducing
Answers
Answer:
Porifera use their flagella to eating.
Explanation:
Porifera are immobile animals, typical of marine ecosystems, also called sea sponges and characterized by a lack of true tissue.
Coanocytes are one of the main cells of the porifers, and they are endowed with flagella that allow them to mobilize the water with food particles towards the microvilli, structures that trap them to be later absorbed.
The flagella play an important role in the feeding of the porifers, by conducting the food to the structures responsible for its absorption and processing.
The other options are not correct:
Porifera is immobile, so the flagella do not participate in swimming.Flagella do not participate in the reproductive process of marine sponges.Cellular respiration and photosynthesis are similar in that both produce.
A. oxygen molecules
B. carbon dioxide molecules
C. NADP molecules
D. ATP molecules
Answers
Cellular respiration and photosynthesis are similar in that both produce ATP molecules, which are the main energy source for cells.
What is Cellular respiration?Cellular respiration is the biochemical process of converting the chemical energy stored in food molecules into ATP molecules, which are the energy currency of cells. This process occurs in the mitochondria of cells and is a vital part of the energy cycle that maintains homeostasis and drives the metabolic activities of cells. During cellular respiration, oxygen is consumed and carbon dioxide is released as a by-product. The process involves the breakdown of food molecules, such as glucose, into smaller molecules, such as pyruvate, and the subsequent transfer of electrons from these molecules to electron acceptors, such as oxygen, to create ATP.
ATP stands for adenosine triphosphate, and it is a molecule that stores and transports energy within cells. Photosynthesis produces ATP by converting energy from light into a form of chemical energy, while cellular respiration produces ATP by breaking down glucose molecules.
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Question 2:
What patterns do you observe in Wing Length from 1973 to 1978?
Answers
Answer:
one possible pattern that can be observed in wing length from 1973 to 1978 is that both shorter- and longer-winged finches decreased in number. Another possible pattern is that there are two distinct groups of birds with small and large wing lengths in both years. A third possible pattern is that some birds had longer wing lengths (up to 75 mm) in 1978 than in 1973 (up to 70 mm).
Explanation:
Which of the following is NOT present in all cells?
ribosomes
mitochondria
cell membrane
Answers
allele that is only expressed if a dominant allele is not present
Answers
Answer:
a recessive allele
Explanation:
a recessive allele is only expressed if a dominant allele is not present.
Hope this helps.
what is the reproductive organ of ferns
A. Cone
B. Stem
C. Fronds
D. Flowers
Answers
Answer:
Stems are the reproduction organ of ferns I think.
• How did your original thoughts about biomes compare with data collected
during your investigation?
Answers
On the planet, areas with similar latitudes tend to have similar climates and, consequently, similar biomes. However, topography also has an impact on climate, which can affect the characteristics of different biomes in areas with the same latitude.
A region is defined by its major vegetation type as a result of its climate and terrain to form a biome. The biome and broad vegetation characteristics of a location can be predicted using temperature and rainfall patterns within that area.The variety of species present in the terrestrial and oceanic ecosystems of the planet is known as biodiversity. An ecosystem's health is frequently evaluated based on how diverse it is.A biome's inhabitants have developed adaptations that enable them to live and breed there.The vegetation and organisms that have adapted to a biome can be impacted by natural disturbances like fire, storms, and illness.The biodiversity within a biome can be influenced by the interactions between living and nonliving variables in an ecosystem, such as symbiotic connections, competition, climate, topography, natural events, and human impact.
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which of the following statements is true regarding dermatomes? multiple choice dermatomes are only found in the thoracic and lumbar areas of the spinal cord. each dermatome provides sensory input from a broad area of the skin (e.g. the entire upper limb) to a specific spinal nerve. dermatomes are very precise representations of the cutaneous regions that are innervated by each spinal nerve. dermatomes are not used to assess spinal nerve damage. dermatomes overlap at their edges by as much as 50%.
Answers
Answer: The answer is a
Explanation: Each dermatome provides sensory input from a broad area of the skin (e.g. the entire upper limb) to a specific spinal nerve.
Answer:
A
Explanation:
Shnsnsns I really need help
Answers
Answer:
I answered this....check for the other question u posted it has the answer:)
changes in gene regulation that are caused by modifications to histones and the dna, but not the nucleotide sequence itself, are known as ________.
Answers
Changes in gene regulation that are caused by modifications to histones and the DNA but not the nucleotide sequence itself are known as epigenetic changes.
What are histones?Histones are proteins that DNA coils around, allowing it to be packaged into a compact structure known as chromatin. They are involved in regulating gene expression and chromosomal stability.Histone modifications include acetylation, methylation, and phosphorylation, among others, and they play a vital role in determining chromatin structure and regulating gene expression.
Epigenetic changes can be influenced by environmental factors, such as diet and stress, and can be passed down from one generation to the next. Epigenetic modifications can result in changes in gene expression and may contribute to the development of certain diseases, including cancer.
Scientists are currently researching ways to use epigenetic modifications to develop new therapies for cancer and other diseases. In summary, epigenetic changes are changes in gene regulation that are caused by modifications to histones and the DNA but not the nucleotide sequence itself.
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There are 2 alleles for the crest characteristic in pigeons:no crest and crest.Crest is recessive.Use a Punnett square to calculate the probability of the offspring of 2 heterozygous parents.
Answers
For heterozygous parents, the genotype is Cc. When both parents are crossed, then 1 will be CC, 2 will be Cc and 1 will be cc. out of four offspring, 3 have no crest, and the rest have a crest (cc).
In the Punnett square, the letters "C" and "c" represent the two alleles for the crest characteristic in pigeons. The uppercase "C" represents the dominant allele for no crest, while the lowercase "c" represents the recessive allele for crest. Each parent is heterozygous, which means they carry one copy of the dominant allele (C) and one copy of the recessive allele (c). When the two parents are crossed, each parent can pass on either the dominant or the recessive allele to their offspring.
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Deanna wanted to test the idea that eating carrots improves a person's ability to see at night. She
asked ten people to eat one carrot a day for a month, and asked ten other people to eat no carrots
for a month. She then tested their night vision.
Who is the experimental group in this experiment?
a. Deanna.
b. There was no experimental group.
C. The ten people who ate carrots.
d. The ten people who did not eat carrots.
Answers
Answer: The ten who ate carrots, I believe.
Explanation: Hope this helps!
Which of the following best supports the endosymbiont theory that present-day eukaryotic cells are descendants of a successful symbiotic relationship between a host cell and an engulfed prokaryote?
A. Chloroplasts and mitochondria replicate in a similar manner as some prokaryotes.
B. Chloroplasts are necessary for photosynthesis reactions in plant and bacteria cells.
C. Mitochondria and chloroplasts are able to produce ATP molecules to be used by the cell.
D. Mitochondria use proteins and nutrients produced in other regions of the eukaryotic cell.
Answers
Answer:
A. Chloroplasts and mitochondria replicate in a similar manner as some prokaryotes
Explanation:
Endosymbiont theory deals with how eukaryotic organisms were formed from prokaryotic organisms. Prokaryotes such as Bacteria were documented as the first form of life on earth through fossil records before eukaryotes came into light.
Organelles such as Chloroplasts and mitochondria replicate in a similar manner as some prokaryotes. This supports the endosymbiont theory that present-day eukaryotic cells are descendants of a successful symbiotic relationship between a host cell and an engulfed prokaryote
It is commonly believed that the mean body temperature of a healthy adult is 98.6∘F. You are not entirely convinced. You believe that it is not 98.6∘F. You collected data using 54 healthy people and found that they had a mean body temperature of 98.26∘F with a standard deviation of 1.16∘F. Use a 0.05 significance level to test the claim that the mean body temperature of a healthy adult is not 98.6∘F. a) Identify the null and alternative hypotheses? H0: ?
H1: ? b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? i. left-tailed ii. right-tailed
iii. two-tailed c) Identify the appropriate significance level. d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places. e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places. f) Do you reject the null hypothesis? 1. We reject the null hypothesis, since the p-value is less than the significance level.
2. We reject the null hypothesis, since the p-value is not less than the significance level. 3. We fail to reject the null hypothesis, since the p-value is less than the significance level. 4. We fail to reject the null hypothesis, since the p-value is not less than the significance level. g) Select the statement below that best represents the conclusion that can be made. 1. There is sufficient evidence to warrant rejection of the claim that the mean body temperature of a healthy adult is not 98.6∘F. 2. There is not sufficient evidence to warrant rejection of the claim that the mean body temperature of a healthy adult is not 98.6∘F. 3. The sample data support the claim that the mean body temperature of a healthy adult is not 98.6∘F.
4. There is not sufficient sample evidence to support the claim that the mean body temperature of a healthy adult is not 98.6∘F.
Answers
The conclusion of the hypothesis test regarding the mean body temperature of a healthy adult is sufficient evidence to warrant rejection of the claim that the mean body temperature of a healthy adult is not 98.6∘F.
What is the conclusion of the hypothesis test regarding the mean body temperature of a healthy adult?a) Null Hypothesis (H0): The mean body temperature of a healthy adult is 98.6∘F.
Alternative Hypothesis (H1): The mean body temperature of a healthy adult is not 98.6∘F.
b) The hypothesis test should be two-tailed.
c) The appropriate significance level is 0.05.
d) The test statistic is calculated using the formula: (sample mean - hypothesized mean) / (sample standard deviation / sqrt(sample size)). The result is -5.86.
e) The p-value is calculated by finding the probability of obtaining a test statistic as extreme or more extreme than the observed value under the null hypothesis. The p-value is 0.0000.
f) We reject the null hypothesis, since the p-value is less than the significance level.
g) The phrase "There is sufficient evidence to warrant rejection of the claim that the mean body temperature of a healthy adult is not 98.6F" best summarises the finding.
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Which is a feature of a cladogram?
A The characteristics must be shared among the organisms.
B The characteristics must be different among the organisms.
C It must contain at least three different shared characteristics.
D It must contain at least three different groups of organisms.
Answers
Answer:
C
Explanation:
Human sperm and egg cells have ____ chromosomes.
A. 42
B. 21
C. 23
Answers
Answer:
They each have 23 chromosomes
Explanation:
Answer:
C. 23
Explanation:
Human sperm and egg cells have 23 chromosomes.
HELPPPPPPPPPPPPP #17
Answers
Answer:
i would say i might be A
Explanation:
very sorry if im wrong
Give an example of a common “parent-daughter” combination.
the passages is downs below
A common "parent-daughter" combination that geologists use is radioactive uranium and non-radioactive lead. As shown in the diagram above, uranium is trapped in a newly formed rock. As the rock ages, more and more of the uranium changes into lead.
The age of the rock in years can be found by measuring the rate at which a parent element decays and then measuring the ratio of parent element to daughter element in the rock. The ages in years of the different geological time periods are found by measuring the absolute ages of many rocks from all of the different periods. The absolute ages of some of the different geologic time periods are shown along the right side of the Staircase of Time.
The steps of the Staircase of Time are drawn to be almost the same size, so you might think that the time periods are the same length, but they are not. The absolute ages of rocks taken from the different time periods have shown that the time periods were of greatly differing lengths. Some were very short, like the Quaternary period (only 2 million years), while others were very long, like the Proterozoic Era (almost 2 billion years). According to absolute-age measurements, an accurate representation of the lengths of the major geologic time periods is shown in the time bar at right.
link: http://www.cotf.edu/ete/modules/msese/earthsysflr/ages.html
Answers
A common "parent-daughter" combination that geologists use is radioactive uranium and non-radioactive lead.
What is the "parent-daughter" combination about?The passage that is provided above is discussing a method used by geologists to determine the age of rocks. The method is based on the principle of radioactive decay, which is the process by which an unstable, or radioactive, element changes over time into a stable, or non-radioactive, element.
A common "parent-daughter" combination used by geologists is radioactive uranium (parent element) and non-radioactive lead (daughter element).
Therefore, the passage further explains that the age of different geological time periods can also be found by measuring the absolute ages of many rocks from all of the different periods.
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DNA is in what form during interphase?
Answers
Answer:
During interphase (1), chromatin is in its least condensed state and appears loosely distributed throughout the nucleus. Chromatin condensation begins during prophase (2) and chromosomes become visible. Chromosomes remain condensed throughout the various stages of mitosis (2-5).
DNA is in form during interphase During interphase, the cell DNA isn't condensed and is loosely distributed.
What happens during interphase?A stain for heterochromatin (which shows the placement of chromosomes) indicates this large distribution of chromatin. The equal stain additionally indicates the organized, aligned shape of the chromosomes in the course of mitosis.
Nuclear DNA remains in a semi-condensed chromatin structure throughout the interphase. During the S phase, DNA replication results in the creation of identical pairs of DNA molecules, known as sister chromatids, which are tightly linked to the centromeric region.
During the S phase, the centrosome is duplicated.
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What forms when volcanic rocks get eroded
Answers
Answer:
igneous rocks
Explanation:
Extrusive, or volcanic, igneous rocks are formed when molten hot material cools and solidifies. There are three main types of rocks: sedimentary, igneous, and metamorphic. Each of these rocks are formed by physical changes—such as melting, cooling, eroding, compacting, or deforming—that are part of the rock cycle
Answer:
black sand
Explanation:
black sand comes from erodes volcanic material
Desirae touched a plate and it was hot. Which part of her nervous system conveyed this sensory information?
Answers
Central part of the nervous system convey the sensory information to thee brain. It is one of 2 parts of nervous system. Sensory nervous system is a pert of nervous system which is responsible for the processing sensory information .
It consist of sensory neurons which includes the sensory receptor cells, neural pathways and parts of the brain involved in sensory perception. It transmitted the signal to nervous system which includes brains and spinal cord.
When nervous system detects and encodes stimuli and then sends signals from receptors that is simple sensory nervous endings. While the high temperature is sensed in the skin , a reflective withdrawal is initiated by the muscles of the arm.
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The textbook cites research on domestic violence that uses animal stereotypes to label two types of batters as either "Pit Bulls" or "Cobras" (Jacobson and Gottman, 1998). Which of these two seeks to take advantage of others and is easily identified as a threat?
A. Pit Bulls
B. Cobras
C. Neither
D. Both
Answers
The research by Jacobson and Gottman (1998) found that "Pit Bulls" were more likely to use physical violence to establish dominance and control over their partners, while "Cobras" were more likely to use intimidation and emotional abuse to achieve the same goals. Option B. Cobras is correct because:
"Cobras" were seen as more dangerous because their tactics were often subtle and harder to identify. However, it is important to note that these animal stereotypes are not accurate or helpful in understanding the complex dynamics of domestic violence and should not be used to label or judge individuals. Pit Bulls, in this context, are those who seek to take advantage of others and are easily identified as a threat, while Cobras are more covert and manipulative.
In summary, B.Cobras are identified as a threat.
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