Answer:
ANswer My question I will answer ur]
Directions: Select the appropriate comparing symbol from the dropdown list below to evaluate each pair of numbers
.998 _____ .9899 *
.
Explanation:
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Which of the two processes, photosynthesis or cellular respiration, is exergonic or endergonic?
What is the autotroph and herotroph for photosynthesis
Why is soil important and how do we protect it
Answer:
Soil provides plants with foothold for their roots and holds the necessary nutrients for plants to grow; it filters the rainwater and regulates the discharge of excess rainwater, preventing flooding; it is capable of storing large amounts of organic carbon; it buffers against pollutants, thus protecting groundwater ...
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the process that uses carbon dioxide but not light energy to make sugars is called _____.  a. hydrolysis  b. chemosynthesis  c. digestion  d. respiration
Answer:
D. respiration
Explanation:
It is basically a process that takes place in the cells of organisms. It converts chemical energy from oxygen molecules or even nutrients into ATP.
Hope this helped!
Answer:
b
Explanation:
I think I'm not sure I tried to reaserch
Only ___________ cells can be viewed under an electron microscope because of the radiation it sends out.
An electron microscope provides clearer, more detailed images than light microscopes.
Organellesthat can be viewed under electron microscope are ribosomes, vacuoles, Golgi body, rough endoplasmic reticulum, smooth endoplasmic reticulum, mitochondria, nuclear membrane, nuclear pores, nucleolus.
what is DNA fingerprinting
Answer: DNA fingerprinting is a method used to identify an individual from a sample of DNA by looking at unique patterns in their DNA
Explanation:
Answer:
DNA fingerprinting is a laboratory technique used to establish a link between biological evidence and a suspect in a criminal investigation.
Explanation:
A DNA sample taken from a crime scene is compared with a DNA sample from a suspect. If the two DNA profiles are a match, then the evidence came from that suspect. Conversely, if the two DNA profiles do not match, then the evidence cannot have come from the suspect. DNA fingerprinting is also used to establish paternity.
1. The histogram below shows the total estimated new breast cancer cases diagnosed in 2003.
Histogram
2. The results in this table below are from a 2007 study investigating BRCA mutations in women diagnosed with breast cancer. All of the women in the study had a family history of breast cancer.
BRCA Mutations in Women Diagnosed with Breast Cancer
BRCA1 mutation
BRCA2 mutation
No BRCA mutation
Total
Number of patients
89
35
318
442
Average age at diagnosis
43.9
46.2
50.4
Preventive mastectomy*
6
3
14
23
Preventive oophorectomy*
38
7
22
67
Number of deaths
16
1
21
38
Percent died
18
2.8
6.9
8.6
*A mastectomy is the surgical removal of one or both breasts, either partially or fully. An oophorectomy is the surgical removal of an ovary or ovaries.
Things to address in your summary essay:
Describe how mutations lead to genetic variations.
Which appears to be more dangerous: the BRC1 or BRC2 mutation?
Analyze a woman’s risk of dying of cancer if she carries a mutated BRC1 gene.
How do heredity and inheritance relate to the data presented in these charts?
What data would you need to see in order to draw conclusions about the effectiveness of preventive surgeries?
What does the age at diagnosis tell you about the mutation?
Explain how breast-cancer genes are still present in the population, despite cancer-related surgeries and deaths.
Answer:
Explanation:
Mutations are effectively errors in the DNA copying or transcription processes. They can occur naturally or be caused by mutagens, either chemical such as benzene or environmental such as ultraviolet light. These mutations concern the basses on DNA and can be as small as one base changing to another or as complex and detrimental as the insertion of a new base along the strand. Such mutations can drastically change the proteins created by an organism and affect entire chromosomes or genes. Some mutations that affect gametes can be passed down from parent to offspring and are called germline mutations. Such mutations can create entirely new alleles and increase a populations genetic variation. One such genetic mutation that occurs in humans in cancer. Cancers are errors in a cells DNA caused by mutations that allow the cell to grow and multiply uncontrollably copying the mutated DNA along the way. One specific type of cancer is breast cancer. Breast cancer has two different types of mutations. There are the BRCA 1 and 2 varieties. According to the charts, the BRCA 1 mutation appears to be more deadly. If a woman carries the BRCA 1 mutation, she has, once again according to the chart, an 18 percent chance of death. All of the women in the table above had a family history of cancer. This would point to the fact that cancer can be passed down as well as contracted from a certain type of mutagen known as a carcinogen. The table also references preventative surgeries in a number of women carrying both the BRCA 1 and 2 mutations as well as some without either. Unfortunately, given the data shown, it is impossible to determine the effectiveness of such procedures. To be able to judge this, data about the survival rates of women who underwent the procedures versus those who did not would be required. The bar graph above the chart also mentions ages. It shows that the numbers of cases of breast cancer increase rather quickly until ages 50-59 and then steadily and slowly decline. Most breast cancer cases occur in women 50-59 years old. This tells us that the mutation takes quite a few years to manifest as it is a genetic mutation and is furthered by the sufferers decreased ability to fight off carcinogens with age. If cancer can be removed by surgeries or by the death of the afflicted, why does it still exist in our population? The answer is simple. Cancer can be passed on hereditarily but that is not the only way for it to be contracted. Carcinogens that exist as chemicals or as environmental factors are present everywhere and can mutate one’s DNA and therefore genes. This can then be passed on to offspring as well.
Genetic variations occur as a result of recombination and mutation. Variations enable organisms to adapt to environmental conditions.
What do you mean by genetic variations?Genetic variations can arise from gene variants (also called mutations) or from a normal process in which genetic material is rearranged as a cell is getting ready to divide (known as genetic recombination).
The genetic diversity has three different sources: mutation, recombination and immigration of genes. Mutation is the driving force of genetic variation and evolution.
Genetic diversity is important because it gives species a better chance of survival. However, genetic diversity can be lost when populations get smaller and isolated, which decreases a species' ability to adapt and survive.
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Scientists studied reproduction in the New Zealand mud snail to answer the question, “Are there benefits to reproducing sexually or asexually?” Which of these hypotheses would least likely aid the scientists as they worked to answer the question?
Sexual reproduction is advantageous over asexual reproduction because it reduces the rate of mutation accumulation.
Asexual reproduction is advantageous over sexual reproduction because it allows the snails to produce more offspring.
Sexual reproduction is advantageous over asexual reproduction because it allows for snails to have increased genetic variation.
Asexual reproduction is advantageous over sexual reproduction because it decreases the snails’ need for social interaction.
Answer:
Sexual reproduction is advantageous over asexual reproduction because it reduces the rate of mutation accumulation.
Explanation:
The main advantage of sexual reproduction is that it increases the genetic variation in the species by creating new combinations of alleles.
However, asexual reproduction produces more offspring, as it is usually a quicker method of reproduction. It also does not require the organisms to socialise to mate.
Sexual reproduction does not reduce the rate of mutation, which is influenced by environmental factors as well as the genome itself.
Answer:
Ur answer is D or Asexual reproduction is advantageous over sexual reproduction because it decreases the snails’ need for social interaction.
Explanation:
i got it right on Edge 2020 ^^
Which phrase best describes the dorsal nerve cord?
answer: D
explanation: i took the test and chose the wrong answer and this was the answer :)
HELP PLEASE ILL GIVE BRAINLIEST
Answer:
external
Explanation:
Through the process of photosynthesis, plants use the sun's energy to make sugars to function. External means from an outside force, while internal means from within. Since the sun isn't inside a plant, they gather it from outside, thus it's external.
1. A certain atom has a nucleus containing five protons and six neutrons and has five
electrons orbiting the nucleus.
This atom is a form of the element...?
Answer:
Boron
Explanation:
The element Boron has five electrons , five protons and six neutrons. Its electron arrangement is 2:3
What are the reactants for photosynthesis?
Explanation:
I think the equation shows that the “ingredients” for photosynthesis are carbon dioxide, water, and light energy.
Plants, algae, and photosynthetic bacteria take in light from the sun, molecules of carbon dioxide from the air, and water molecules from their environment and combine these reactants to produce food (glucose).
You observe a sample under a microscope. It is 5 µm in diameter and has a nucleus. What would it most likely be?
Answer:
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The cell should be eukaryotic cell, as it is 5 micrometer in diameter.
What is eukaryotic cell?A nucleus, mitochondria, and an endoplasmic reticulum are membrane-bound organelles found in eukaryotic cells.
The nucleus of most eukaryotic cells contains the majority of the cell's DNA. The nucleus is the largest organelle in eukaryotes, measuring about 5 micrometers in diameter.
Eukaryotes are thought to have emerged from prokaryotes around 2.7 billion years ago, according to scientists.
The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus, whereas prokaryotic cells do not.
A nuclear membrane is found in eukaryotic cells. It contains mitochondria, Golgi bodies, and a cell wall.
It also has locomotory organs like cilia and flagella. The nucleus contains DNA, which contains all of the genetic information.
Thus, the cell is eukaryotic cell.
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Hey I just want to give back to the community for helping me up to expert. U dont have to answer the question but its hear for fun. Why do people shrink when the get older?
Answer:
Reynolds Institute on Aging, says that we can shrink for several different reasons. “Older adults can get shorter because the cartilage between their joints gets worn out and osteoporosis causes the spinal column to become shorter,” he says. “Adults can also lose lean muscle mass but gain fat
Explanation:
thx for points!!!!!!!!!!!!!!
Answer:
“Older adults can get shorter because the cartilage between their joints gets worn out and osteoporosis causes the spinal column to become shorter,” he says. “Adults can also lose lean muscle mass but gain fat. This is a condition called sarcopenia.”
What is insulin and why do people with Type 1 diabetes need it to survive?
Answer:
Insulin is needed to move blood sugar (glucose) into cells. Inside the cells, glucose is stored and later used for energy. With type 1 diabetes, beta cells produce little or no insulin.
If your body is capable of making only certain amino acids, how do we get the essential amino acids we need?
Representative organism Type of symmetry (Radial, Bilateral, or None) Type of skeleton (ENdoskeleton, EXoskeleton, or None) Type of appendages (Jointed, Not Jointed, or Absent) Segmentation (Present or Absent)
Sponges
Cnidarians
Roundworms
Annelids
Mollusks
Arthropods
Echinoderms
Vertebrates
Answer:
Sponge; Radial Symmetry; Endoskeleton; Absent Appendages; Absent Segmentation
Cnidarians; Radial Symmetry; No Skeleton; Non-Jointed Appendages; Absent Segmentation
Roundworms; Radial Symmetry; No skeleton; Absent Appendages; Absent Segmentation
Annelids; Radial Symmetry; No skeleton; Absent Appendages; Present Segmentation
Mollusks; Bilateral Symmetry; Exoskeleton; Non-Jointed Appendages; Absent Segmentation
Arthropods; Bilateral Symmetry; Exoskeleton; Jointed Appendages; Present Segmentation
Echinoderms; Bilateral Symmetry; Endoskeleton; Non-Jointed Appendages; Absent Segmentation
Vertebrates; Bilateral Symmetry; Endoskeleton; Jointed Appendages; Absent Segmentation
what reaction must occur to release the energy in atp
Answer:
respiration
Explanation:
The source of the energy required to regenerate ATP is the chemical energy stored in food (e.g. glucose)
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The relative humidity is 100%, and the temperature is hot. In a few sentences, explain how the weather would change if the temperature drops and becomes cool.
Answer: The Answer is c the relative humidity drops.
Explanation:
Answer:when the temperature drops, there is less heat obviously. that gives less of a chance for it to be humid outside. the relative humidity would drop
Explanation:
how can the people who take antibiotics increase resistant bacteria populations? Please answer using the scientific method!
Answer:
How do bacteria become resistant to antibiotics? Antibiotic resistance occurs when bacteria change in some way that reduces or eliminates the effectiveness of drugs, chemicals, or other agents designed to cure or prevent infections. The bacteria survive and continue to multiply causing more harm.
Need help ASAP
The Crust of the earth is mostly made of.......
a.Fe and Ni
b. Silica
c. Magnesium
d. Aluminum
Answer:
b. silica
Explanation:
!!
Explanation:
A crust is the outermost layer of a planet. The crust of the Earth is composed of a great variety of igneous, metamorphic, and sedimentary rocks. The crust is underlain by the mantle. The upper part of the mantle is composed mostly of peridotite, a rock denser than rocks common in the overlying crust.
which of the following is not a difference between DNA and RNA ?
Group of answer choices
they have different phosphate groups in their backbones
They have different sugars in their backbones
DNA is a double strand and RNA is a single strand
RNA replaces thymine with uricel
Answer:
I believe the answer is:
They both have different phosphate groups in their backbones
Option A is correct. DNA and RNA have the same phosphate groups in their backbones.
DNA is deoxyribonucleic acid. DNA contains deoxyribose sugar. DNA is usually found in double strands. In DNA thymine is present.
RNA is ribonucleic acid. RNA contains ribose sugar. RNA is usually found in single strands. In RNA thymine is replaced by Uracil.
Nucleic acid is made up of phosphate group, ribose sugar, and nitrogenous bases.
Hence, options B, C, and D are incorrect.
Therefore, Option A is correct. DNA and RNA have the same phosphate groups in their backbones.
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Which statement describes the blood type of a person with the alleles IAi?
It is type AB because I and i are codominant.
It is type AB because A and i are codominant.
It is type A because i is dominant and A is recessive.
It is type A because A is dominant and i is recessive.
Answer:
C
Explanation:
Name 2 physical processes that are endothermic but not a chemical reaction?
I need this rn pls
Why does chewing food speed up digestion? *
Bacteria in the food are killed.
O Foodis mixed with protease.
O The surface area of the food is increased.
O The taste of food is improved.
PLZZ HELP ASAP 10 POINTS + BRAINLIEST TO FIRST CORRECT ANSWER...
ANY FAKE ANSWER WILL BE REPORTED AND DELETED.
A storm surge is characterized by
large hail.
strong winds.
severe lightning.
coastal flooding.
Answer:
A storm surge is characterized by coastal flooding.
Explanation:
A storm surge is a rise in sea level that occurs during tropical cyclones, intense storms also known as typhoons or hurricanes. The storms produce strong winds that push the water into shore, which can lead to flooding. This makes storm surges very dangerous for coastal regions.
I hope this helped :)
Answer:
D. Coastal flooding
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Can you identify the steps in the scientific method that correspond to Hunt's experiments?
Drag each statement under the step in the scientific method that it demonstrates.
The eggs of mice in plastic cages washed with harsh soap displayed problems during cell division that caused genetic abnormalities.
The eggs of mice in plastic cages washed with harsh soap displayed problems during cell division that caused genetic abnormalities.
The frequency of genetic abnormalities in mice is affected by exposure to bisphenol A.
The frequency of genetic abnormalities in mice is affected by exposure to bisphenol A.
Could bisphenol A from the plastic be affecting the mice in the damaged cages?
Could bisphenol A from the plastic be affecting the mice in the damaged cages?
If mice are exposed to elevated levels of bisphenol A, the frequency of genetic abnormalities in these mice will increase
Answer:
- The eggs of mice in plastic cages washed with harsh soap displayed problems during cell division that caused genetic abnormalities: Observation
- The frequency of genetic abnormalities in mice is affected by exposure to bisphenol A: Hypothesis
- Could bisphenol A from the plastic be affecting the mice in the damaged cages?: Question
- If mice are exposed to elevated levels of bisphenol A, the frequency of genetic abnormalities in these mice will increase: Prediction.
Explanation:
The scientific method is an empirical methodology used by scientific disciplines to acquire knowledge. This method provides a standardized and objective approach to make investigations (and thus obtain knowledge). The scientific method consists of 1-to make a question in order to explore a phenomenon of the natural world; 2- to raise a hypothesis, i.e., a plausible explanation of the question and deriving predictions if the hypothesis is true, 3-to make experiments and/or observations and, finally, 4-to arrive conclusions, which are the answers derived from the experimental procedures.
Help please this is my last question it’s question 4
Help please this is my last question it’s question 4
Answer:
C. Allele
what did the famous experiment by Louis Pasteur demonstrate?
Answer:
Explanation:
Louis Pasteur's pasteurization experiment illustrates the fact that the spoilage of liquid was caused by particles in the air rather than the air itself. These experiments were important pieces of evidence supporting the idea of germ theory of disease
For many generations, a forest has been the home of a single species of bird; these birds primarily eat insects off the forest floor. One year, humans living in the area accidentally introduce a new
species of bird to the forest. This new species has the same diet as the existing species. Which description predicts what will most likely result from these two species of bird living in the same
ecosystem? (5 points)
O Both bird species cannot occupy the same niche and, therefore, one species will die off.
Both bird species would share the forest and have plenty of food and resources.
One bird species will adapt and feed on different organisms in the forest.
0
The established species will battle the introduced species of bird until death.
Answer:
Both bird species cannot occupy the same niche and, therefore, one species will die off.
Explanation:
Introducing a new species of bird will lead to competition among the organism. The food source will not be adequate for both species and competition will set in leading to survival of the fittest.
The population that best compete will most likely to chase away the other species who do not have food because hunger and starvation will lead to death of the other species and the species that is able to find food will survive and reproduce and remain in the niche.