Answer: sunlight
Explanation:
When going to a higher power, where should the object be placed in the field of view?
Answer:
Return to the previous (lower power) objective.
Center the object in the field of view.
Go to the higher power objective and use only the fine focus.
Explanation:
How are two organisms who descend from the same common ancestor related?
a.)geographically
b) slightly
c) distantly
d) closely
Answer:
d i think, Hope this helped.
Explanation:
Answer:D
Explanation:
two features of indirect democracy
Answer:
trump
Explanation:
Which element is not found on most main sequence stars?
Answer:
Nitrogen is the right answer.
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 ...
If its rigth can i get brainly esst Please :c
Why does salt affect water potential? (Osmosis related)
Answer:
Explanation: Las sales reducen el potencial osmótico del agua, aumentando la necesidad de energía que requieren las plantas para extraer la humedad del suelo, volviéndolas más susceptibles al marchitamiento.
Where are coral reefs located?
A. estuaries
B. neritic zone
c. intertidal zone
D. oceanic zone
Answer:
c
Explanation:
intertidal zone
5. Describe the different causes of climate change.
Answer:
natural factors, changes in the sun, emissions from volcanoes, variations in Earth's orbit and levels of carbon dioxide.
Explanation:
Compare and contrast the TWO classes of "seeded "plants.
Answer:
The seed plants are often divided arbitrarily into two groups: the gymnosperms and the angiosperms. The basis for this distinction is that angiosperms produce flowers, while the gymnosperms do not.
Explanation:
The seed plants are often divided arbitrarily into two groups: the gymnosperms and the angiosperms. The basis for this distinction is that angiosperms produce flowers, while the gymnosperms do not. This is poor form, since it defines the gymnosperms by the absence of a character, and not by any features that the organisms actually share. The gymnosperms do share a number of features, but, as should be obvious from the above cladogram, they are not more closely related to each other than to the angiosperms (Anthophyta). The features shared by gymnosperms were likely present in the early ancestors of the flowering plants as well. It should also be noted that the "progymnosperms" are represented by a box of a different color, in order to make it clear that they are not actually seed plants, but rather are included here because they are believed to be the closest relatives of the seed plants.
Systematics within the seed plants is poorly understood. Part of the problem is that most of the major groups have gone extinct, and several of the groups alive today consist primarily of plants with highly derived morphologies. The above cladogram is based largely on the work of Jim Doyle, a professor at UC Davis, and Michael Donoghue, currently at Harvard, and is therefore somewhat preliminary. It includes some questionable groupings not explicitly supported in their papers.
Molecules that make up living things and contain carbon are called __________ molecules.
Molecules that make up living things and contain carbon are called organic molecules.
Organic molecules are those that derive their three-dimensional configurations primarily from their carbon skeletons.
Organic molecules are essential for the birth, development and functioning of all cells that make up living organisms.
About organic molecules:
All organic molecules contain carbon and practically always hydrogen, it is also frequent that they have oxygen or nitrogen.These chemical elements enable multiple and covalent bonds to be established, allow carbon atoms to develop three-dimensional skeletons, and give rise to multiple functional groups. Proteins, vitamins, carbohydrates, lipids, and nucleic acids are organic biomolecules, which are synthesized by living organisms.Therefore, we can conclude that molecules that make up living things and contain carbon are called organic molecules, which a living being needs to develop normally.
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Which two types of clouds usually do not produce rain or snow?
A. Altostratus
B. Cumulonimbus
C. Cirrus
D. Cumulus
Answer:
It is b or option 2, Cumulonimbus
Answer:
The answer is C and D
Explanation:
They do not produce ANY rain or snow they are the peaceful clouds sometimes little drips but most of the time basically all the time it is clear sky!
what is the fundamental unit of matter?
the atom is the fundamental unit of matter.
(hope this helps ^^)
Where dose plastic come from?
Answer:
Plastics are derived from natural, organic materials such as cellulose, coal, natural gas, salt and, of course, crude oil. Crude oil is a complex mixture of thousands of compounds and needs to be processed before it can be used. The production of plastics begins with the distillation of crude oil in an oil refinery.
Explanation:
restriction enzymes cut DNA at totally random places. true of false?
Answer:
False
Explanation:
Restriction enzymes, also called restriction endonucleases, are enzymes found in bacteria that cut DNA. They recognise target sequences and cut DNA at or near these sequences. These sequences are called restriction sites.
They act as a defense mechanism against invading pathogens. However, they are routinely used in molecular biology labs to perform DNA technologies such as genetic engineering.
how will you describe the process that is shown in the diagram
Answer:
what diagram are u talking about
Which structure in a cell makes proteins using coded instructions that come from the nucleus?
Answer:
Ribosomes
Explanation:
Ribosomes are small particles of RNA and protein found throughout the cytoplasm. Proteins are assembled on ribosomes. The nucleus gives coded instructions to the ribosomes, so they know what proteins to build.
Which of these describes an amphiarthrosis joint?
A joint in the elbow that permits movement in one plane.
A joint in the ankle that allows rotational movement.
A joint at the base of the skull that permits flexion and extension of the neck.
A joint in the spine that is slightly movable and separated by cartilage.
Answer:
D. A joint in the spine that is slightly movable and separated by cartilage.
Explanation:
got it from edge2020
Answer: A joint in the spine that is slightly movable and separated by cartilage.
Explanation:
Read the article and use the information to answer the question that follows.
Forensic DNA
How can DNA be used to help solve a crime?
Answer:
Each person’s DNA is unique.
Scientists use variable regions in DNA to create a DNA profile.
DNA samples can be taken from blood, bone, hair, or other body tissues and
products.
DNA from a crime scene can be compared to DNA from a suspect.
DNA typing can be used to solve old cases.
Explanation:
edge 2021
DNA can be used to solve a crime as the sample of the DNA of a person can be compared to the evidence that's gotten from a crime scene.
Deoxyribonucleic acid which is commonly referred to as DNA is the molecule that has all the information that's vital to build an organism. Each person’s DNA is unique.
DNA contains the genetic information of everyone. DNA samples can be taken from blood, bone, hair, or other body tissue.
To solve a crime, DNA from a crime scene can be compared to DNA from a suspect. If the DNA collected is the same as the one that's seen at the crime scene, then it shows that the person is responsible for the crime.
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What system do we use to bind periods, eras, etc., of time together?
Answer:
The Geological Time Scale
Explanation:
The Geological Time Scale is the framework in which the history of the Earth is inscribed. It combines a numerical scale that uses the million years as a unit (chronometric scale) and a scale that is expressed in relative time units (chronostratigraphic scale).
The chronometric scale is based on the measurement of certain physical properties of rocks, generally the relationship between the content of stable and unstable isotopes of the same element.
What are the primary of water pollution
It occurs when foreign harmful materials like chemicals, waste matter, or contaminated substances are directly or indirectly discharged into water bodies. ... Any alterations in the chemical, physical, or biological water properties qualify as water pollution.
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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who wants free food?????
meeeeeeeeeee im hungry
Answer:
oop me
Explanation:
ฅ^•ﻌ•^ฅ also look at what a cute kitty
What is the source of oxygen as a reactant in cellular respiration?
Answer:
The Reactants
What goes into the cell? Oxygen and glucose are both reactants of cellular respiration. Oxygen enters the body when an organism breathes. Glucose enters the body when an organism eats.
Explanation:
Hope this helped, Thanks :)
Cellular respiration has been the chemical process that uses glucose to produce energy. Oxygen is the reactant of the process that comes from the air (breathing) produced by photosynthesis.
What is cellular respiration?Cellular respiration has been defined as the process vital for living organisms that use oxygen and sugar molecules to produce energy to drive the activities and functions of the body. The reactant of the process includes glucose and oxygen gas.
Oxygen and sugar are known to be the product of the photosynthetic reaction that uses carbon dioxide and water. The oxygen gas is present in the atmosphere and enters the body through breathing.
Therefore, oxygen acts as a reactant in cellular respiration that comes from the breathing process.
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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.
Define concentration gradient.
Answer:
A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower concentration, until they are evenly spaced.
When you mix salt with water in a beaker, the salt is no longer visible. What
happens to the salt?
A. The salt changes state from a liquid to a gas.
B. The salt reacts with the water to make a new substance.
C. The salt dissolves in the water.
D. The salt is destroyed by the water.
please help, i’ll mark brainliest if you get it right! please please only answer if you know the answer though, don’t guess i’m taking a test and i can’t fail as it’s the last one before the quarter ends ( tomorrow ) id appreciate it!! thank youuu
Answer:
C. The salt is dissolved by the water
Explanation:
When ionic compounds dissolve in water, the individual ions separate and get surrounded by water molecules—a process called solvation. Because the salt ions are charged, they dissolve much better in a polar solvent, which is also slightly more charged than a nonpolar solvent
Hope this helped, Have a Great Day!!
(TRUE OR FALSE)
As discoveries were made that couldn't be explained by spontaneous generations, scientist came up with an updated version of the spontaneous generation model?
PLZ HELP WILL BRAINLIEST
IF U DONT KNOW THE ANSWER DONT U DARE
Answer: I'm pretty sure this is true
Explanation:
A biologist was given a sample of an unknown organic macromolecule and 4 points
asked to determine the class of organic macromolecules to which it
belonged. The chart shown below represents the results of the biologist's
analysis of the sample. Based on these results, to which class of organic
macromolecules did this sample belong?*
Element
С
H
Number of Atoms per
molecule
6
12
6
0
0
0
K
N
P
Protein
O Carbohydrates
Lipids
0 Nucleic Acid
Answer:
CarbohydratesExplanation:
Glucose is an organic molecule made up of carbon, hydrogen and oxygen. This simple sugar has the formula C6H12O6 - 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms and is used as an essential means of obtaining chemical energy through various forms of respiration.
Polysaccharides are long chain carbohydrates. These are formed from the sugar monomer glucose, in its ringed formation. The successive molecules form 1,4-glycosidic bonds.
Can Plastic Waste Degrade Into The Soil?
Yes or no and explain
Answer:
Yes, but the process is too slow
Explanation:
We pack almost everything in this material and plastic has become a very normal occurrence in the modern world. Each year, people used 1.6 million barrels of oil just to make plastic bottles.
On the other hand, nature takes about 1000 years to develop a single plastic object, while plastic material takes about 240 years.
Match the following terms and definitions.
1. cross-breeding; a method that unionizes gametes of differing genes to create a new individual
recombinant DNA
2. cultured DNA molecules from different biological sources
hybridization
3. a process of breeding organisms because of their specific traits
selective breeding
Answer:
Hybridization - a method that unionizes gametes of differing genes to create a new individual
Recombinant DNA - cultured DNA molecules from different biological sources
Selective breeding - a process of breeding organisms because of their specific traits
Explanation:
In biology, hybridization is the process of creating a hybrid by combining gametes of different species or varieties. An example of a hybrid is a liger - an offspring of a lion and a tiger.
Recombinant DNA is DNA created in the process of genetic recombination. Genetic material from multiple sources is combined, creating sequences that do not occur in the genome naturally.
Selective breeding is the process of breeding organisms with desirable characteristics. For example, a good dog breeder will breed only two completely healthy dogs in order to make sure that the puppies don't have any health issues often associated with the breed.
Hybridization - a method that unionizes gametes of differing genes to create a new individual
Recombinant DNA - cultured DNA molecules from different biological sources
Selective breeding - a process of breeding organisms because of their specific traits