Answer:
If an atom has an outer shell that is not full, it may bond with another atom, using the electrons to complete its outer shell. These types of atoms are known as free radicals. Free radicals break cells down over time. As the body ages, it loses its ability to fight the effects of free radicals. The result is more free radicals, more oxidative stress, and more damage to cells, which leads to degenerative processes, as well as “normal” aging.
Explanation:
What is the practice of classifying organisms called?
Answer:
Taxonomy
In science, the practice of classifying organisms is called taxonomy (Taxis means arrangement and nomos mean method).
And,
The modern taxonomic system was developed by the Swedish botanist Carolus Linnaeus (1707-1778). Hope this helps..
Good Luck
The United States government does not allow travelers from foreign countries to bring plants, fruits, vegetables, animals, or other living organisms into this country. State one biological reason for keeping these out of the United States. ?
How do you know the molecule below is an unsaturated fat?
Η Η Η Η Η Η Η Η Η Η
L 1 1 1 1
|
H-C-C-C=C-C-C-C-C=C-C-C
1
1
HH HH
H
20
OH
A. The molecule contains carbon double bonds.
B. The molecule contains a carbon-oxygen double bond.
C. The molecule has no nitrogen atoms.
D. The molecule has an OH group on the end.
We know the molecule below is an unsaturated fat because the molecule contains carbon double bonds.
What is an unsaturated fat in molecule?An unsaturated fat is a fat or fatty acid in which there is at least one double bond within the fatty acid chain. A fat molecule made of chains where some carbon atoms are not fully saturated with hydrogen atoms.
Unsaturated fat, a fatty acid in which the hydrocarbon molecules have two carbons that share double or triple bond and are therefore not completely saturated with hydrogen atoms. Due to the decreased saturation with hydrogen bonds, the structures are weaker and are, therefore, typically liquid at room temperature.
Unsaturated fats are either monosaturated fats, as in olive or canola oils, or polyunsaturated fats, as in nuts, seeds, and seed oils
The correct answer is option A.
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Temperature, pH, and ionic concentrations each play an important role in the proper functioning of enzymes.
Answer:
fracture the skull
Explanation:
im guessing
When used together, perspective and color variation create what effect for the
viewer?
A. A psychological reaction
B. The illusion of depth on a flat surface
C. The illusion that a three-dimensional object is flat
D. Temporary blindness
I investigated sexual and asexual reproduction as well as the processes of cellular division by mitosis and meiosis Hypothesis: Record your predictions
Answer:
what are we predicting, the type of division or what the outcome will be
The soil in a flower pot, the amount of water added to the pot, the amount of
sunlight received by the plant, the amount and type of fertilizer given, and the
temperature of the air surrounding the pot all make up the plant's
a. ecosystems
b. habitat
c. abiotic factors
d. biotic factors
Abiotic factors are non-living components of an ecosystem that influence their surroundings. Examples may be light, water, and temperature in a terrestrial habitat, hence option C is correct.
What are abiotic factors?Abiotic variables are non-living elements that have an impact on the survival, development, and existence of living things, including plants.
We may concentrate on the water as one of these abiotic elements even though there are many others that are equally significant and have a part to play.
Water is one of, if not the most, critical abiotic factors since it is essential for plant existence. Depending on how severe the absence of water is, it will be a limiting factor for a plant's growth or even life.
Therefore, abiotic factors are non-living components of an ecosystem that influence their surroundings, hence option C is correct.
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.Specific processes must take place within the cell for protein synthesis to occur. The processes that take place within a cell for protein synthesis to occur. Which occurs during translation but not during transcription? A DNA template is used to create an mRNA strand. A tRNA template is used to create a DNA strand. A tRNA template is used to create an mRNA strand. An mRNA template is used to create an amino acid chain.
Answer:
An mRNA template is used to create an amino acid chain.
Explanation:
Transcription is the first step in the protein synthesis process. Translation is the second.
Overall, the central dogma of biology is DNA->RNA->protein.
Transcription is that first step, DNA to RNA, and translation is RNA to protein: think of it like nucleic acids can just be transcribed, but nucleic acid to protein is like a whole different language, so it has to be translated. So the correct answer here is that mRNA is used to make amino acid chain (aka protein), which happens only in translation.
Question 8 (1.25 points)
Which of the following research questions would a population geneticist be most
likely to ask?
How can we explain the amount of genetic diversity in Adelie penguins?
O How much genetic valypbility is found in sperm whales?
Why do some species have more genetic diversity than others?
All of these choices are correct.
Answer:
i believe the answer would be d, all of the above
Explanation:
all are questions relating to gene variability of a species, which would be what the population geneticist would specialize in. the scientist must ask questions and then conduct research. i hope that helps :) have a lovely week
One characteristic of many lamprey but not of hagfishes is
Answer:
Today, hagfishes and lampreys are recognized as separate clades, primarily because lampreys are true vertebrates, whereas hagfishes are not. A defining feature is the lack of paired lateral appendages (fins). Some of the earliest jawless fishes were the ostracoderms (which translates to “shell-skin”).
Explanation:
Hope this helps. :-) I explained it in the answer.
What would be the result if crossing over did not happen during meiosis in humans
Answer:
If crossing over did not occur during meiosis, there would be less genetic variation within a species. ... Also the species could die out due to disease and any immunity gained will die with the individual.
Which statement best supports the theory that eukaryotic cells evolved
through endosymbiosis?
A. Eukaryotic cells can eat prokaryotic cells by engulfing them with
cell membranes.
B. All prokaryotic cells are covered by a stiff cell wall that protects
them.
C. Their chloroplasts contain DNA that is similar to that of
prokaryotes.
D. Chains of amino acids form inside tiny bubbles filled with organic
molecules.
Answer:
Their chloroplasts contain DNA that is similar to that of
prokaryotes
Explanation:
This is based on the theory that the membrane bound organelles of chloroplast and mitochondria which are peculiar to Eukaryotas evolved from bacteria by endosymbiosis. Thus bacteria contain the DNA of these organism Evidently, these organism (Eukaryotas) must have cohabited with bacteriA some time ago
The lining of the stomach and the muscle it sits on are examples of...........Together they form the..........called the stomach.
Answer:
Tissues, organ
Explanation:
An experiment was designed to investigate the effect of caffeine on the rate of
heartbeat of fruit flies. Two populations of fruit flies were grown in a lab. Both
populations were raised drinking the same water and the same type of food. Both
populations were exposed to the same amount of light and temperature at 20
degrees Celsius. The fruit flies' heartbeats were then monitored at two hour
intervals. The fruit flies of population one were given caffeine five minutes before
their heartbeat was checked. The flies of population two were not given any
caffeine.
Which of the following is a controlled variable in this experiment?
temperature
caffeine
heart rate
experimental group
Answer:
Temperature is a controlled variable
Which kind of organic molecules did Miller and Urey create in their
experiment?
A. Glucose
B. Nucleotides
C. ATP
D. DNA
Answer:
D
Explanation:
identify the kinds of support John will need through this chronic illness he is facing in his life?
Answer:
What chronic illness are you talking about?
Explanation:
Why are fossil fuels considered nonrenewable resources?
A. They take millions of years to form.
B. They cannot be used to create electricity.
C. They form quickly due to decaying biomass.
D. They require both sunlight and water to form.
Fossils fuels take millions of years to form which are considered nonrenewable resources. So, the correct option is A.
What are Fossils fuels?A fossil fuel is defined as a hydrocarbon-containing material which forms naturally in the earth's crust from the remains of dead plants and animals that is extracted and burned as fuel where as the main fossil fuels are coal, oil and natural gas.
Fossil energy sources include oil, coal and natural gas, are non-renewable resources that formed when prehistoric plants and animals died and were gradually buried by layers of rock. Fossils fuels take millions of years to form which are considered nonrenewable resources.
So, the correct option is A.
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enzymes are macromolecular biological catalysts. enzymes accelerate chemical reactions. almost all metabolic processes in the cell need enzymes in order to occur at rates fast enough to sustain life. without them life on earth would probably not exist. identify two factors that can affect the structure and function of an enzyme and describe what causes the change to occur. course hero.
Answer:
Enzyme is a catalyst
Explanation:
Enzymes make the chemical reaction faster than usual because the activation energy required for a substance to react becomes low with presence of enzymes. if we don't have enzymes it may result to slow metabolic processes. some environmental factor can affect enzymes like over exposed to radiation can activate the enzyme causing it to disrupt. or consuming a mutagenic agents that may affect the enzymes activities.
Climate change causes extreme weather conditions
such as:
A. Flooding
B. Heat waves
C. Hurricanes
D. All of the above
Answer:
D. All of the above
Explanation:
Answer:
The answer is all of above I think
Using Escherichia coli and Entamoeba coli as examples, explain why the genus name must always be written out for the first use.
Answer:
First is always the name of the species, and second is the name of the genus or of the microbiological family group in which the microorganism is found, the name of the species always goes forward since in this way we can identify some characteristics and characteristics of the microorganisms
Explanation:
Example, in this case both microorganisms are part of the "Coli" family but the entomoeba is an AMEBA and the escherichia is an ENTEROBACTERIA, therefore already in its name it indicates a great difference between the two despite being in the same genus microbiological
Which of the following ligaments is NOT associated with the knee joint
The four main ligaments in the knee connect the femur (thighbone) to the tibia (shin bone), and include the following:
Anterior cruciate ligament (ACL). ...
Posterior cruciate ligament (PCL). ...
Medial collateral ligament (MCL). ...
Lateral collateral ligament (LCL).
What are 7 characteristics that all living things have in common??
The easy term to remember would be MRS.GREN
Which is :-
1. Movement
2. Reproduction
3. Sensitivity
4. Growth
5. Respiration
6. Excretion
7. Nutrition
Hope it helps! :>
A student groups different types of cells as shown. Which table headings should the student use for the two groups?
Answer: 1. Prokaryotic cells 2. Eukaryotic cells
Explanation:
A consumer wanted to know which type of paper towel is most absorbent. If she
conducted an experiment to discover this, the independent variable would be the ______
and the dependent variable would be________the brand of paper towel
Answer:
The independent variable could be:
square units of paper towel that are wet / have absorbedvolume of liquid that has not been absorbedvolume of liquid that has been absorbedExplanation:
The independent variable has to be something that can be quantitatively measured and that will give us an accurate depiction of how well the different paper towel brands can absorb things. Hence, an answer like "amount of water absorbed" is not quite enough because we need to know what exactly we're measuring. Volume or area are both feasible options.
Precipitation that flows over the surface of the ground is called groundwater.
True or False
Answer:
true
Explanation:
Answer: true
Explanation:
In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravity from clouds. The main forms of precipitation include drizzle, rain, sleet, snow, ice pellets, graupel and hail.
which characteristic of life distinguishes a fire and a flowering plant? A. use of energy B. movement C. growth D. defined boundary
Answer:
A. Use of Energy
Explanation:
Which are electrical "nodes" of the heart? Check
all that apply.
sinoatrial node
aortic node
lymph node
heart node
atrioventricular node
Answer:
sinoatrial node and atrioventricular node
Answer:
1. What is the proper name for the electrical system in the heart?
vascular electric system
heart pump circuit
conduction system
conductor system
2. Which are electrical “nodes” of the heart? Check all that apply.
sinoatrial node
aortic node
lymph node
heart node
atrioventricular node
Explanation:
100%
Which of the following are likely to be affected by a magnet?
Answer:
an access card as some may contain metallic properties
Explanation:
electromagnets could also be used in the scanner so this could be tried
hope this helps
Which of the following is not an appropriate unit for temperature? *
Kelvin
Celsius
O Joules
O Fahrenheit
Answer:
Joules is not appropriate
Explanation:
Joules is a unit of energy I believe, but definetely not temp.
Since pesticides run off from
several farms and fields can make its
way to are waterways such as rivers,
lakes, and oceans, what type of pollutant
are they considered to be?
A clean water act
B wastewater
C point source
D non-point source