Cars, cows and chainsaws are major polluters and their use must be regulated and limited, to reduce the emission of polluting gases into the atmosphere that can cause drastic climatic changes that harm the environment that we know intensely.
Although it is not widely publicized in the media and few people know about it, the chainsaw is a great villain of the earth's atmosphere, since its use releases large amounts of CO2 into the atmosphere, due to the burning of gasoline that these machines make to work. CO2, in addition to endangering the operator's life, is a gas that destroys the ozone layer and increases the effect of global warming. Not only does the chainsaw release this gas, but so do cars, which reinforces the need to use renewable fuels to be used in both cases.
Cows also release polluting gas, methane, which has a greater polluting potential than CO2. Methane is the result of the cow's digestive reactions, which release this gas into the atmosphere steadily. As herds of cows tend to be large, livestock becomes a major polluter, as herds result in a strong release of methane into the environment. This reinforces the need for increasingly stronger regulations for livestock, in addition to highlighting the importance of adopting alternative methods of feeding that reduce meat intake.
Eye color is an example of (20 Points)
translational control.
gene regulation.
transcriptional control.
gene expression.
eye color is an example of Gene expression
Which of the following is the MOST complex?\
A.Eukaryotic Cell
B.Prokaryotic Cell
C.Ebola
D.Virus
Answer: Hi!
Your answer would be a), eukaryotic cells. We should automatically know that prokaryotic cells are less complex than eukaryotic cells. However, the last two options, Ebola and Virus, are both viruses. Viruses are not considered living and they don't really do anything besides replicate, which they need living cells to do. On the other hand, Eukaryotic cells have organelles, a nucleus, etc. They are definitely classified as living, and complex!
Hope this helps!
The most complex cell is eukaryotic cells. Therefore, option (A) is correct.
What is a eukaryotic cells?Organelles that are membrane-bound and found in eukaryotic cells include the nucleus, mitochondria, and endoplasmic reticulum. Protozoa, fungi, plants, and animals are examples of eukaryotic cell-based organisms. The biological domain Eukaryota is where these species are categorised. Eukaryotic cells are bigger and more sophisticated.
Organelles found in eukaryotic cells conduct a range of tasks inside the cell (described in detail, below). The cytoskeleton, which is also important in relaying signals from one area of the cell to another, stabilises and physically supports each organelle. Microtubules, microfilaments, and intermediate filaments make up the majority of the cytoskeleton in eukaryotic cells. Cytosol is the name given to the liquid that covers every cell organelle.
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Need Help!!! 30 points! You are monitoring coral growth on a specific site for several months. Over time, you notice that some of the coral colonies are beginning to turn white and die. What process could you infer is happening on the coral reef site?
(A) The coral reef is experiencing succession, so over time the coral will continue to die off gradually as the zooxanthellae algae leaves the coral polyps.
(B)The coral reef is experiencing succession, so the coral will continue to die off quickly as the zooxanthellae algae leaves the coral polyps.
C) The coral reef is experiencing climate change, so the rise in ocean temperatures is causing the coral to bleach as the zooxanthellae algae leaves the coral polyps.
(D) The coral reef is experiencing climate change, so the coral will die off from seasonal variation, which has no impact on zooxanthellae algae in the coral polyps.
Answer:
B) The coral reef is experiencing succession, so the coral will continue to die off quickly as the zooxanthellae algae leaves the coral polyps.
The coral reef is experiencing succession, thus as the zooxanthellae algae departs the coral polyps over time, the coral will continue to gradually die off. Therefore, option (B) is correct.
What is succession in coral reefs?When several living things in a particular area undergo succession, it doesn't matter what time of year it is. The destruction of a portion of a shallow reef by a boat might be one of the numerous instances of succession in coral reefs seen all over the world.
Since the coral reef is undergoing succession, when the zooxanthellae algae leave the coral polyps, the coral will continue to quickly decline. The coral is bleaching as the zooxanthellae algae leave the coral polyps as a consequence of climate change harming the coral reef. Seasonal changes will cause the coral to die off since the coral reef is experiencing climate change. The coral polyps' zooxanthellae algae are unaffected by this.
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g Describe the structure of Hemoglobin. Does the binding of oxygen involve the direct interaction with the polypeptide chain
Answer:
Hemoglobin is an iron-containing protein present in the blood that functions for transportation of oxygen to different body cells..
Each hemoglobin molecule have tetrahedral structure consist of four heme groups surrounded by a globin group. Heme, is composed of porphyrin (ringlike organic structure) which is attched to an iron atom. There are four iron atoms in each molecule of hemoglobin that binds with four oxygen atoms and globin carry two linked pair of polypeptide chain.
The oxygen reversibly binds with the polypeptide chain and the process called oxygenation.
Bacterial infections have become much more of a threat to human health due to which of the following?
A. an increase in acquired antibiotic resistance by innocuous strains
B. horizontal transfer of pathogenicity
C. an increased use of antibiotics, horizontal transfer of pathogenicity, and an increase in acquired antibiotic resistance by innocuous strains the increased use of antibiotics
D. an increased use of antibiotics coupled with an increase in acquired antibiotic resistance by innocuous strains
Answer:
C
Explanation:
Infections caused by bacteria have become much more of a threat to human health due to increased use of antibiotics, horizontal transfer of pathogenicity, and an increase in acquired antibiotic resistance by innocuous strains due to the increased use of antibiotics.
Increased and unregulated use of antibiotics has led to the development of antibiotic resistance by different bacterial strains as a result of evolution by natural selection. The unregulated use of antibiotic act as a selection pressure on the bacterial population. Those that are naturally able to withstand the presence of antibiotics are selected for and the weak individuals gradually fade off from the population, leaving the strong, antibiotic-resistant ones behind.
The potential of bacterial strains to also transfer transposable genetic elements horizontally from one individual to another could make bacteria that are non-virulent before to become virulent.
Correct option: C.
2. What purpose does fat serve in the body?
Explanation:
fat give your body energy and to help cell growth and helps your body warm
If you use a cladistic approach (organizing taxonomic groups by clades) in grouping organisms together, the resulting classification scheme:
Answer:
The classification scheme is ancestor.
Explanation:
In cladistic approach is a type of classification in which organisms are classified on the basis of their common ancestor. Those organisms are placed in one group which have common ancestor and share same characteristics or which are evolved from a common ancestor. With the passage of time changes occurs within the body of organisms so these organisms are different from one another in physical structure but have a common ancestor.
What prevents organisms from reproducing an unlimited number of offspring?
The primary reason living organisms cannot produce an unlimited number of offspring is senescence, otherwise known as old age.
Cells of the reproductive organs divide and continually make it possible for organisms to reproduce. As time goes on, the old cell dies and new cells replace them through mitotic or meiotic cell division of young cells that still has the ability to divide.
However, as programmed cell deaths occur with old age, the reproductive cells start losing the ability to divide, and when this happens, the ability for organisms to reproduce becomes limited.
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HELPPPP (25 points)
Identify this
an insect population is growing in such a way that the number in each generation is approximately 1.5 times that of the previous generation. if there are 100 insects in the first generation, approximately how many insects will there be in the fourth generation
Answer:
Approximately 338
Explanation:
Since each generation of the insect is approximately 1.5 times that of the previous generation. Therefore,
Population of insect in the first generation = 100
Population of insect in the second generation = 1.5 × 100
= 150
Population of insect in the third generation = 1.5 × 150
= 225
Population of insect in the fourth generation = 1.5 × 225
= 337.5
The population of insect in the fourth generation is approximately 338.
PLS HELP ME QUICK!!!!
Figure (13) shows the digestive system with parts
labelled as A, B, C, D and E.
a) Identify the parts where digestive juices are
not produced.
b) What is the substance in C which helps the
digestive juices to act? Digestion of which
component of food happens here?
c) What is the function of part E?
d) In which part does digestion of food
complete?
e) Name the gland present just below part C.
What is its function?
HELP ME IN THIS QUESTION PLS!!
Answer:
a) esophagus and intestines
b) the acid in the stomach helps the digestive juices to act by making the medium in the stomach acidic
c) it helps in getting rid of waste substances(water,bile pigments and sloughed off cells) and bacteria
d) colon
e) pancreatic glands
it produces juices that help breakdown food and hormones that controls blood and sugar levels
Explanation:
During the formation of a feather, a tube-like _____ appears as a result of early induction events within the dermal layer of the wing surface.
Answer:
During the formation of a feather, a tube-like __FOLLICLE___ appears as a result of early induction events within the dermal layer of the wing surface.
Explanation:
What does it mean for an environment to be isotonic?(1 point)What does it mean for an environment to be isotonic?(1 point) The concentration of solute in the environment is different from the concentration inside the cell. The concentration of solute in the environment is equal to the concentration inside the cell. The concentration of solute is greater in the environment than inside the cell. The concentration of solute is greater inside the cell than in the environment.
Answer:
The correct answer is : The concentration of solute in the environment is equal to the concentration inside the cell.
Explanation:
Isotonic environment is an environment the amount of solute concentration is equal on both side of the semipermeable membrane or the cell. in such condition there would be no water movement towards particular direction or will take place and as there is no water movement so there would be no change in shape or size of the cell. The osmotic pressure in an isotonic environment would be same on both side of the membrane.
Thus, the correct answer is : The concentration of solute in the environment is equal to the concentration inside the cell.
Which properties of systems does a robot have? Which does it not have?
Answer:
Physical structure, movable and brain.
No feelings and no reproduction.
Explanation:
A robot have the following properties of systems such as they have a physical structure which helps them to move from place to place. They also have a sensor system which detect any change in the environment, a power supply which helps them for doing different activities and a computer brain which control all the activities. A robot does not have any feelings such as pain, happiness etc because it is a machine and inability to reproduce like humans.
5) The troposphere of the Earth's atmosphere supports life because it contains
A. Water, oxygen, carbon dioxide, other greenhouse gases
B. Water, nitrogen, helium, and argon
C. Water, oxygen, carbon monoxide, methane
D. Water, nitrogen, oxygen, carbon monoxide
Answer:
I think its A
Explanation:
Because the reason why airplane have closed windows is because we can't breathe in carbon dioxide when we go up. Of course there is oxygen just not a lot as we go up. Why would there be helium in the air? We would sound weird when we skydive.
What are the three parts that make an amino acid?
"The beaks of the Galapagos finches that Darwin observed evolved into multiple shapes, and each is adapted for what?"
Answer:
Finch beaks were differentiated according to the different foods that each particular finch fed on.
Each finch developed in different zones and climax of the Galapagos island, that is why they were conditioned by the environment in which they lived, each particular environment made these finches adapt and evolve to be able to fulfill their life and not with extinction of the species.
This speaks of the evolution of species, how it adapted to environmental changes to survive, and how the fittest survive in the face of adversity.
Explanation:
Animals can have genetic modifications, which if they are inherited through generations and are optimal for the species is considered evolutionary processes of the species, beneficial for its survival.
Genetic changes are stimulated by environmental changes, and expressed with phenotypes, that is, with physical characteristics or qualities such as the different morphologies of finch beaks.
Each finch feeds on different sources, that is why those that eat hard insects will have more resistant beaks, those that have to remove the insect from the trees have more pointed beaks, those that grind seeds or fruits from the ground have more robust beaks and in the form of a "hook" for the possible crushing of the husk of the seed.
What amino acids do trypsin and chymotrypsin cut at?
Answer:
Trypsin cuts at lysine and arginine amino acid residues at the carboxyl end. Chymotrypsin cuts at tryosine , phenylalanine, and tryptophan amino acid residues at the carboxyl end.
Explanation:
Trypsin and chymotrypsin are known as proteolytic enzymes which are actively involved in the digestive system. They are both secreted by the pancreas and are majorly involved in the breakdown of protein in the small intestine.
Trypsin cuts at lysine and arginine amino acid residues at the carboxyl end. Chymotrypsin cuts at tryosine , phenylalanine, and tryptophan amino acid residues at the carboxyl end.
One of the most crucial factors in the development of fatigue appears to be a depletion of ATP.
a. True
b. False
Answer:
Option A
True
Explanation:
Adenosine triphosphate (ATP) is the molecule in the cells that carry energy. They help to trap the energy that is obtained during respiration and the breaking down of food, in order to release it to the cells of the living organisms when the need arises.
Once the ATP levels deplete in the body, cellular fatigue begins to occur, as the cells do not have the required energy to perform their necessary functions.
This makes the correct option to be A: True. The depletion of the ATP levels in the body causes fatigue
what tools should a scientist use to measure grams
Explanation:
you can use a scale or a balance
Answer:
Balance/scale
Explanation:
Who were the scientist who discovered the plasmid PB322?
A) Rodriguez & beliver.
B) Joller smith.
C) Herbert boyer.
D) Stanley cohen & joller smith.
Answer:
c) Herbert Boyer
Explanation:
This long muscle lies obliquely across the anterior thigh.It allows you to sit in a crossed-leg (lotus)position.It flexes the leg at the knee and abducts and laterally rotates the thigh at the hip.
A) Hamstrings
B) Quadriceps femoris
C) Sartorius
D) Gastrocnemius
Answer: it's C
Explanation:
The sartorius muscle is the longest muscle in the human body. It is a long, thin, superficial muscle that runs down the length of the thigh in the anterior compartment. The name Sartorius comes from the Latin word sartor, meaning tailor, and it is sometimes called the tailor's muscle.
(iii) List TWO structural differences between this polysaccharide and glycogen.
[2 marks]
Answer:
Cellulose, starch, and glycogen are all polymers of glucose, but differ in form and function because of the optical isomer involved, the length of the polymers, and the degree of branching.CELLULOSE is an unbranched, long chain glucose polymer held by ß-1,4 glycosidic bonds. The straight, tightly packed chains give cellulose high tensile strength and resistance to hydrolysis.
STARCH is a mixture of two polysaccharides: amylose (unbranched with alpha-1,4 glycosidic bonds) and amylopectin (branched with alpha-1,6 glycosidic bonds). The alpha-1,4 glycosidic bonds and more branched nature of starch account for ith physical properties; starch is powdery and more easily hydrolyzed than cellulose, which exists as tough microfibrils.
GLYCOGEN, like starch, is a branched polymer. It is similar to amylopectin, being composed of alpha-glucose molecules, but it is larger and there are more alpha-1,6 links. This makes it highly branched, more soluble, and more easily hydrolized than starch.
Please mark brainliest!
Answer:
polysaccharides have coil and long branch while glycogen has short chain.
Explanation:
polysaccharides have coil and long branch while glycogen has short chain.
Which examples are ways that models can help scientists solve problems?
Check all that apply.
A model can represent something very large.
A model can represent something very small.
A model can represent something very complex.
A model can represent something that cannot be seen or touched.
A model can represent every aspect of a complex system.
Answer:
ABCD
a model can represent every aspect of a complex system is the only wrong one.
Explanation:
photosynthesis needs a supply of CO2, H2O and sunlight. Wher do these resources come from?
Answer:
CO2 = Humans
H2O = Soil
Sunlight = Sun
Explanation:
Plants get CO2 from humans after respiration has occurred . The take the carbon that humans breathe out from the atmosphere.
Plants get H2O from the soil. The plants root absorb the water in the soil.
Plants get sunlight from the sun. Sun rays are used by plants to go through the process of photosynthesis.
Answer:
Carbon dioxide and water are released during respiration and used by plants during photosynthesis and sunlight is obtained from the sun.
Explanation:
Photosynthesis and respiration are the two processes that take place simultaneously and take the products of each other as their reactants.
In the ATP Cycle energy is transferred from sunlight or glucose to build _____ from ADP and _____________.
Answer:
1. ATP
2. Inorganic phosphate (Pi)
Explanation:
Adenosine triphosphate (ATP) is the usable form of energy by the cells of living organisms. During the light reaction of photosynthesis, energy from sunlight (solar energy) is converted to ATP in order to power the Calvin cycle stage. Also during cellular respiration, energy stored in glucose molecule is transferred to ATP.
The processes by which this synthesis of ATP from ADP (Adenosine diphosphate) occurs is called oxidative phosphorylation and chemiosmosis. Energy is stored in the ATP molecule when ADP combines with inorganic phosphate (Pi).
For a species with four pairs of chromosomes, ________ gametic combinations are possible.Group of answer choices
Answer:
16
Explanation:
For a species with four pairs of chromosomes, 16 gametic combinations are possible.
This is calculated by using the formula 2n
A normal human has two pairs of chromosome which calculated by 2*2=4 to give the possible gametic combinations. However in the case of 4 pairs of chromosomes it is calculated by 2*2*2*2= 16 possible genetic combinations.
The diagram shows a type of lipid.
Which type of lipid is shown?
A.) a saturated phospholipid
B.) a saturated triglyceride
C.) an unsaturated phospholipid
D.)an unsaturated triglyceride
Answer:B
Explanation:
In the Landolt-C acuity test, the average threshold for accurately identifying the position of the gap in the C-like character was 0.75mm in size, at a distance of 3000mm. What angle is subtended by the gap at this acuity threshold? Show your working and give your answer in Minutes of arc.
Answer:
0.859 minutes of arc
Explanation:
The arc length for a given radius and angle in radians is ...
s = rθ
So, the angle is ...
θ = s/r
For the given geometry, the angle in radians is ...
θ = (0.75 mm)/(3000 mm) = 0.00025 radians
In minutes of arc, this is ...
(0.00025 radians)(60 minutes/degree)(180 degree/(π radians)
= (0.0025)(60)(180)/π minutes
≈ 0.859 minutes
The angle subtended is about 0.859 minutes of arc.
What would you think would happen if you reduce the incubation time to 30 minutes?
Answer:
Enzymatic activities is usually efficient when it happens at an optimum temperature. This temperature aids its proper functioning and too much of heat could as well denature the enzyme.
When you reduce the incubation time of an enzyme to 30 minutes , the enzyme may or may not have enough time to reach the amount of free energy needed to drive the enzymatic reaction.