Answer:
When an organism makes more of itself without the exchang of genetic information with another organism through sex, the reproduction is asexual.while
In sexual reproduction, the exchange of dna and other genetic material is required as it involves two separate organisms.Finally
Asexual is better in terms of time, less energy and only one organism (the parent cell) is needed for the process.Write any 2 control measures of Virus.
Answer:
Personal hygiene, environmental hygiene
Explanation:
Always take care of the body to be clean often to avoid the rate of virus sticking on and in the body through diffusion, and often clean the environment to reduce the spread of virus
What organelles produce spindle fibres. What will these spindle fibres eventually be used for?
Answer:
Centrosome
Explanation:
Spindle fibres pull the chromosomes apart.
Answer:
The organelle that produce spindle fibers are centrosome,
The main function of the spindle fibers is to pull the chromosomes apart.
What is the source of the high energy electrons for electron transport in
mitochondria?
Answer:
All of the electrons that enter the transport chain come from NADH and FADH 2start subscript, 2, end subscript molecules produced during earlier stages of cellular respiration: glycolysis, pyruvate oxidation, and the citric acid cycle.
Explanation:
Select the correct answer.
Snakes shed their outermost layer of skin regularly. Which characteristic of life is this action an example of?
A.
excretion
B.
growth
C.
homeostasis
D.
nutrition
E.
reproduction
Answer:
growth
Explanation:
A student is testing a silver colored rock sample with the lab equipment shown in the
diagram above. The silver colored rock completes the circuit and lights the bulb.
The student concludes the sample could be which of the following?
I. metal
II. metalloid
III. nonmetal
Both strands of the DNA double helix contain nitrogenous bases held together by hydrogen bonds. In DNA, the sequence of nitrogenous bases varies widely. What is the significance of the nitrogenous bases?
A. They determine the amino acids in the proteins synthesized.
B. They prevent mutations from occurring in the process of DNA replication
C. They help complete the sugar-phosphate backbone of DNA molecules.
D. The amount of adenine and cytosine determines the length of the gene on a DNA molecule.
Answer:
A
Explanation:
Essentially, in the process of protein synthesis, there is first transcription where mRNA is synthesized off of a DNA strand with complementary nitrogenous bases. After processing occurs (in basic terms the mRNA is literally processed) and the mRNA strand leaves the nucleus, it attaches to a large and small ribosomal subunit (a ribosome) where translation occurs. The gist of it is when the mRNA strand is being read by the ribosome. tRNA will come over and bind temporarily bringing with it a specific amino acid, starting the formation of the polypeptide/amino acid chain. Nitrogenous bases play into this as the sequence of the nitrogenous bases is what determines what tRNA will bind onto it which determines which amino acid is brought. More specifically, this deals with the codons of the mRNA and the corresponding anticodons with the tRNA, which is a bit of a more specific topic.
The nitrogenous bases help complete the sugar-phosphate backbone of DNA molecules. The correct option is C.
What is DNA?DNA, also renowned as deoxyribonucleic acid, is a complex molecule that includes all of the information required to construct and retain a lifeform.
DNA is found in the cells of all living things. In real sense, as in almost every cell in a multicellular organism contains the entirety of the organism's DNA.
DNA is composed of chemical key components known as nucleotides. These building blocks are composed of three components: a phosphate group, a sugar group, and one of four different types of nitrogen bases.
Nucleotides are linked together in chains, with the phosphate and sugar groups alternating.
Thus, the correct option is C.
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2. Which of the following statements is best supported by the data?
(A) The enzyme demonstrates more activity at pH 6.0 than at pH 5.0.
(B) The enzyme has no activity at pH 6.0.
(C) A pH of 5.0 is the optimum for the activity of the enzyme.
(D) The enzymatic activity is independent of pH.
Answer:
B and D edge.............
which 3 reactions form atp?
Answer:
Answer below
Explanation:
The eight steps of the citric acid cycle are a series of redox, dehydration, hydration, and decarboxylation reactions. Each turn of the cycle forms one GTP or ATP as well as three NADH molecules and one FADH2 molecule, which will be used in further steps of cellular respiration to produce ATP for the cell.
Which of the following bio molecule groups is described by the roles and functions listed above
Answer:
Explanation:
Some of the important functional groups in biological molecules are shown above: hydroxyl, methyl, carbonyl, carboxyl, amino, phosphate, and sulfhydryl (not shown). These groups play an important role in the formation of molecules like DNA, proteins, carbohydrates, and lipids.
Annie is herding cattle when one of them gets spooked. What is the likely reaction of the herd? A they will all become agitated B they will not react to a single cow C they will follow the direction of the handler D they will try to protect the spooked cow
Answer:
A
Explanation:
Answer:
the answer is D, they will all become agitated
Explanation:
i got it wrong and it showed the correct answer
When would you expect the smallest change between high and low tides?
Answer:
During a neap tide.
Explanation:
Neap tides are when the tidal movement is affected in the least magnitude by the moon.. This happens just after the moon is in its first and third quarter. So roughly every fornight
Which of the following is a slow process that changes earths surface (flooding), (earthquake), (wind erosion), (volcanic erosion)
Answer:
i'm pretty sure it's earthquake.
Explanation:
Answer:
flooding because of water erosion.
Hope this helps!!!For which swimming stroke is diving not recommended to start a race?
Answer:
Backstroke
Explanation:
For backstroke, you have to lay on your back. When I was on a swimming team, we'd always go on the diving blocks for all strokes except for backstroke.
Backstroke is the swimming stroke in diving that is not recommended to start a race
There are different types of swimming strokes such as
Butterfly Backstroke BreaststrokeFreestyleThe backstroke involves the use of the back on water for movement. This
stroke has a main advantage which is the ability of the swimmer to breathe
well in water as his nose aren't always submerged in it.
The backstroke isn't however recommended to start a race as there is the
issue of the inability to see where he/she has to dive into the water or swim
through. Other swimming strokes are however recommended for starting a race.
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Which statement best describes the initial process of N-linked glycosylation in the endoplasmic reticulum
Answer:
The oligosaccharide is assembled on the lipid carrier at the membrane of the ER
Explanation:
N-linked glycosylation consists of the attachment of an oligosaccharide (glycan) to a nitrogen atom of the asparagine (Asn) residue in the protein. N-linked glycosylation is a key posttranslational modification (PTM) capable of controlling protein structure and function, this pathway takes place in the plasma membrane in archaea organisms and in the membranes of the endoplasmic reticulum (ER) in eukaryotic organisms. In eukaryotic cells, the N-linked glycosylation conserved pathway consists of two steps. In the first place, the oligosaccharides are assembled on a lipid carrier called dolichyl pyrophosphate localized in the endoplasmic reticulum (ER). The dolichyl-phosphatase is a hydrolase enzyme that acts on phosphoric monoester bonds. Second, the oligosaccharides are modified by specific glycosyltransferases that transfer these molecules to selected Asparagine (Asn) acceptor residues of polypeptide chains that have entered the lumen of the ER. These N-glycans are firstly assembled as a dolichol-linked precursor oligosaccharide at the cytoplasmic face of the ER.
Fill in the blank with the appropriate directional term to complete the following sentences as if a body is in anatomical position. More than one answer may be correct. Use terms from the previous slide.
The heart is to the lungs.
The knee is to the hip
The wrist is to the hand
The mouth is to the nose.
The thorax is to the abdomen
The thumb is to the ring finger
The sternum is to the heart
The skull is to the scalp
The ears are to the nose
Dorsal refers to the of the human body, while ventral refers to the of the human body
WORDS:
.
Deep Front Anterior Proximal Superficial Posterior Inferior Superior Distal Back Medial
Explanation:
Dorsal is posterior(back). Ventral is anterior(Front)
Why are Canada’s Evergreen Forests considered “Earth’s Northern Lungs”? (think about the photosynthesis equation)
Answer:
Although trees have responded to global warming in the past‐ to temperatures higher than they are now- the rate of change predicted in the 21st century is likely to be unprecedented. Greenhouse gas emissions could cause a 3°-6°C increase in mean land surface temperature at high temperatures and temperatures latitudes. Despite this, few experiments have isolated the effects of temperature for this scenario on trees and forests. This review focuses on tree and forest responses at boreal and temperate latitudes, ranging from the cellular to the ecosystem level. Adaptation to varying temperatures revolves around the trade- off between utilizing the full growing season and minimizing frost damage through proper timing of hardening in autumn and dehardening in spring.
If a red-eye female fly is crossed with a red-eye male fly, could they produce offspring with white eyes? Briefly explain your answer. Your answer must include a Punnett square that proves your answer.
If the red-eye parents are homozygous, no. But if the red-eye parents are heterozygous, yes.
Monohybrid crossingWe are assuming that the red-eye trait is dominant over the white-eye trait. If two red-eye parents are crossed with one another, whether they could produce white-eye offspring would depend on the zygosity level of the parents.
Assuming that red-eye is R and white-eye is r. If the two parents are homozygous red-eyed, their genotypes would be RR. Crossing the two:
RR x RR
RR RR RR RR
All the offsprings would be RR and there is a zero chance of producing a white-eye offspring.
Now, assuming that the two parents are heterozygous:
Rr x Rr
RR Rr Rr rr
Both RR and Rr are red-eyed while rr is white-eyed. The Punnet's square for the cross can be found in the attached image.
In other words, it will only be possible for the two red-eye parents to produce white-eye offspring if they are both heterozygous. Any other genotype will give a zero chance of white-eye offspring.
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State which type of fat is harmful to human, and what kind of bonds it has. *
Answer:
saturated fats:single bonds
trans fat: one doubled bond
Niagara Falls is a big waterfall on the border of Canada and the United States. Each year the edge of the waterfall moves back a couple of centimeters because the water is breaking apart the rocks on the edge. What is this an example of? Why?
What is a scientific theory? Make up your own scientific theory.
Answer:
A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not guesses, but reliable accounts of the real world.
Explanation:
I hope this helps :)
Different energy sources provide different benefits to individuals and the environment. What are some nonpolluting sources of energy? a. coal, oil, and natural gas. c. alcohol and acetylene. b. nuclear energy. d. wind, solar, and hydroelectric power.
Answer:
Its D
Explanation:
Because they cause no harm to the environment and they are very safe to the environment.
Answer:
D
Explanation:
I took the test on edge
Although Natasha is a brilliant pianist snd highly acclaimed ballet dancer, her high school intelligence test scores were only average. What does Natasha’s experience suggest regarding the nature of intelligence
Answer:
It suggests she have bodily-kinesthetic intelligence according to Howard Gardener's theory of multiple intelligences.
Explanation:
Howard Gardener's theory of multiple intelligences suggests that there are eight different types of intelligence instead of a single generalized one. Bodily-kinesthetic intelligence is one of them that is the ability to skilfullly use the body or its parts.
Natasha's experience tells that she may be high on this specific kind of intelligence as athletes like her and dancers like her are high on bodily-kinesthetic intelligence.
What is the primary use of the sugars that the algae produce?
What the things aid in the movement of the lymph?
Answer: lymphatic vessels
Explanation:
Like veins, the lymphatic vessels, which are known as lymphangions, have one-way valves to prevent any backward flow
how do eumelanin and pheomelanin affect our skin color?
Answer:
There are two types of melanin--eumelanin and pheomelanin. In general, the more eumelanin in your skin, the darker your skin will be. People who make more pheomelanin than eumelanin tend to have lighter skin with freckles. Like many other traits, the amount and kind of pigment in your skin is controlled by genes
Explanation:
What organelle in plant cells contains chlorophyll and makes food from sunlight?
Answer:
chlorplasts
Explanation:
consider the endosymbiont theory and the fact that chloroplasts contain dna molecules. given that chloroplast DNA has genes,
Answer/Explanation:
The endosymbiotic theory is the idea that eukaryotic cells evolved from the fusion of two prokaryotic cells that formed a symbiotic relationship, with one living inside the other.
An endosymbiont is one organism that lives inside another one.
The existence of mitochondria and chloroplasts, which contain their own DNA and ribosomes, supports this theory. Mitochondria are chloroplasts were once free-living organisms, they were prokaryotes that ended up inside of other cells.
Mitochondria and chloroplasts have genes that are very similar to the genes of prokaryotes. Their membranes look like the prokaryotic cell membrane, and they divide in similar ways.
Dichotomous key example
Which letter marks the zone of inhibition?
Answer:
A. B
Explanation:
"B" as labelled in the above is the zone of inhibition.
The Zone of Inhibition is actually a test which is used to assess antimicrobial activities of a material or solution in relation to an micro-organism as a target. It is also known as Kirby-Bauer Test. It measures the antibiotic resistance and also used to inhibit microbial growth.
At the Point B, microbes can not grow in there; they are inhibited.
In the test, if bacterial strain or any other strain is susceptible to the antimicrobial agent, a zone of inhibition appears. If it shows resistance to that agent, then no zone is evidential.
1.Gravity is
found only between the earth and the moon
not found in space, but is only found on earth
a pulling force that exists between all objects in the universe
a force that pushes objects away
2.Which statement is true about a planet’s orbital motion?
Orbital motion results when the object’s forward motion is balanced by a second object’s gravitational pull.
Orbital motion is limited to the moons of the planets and the planets in our solar system.
Orbital motion cannot be achieved with man-made objects.
Orbital motion only occurs when forward motion exceeds the gravitational pull.
3.How does distance affect the gravitational force?
The gravitational force decreases as distance increases.
The gravitational force is not changed by distance.
The gravitational force changes unpredictably with distance.
The gravitational force increases as distance increases.
4.As mass increases, the gravitational force
changes unpredictably
decreases
stays the same
increases
Answer:
The moon's gravitational pull on the Earth is the main cause of the rise and fall of ocean tides. The moon's gravitational pull causes two bulges of water on the Earth's oceans—one where ocean waters face the moon and the pull is strongest and one where ocean waters face away from the moon and the pull is weakest.
Explanation: