Answer:
The genetic variations that are best suited for their enviornment
Explanation:
Those that are not well suited for their environment will die off, leaving only the ones that are suited for it. This species will slowly take hold until the species has adapted and become a completely different one.
Answer:
The genetic variations that are best suited for their environment
Explanation:
This way they may also have a chance to evolve if natural selection kept going until everyone of the species had that trait.
a single strand of DNA helix has the code CGCTAA. which would be the complementary code on the other strand of helix
Answer:
The other side would be GCGATT
Explanation:
Adenine (A), cytosine (C), guanine (G), or thymine (T).
A (adenine) always pairs with T (thymine)
C ( cytosine) always pairs with G (guanine)
Hope this helps.
Sorry if it doesn't.
What is the smallest part of an element that has the same properties of that element?
Answer:
an atom
Explanation:
An atom is the smallest particle of an element that has the properties of that element.
Describe how ATP synthase produces ATP.
Answer:
so it spins the hydrogen molecules to make the ATP
Explanation:
it occurs in the inner membrane of the mitochondria. The electrons drop off the energy and the hydrogen atoms are moving through the Protein channels/pumps. after that the NADH turns into nad+ and the fadh2 turns into fad. these then go back to the citric acid cycle to get the electrons back. (known as electron carriers) the hydrogen molecules get pumped up to the inner membrane space which would be active transport since we are going from low to high concentrations. the hydrogen molecules go down the atp synthase which spins to make the atp. this would be passive transport since its moving from high to low concentrations.
Scientists have concluded that Tiktaalik lived when deciduous trees began appearing on land, an event that occurred hundreds of millions of years ago. Which radiometric probe (Carbon-14, Iodine-129, Uranium-238) would you choose to determine a more accurate age of the Tiktaalik fossil? Explain your reasoning.
PLEASE HELP ME ILL GIVE 25 POINTS
Answer:
Carbon
Explanation:
Carbon leaves a bigger footprint when investigating fossils or skeletons scientists use carbon samples.
The Carbon-14 radiometric probe should be used to determine a more accurate age of the Tiktaalik fossil. Radiometric dating is the technique used to calculate the age of fossils.
What is radiometric dating?Radiometric dating or radioactive dating is a technique which is used to date the materials such as rocks or carbon, in which trace amounts of radioactive impurities were selectively incorporated when they were formed in the fossil such as trees.
Radiometric dating is used to calculate the age in years for a geologic material by measuring the presence of a short-life radioactive element in the fossil. For examples, carbon-14, or a long-life radioactive element plus its decay product which is potassium-14 or argon-40.
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17. What are some of the major causes of extinction today?
If new experimental findings contradict a scientific theory, what might happen to the theory?
A. The new evidence could be accepted and the theory changed.
B.The theory could become law.
C.The theory could stay, ignoring the new evidence.
D.The new evidence could be rejected because it does not support the theory.
Answer:
A. The new evidence could be accepted and the theory changed.
Explanation:
most reasonable answer
All of the following are examples of Ilmiting factors in an ecosystem except:
A.) Water
B.) Food
C.) Population density
D.) Space
Answer:
C-Population Density
Explanation:
Which TWO types of rock are formed as particles get pushed closer together?
A. Metamorphic
B. Extrusive igneous
C. Intrusive igneous
D. Sedimentary
Answer:
Sedimentary rock? Because when sediments get pressed together
And then turn into a rock
What is ONE major difference in the problems associated with obtaining measurements on the sizes or densities of animal populations versus plant populations?
I think one major difference with that is that animals can move around, go distances in search for food or mate, and thus make the animal densities per geography vary greatly. Birds migrate regularly, so their population densities tend to vary with seasons. Their mobility also depends on the availability of food, so animals go away if there are no food in the area.
Plants on the other hand don't move around faster (they can migrate by reproduction: it's their seeds moving around). Thus their densities tend to be more constant per season/life cycle.
What is it called when leaves release excess water
it is known as transpiration
in the phloem, what goes out?.
Answer:
His heart. If you talking about the poem, "MY HEART GOES OUT".
Explanation:
Explain the effect of activity on a heart rate
Answer: Exercise causes the heart to pump blood into the circulation more efficiently as a result of more forceful and efficient myocardial contractions, increased perfusion of tissues and organs with blood, and increased oxygen delivery. Aerobic exercise trains the heart to become more efficient.
Explanation:
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Answer:
Pretty much the more activity you do, or the more intense it is, the faster your heartrate will be. Your heart needs blood, and when you're exercising the blood is pumping through your body faster.
Explanation:
Which of the following best explains why DNA fingerprints can be used to identify an individual, such as from a crime scene sample?
Group of answer choices
DNA is inherited from both maternal and paternal parents
DNA from 2 different species can be combined using restriction enzymes
DNA is used to make proteins during protein synthesis
Each individual has a unique DNA sequence, with the exception of identical twins
Answer:
4.
Explanation:
Everyone's DNA is unique unless they are identical twins or if you have some kind of transplant.
Of the following best explains why DNA fingerprints can be used to identify an individual, such as from a crime scene sample it is the situation that Each individual has a unique DNA sequence, with the exception of identical twins. The correct answer is option 4.
What are identical twins ?These are the babies that are formed from multiple fusion of gametes and resulting into double fertilization.
DNA is inherited from both maternal and paternal parents. Yes, it is so but the pattern is not same as it will be possible to get the idea of the pattern and analyse along with the prediction of the genome as only few % is predicted.
DNA is used to make proteins during protein synthesis and this situation is clearly correct too but the fact is that this is not helping in the case of DNA fingerprinting where it is not easy to firstly see the DNA pattern then the RNA and then the amino acids and then the proteins.
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Which of the following are representative organisms?
a. Sponges
b. Cnidarians
c. Roundworms
d. Annelids
e. Mollusks
f. Arthropods
g. Echinoderms
h. Vertebrates
Answer:
Roundworms
most sensible
Raisins are a snack that is made from dehydrated grapes. While the sugar remains in the fruit, the water is removed, giving it its characteristic wrinkled appearance. A student is curious if she could rehydrate a raisin and get a grape again. She runs an experiment where she places a raisin in distilled water, another raisin in tap water, and a third raisin in salt water. The movement of water in and out of the raisin is called
Answer:
This structure which allows these passages is called the cell membrane. Substances outside the cell can move in and out of the membrane through a process called diffusion. When the substance in question is water, the process is referred to as osmosis. ... Water can be put back into a raisin through the process of osmosis.
HELLLLPPPPPPPP Which statements describe asexual reproduction? Check all that apply
results in offspring with different DNA than parent
results in offspring with the same DNA as parent
requires only one parent to produce offspring
requires two parents to produce offspring
includes cell divisions that are similar to the cell divisions in meiosis
includes cell divisions that are similar to the cell divisions in mitosis
Answer: the second one, the third one, and the last one.
Explanation:
Answer:
Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent. Sexual reproduction involves two parents and produces offspring that are genetically unique.
Explanation:
is snail invertebrates animal
Answer:
slugs and snails are invertebrates animal
Answer:
invertebrates is snail.
Herman's company has adopted a paperless policy. Employees no longer print letters or documents and instead do everything on the computer. Office paper use has dropped by 40% in the last six months. If everyone adopted the same policies, what impact would that have on the environment?
Answer:
There would be a decrease in deforestation, because fewer trees would be cut down for paper.
Explanation:
If everyone reduce the use of papers it will lead to reduce in deforestation.
What is deforestation?Deforestation refers to the loss of forest area worldwide to other uses such as agricultural land, urbanization and mining activities. Deforestation, greatly accelerated by human activities since the 1960s, has adversely affected natural ecosystems, biodiversity and climate.
Several factors, both human and natural, cause deforestation. Natural factors include natural forest fires and diseases caused by parasites that can lead to deforestation. Nevertheless, human activities are one of the main causes of global deforestation.
Therefore, If everyone reduce the use of papers it will lead to reduce in deforestation.
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What is the relationship between Earths orbit around the sun and the force of gravity.
Answer:
Explanation:
the relationship is that if the sun stopped spinning, the earth would fly off into space and so the earth needs the suns gravity to keep us alive ^^
Answer:
the planets orbit the Sun is related to why objects fall to Earth when we drop them. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.
Explanation:
9) Which of the following statements is TRUE about photosynthesis?
If you say that a ground squirrel has greater evolutionary fitness than another ground squirrel in the same population, you mean that the animal
Answer:
Has more offspring that have the ability to survive and reproduce themselves.
Explanation:
Evolution fitness can be defined as a characteristic or quality possessed by living organisms and determines their adaptability, as well as level of success in terms of reproduction i.e giving birth to offsprings.
Hence, if you say that a ground squirrel has greater evolutionary fitness than another ground squirrel in the same population, you mean that the animal has more offspring that have the ability to survive and reproduce themselves.
Which of the following is true regarding lipids? *
1 point
Answer:
there are no answers, you can put them in the comments
Explanation:
which of the following is FALSE?
a. sex-linked traits can affect females, but it’s rare when it happens
b. autosomal disorders aren’t sexist: they affect males and females just the same
c. sex-linked disorders happen because x and y chromosomes are not homologous
d. autosomal disorders affect all chromosome pairs
e. sex-linked disorders can be inherited in the x chromosome of both mom and dad
Answer:
option C is incorrect
Explanation:
Because sex chromosomes don’t always come in homologous pairs, the genes they carry show unique, distinctive patterns of inheritance.
Identify the Mitotic phases.
Answer:
1 prophase, 2 metaphase, 3 anaphase, and 4 telophase.
Explanation:
Answer:
1= prophase
2= metaphase
3= anaphase
4= telophase
Explanation:
(because yes) hope this helps!
Why did Mendel study pea plants?
They reproduce asexually and have one trait that is easy to observe.
They reproduce asexually and have many traits that are easy to observe.
They reproduce sexually and have one trait that is easy to observe.
They reproduce sexually and have many traits that are easy to observe.
Answer:
For Gregor Mendel, pea plants were fundamental in allowing him to understand the means by which traits are inherited between parent and offspring. He chose pea plants because they were easy to grow, could be bred rapidly, and had several observable characteristics, like petal color and pea color.
Explanation:
Gregor Mendel chose the pea plants for his experiments because the garden pea is an ideal subject in the study of genetics for the following reasons: The presence of observable traits with contrasting forms. It produces many offspring in one cross. Short life cycle.
Why did Mendel choose pea plants to study?Solution: Pea plants were chosen for Mendel's experiments because they are easy to grow, have a short life period, and produce larger flowers. Pea plants are also self-pollinated.
What was the purpose of the pea plant study?Gregor Mendel describes his experiments with peas showing that heredity is transmitted in discrete units. From the earliest time, people noticed the resemblance between parents and offspring, among animals and plants as well as in human families. Gregor Johann Mendel turned the study of heredity into a science.
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What are the reactants of photosynthesis?
Answer: sunlight, carbon dioxide and water from soil to make glucose
Explanation:
Happens in the chloroplast
Answer:
CORRECT (SELECTED)
Carbon dioxide and water
Explanation:
In photosynthesis, carbon dioxide and water react, along with light energy, to form glucose and oxygen.
Which of the following organisms in the soil food chain does not obtain energy directly from plants?
a. bacteria
b. fungi
C. protozoa
d. nematodes
Answer:
C
Explanation:
Protozoa have been classified into three trophic categories: the photoautotrophs which harness the sun's radiant energy in the process of photosynthesis; the photoheterotrophs, which although phototrophic in energy requirements, are unable to use carbon dioxide for cell synthesis and must have organic carbon compounds
Protozoa in the soil food chain does not obtain energy directly from plants. So, the correct option is C.
Who are Protozoa?Protozoa is defined as a group of single-celled eukaryotes, which is either free-living or parasitic, that feed on other microorganisms or on organic matter such as organic tissues and debris.
Protozoa are classified into two trophic categories:
Photoautotrophs that harness the Sun's radiant energy in the process of photosynthesisPhotoheterotrophs which although phototrophic in energy requirements, are unable to use carbon dioxide for cell synthesis and must be organic carbon compounds.Thus, Protozoa in the soil food chain does not obtain energy directly from plants. So, the correct option is C.
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Which of these is NOT a disease caused by bacteria?
A. Stayhyococcus aureus
B. streptococcus pneumonia
C. Hemophilus Influenzae
D. Penicillium erythromycin
Answer:
A
Explanation:
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Which of the following is true regarding enzymes?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Enzymes can only be used once during a reaction.
(Choice B)
B
Enzymes are reusable.
(Choice C)
C
Enzymes are usually carbohydrates.
(Choice D)
D
Enzymes denature at their optimum temperatures.
Answer:
C. Enzymes are reusable.
Explanation:
Ribosomes are the site where
are produced.
Amino acids are coded for by triplet bases in RNA called
Answer:
Ribosomes are where PROTEINS are produced.
Amino acids are coded for by triplet bases in RNA called A CODON.
Explanation:
Answer:
proteins
codons
Explanation:
Edge