Answer:
when RNA strand is made the dna duplicates
why doesn't ice evaporate?
Answer:
Ice doesnt evaporate because it melts.
Explanation:
What describes the goal of genetically engineering crops?
Answer:
Genetically modified crops (GM crops) are those engineered to introduce a new trait into the species. Purposes of GM crops generally include resistance to certain pests, diseases, or environmental conditions, or resistance to chemical treatments (e.g. resistance to a herbicide).
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What type of organ has lost its original function through the process of evolution?
A)analogous structures
B)vestigial structures
C)embryologic structures
D)homologous structures
Answer:
B
Explanation:
vestigial structures like appendix,external part of ear,etc have lost their original function through the process of evolution.
Answer:
B
Explanation:
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Can anyone tell me how old this bird is. We found it outside.
2 points
4. What conclusion can be drawn regarding a community in which many
species are involved in a food web?
It is more fragile since organisms have more than a single food source
It is more fragile since organisms have only a single food source
It is more stable since organisms have more than a single food source
It is more stable since organisms have only a single food source
It is very prone to damage from human interference
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Why do surface currents move in circular patterns?
Answer:
Ocean water moves in predictable ways along the ocean surface. Surface currents can flow for thousands of kilometers and can reach depths of hundreds of meters. These surface currents do not depend on weather; they remain unchanged even in large storms because they depend on factors that do not change.
Surface currents are created by three things:
global wind patterns
the rotation of the Earth
the shape of the ocean basins
Surface currents are extremely important because they distribute heat around the planet and are a major factor influencing climate around the globe.
Answer:
The Coriolis effect causes winds and currents to form circular patterns.
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The hypothesis would not have been supported
by the data if...
A. traits independently assorted in
approximately a 9:3:3:1 ratio.
B. the traits for white fur and red eyes were
always inherited together.
C. all the F1 offspring had the same phenotype.
Answer: B
the traits for white fur and red eyes were always inherited together.
Explanation:
The hypothesis would not have been supported by the data if the traits for white fur and red eyes were always inherited together by the law of independent Assortment.
What is law of independent Assortment?The law of independent assortment selects alleles of two extra genes into gametes independently of each other.The allele acquired for one gene is unrelated to the allele obtained for another.Mendel's experiment constantly shown that the progeny's distinctive combinations are always unique from their parents'.He formulated the Law of Independent Assortment on this premise.So we can conclude that as the qualities for white fur and red eyes are not usually inherited together, we may deduce that the two features are regulated by distinct genes and are independently shown in the person, as stated by the law of independent Assortment.
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Please help me if you know the answer please
What two diseases have been studied together that provide evidence of evolution in
humans?
A)malaria and ebola
B)sickle cell anemia and malaria
C)cytochrome c disease and plasmodium fever
D)iron-deficient anemia and yellow fever
Answer:
sickle cell anemia and malaria
Explanation:
Scientists believe the sickle cell gene appeared and disappeared in the population several times, but became permanently established after a particularly vicious form of malaria jumped from animals to humans in Asia, the Middle East, and Africa.
The two diseases have been studied together that provide evidence of evolution in humans is sickle cell anemia and malaria.
What is sickle cell mutation?
The sickle cell mutation is relevant to malaria because infection of a red blood cell with the malaria parasite leads to hypoxia. In individuals of the AS genotype such blood cells sickle and are then eliminated by macrophage cells of the body’s immune system, lessening the burden of infection (Luzzatto, 2012). Carriers of the sickle cell trait are particularly resistant to severe malarial episodes; they are less resistant to mild cases. The mechanism by which carriers are protected from malaria is different than the acquired immunity that both AA and AS individuals achieve following repeated exposure to the disease.
The benefit that possessing a single copy of the sickle cell gene conveys counterbalances the biological cost incurred when homozygous SS children are stricken with sickle cell disease. An individual of the AS genotype is more likely to reach adulthood than is an individual of the AA genotype, but the former is also more likely to see his/her child die of sickle cell disease. This is known as a heterozygote advantage or balanced polymorphism. As shown more formally below, the stronger is the pressure of malaria on survival, the more advantaged are individuals who carry the S gene, and in equilibrium, the higher the percentage of the population who will be carriers. Indeed, it was the correlation of high prevalence of the sickle cell gene and the presence of malaria that first led scientists to understand the protective role of the sickle cell mutation (Kwaitkowski, 2005). As will be seen in the next section, the underlying genetic mechanism by which the sickle cell trait is transmitted provides a means of mapping sickle cell prevalence into an estimate of the mortality burden of malaria.
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A student is looking for evidence that spindle fibers are separating
chromosomes during cell division. Which cell is the student looking for
below?*
Which of the following is most likely to happen if data from a scientific
experiment are collected improperly?
O A. The hypothesis will be disproved.
B. The scientist will be discredited.
C. New discoveries will be made.
D. The conclusions will be inaccurate.
18. Which process is most likely involved in the change in red blood cell volume in this experiment? A. phagocytosis B. cyclosis C. osmosis D. hydrolysis
Answer:
C. osmosis
Explanation:
Benda langit yang mengelilingi Matahari, berkumpul pada lintasan yang dinamakan sabuk asteroid dan mengandung sedikit logam adalah
Answer:
English please I can't understand
I'm sleepy, hot, and my body feels heavy. Is there something wrong?
Answer:
fatigue
Explanation:
I'm sorry to break it to you, but these are some serious symptoms, and you definitely shouldn't ignore them. You're going to die, my friend! Say your prayers, and start digging your grave...
State the difference between poultry and poultry keeping
Answer:
I don't know what Poultry keeping is but Poultry is the group name for all domesticated birds used for meat, eggs, or feathers. Poulry are also referred to as birds and fowl. These birds have wings, backbones, and feathers; some can even swim.
Explanation:
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Hurricanes and severe storms can lead to flooding. Homes are damaged from rising water. The water can enter the home through broken doors, windows, and roofs. Homeowners need to quickly remove the standing water. Which answer is least related to a homeowner quickly working to achcieve a healthy home?
A. Limiting human and pet parasites
B. Removing mosquito and insect larvae
C. Preventing the growth of mold and mildew
D. Settling home and medical insurance claims
Answer:
I would say that the answer is A :)
Explanation:
Which scientist created the most modern classification hierarchy that we use today? Aristotle Linnaeus Woese Whittaker
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Answer:
Linnaeus
Explanation:
Answer:
Linneaus
Explanation:
Linnaeus is responsible for taxonomy, the most modern classification of heirarchy we use today.
Which are characteristics of all bacteria? Check all that apply. NO LINKS
1. They lack a nucleus.
2. They have a nucleus.
3. They eat other organisms.
4. They make their own food.
5. They are eukaryotes.
6. They are prokaryotes.
Answer:
1. They lack a nucleus
4. They make their own food
6. They are prokaryotes
Explanation:
Someone help me please thank you lol!
all
the
1. Which processes would both unicellular
and multicellular organisms perform?
A. Eating and finding shelter
Remove waste and make their own
food
C. Grow and reproduce
Talking and breathing
Which would be true of sexual reproduction?
a
increases survival rate
b
involves one parent
c
increases genetic diversity
d
produces identical offspring
Answer:
c increases genetic diversity
Explanation:
Answer:
C. increases genetic diversity
Explanation:
First, by process of elimination: sexual production doesn't necessarily increase survival rate, it can, but not always. Sexual reproduction involves two parents, so b is wrong. And sexual reproduction doesn't produce identical offspring, because it's mixing the genes from both parents, do d is wrong. That only leaves c, with two parents, the gene pool is always expanding, and with less chance of mutation
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In seals, long whiskers (W) are dominant over short whiskers (w). What would be the phenotype ratio if the genotype ratio was 2 ww:1 ww?
short whiskers and short whuskers
which diseases are caused by deficiency of vitamin c
Answer:
scurvy is caused due to the deficiency of vitamin c
Explanation:
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Which system includes all life on Earth?
A biosphere
B cryosphere
C geosphere
D hydrosphere
Answer:
Biosphere
Explanation:
contain all the planets living things
how you know that horses are related to other animals?
Answer:
their bone structure
Explanation:
Horses belong to a group of mammals with an odd number of toes. That rules out mammals with two toes, or "cloven hooves," like goats, pigs, cows, deer, and camels. So who are the other odd-toed, plant-eating animals? Most members of this group, known as perissodactyls, are extinct.
Which would a chemoautotroph use to produce energy?
What is the connection between plants and photosynthesis?
Answer:
plants use photosynthesis to synthesize glucose (their form of energy) with their chloroplasts
Explanation:
Inside
Outside
0
10
20.30
50
60
30
80
90 100
Time
(minūtes)
Change in
mass 19
6
0
3
2
9
33:
39
N
1.5.1
(10)
Plot a line graph of these results.
List TW nyimnmental factors that sould have caused the greater change
12
Answer:
The North produced 17 times more cotton and woolen textiles than the South, 30 times more leather goods, 20 times more pig iron, and 32 times more firearms. The North produced 3,200 firearms to every 100 produced in the south
The North produced 17 times more cotton and woolen textiles than the South, 30 times more leather goods, 20 times more pig iron, and 32 times more firearms. The North produced 3,200 firearms to every 100 produced in the south
Yuki has a bowl of ice. She places the ice in a warm room and watches as it melts into liquid water. Yuki then places the liquid water over a Bunsen burner and heats it until it vaporizes. Explain what happens to the water molecules in Yuki's experiment; from the beginning to the end of the experiment.
Answer:
ice is a solid.When heat is added it turns into a liquid,its a reversible change.As regarding to the water moleculesWhen water is heated, it expands, or increases in volume. When water increases in volume, it becomes less dense. As water cools, it contracts and decreases in volume. When water decreases in volume, it becomes more dense. For samples of water that have the same mass, warmer water is less dense and colder water is more dense.Im not sure if this helps but try it out :)
What is the relationship between DNA mutations and the disorders? Disorders:Hemophila,Beta thalassemia, and Sickle Cell Disease
Answer:
disorders are caused by mutations of these genes
Explanation: