Answer:
1. D- Within cultures that rely on milk-producing animals, individuals who tolerated lactose had a survival advantage.
2. B- Genetic drift is the random increase or decrease of certain genes in a population; natural selection is not random.
3. A- An interferon activates the body's immune system response to a virus.
4. D- Each persons immune system employs different tactics to get rid of the virus.
5. D- yes, because mutated viruses are able to infect more hosts.
i just did this test, 100% with these answers
1. The correct option D Within cultures that rely on milk-producing animals, individuals who accepted lactose had a survival advantage.
2. The correct option B Genetic drift is the random increase or decrease of certain genes in a population; natural selection is not random.
3. The correct option A An interferon activates the body's immune system response to a virus.
4. The correct option D Each person's immune system employs different tactics to get rid of the virus.
5. The correct option D yes, because mutated viruses are able to infect more hosts.
Define:1. Genetic Drift2. Natural Selection Genetic Drift:Genetic drift is a means of evolution. It refers to random changes in the commonnesses of alleles from generation to generation due to chance events.
Genetic drift can cause features to be dominant population. The effects of genetic drift are most pronounced in small populations.
Natural SelectionNatural selection is the process in nature by which organisms better adapted to their environment tend to survive and reproduce more than those less adapted to their environment.
Thus, these are the correct option.
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Which structures in the cell are protiens assembled in?
I NEEEEEEDDDD HELPPPP PLEASEEEEEEEEE
Answer:
its 50%
Explanation:
I think I hoped I helped
Good luck you can do it!
the process that decreases the number of body cells is called
cell division
apoptosis
Answer:
2 because it decreaces the number of cells
Explanation:
can someone please help me
WILL MARK YOU BRAINLIEST !!
Answer:
The answer is A.Primary succession
Explanation:
Primary succession is an ecological succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life (because of recent lava flows, newly formed sand dunes, or rocks left from a retreating glacier).
Answer:
a. primary succesion
Explanation:
What are nucleotides in a stand of DNA that do not code for proteins called?
a. Non Sense Nucleotides
b. Waste Code
c. Non Coding DNA
d. Ribonucleic Byproduct
Answer:
C
Explanation:
Answer:
C.Noncoding DNA
Explanation:
''Noncoding DNA does not provide instructions for making proteins. Scientists once thought noncoding DNA was “junk,” with no known purpose. However, it is becoming clear that at least some of it is integral to the function of cells, particularly the control of gene activity.
-MedlinePlus Geneticsmedlineplus.gov › genetics › understanding ›basics ›
''It is important to note that DNA damage, in and of itself, does not necessarily lead ... type of point mutation, called a nonsense mutation, converts a codon encoding an ... Because codons are triplets of nucleotides, insertions or deletions in groups of ... Beneficial mutations generally code for new versions of proteins that help...''
– Chemistrywou.edu › courses › online-chemistry-textbooks › chap.
''Non-coding DNA sequences do not code for amino acids. Most non-coding DNA lies between genes on the chromosome and has no known function. Other non-coding DNA, called introns, is found within genes. Some non-coding DNA plays a role in the regulation of gene expression.''
- Institutewww.genome.gov › genetics-glossary › Non-Coding-DNA
Which of the following factors most likely limits the plant population growth in the desert?
А
the number of herbivores
B
the amount of sunlight
o
the availability of water
D
the availability of land
Answer:
C
Explanation: Because to grow plants need the basic stuff like water and sunlight but in the desert you have a great amount of sunlight but you have much water.
Individuals with one form of lactose intolerance do not produce the
enzyme lactase because the gen coding for the production of lactase is
turned off in their cells. As a result, which of the following processes
does not occur for the gene?
Select one:
a. Transcription
b. Hydrogenation
c. Replication
d. Hydrolysis
Answer: Transcription - A
Explanation:
This problem is talking about the lac operon and the gene expression of lac operon. If the gene is turned off, then transcription, the generation of mRNA won't occur.
Examine the photograph. Identify at least three natural resources being used. Describe where each natural resource came from.
Three natural resources being used here are air, water, sunlight.
What is a natural resource ?Natural resources can be defined as the resources that exist (on the planet) independent of human actions.
What is the importance of natural resources ?Natural resources are available in fixed quantity and they are non – renewable.
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Answer:Three natural resources being used here are air, water, sunlight.
Explanation:
what is the term used to descibe the build -up of a higher concentration of H + on one side of the inner membrane of the mitochondrion than on the other side during the electron transport chain?
Answer:
espanhis plis plisplisplisplis
Quais são as principais propriedades de uma onda? Descreva cada uma delas explicando com suas palavras de que forma cada propriedade interfere na natureza das ondas. (essa resposta é grande) * me ajudem ai gente urgente :(
Answer:
can you translate this is English?
These clouds appear fibrous or curly. They are high, thin, white, feathery clouds made of ice crystals. They are associated with fair weather, but they can indicate approaching storms too. Which type of cloud is this?
Answer: These are known as Cirrus clouds.
Explanation:
What does frozen seas mean in a poem
O pathway
O stillness
O coldness
O water
Help please and thank you
Answer:
The First one is correct!! ♥️
Answer:
A crossing over introduces variety by producing different combinations of alleles
Examine the model of a viral structure shown here. Select all of the choices that accurately compare and contrast the structures of viruses and cells.
A) both cells and viruses have DNA/RNA
B) both cells and proteins have molecules
C) viruses have enzymes for DNA replication, where cells do not
D) both cells and proteins have capsid structures surrounding their genomes
E) cells have specialized organelles, where viruses do not contain these structures
Answer: A , B & E
Explanation:
someone answerrrr plsss
Answer:
I think it's mutation
Explanation:
There is higher abundance of lighter elements in the universe than heavier elements.
which sourfe of evidence supports that statement
Cosmic Microwave Background Expanding Universe Universe Composition
Answer:
Due to its formation in the supernova nucleosynthesis.
Explanation:
The higher abundance of lighter elements in the universe than heavier elements occurs due to its formation in the supernova nucleosynthesis. The lighter elements such as hydrogen and helium are present in abundant amount and formed in supernova nucleosynthesis as compared to other heavier elements which are formed through other events. The lighter elements occupy less volume and space as compared to heavier elements which is also a reason for their abundance.
Animals are a more complex life form than plants. What did plants do that allowed for animal life to develop? *
plants make oxygen which animals use to breathe
plants make carbon dioxide which animals use to breathe
plants make water which animals use to swim in
plants make sunlight which animals use to make vitamin D
I'm not sire if it's a single question answer but it looks like it's "A"
humans and animals make carbon dioxide which plants take in
plants don't make water, the water cycle "makes" it
and plants don't make vitamin D or sunlight
What shape is this galaxy??
Answer:
a circle
a sphere
Explanation:
PLS HELP IM NOT SMART
Answer:
has less rain
Explanation:
Which of these is a description of climate?
A. It was 98 degrees outside yesterday.
B. The wind speed right now is 5 miles per hour
C. San Jose has cool winters.
D. Last week we had 1 inch of rain.
Answer:
c
Explanation:
According to the food web below, what would the leopard seal be?
Answer:
primary
Explanation:
Answer
tertiary consumer I think
Explanation:
what is the step in the cell cycle that insures genetic continuity
Answer:
As mitosis ends, each developing daughter cell receives one set of chromosomes. The nuclear membranes return as the cell divides through the process of cytokinesis. In this way, mitosis ensures genetic continuity across generations of cells.
Iceland is a natural laboratory for observing sea-floor spreading. Here, the rate of plate motion is about 2.5 cm per year. Predict how Iceland will change in one million years as a result of plate tectonics. Explain your reasoning.
Answer:
25000 meters.
Explanation:
Iceland will change into parts in one million years as a result of plate tectonics. If the rate of plate motion is about 2.5 cm per year so after one million years the Iceland divides and moves away from one another at a distance of 25000 meters so we can say that both Islands are present at different locations and at a large distance from one another.
AS per the observation, change in one million years as a result of plate tectonics in the islands the correct answer is 25000 meters.
Iceland will extrude into components in 1,000,000 years because of plate tectonics. If the charge of plate movement is ready 2. 5cm in line with 12 months so after 1,000,000 years Iceland divides and movements far from each other at a distance of 25000 meters so we are able to say that each island is a gift at distinctive places and at a big distance from each other.
What is Iceland?Iceland is well-known for being known as the Land of Fire and Ice due to its volcanoes and glaciers. It is dotted with herbal wonders including The Blue Lagoon and Dettifoss Waterfall. Iceland is likewise regarded for its wealthy cultural history, Norse mythology, folklore, and having no reputable own circle of relatives' names.
Thus it is clear that Iceland will change in one million years as a result of plate tectonics by 25000 m.
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Which energy conversion occurs in the cells of an animal, such as the
chipmunk shown in the photograph?
A. Kinetic energy
Nuclear energy
B. Light energy Chemical energy
O C. Kinetic energy → Potential energy
O D. Chemical energy → Potential energy
The energy conversion that occurs in the cell of an animal, such as the chipmunk, is Chemical energy → Potential energy.
What is the conversion of energy?Energy is neither created nor destroyed, it is just converted into another form of energy. This is called conversion of energy.
Here the food has chemical energy and which will be converted into potential energy in the stomach of the chipmunk.
Thus, the correct option is D. Chemical energy → Potential energy
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The molecules of DNA are
__
so that each cell gets the same directions.
Answer:
Nucleotides
Explanation:
DNA structure
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code
whould you be able to observe the DNA of a single cell?
Answer:
All living things have DNA: the chemical instructions on how to make a living thing, from humans to strawberries. Many people assume that because DNA is so small, we can't see it without powerful microscopes. But in fact, DNA can be easily seen with the naked eye when collected from thousands of cells.
Explanation:
Complete the equation for cellular respiration:
________ + sugar → ________ + water
oxygen, carbon dioxide
carbon dioxide, oxygen
ATP, light energy
chlorophyll, mitochondria
Answer:
the first choice is correct.
Explanation:
the cellular respiration equation is:
sugar + oxygen -> carbon dioxide + water
What is an enzyme's function?
Answer:
An enzyme is a type of protein found within a cell. Enzymes create chemical reactions in the body. They actually speed up the rate of a chemical reaction to help support life.
relate the temperature of a gas to the kinetic energy of its particles.
A. as the temperature extends, the kinetic energy of the particles decrease
B. as the temperature increases, the kinetic energy of the particles increases
C. as the temperature decreases, the kinetic energy of the particles increases
D. As the temperature intensifies, the kinetic energy of the particles decreases
Answer:
B. as the temperature increases, the kinetic energy of the particles increases
Which of the following best describes the flow of energy in a food web that contains the following organisms: fish, zooplankton, bacteria, and phytoplankton?
Answer:
D
Explanation
no need to thank me