Answer:
faced a struggle for survival
Explanation:
The woolly mammoths became extinct, unlike the other species, because the woolly mammoths faced a struggle for survival due to changing of environmental conditions. Global warming is the main cause of extinction of woolly mammoth which destroy their habitats about 10,500 years ago. The environmental conditions are not favourable for them so they faced struggle for survival which causes extinction of woolly mammoth.
Which of the following is NOT a
piece of evidence that Darwin
used to support his theory of
evolution?
A. fossil record
B. similarities among different species
C. the amount of shared DNA between species
Fossil record is not a piece of evidence that Darwin used to support his theory of evolution.
What is the theory of evolution?Evolution is the process of change in all forms of life over generations, and evolutionary biology is the study of how evolution occurs. Biological populations evolve through genetic changes that correspond to changes in the organisms' observable traits.
Darwin proposed that species can change over time, that new species come from pre-existing species, and that all species share a common ancestor. In this model, each species has its own unique set of heritable (genetic) differences from the common ancestor.
The current evolutionary theories can be categorized as Darwinism and Lamarckism. Charles Darwin theorized Darwinism. He explained his theory of natural selection in his book, On the Origin of Species.
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Answer:A.fossil record
Explanation:
Which of the following cells undergoes mitosis?
a. Liver
b. Sex cells
C. Sperm
d. Gametes
Answer:
The correct answer is liver
What happens to the light intensity as you adjust the diaphragm? Explain your answer.
13. The atria (plural of atrium) are the receiving chambers while the
ventricles are the pumping chambers. *
True
False
Answer:
True
Explanation:
Which DNA strand represents the complementary base
sequence to the portion of a DNA strand represented
in the diagram shown? ?
Answer:
B
Explanation:
remember in DNA A always pairs with T and G always with C so remember as Apple Tree and Car Garage.
hope this helps:)
Which part of the brain controls balance?
Cerebrum
Cerebellum
Brain stem
None of the above
Answer:
Cerebellum
Explanation:
The cerebellum, in the back of the brain, controls balance, coordination and fine muscle control (e.g., walking).
Your friend believes Tom Cruise is an authority (or trustworthy source) on the topic of psychiatric medication. Evaluate the reliability and credibility of using Tom Cruise as a source.
Answer:
Tom Cruise is not a trustworthy source because he is an actor, and is not a trained professional who is properly educated about psychiatric medication.
Explanation:
hope this helps
Which of the following shows the levels of organization in correct order from simplest to most complex?
A. cells, organism, tissues, systems, organs
B. organism, organs, systems, tissues, cells
C. cells, tissues, organs, systems, organism
D. cells, organs, tissues, organism, systems
Answer: C
Explanation:
What is an organism made of one cell called
Answer:
Unicellular organisms
Explanation:
in garden peas, yellow seeds (y) are dominant to green seeds (y), and inflated pods (i) are dominant to constricted pods (i). suppose you have crossed yyii parents with yyii parents. draw the f1 punnett square and predict the expected f1 phenotype(s). list the genotype(s) of gametes produced by f1 individuals. draw the f2 punnett square. based on this punnett square, predict the expected phenotype(s) in the f2 generation and the expected frequency of each phenotype.
Complete question:
In garden peas, yellow seeds (Y) are dominant to green seeds (y), and inflated pods (I) are dominant to constricted pods (i).
Suppose you have crossed YYII parents with yyii parents.
Draw the F1 Punnett square and predict the expected F1 phenotype(s). List the genotype(s) of gametes produced by F1 individuals. Draw the F2 Punnett square. Based on this Punnett square, predict the expected phenotype(s) in the F2 generation and the expected frequency of each phenotype.Answer:
F1 phenotype ⇒ 100% plants heterozygous for both traits, expressing yellow seeds and inflated pods, YyIi. F1 gametes ⇒ YI, Yi, yI, yiF2 Phenotype ⇒ 9/16 are expected to be plants with yellow seeds and inflated pods, Y-I-3/16 are expected to be plants with yellow seeds and constricted pods, Y-ii3/16 are expected to be plants with green seeds and inflated pods, yyI-1/16 are expected to be plants with green seeds and constricted pods, yyiiExplanation:
Available data:
yellow seeds (Y) are dominant to green seeds (y) inflated pods (I) are dominant to constricted pods (i)1st Cross:
Parentals) YYII x yyii
Gametes) YI, YI, YI, YI yi, yi, yi, yi
Punnett square) YI YI YI YI
yi YyIi YyIi YyIi YyIi
yi YyIi YyIi YyIi YyIi
yi YyIi YyIi YyIi YyIi
yi YyIi YyIi YyIi YyIi
F1) 100% of the progeny is expected to be heterozygous for both traits, expressing yellow seeds and inflated pods, YyIi.
2nd Cross:
Parentals) YyIi x YyIi
Gametes) YI, Yi, yI, yi YI, Yi, yI, yi
Punnett square) YI Yi yI yi
YI YYII YYIi YyII YyIi
Yi YYIi YYii YyIi Yyii
yI YyII YyIi yyII yyIi
yi YyIi Yyii yyIi yyii
F2) Genotype
1/16 are expected to be YYII2/16 are expected to be YYIi1/16 are expected to be YYii2/16 are expected to be YyII4/16 are expected to be YyIi2/16 are expected to be Yyii1/16 are expected to be yyII2/16 are expected to be yyIi1/16 are expected to be yyiiPhenotype
9/16 are expected to be plants with yellow seeds and inflated pods, Y-I-3/16 are expected to be plants with yellow seeds and constricted pods, Y-ii3/16 are expected to be plants with green seeds and inflated pods, yyI-1/16 are expected to be plants with green seeds and constricted pods, yyiiHere we've got a condition, in which an inexperienced pea has traits that include the colour of the seed, and the nature of the pod, wherein the Yellow colour seed (Y) is dominant over the inexperienced colour seed (y), and the inflate pods (I) is dominant over the constricted pods (i).
When we make a pass among true-breeding mother and father having yellow colour seed, and inflated pods with true-breeding determine have inexperienced colour seed and constricted pods, then withinside the F1 technology we get -
The genotype of a true-breeding determines having a yellow colour seed, and inflated pOds=YY||.The genotype of a true-breeding determined to have inexperienced colour seed and constricted pods = yyii.A pass among YYII (Yellow, inflated) x yyii (Green, constricted).Gametes are made out of a mother and father having genotype YY|I=YI.Gametes are made out of a mother and father having genotype i = Yi.1st cross :
Parental YYII x yyii
Gametwes YI,YI,YI,YI yi,yi,yi,yi
Punnet square YI YI YI YI
yi YyIi YyIi YyIi YyIi
yi YyIi YyIi YyIi YyIi
yi YyIi YyIi YyIi YyIi
yi YyIi YyIi YyIi YyIi
100% pure progeny is obtained.
2nd cross :
Parents : YyIi x YyIi
Gametes: YI, Yi, yI, yi YI, Yi, yI, yi
F2) Genotype ratios :
1/16 are anticipated to be YYII 2/16 are anticipated to be YYli1/16 are anticipated to be YYii2/16 are anticipated to be Yyll 4/16 are anticipated to be Yyli2/16 are anticipated to be Yyii 1/16 are anticipated to be yyll2/16 are anticipated to be yyli 1/16 are anticipated to be yyiiPhenotype ratio :
9/16 are anticipated to be vegetation with yellow seeds and inflated pods, Y-I3/16 are anticipated to be vegetation with yellow seeds and constricted pods, Y-ii.3/16 are anticipated to be vegetation with inexperienced seeds and inflated pods, yyli1/16 are anticipated to be vegetation with inexperienced seeds and constricted pods, yyii.What is dominant ?Dominant is over the receive and thus it is the dominant character. Its include and genotypes for example red colour of flowers are dominant over white.
Thus it is clear that the above explanations are true.
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Every body cell in a frog contains the exact same genetic information. How can
there be different kinds of cells if they each have the same genetic information?
a. Cells cause mutations in the genetic material.
b. Different types of cells have different genes that are active.
C. Frogs can alter their DNA to have genes produce different proteins.
d. The genes undergo metamorphosis.
Answer:
b
Explanation:
These cells are different because they use the same set of genes differently.
What do you think? Are polar bears doomed to go extinct or do you think they will survive?
Answer:
Polar bears will go extinct by the end of the 21st century.
Explanation:
Polar bears live at the North Pole. Due to global warming, the ice at the poles is melting at an alarming rate. Soon there won't be any glaciers. Without the ice Polar bears will lose their home. The climate on Earth is becoming warmer day by day. So even if the Polar bears survive they will not be able to adapt to the warmer climate. Thus leading to their extinction.
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A student drew the picture of a human body system shown below
Pls help its due today
Answer:
your answer would be G
Explanation:
delivering oxygen and nutrients to organs and cells and carrying their waste products away.
Or, in another way, exchange gasses with the environment.
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Sara is learning about photosynthesis and cellular respiration in her science class. Which statement can Sara write that best explains the relationship between
these two processes?
O A. The chemical reactions of photosynthesis and cellular respiration could not take place without each other.
B. Photosynthesis and cellular respiration are chemical processes used in both animal and plant cells.
C. Plants use photosynthesis to produce food, while animals use cellular respiration to consume their food,
D. When cells do not have enough energy for respiration, they rely on photosynthesis.
oh
Answer:
The most suitable answer is C.
Explanation:
Photosynthesis is the process whereby plants manufacture their own food using water, carbon (iv) oxide and some other minerals in the presence of sunlight while cellular respiration is the oxidation (or breakdown) of substances in the mitochondria (site of cellular respiration) in living cells.
what is a chromosome made of
Answer:
Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA)
Explanation:
. Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique. The term chromosome comes from the Greek words for color (chroma) and body (soma).
Explanation:
How do heterotrophs get their source of glucose?
Answer:
By consuming plants and animals.
Explanation:
Since plants are autotrophs, they absorb the sun's energy through photosynthesis and make glucose. herbivores (plant eating heterotrophs) then consume these plants and gain energy from the glucose and further up the food chain carnivores consume herbivores and also gain a bit of glucose from them.
HELP A BROTHER OUT PLEASE
Answer:
A
Explanation:
I believe its a if I’m wrong plz do tell me! :D
Answer:
I think the answer is A
Explanation:
because the mitochondria is the power station of the cell and its energy produce within the mitochondrian is used for the metabolic activities of the cell
Canidae defines which taxon for both gray wolves and dogs?
A.kingdom
B.genus
C.phylum
D.family
A small 50-kilogram canoe is floating downriver at a speed of 3 m/s. What is the cance's kinetic energy?
A.) 450J
B.) 225J
C.) 7500J
D.) 16.7J
Select 2 sentences that are correct.
Answer:
option 3 and 5
hope helps you
have a great day
Answer:
Option 3 and 4
Explanation:
All primates share a common ancestor. We share ancestry with primates, but we did not evolve or descend from them. We simply have a close evolutionary relationship.
Which nucleotide bonds with
Cytosine in RNA?
A. Thymine
B. Uracil
C. Adenine
D. Guanine
Answer:
B
Explanation:
In DNA cytosine bonds with thymine meanwhile in RNA uracil bonds with thymine instead.
Answer:
D. Guanine
Explanation:
The run off of which of these can result in cultural eutrophication
sulfur and dihydrogen monoxide
Diffusion is the spontaneous movement of a substance from an area of _______ concentration to an area of _______ concentration.
A
high; similar
B
higher; lower
C
lower; higher
D
low; similar
Answer:
The answer is B
Explanation:
Answer:
(B ) higher; lower.
Explanation:
Diffusion is the spontaneous movement of a substance from an area of higher concentration to an area of lower concentration.
Assume that the sequence of bases in one strand of DNA molecule is a GACTTACGTACC what is the sequence of complementary bases in the other strand of DNA during DNA replication
state whether volcanoes are evenly distributed over earth’s crust or concentrated in specific areas
Answer: Concentrated in certain areas
Explanation:
Volcanoes are usually formed as a result of collisions or other activity between plates at plate boundaries.
As a result, they are more usually concentrated in zones where there is more plate activity such as at the edges of continents, on islands and beneath the seas in certain areas because this is where plates usually collide with each other.
If someone called you a diploid, why would you not be offended?
Answer:who knows
Explanation:
The process that uses carbon dioxide and
water to make glucose and oxygen is called:
A) photosynthesis
B) cellular respiration
C) all of the above
D) none of the above
Answer:
A
Explanation:
Plants use carbon dioxide taken from the environment and water from the soil to carry out photosynthesis and the products are glucose and oxygen.
It is recommended that children eat foods high in calcium and iron as a way to reduce the accumulation of lead in their cells and enzymes. Explain why this is a scientifically valid recommendation.
Why a stent is used in the treatment of atherosclerosis in a coronary artery
The stent holds open the narrowed arteries to allow adequate blood to flow to the heart.
What are 2 similarities and 2 differences between photosynthesis and cellular respiration?
Answer:
Photosynthesis and respiration are biological reactions that complement each other in the environment. Both photosynthesis and cellular respiration cannot occur without the other. However, there are differences between photosynthesis vs. cellular respiration. Photosynthesis involves the use of energy from sunlight, water, and carbon dioxide to produce glucose and oxygen, whereas cellular respiration uses glucose and oxygen to produce carbon dioxide and water.
Respiration and photosynthesis are biological reactions in the environment that complement each other. Both are similar reactions that occur in a specific manner. In the process of respiration, oxygen and glucose yield water and carbon dioxide, while carbon dioxide and water yield glucose and oxygen during the process of photosynthesis.
Explanation:
Cellular Respiration
Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate (ATP), and then release waste products. The reactions involved in respiration are catabolic reactions, which break large molecules into smaller ones, releasing energy because weak high-energy bonds, in particular in molecular oxygen, are replaced by stronger bonds in the products. Respiration is one of the key ways a cell releases chemical energy to fuel cellular activity. The overall reaction occurs in a series of biochemical steps, some of which are redox reactions. Although cellular respiration is technically a combustion reaction, it clearly does not resemble one when it occurs in a living cell because of the slow, controlled release of energy from the series of reactions.