According to Lamarck, the
characteristics of organisms changed
because of:
A. extinction of competitors
B. a desire or need for that trait
C. special acts of creation
D. genetic mutation
E. chance

Answers

Answer 1

Answer:

Maybe..........B?.............

Explanation:


Related Questions

Explain if you are bothered by working conditions at Foxconn plants. Do you worry that the production of a phone might have contributed to a death of a worker

Answers

Answer:

Yes.

Explanation:

Yes, I am bothered by working conditions at Foxconn plants and do worry about the production of a phone that might have contributed to a death of a worker. If the working conditions are not satisfactory and the life of the worker are in danger so I worry about the lives of workers that work at Foxconn plants because of unsafe condition of work and stop the workers from working until safety measures should be implemented.

why do you think Harvey placed the sea urchin cells in a hypersonic solution?​

Answers

Harvey placed the sea urchin cells in a hypersonic solution in order to see the behaviour of the cell in the hypersonic solution.

What Harvey placed the sea urchin cells in a hypersonic solution?​

In 1940 Ethel Brown Harvey evolve a technique for separating embryonic sea urchin cells. She took a pair of embryonic cells to develop from the first cell division after Harvey's fertilization. She settles the pair of cells in a hypertonic solution, carrying double the amount of salt as that contained in seawater. Most sea urchins produce a group of early embryonic cells which is known as micromeres. Small blastomeres Harvey that form by unequal cell division at the vegetal pole of the early embryo. Harvey Sub-Sea is the first that indicated Maritime Labor Convention compliant.

So we can conclude that Ethel Brown Harvey developed a technique for dividing embryonic sea urchin cells.

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3. The evolutionary pathways of ten different species are represented in the diagram below.
E
D
F
Time
G
Н,
B
Which two species are the most closely related?
A and F
G and
E and I
C and D

Answers

Answer:

C

Explanation:

when counting the number of organisms that differentiate between e and I, this answer gives the smallest number of organisms

What are the parts of the chloroplast? What does each part do?

Answers

The chloroplast has an inner and outer membrane with an empty intermediate space in between. Inside the chloroplast are stacks of thylakoids, called grana, as well as stroma, the dense fluid inside of the chloroplast. These thylakoids contain the chlorophyll that is necessary for the plant to go through photosynthesis.

A genetic trait might be caused by incomplete dominance if:
A. red-, white-, and pink-flowered plants grow from the seeds of a
blue-flowered plant.
B. pinks, white, and red-flowered plants grow from the seeds of a
pink-flowered plant.
C. two plants with red flowers are the parents of plants with either
red flowers or white flowers.
O D. two plants with red-and-white flowers are the parents of plants
with either white flowers or pink flowers.

Answers

B. Pinks white and red flowered plants grow from seeds of a blue one

describe how insect pollinated flower are adampted to pollination

Answers

Answer:

Pollen grains are also adapted for insect pollination. Some pollen grains are hairy or spiky, and others are sticky, so they attach to the insect. The anthers dangle in the breeze, and the pollen is blown away. The pollen grains are very small and light so they are easily carried on the wind.

Explanation:

hope it helps

Mutations cause changes in _____.

A) elements

B) proteins

C) compounds

D)essential nutrients

Answers

Answer: A

Explanation:

The organ that controls your internal clock is called...​

Answers

Answer:

The circadian biological clock is controlled by a part of the brain called the Suprachiasmatic Nucleus

Explanation:

That should be right

Question 20 of 34 Which of the following do all living things share? O A. All living things are made of the same elements. O B. All living things think. ОО C. All living things breathe oxygen. O D. All living things move.​

Answers

Answer:

All living things think.

Explanation:

all living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.

what defies a species?

Answers

Answer:

their color, their size, their life I guess

You have a beautiful garden at home. On Sunday, you start budding your rose plant to make few more samples of rose plants to plant in the garden. Can you categorize how this scenario could be represented by classes and instances?

Answers

Answer:

It is possible to make this categorization as follows:

Roses = Class

Rose samples = instances

Explanation:

In a very direct and objective way, we can state that classes are models that define how a given situation will be handled, which methods will be used to manage it and the objectives that will be established in that situation. Instances, on the other hand, are elements taken from the interior of classes, which contain factors that make them up. Based on this, we can determine that, in the case of the above question, roses are classes and rose samples are instances.

Which of the following is not an outcome for children who are food insecure?

A. Iron defeciency

B. Delayed cognitive development

C. Increased energy

Answers

Answer:

B.

Explanation:

hope it help

plss brainlys me

Delayed cognitive development.

Intellectual disability is a term used when a person has certain limitations in mental functioning and in skills such as communicating, taking care of him or herself, and social skills.

What is cognitive development?Cognitive development is how a person perceives, thinks, and gains understanding of their world through the relations of genetic and learning factors. There are four stages to cognitive information development.

They are:-

Reasoning,Intelligence,Language, Memory.

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What is the meaning of botany?

Answers

Answer:

the scientific study of the physiology, structure, ecology, classification, and economic importance of plants.

The scientific study of plants

examples of receptors​

Answers

Answer:

Chemoreceptors detect the presence of chemicals.

Thermoreceptors detect changes in temperature.

Mechanoreceptors detect mechanical forces.

Photoreceptors detect light during vision.

More specific examples of sensory receptors are baroreceptors, propioceptors, hygroreceptors, and osmoreceptors.

Explanation:

Answer:

Photo-receptors detect light during vision.

Explanation:

Please help!!

Why doesn't cloud formation take
place until the dew-point temperature is
reached?

Answers

Answer:

Clouds form when air reaches its dew point, the temperature when the air is saturated. This can happen in two ways. First, the air temperature can stay the same while the humidity increases. This is common in locations that are warm and humid.

Explanation:

Answer: The moisture in the cloud affects the weather.

Explanation:

thats why

explain the origin of lassa fever​

Answers

Answer:

Lassa fever (LF) is an acute and sometimes severe viral hemorrhagic illness endemic in West Africa. The disease was first recognized in Nigeria in 1969. Humans contract Lassa virus (LASV) primarily through contact with contaminated excreta of the rodent Mastomys natalensis, which is the natural reservoir.

Explanation:

Lassa fever is an acute viral illness that occurs in west Africa. The illness was discovered in 1969 when two missionary nurses died in Nigeria. The virus is named after the town in Nigeria where the first cases occurred

Which of the following best explains why the Galápagos islands are still used for evolution research today?

A) The diversity in environments on each island provides many opportunities to study how related organisms
have adapted over time.

B) The species diversity on the islands is one of the largest in the world, allowing for many examples of
evolution

C) The islands are easy to access from the mainland, and the climate is particularly well suited for research all
year long

D) Most species found on the islands are only found in this geographic area, which allows researchers to easily
isolate their studies.

Answers

Pretty sure it is D. Which makes it easier to study a group of species and find out what makes them flourish in that environment.

The following best explains why the Galápagos islands are still used for evolution research today most species found on the islands are only found in this geographic area, which allows researchers to easily isolate their studies.

Galápagos are a extraordinary vicinity to observe evolution, still, because, remarkably, numerous islands and their population are near being withinside the completely herbal state, with very little have an impact on of human activities,” says the evolutionary biologist and Princeton University professor emeritus Peter Grant.

What is unique of Galápagos islands?

Six hundred miles off the coast of Ecuador lie the volcanic islands of the Galápagos, well-known for a wealth of particular flora and animals discovered nowhere else withinside the world. The Galápagos Islands have been the supply of Darwin's concept of evolution and stay a valuable residing laboratory for scientists today.

Thus it is well explained.

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Biological concepts began with the Greeks,romans,Egyptians, or Americans?

Answers

Answer:

Egyptians

Explanation:

The earliest of roots of science, which included medicine, can be traced to ancient Egypt and Mesopotamia in around 3000 to 1200 BCE.[14][15] Their contributions later entered and shaped Greek natural philosophy of classical antiquity

Organic compounds are primarily
created from one element. Which
element forms the basis of organic
compounds?

Answers

carbon is the basis of organic compounds


The base of the flower where it is attached to the rest of the plant is the:
1)pistil
2)receptacle
3)fruit

Answers

Answer:

The base of the flower where it is attached to the rest of the plant is the:Receptacle

Peduncle: The stalk of a flower. Receptacle: The part of a flower stalk where the parts of the flower are attached.

Explanation:

Flowers may be directly attached to the plant at their base (sessile—the supporting stalk or stem is highly reduced or absent). The stem or stalk subtending a flower is called a peduncle.

Answer:

receptacle

Explanation:

it is that part of the flower to which the stalk is attached to.it is small and found at the centre of the base of the flower

21. What determines the kind of genes an organism
possesses?

Answers

Answer:

The kind of genes an organism possesses is determined by the order of the nucleotide bases in the organism's DNA.

Answer:

The kind of genes an organism possesses is determined by the order of the nucleotide bases in the organism's DNA. ... The order of bases as you go down the rungs of the ladder determine what genes an organism will have, and therefore, what traits it will have.

Explanation:

Fun facts:

Genes carry the information that determines your traits which are features or characteristics that are passed on to you — or inherited — from your parents. Each cell in the human body contains about 25,000 to 35,000 genes. ... And chromosomes are found inside cells. Your body is made of billions of cells.

The DNA template strand of a gene near a promoter reads 5'-TAGAACGCCTCGAAATTTCATACT-3' The amino terminus of the encoded protein whose translation starts in this region is:

Answers

Answer:

The N-terminal aminoacid is Metionin.

Explanation:

Before answering the question, let us remember the meaning of the term amino terminus. Terminus refers to the extremes of the polypeptide. During translation, rRNA and tRNA read mRNA in 5´ to 3´ direction. The first extreme to be translated carries the amino-terminal group, while the other extreme carries the carboxy-terminus group.

Conventionally, proteins are written from left to right, beginning by the N-terminal extreme carrying the free amine group, and ending by the C-terminal extreme carrying the carboxyl free group. However, we need to know that the free amine group actually places at the end of a protein.

Transcription:

Transcription occurs in the nucleus where the template DNI strand is read in direction 3´→ 5´ to build the mRNA molecule in direction 5´→ 3´.

template DNI strand  ⇒   5'-TAGAACGCCTCGAAATTTCATACT-3'

                      mRNA   ⇒  3´-AUCUUGCGGUGCUUUAAAGUAUGA- 5´

Translation:  

Translation occurs in the cytoplasm. rRNA and tRNA read mRNA in the direction 5´→ 3´ to build the protein.

Protein synthesis initiates in the AUG start codon -Metionin-, and ends when reaching either of the stop codons UAA, UAG, UGA.  

The first portion of mRNA is not read nor translated. This is the untranslated region (UTR), placed before the strat codon.

mRNA   ⇒  3´-AUCUUGCGGUGCUUUAAAGUAUGA- 5´

Remember that transcription occurs from 5´ to 3´ extremes, so we need to read the codons in this direction too, beginning on the 5´ extreme.

First, we need to find the initiation codon: AUG coding for Metionin.

mRNA   ⇒  3´-AUCUUGCGGUGCUUUAAAGUAUGA- 5´

                                                                        Met

mRNA   ⇒  3´-AUCUUGCGGUGCUUUAAAGUAUGA- 5´

                                                                Lys  Met

mRNA   ⇒  3´-AUCUUGCGGUGCUUUAAAGUAUGA- 5´

                                                        Phe   Lys  Met

mRNA   ⇒  3´-AUCUUGCGGUGCUUUAAAGUAUGA- 5´

                                                 Arg  Phe  Lys  Met

mRNA   ⇒  3´-AUCUUGCGGUGCUUUAAAGUAUGA- 5´

                                        Gly  Arg  Phe  Lys  Met

mRNA   ⇒  3´-AUCUUGCGGUGCUUUAAAGUAUGA- 5´

                                Val  Gly  Arg  Phe  Lys  Met

mRNA   ⇒  3´-AUCUUGCGGUGCUUUAAAGUAUGA- 5´

                       Leu  Val  Gly  Arg  Phe  Lys  Met

The N-terminal aminoacid is then Metionin.

Why do we have to get the flu shot every year ?

Answers

Answer:

Because flu viruses evolve so quickly, last year's vaccine may not protect you from this year's viruses. New flu vaccines are released every year to keep up with rapidly adapting flu viruses.

What is an example of a symbiotic organism?

Answers

Answer:

The symbiotic relationship between an anemone (Heteractis magnifica) and a clownfish (Amphiron ocellaris) is a classic example of two organisms benefiting the other; the anemone provides the clownfish with protection and shelter, while the clownfish provides the anemone nutrients in the form of waste while also scaring

Explanation:

I asked the same question

The Milky Way galaxy looks like a band of light across the sky. Which observation would provide the best view of this band of light without a telescope

Answers

Answer:

The correct answer is - observing on any dark, clear night.

Explanation:

We and many other plants and our sun present in a galaxy, called the Milky Way as it appears as a milky band of light in the sky when you see it in a really dark clear area night.

It can be observed easily without the help of a telescope all it requires a dark but clear night without clouds. It looks like a hazy band or cloudy white or milky color band in the sky.

Click and drag the terms on the left to accurately complete the sentences on the right. Then, arrange the sentences from top to bottom in order of least common to most common.
T cells, B cells, lymph node, destroyed, macrophage, immune response, antigen presenting cell, bound to transport proteins
a) Infected or malignant cells are then _______ before they can do further harm to the body.
b) The antigen presenting cell displays the antigen to the _______.
c) The T cells initiate the ________ if the antigens are viral proteins or abnormal antigens.
d) The _________ encounters and processes the antigen.
e) With the antigen, the antigen presenting cell migrates to the nearest ____________.

Answers

Answer:

d) The antigen-presenting cell encounters and processes the antigen.

e) With the antigen, the antigen-presenting cell migrates to the nearest lymph node.

b) The antigen-presenting cell displays the antigen to the T cells.

c) The T cells initiate the immune response if the antigens are viral proteins or abnormal antigens.

a) Infected or malignant cells are then destroyed before they can do further harm to the body.

Explanation:

The antigen-presenting cells (e.g., dendritic cells, macrophages) are cells of the immune system that mediate cellular immune responses by processing and presenting antigens (i.e., peptides components of pathogens) to T lymphocytes. The antigen-presenting cells travel through lymphatic vessels from the site of infection to the lymph nodes where they present antigens to naive T cells, i.e., T cells that have matured but have not yet encountered their corresponding antigens. This presentation facilitates the clonal expansion of T cells that are specific for the antigen which acquire effector functions in order to destroy infected cells. This process is known as immune clearance and is associated with the apoptosis of antigen-specific T cells.

A partly full paint can has 2.75 liters of paint left in it. What is volume of the paint in cubic
centimeters?
(3)
A) 2.75 x 10-3 cm3
C) 275 x 10-3 cm3
E) 27.5 x 103 cm3
B)
2.75 cm
D)
2.75 x 103 cm​

Answers

Answer:

2.75 x 10³ cm³

Explanation:

Volume can be measured in both liters (L) and cubic centimeters (cm³), however,

1 liter = 1000cm³

According to this question, a partly full paint has 2.75 liters of paint left in it.

Since 1 liter = 1000cm³

2.75 liters = 2.75 × 1000

2.75 × 10³ cm³ is left.

Which of these is true for a fertilized egg?
O A. It has DNA from both parents.
B. It has a haploid number of chromosomes.
O C. It has DNA but no chromosomes.
.
D. It has too many chromosomes until it splits.

Answers

Answer:

A. DNA from both parents

Explanation:

without DNA there would not be fertility at all or any similarities with the parents

What are the sum of all life functions 

Answers

Answer:

Regulation, Control, Coordination, Growth, Nutrient, Nutrition, Homeotasis

Which of the following statements about the use of synthetic polynucleotides in cracking the genetic code is true?
a) Particular codons are generated in predictable ratios with random RNA polymers containing specific ratios of different nucleotides.
b) Poly(A) RNA directs the synthesis of only polylysine in vitro.
c) Three different amino acids are incorporated into peptides when synthetic polymers of only one nucleotide are used to synthesize the RNA primer.
d) The codon table was completed by using RNA polymers of defined sequences.

Answers

Answer:

a) Particular codons are generated in predictable ratios with random RNA polymers containing specific ratios of different nucleotides.

b) Poly(A) RNA directs the synthesis of only polylysine in vitro.

d) The codon table was completed by using RNA polymers of defined sequences.

Explanation:

A polynucleotide molecule is defined as the biopolymer which is composed of thirteen nucleotide monomers or more monomers which is covalently bonded in the chain.

While using the synthetic polyneuclitide in the cracking of the genetic code, the translation of a [tex]\text{poly(A) RNA tail}[/tex] that results in synthesis of the poly-lysine in the lab.

Some of the particular codons are produced by some specific ratios of a different nucleotides. This can be present in the different RNA polymers. Codon table includes the RNA polymers that contains nucleotides in some specific ratios.

Thus, the options (a), (b) and (d) are correct.

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Shawna is writing a paper for her science class, and she wants to include a list of luminous objects. These are objects that produce and emittheir own light. Objects that are not luminous, also called illuminated objects, only reflect light.Which list should Shawna add to her paper? Find the percent change and tell whether it is a percent decrease orincrease.Original amount: 30End amount: 45 What happens during Longstreets march which complicates the situation At Downunder Farms, Jamie is packing kiwi fruit in shipping crates. Each trayholds 58 kiwis, and he can put 6 trays in a crate. How many kiwis does thecrate contain when it is full?A. 64 kiwisB. 290 kiwisC. 348 kiwisD. 174 kiwis Not me sitting here with my AD.HD tryna not to mess around. Which data value has the highest frequency? The Federalist Papers were written byGroup of answer choicesMarshall, Jefferson, and Adams.Washington, Adams, and Jefferson.Madison, Hamilton, and Jay.Jefferson, Locke, and Montesquieu.Franklin, Washington, and Lee. Notice how brightly each bulb is lit and how much charge is flowing in each part of the wire. Without graphing, what can you say about the points (2.5, 1) and (6, 1) on the coordinate plane? Garida Co. is considering an investment that will have the following sales, variable costs, and fixed operating costs: Year 1 Year 2 Year 3 Year 4Unit sales 4,200 4,100 4,300 4,400Sales price $29.82 $30.00 $30.31 $33.19Variable cost per unit $12.15 $13.45 $14.02 $14.55Fixed operating costs $41,000 $41,670 $41,890 $40,100 This project will require an investment of $10,000 in new equipment. Under the new tax law, the equipment is eligible for 100% bonus deprecation at t = 0, so it will be fully depreciated at the time of purchase. 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