Answer:
B
Explanation:
Some mutations can be harmful or helpful depending on the environment.
What is a fixed allele?
A. An allele that mutates with each generation
B. An allele that is found on many genes
C. An allele present in all members of a population
D. An allele that forbed by adaptive radiation
Answer:
A fixed allele is an allele that is the only variant that exists for that gene in all the population
Explanation:
A nonrenewable resource that developed from the remains of ancient plants that lived in large swamps millions of years ago is:
A. Coal
B. biomass
C. solar
D. Nuclear
Answer:
★ A nonrenewable resource that developed from the remains of ancient plants that lived in large swamps millions of years ago is COAL
Explanation:
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A student conducts an experiment where he places a light source below a plant. Over a three week time period he observes the plant's growth. Which of the following would he observe at the end of the three weeks.
Answer:
This question lacks options, the options are:
A). Roots would grow up out of the pot and then down towards the light.
B). The plant stem would grow up and roots would grow down.
C). The plant would start to bend over and grow downwards toward the light.
D). The plant would wilt and die.
The answer is C
Explanation:
This question is describing an experiment conducted to test the effect of LIGHT on plants movement, a phenomenon called PHOTOTROPISM. Phototropism is the response of a plant towards a light source.
According to this experiment, a light source is placed below a plant and observed over a three-week time period. At the end of three weeks, the experimenter will observe that "the plant would start to bend over and grow downwards toward the light" because the plants strictly require light to photosynthesize and grow, hence, it will respond by moving in the direction of the available light source.
The growth and the development of the plant parts towards the stimuli source are called tropism. The plant will bend downwards towards the light source.
What is phototropism?Phototropism is the phenomenon in which the parts of the organisms turns and starts growing in the direction of light sources like the sun or artificial light that acts as the external stimuli.
In the experiment, the light source acts as stimuli for the plant and the plant growth is the response. In the experiment the light source is kept down and acts as a stimulus for the plant, in return, the plant bends over and grows in the downwards direction.
Therefore, option C. plant will bend over and grow downwards.
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The average temperature in the warmest month is less than _____ °C (_____°F). The
temperature range throughout a year is large, from _____°C (_____°F) to _____°C (_____°F).
Answer:
The average temperature in the warmest month is less than 10°C (50°F). The temperature range throughout a year is large, from 0°C (32°F) to 26°C (78°F).
Compare and contrast kinetic and potential energy.
Answer:
Potential energy is when something has the potential to move. Kinetic energy is when something is moving
Answer:
They’re both energies, kinetic is moving, potential is potential of movement which means it’s not moving
Explanation:
What kind of waste is shown in the photograph?
Answer: that’s is e waste
Two populations of a species of flightless bird became separated by a river and the birds became two different species. How would scientists be able to discover that the two species of birds share a common ancestor? Scientists can look for similarities in - a . body coverings b. genetic similarities c. food choices d.mating rituals.
Answer: B, genetic simularities
Which of the following zoonotic diseases is most dangerous?
brucellosis
mad cow disease
campylobacteriosis
influenza
Answer mad cow disease
Explanation:
100% case mortality rate
Humans may acquire the disorder by eating diseased meat products. When it comes from cattle, the disorder is called Creutzfeldt-Jakob disease and ultimately leads to dementia and death. The condition is rare.
The disease is marked by rapid mental deterioration, usually within a few months. Most people eventually lapse into a coma.
Treatment focuses on keeping the person as comfortable as possible.
I don't need help can someone just tell me if this sounds ableist it's for my biology video report homework
I wish mental disorders aren't a thing and if someone does have BPD or any other mental disorder they should get help.
Answer:
yeah it sounds good good luck
As a baseball, player, you hit a home run! If the distance between each of the bases and home plate on a baseball diamond is 90 feet, calculate and describe between your distance and displacement traveled as you finish your home -run jog around the bases and touch home plate to score a run.
Answer:
360
Explanation:
"bases and home plate on a baseball diamond is 90 feet"
90
your distance and displacement traveled as you finish your home -run jog around the bases
There are 4 bases in baseball.
90x4=360
Answer:
360
Explanation:
Explanation:"bases and home plate on a baseball diamond is 90 feet"90your distance and displacement traveled as you finish your home -run jog around the basesThere are 4 bases in baseball.90x4=360
What is the least common multiple of 2,3,15
What are three factors that limit a population's ability to adapt and survive?
Answer:
Not enough time, Not possible, Not enough variation
Explanation: I am 100% sure this is the answer i have looked it up multiple times. good luck, and hope this helps...
which of the following is true about mitosis?
A The process only occurs in plants
B The process occurs in only animals
C The process occurs in every type of organism
D The process occurs only in multicellular oragnisms.
what would happen if a c were inserted between the first and second codons
Answer:
mutations
Explanation:
mutations are errors in codons caused by changes in nucleotide bases.
A well established principle is science with cause and effect is a _______.
A)Theory
B)Guess
C)Hypothesis
D)Law
Answer:Theory or Law.
Explanation:
1. Snapdragons can be red (RR), white (WW), or pink (RW). Cross a red snapdragon with a pink snapdragon. Give the genotype and phenotype percentages.
Answer:
RR (hom0zygous dominant) - 50%
RW (heterozygous) - 50%
Red flower - 50 %
Pink flower - 50%
Explanation:
To solve this problem, we need to use a Punnett square. A red snapdragon has a genotype of RR and a pink snapdragon has a genotype of RW.
R R
R RR RR
W RW RW
50% of the offspring would have the RR genotype (hom0zygous dominant) and 50% would have the RW genotype (heterozygous). The RR genotype results in a red flower, and the RW genotype results in a pink flower, so 50% of the offspring would be red and 50% would be pink.
How comparable are the two plant specimens?
Claim
Evidence
Reasoning
Arrange the processes of the water cycle in the correct order, starting with the heat from the Sun.
what base is found in mRNA but not DNA?
Answer:
Uracil
Explanation:
DNA has the nitrogenous bases of thymine, adenine, guanine, and cytosine.
In mRNA, however, the base called uracil replaces thymine.
mRNA has the bases uracil, adenine, guanine, and cytosine.
So, uracil is the base found in mRNA and not DNA.
The base that is found in mRNA but not DNA is uracil (U) and play a unique role in the synthesis of proteins.
What are nucleotide bases?Nucleotide bases are the building blocks of DNA and RNA, which are the genetic materials of living organisms. There are four nucleotide bases in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T). In RNA, thymine is replaced by uracil (U).
These nucleotide bases are arranged in a specific sequence in DNA and RNA, which provides the instructions for building proteins and performing other functions in the cell. The sequence of nucleotide bases determines the genetic information that is passed from one generation to the next.
The nucleotide bases are connected by covalent bonds to a sugar molecule and a phosphate group, forming a nucleotide. Nucleotides are joined together by covalent bonds to form a chain, which is the structure of DNA and RNA. The sequence of nucleotide bases in DNA and RNA plays a central role in the storage and expression of genetic information.
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Meiosis only occur in what type of cells?
Answer:reproductive cells
Explanation: Meiosis only occurs in reproductive cells, as the goal is to create haploid gametes that will be used in fertilization. Meiosis is important to, but not the same as, sexual reproduction. Meiosis is necessary for sexual reproduction to occur, as it results in the formation of gametes (sperm and eggs).
meaning of----> Central idea of biological evolution
Answer:
The central idea of biological evolution is that all life on Earth shares a common ancestor, just as you and your cousins share a common grandmother.
If you designed your own experiment to prove the law of conservation of matter, what conditions would be required?
Answer:
The amount of matter is conserved when a substance changes form. When matter changes drastically it is not actually destroyed. This can be tested by weighing all the materials involved in an experiment before starting it, and again after the
This Venn diagram is being used to compare the characteristics of nonvascular and vascular plants.
Which characteristic is shared by the two plants, and can therefore be placed in the overlapping section?
have roots
perform photosynthesis
have xylem and phloem
produce seeds
Answer:
perform photosynthesis
The specific xylem and phloem tissues that vascular plants (tracheophytes) have for supporting and conducting water and food, respectively, set them apart from nonvascular bryophytes.Thus, option B is correct.
What best defines about nonvascular and vascular plants?The existence of chloroplasts and the green pigment chlorophyll, which enable plants to carry out photosynthesis, is the fundamental similarity between these two plant groupings. Due to their capacity to manufacture their own food, plants are now the main contributors to the ecosystem's production.
Tracheophytes are another name for vascular plants. Pteridophytes, gymnosperms, and angiosperms are among them.Nonvascular plants lack the specialized vascular system required to transmit water and nutrients. Examples of simple structures that are specialized for doing transportation are those found in algae and bryophytes.
Therefore, perform photosynthesis characteristic is shared by the two plants.
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is parasitism always bad?
Describe the causes of Weathering and Erosion here: (image 1 with grass)
Hawaii Coastal Cliffs are amongst the tallest cliffs in the world. What causes their formation? (image 2 with a bunch of water)
Based on the pattern of Erosion seen in these images, describe the causes of their formation. (image 3)
Answer:
(image 1) Weathering breaks down the Earth's surface into smaller pieces. Those pieces are moved in a process called erosion, and deposited somewhere else. Weathering can be caused by wind, water, ice, plants, gravity, and changes in temperature. As waves attack the shore, headlands are eroded, producing steep sea cliffs. The waves vigorously attack the portion of the cliff near sea level where joints, fissures, and softer strata are especially vulnerable. The cliffs are undermined and caves are formed. The three main forces that cause erosion are water, wind, and ice. Water is the main cause of erosion on Earth. Although water may not seem powerful at first, it is one of the most powerful forces on the planet.
Explanation:
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Answer:
b, trust me
Explanation:
the value current,BBBBB
Why do daughter cells produced from meiosis have greater variation between them than
those produced from mitosis? *
(1 Point)
A. In mitosis, the daughter cells have a random half of the chromosomes from the parent cell
B. In mitosis, the daughter cells have twice as many chromosomes as the parent cell.
C. In meiosis, the daughter cells have twice as many chromosomes as the parent cell.
D. In meiosis, the daughter cells have a random half of the chromosomes from the parent cell
Answer:
D.) In meiosis, the daughter cells have a random half of the chromosones from the parent cell.
Explanation:
In mitosis, the daughter cells have the same number of chromosomes as the parent cell, while in meiosis, the daughter cells have half the number of chromosomes as the parent. The daughter cells produced by mitosis are identical, whereas the daughter cells produced by meiosis are different because crossing over has occurred.
Some snake embryos have small buds resembling limbs. These buds disappear at later stages of embryonic development. These observations suggest that these snakes – a. will have offspring with limbs b. had a parent with working limbs c. have functional limbs as adults d. evolved from a limbed ancestor.
Answer:
so?
Explanation:
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Questions: figure 3 shows plant cells from either the stem or the leaf.
a. Describe what part of the plant is represented in figure 3.
b. What is structure A?
c. What process occurs in structure A?
Answer:
Explanation:
1. looks like chloroplast
2. Structure A would be thylakoids if it is chloroplast
3. Light reaction happens in thylakoid which does things like water photolysis
Thinking about Mendel’s earlier studies, does the gene that determines the shape of a seed have anything to do with the seed color? (Explain your answer and name the law that supports it)
Answer:
Yes.
Explanation:
Yes, the gene that is responsible for the shape of a seed have also affect on the seed color because the dominant allele or gene appears in the shape and physical features of the offspring. Dominant allele is the gene that is responsible for the appearance of physical characteristics of an organism. Mendel's laws of inheritance are the laws which support the above phenomenon.
Yes, the gene determines the shape of a seed and seed color.
What is Phenotype?This is defined as the physical and observable trait of an organism. It is controlled by dominant and recessive allele.
When it is a dominant allele, the characteristics are visible in the organisms. Seed shape and color are physical traits which is why the answer was chosen.
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