Answer:
B. F1
Explanation:
Plants used in first-generation crosses were called P, or parental generation, plants (Figure 8.3). Mendel collected the seeds produced by the P plants that resulted from each cross and grew them the following season. These offspring were called the F1, or the first filial (filial = daughter or son), generation.
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What materials do motor neurons need to survive and how do they get those materials?
Answer:
Neurons are made up of three major parts: a cell body, or soma, which contains the nucleus of the cell and keeps the cell alive; a branching tree like fiber known as the dendrite, which collects information from other cells and sends the information to the soma; and a long, segmented fiber known as the axon, which transmits information away from the cell body toward other neurons or to the muscles and glands.
Which of these animals is not a reptile?
D
a legless animal with a flexible jaw
B
a cold blooded vertebrate with scales
с
a relative of the lizard that swallows food whole
D
an animal that breathes underwater and lives in the ocean
Answer: D: a keyless animal with a flexible jaw
Explanation:
Answer:
A. A legless animal with a flexible jaw
Explanation:
The first on isn't a reptile, the second is a reptile (almost are all reptiles like this). A relative of a lizard is a reptile while you swallow is a boa constrictor. D is a croc or a snake.
What contribution to energy do carbohydrates make?
Answer:
Carbohydrates are the nutrients most frequently used as an energy source (containing 4kcal per gram), as they are fast-acting and turn into energy as soon as they are ingested. This energy powers the brain and body. The energy that powers the brain and body is generated when carbohydrates are broken down.
Explanation:
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23. Which of the following species is most likely to become extinct?
A. a species that is well adapted to its environment
B. a species that is losing its habitat due to deforestation
C. a species that has a great amount of genetic variation
D. a species that has a decreasing number of predators
Answer:
B. Is the answer. They are losing their habitat and therefore will be more likely to go extinct
Answer:
B). a species that is losing its habitat due to deforestation
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Give an example of a phenotype for your favorite animal: ___________.
Answer:
Dogs
Explanation:
Hope this will help
70 points! b) How do scientists make a person's genes fluoresce? (2 points)
What is the process of water moving from an area of low solute
concentration to an area of high solute concentration?
Answer:
Osmosis
Explanation:
Answer:
it is osmosis
Explanation:
Osmosis is the process whereby water move from a region of lower concentration to a region of higher concentration across a semi-permeable membrane.
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Define hydrophobic.
Answer:
Meaning " water fearing". Hydrophobic compounds do not dissolve easily in water, and are usually non-polar.26 Jul 2004
In general, how do many human activities influence the carbon cycle?
Answer:
Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... The ocean absorbs much of the carbon dioxide that is released from burning fossil fuels.
Explanation:
Carbon moves from the atmosphere to plants. ...
Carbon moves from plants to animals. ...
Carbon moves from plants and animals to soils. ...
Carbon moves from living things to the atmosphere. ...
Carbon moves from fossil fuels to the atmosphere when fuels are burned. ...
Carbon moves from the atmosphere to the oceans.
In some types of cattle, brown hair and white hair share dominance. When two cows
reproduce, they can have offspring that have both brown and white hair.
B-brown hair
B' – white
Plz help ASAP !!!!!!!!!
Answer:
Ohm = resistance
Ampere = current
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Explanation:
what is theory of to observe the neucles in cheek cells
Answer: The theory of cheek cells is used for the identification of cheek cells.
Explanation:
The cells of cheek do not have cell wall. They have a cell membrane which allows on certain molecules to pass through it. The nucleus is located centrally in the cheek cells and it stores the DNA. It can be stained with the help of the methylene blue reagent. It appears blue in color which can be observed under the microscope. The cheek cells can be isolated from the buccal cavity by using cotton buds and cotton swabs can help in isolating the cells.
Which statement best describes the cell membrane?
Grupo de escolhas da pergunta
A) a two layer barrier of phospholipids, whole hydrophobic heads face toward the water, while their hydrophilic tails face away from the water
B) a two layer barrier of phospholipids, whose hydrophobic heads face away from water, while their hydrophilic heads face towards the water
C) a two layer barrier of phospholipids, whose hydrophilic heads face away from water, while their hydrophobic heads face towards the water
D) a two layer barrier of phospholipids, whole hydrophilic heads face toward the water, while their hydrophobic tails face away from the water
ASAP
Answer:
D
Explanation:
How is dna like a ladder
Explanation:
The structure of DNA can be compared to a ladder. It has an alternating chemical phosphate and sugar backbone, making the 'sides' of the ladder. ... These bases make up the 'rungs' of the ladder, and are attached to the backbone where the deoxyribose (sugar) molecules are located.
why are echinoderms more advanced than arthropods and mollusks?
The genetic code for one amino acid molecule consists of A) five sugar molecules B) two phosphates C) three nucleotides D) four hydrogen bonds
Answer:
c
Explanation:
The genetic code for one amino acid molecule consists of three nucleotides. Thus option C is correct.
What is genetic code?
Genetic code is defined as a sequence of instructions that directs the translation of DNA into 20 amino acids, which are the basic building blocks of proteins in living cells.
It can also be defined as the collection of instructions that live cells follow to convert information stored in genetic material into proteins.
Nucleotides are defined as a three-subunit chemical molecule consisting of a nitrogenous base, a five-carbon sugar, and a phosphate group.
It can also be defined as the fundamental building component of nucleic acids.
There are basically two types of nucleotides.
Purines - They are defined as a heterocyclic aromatic organic molecule composed of two fused rings. Adenine, guanine and hydro xanthine are purines.Pyrimidine - They are defined as a simple aromatic compounds with a six-membered ring of carbon and nitrogen atoms. Cytosine, thymine and uracil are pyrimidines.Thus, the genetic code for one amino acid molecule consists of three nucleotides. Thus option C is correct.
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Which product of photosynthesis is the most vital to other organisms?
Where in the world is HIV most prevalent?
Answer:
Explanation:
South Africa
Answer:
South Africa has the most people living with HIV
Explanation:
about 7.5 million
When will a recessive trait be seen
in an organism?
A. when at least one recessive allele is present
B. when there is no recessive allele present
C. when there is no dominant allele present
Answer:
c
Explanation:
Why do States like Arizona have less potholes than New York?
Answer:
Because New York has way more sewer system's. In 1849, following a series of deadly cholera outbreaks, the city started building sewers. New York laid 70 miles of sewers between 1850 and 1855. It then expanded the sewer network throughout the city as it grew.
Explanation:
If you traveled East through time zone what would the time difference be
I’ll give brainliest
Answer:
Explanation: If you travel east across the time zone you will gain time.
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In a parallel circuit, there is only one path for current to take. Please select the best answer from the choices provided T F
Answer:
False.
Explanation:
A parallel circuit has more than one path for current flow. The number of current paths is determined by the number of load resistors connected in parallel. Total current in a parallel circuit is the sum of the individual branch currents.
Fill in the sequence diagram below to summarize Mendel’s experimental process.
First box: Self-fertilization/self-pollination of F1 flowers
Second box: Determine F2 generation phenotypic ratios
if 10% of the nucleotides in a DNA molecule contain guanine, what percentage of the nucleotides contain each of the other three bases
Cytosine-
Adenine-
Thymine-
Answer:
Cytosine: 10%
Adenine: 40%
Thymine: 40%
Explanation:
So we know that Cytosine and Guanine are complementary and Adenine and Thymine are complementary.
Cytosine would be 10%
What's left is 80%, which would be divided by two because adenine and thymine have the same percents.
Adenine: 40%
Thymine: 40%
Because cilia cannot function properly, smokers have a frequent headache.
True
Answer:
Explanation:
The cilia sweep out mucus and dirt so your lungs stay clear. Smoking temporarily paralyzes and even kills cilia. This makes you more at risk for infection. Smokers get more colds and respiratory infections than non-smokers.
Because cilia cannot function properly, smokers having a frequent headache is a true statement.
What is Cilia?These are tiny hair projections which are found in the airway of the body and helps to prevent dust or foreign matter from getting to the lungs.
Smoking destroys it and leads to insufficient oxygen inhaled by the body as a result of presence of contaminants which may therefore lead to headache.
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What happens when a low air pressure system meets a high air pressure system? (2 points)
Group of answer choices
The temperature of the air drops to below freezing.
The air moves to the low pressure system, creating wind.
The precipitation is removed from the air.
The air starts blowing in an easterly direction.
Answer:
the air moves to the low pressure system creating wind
Explanation:
Answer: B
Explanation:
can anyone help for question 6?
answer: CTA GGT
it's obvious.
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think before answering
If Individual 3 has children with a woman that is heterozygous for the genetic disorder, what is the probability they will have an affected child?
If Individual 3 has children with a woman who is heterozygous for the genetic disorder, then the chance of producing genetically disordered offspring is 25% if the male is heterozygous and 0% if the male is not.
What is the genetic disorder?A recessive genetic disorder, such as cystic fibrosis, and an autosomal dominant disorder, such as Huntington's disease, are examples of genetic disorders caused by a gene that can express itself in either a dominant or recessive manner. For example, the disease is represented by the aa. If the male is heterozygous for diseases such as "Aa," then he will produce 25% "aa" type offspring when he crosses with the heterozygous female. When a man is purebred AA and crosses with a heterozygous female, then no offspring will be genetically infected.
Hence, if Individual 3 has children with a woman who is heterozygous for the genetic disorder, then the chance of producing genetically disordered offspring is 25% if the male is heterozygous and 0% if the male is not.
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The rat snake is found in many different environments. They are found in woods, along the coast, in cities, and in mountains. They eat rats, birds, mice, and squirrels. Rat snakes also have varied appearances. They are gray, yellow, black, and mixes of these colors, depending on where they live. Which of the following explains the differences in colors of the rat snake?
A. The rat snakes' colors vary because they eat different foods in different environments that make their skin color change.
B. The rat snakes' colors vary as a result of artificial selection, which allows them to choose the best color suited for their environment.
C. The rat snakes' colors are adaptations caused by natural selection, which help them blend into their environment and hunt for food.
D. The rat snakes' colors vary because they have the ability to change their color like a chameleon in response to a changing environment
Answer:
c
Explanation:
Answer:
the answer is c
Explanation: because artificial selection would be like breading pure bred dogs, but in the wild it would be natural selection.