Answer:
D ik
Explanation:
Answer:
During interphase, the cell grows and the nuclear DNA is duplicated. Interphase is followed by the mitotic phase. During the mitotic phase, the duplicated chromosomes are segregated and distributed into daughter nuclei. The cytoplasm is usually divided as well, resulting in two daughter cells.
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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.
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
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:
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.
Before mitosis begins, what happens during S-phase?
Answer:
the S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. in this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.
in S phase, the cell synthesizes a complete copy of the DNA in its nucleus. it also duplicates a microtubule-organizing structure called the centrosome. the centrosomes help separate DNA during M phase.
Explanation:
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
organisms are structured and supported by....
Answer:
cells
Explanation:
Answer:
cells
Explanation:
Describe Griffith’s experiment
Answer:
Griffith's Experiment was an experiment done in 1928 by Frederick Griffith. It was one of the first experiments showing that bacteria can get DNA through a process called transformation. ... In this experiment, bacteria from the III-S strain were killed by heat, and their remains were added to II-R strain bacteria.
Explanation:
- Which of the following would lead to a cooling of our climate?
-An increase of carbon -dioxide in the atmosphere
-Melting polar ice caps
-Warming of the oceans
-An increase of plant life
Answer:
it would be an increase of plant life
Explanation:
the reason for this is that plants take up the carbon dioxide and give us fresh o2
Which of the following best explains the comparative anatomy of bird wings and fly wings?
a). homologous structures
b). analogous structures
c). vestigial structured
d). embriological structures
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:
5. Gravity is the force that causes the dust cloud to heat up as it is pulled
inward in the process of forming a star. (True or False) *
True
False
Answer:
True
Explanation:
enshshshsssaaaasc
can anyone help for question 6?
answer: CTA GGT
it's obvious.
hope it helps.
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think before answering
Intervals of geologic time are bound by important events, like mass extinctions or the appearance of animals with hard parts. The first single-celled organisms appeared about 3.5 billion years ago. Many sea animals first show up in the Cambrian period of the Paleozoic era. That was about 545 million years. It is sometimes referred to as the Cambrian explosion because it happened relatively quickly. It lasted just over 50 million years. The next period, , the Ordovician, ended with mass extinctions of 60% of all marine invertebrates. Dinosaurs wouldn't appear for over 200 million years, during the Jurassic period in the Mesozoic era. Based on the passage, in geology, 50 million years is A an era. B not considered a very long time. C too short for any significant events to occur. D about how long dinosaurs were on the planet.
Based on the passage above, in geology, 50 million years is not considered a very long time (Option B).
What is geological time?Geological time is an expression used to describe processes that occurred on a high time scale.
Geological processes such as the emergence of species (speciation) can take millions of years.The processes on a geological time scale are difficult to commensurate from a human thinking perspective.In conclusion, based on the passage above, in geology, 50 million years is not considered a very long time (Option B).
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Give an example of a phenotype for your favorite animal: ___________.
Answer:
Dogs
Explanation:
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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:
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.
Each body cell of an octopus contains thirty-two chromosomes. The number of chromosomes in an octopus egg will be
Answer:
16 chromosomes because if a body cell (diploid) has 32 chromosomes, you need to divide it by 2 to get your egg cell
Explanation:
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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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
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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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.
1. Which layer of the atmosphere has:
a. the most water vapor?
b. the lowest pressure?
2. What remains the same in different layers of the atmosphere?
3. Scientists have divided the earth's atmosphere into different layers. What property of the atmosphere do you think these divisions are based on?
4. You collected data on four layers of the atmosphere. The atmos- phere merges into outer space in an extremely thin upper layer known as the exosphere. Which of the five layers of the atmos- phere do people live in?
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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What is the gradient (change in elevation/length of river) of the Naugatuck River?
Answer:
As the river flows south from Torrington to Derby it drops approximately 540 feet in elevation, resulting in a relatively steep gradient of approximately 13 feet per mile. Consequently, the river is a predominantly rapidly flowing river for most of its length, characterized occasionally by rapids.
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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why do we need to eat
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.
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.
Plz help ASAP !!!!!!!!!
Answer:
Ohm = resistance
Ampere = current
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Explanation: