Cross pollination, when the pollen from
one plant lands on the stigma of the
flower in a different plant, is a form of
sexual reproduction. The advantage of
sexual reproduction is that is creates
Answers
Answer:
Genetic diversity.
Related Questions
For sneaky snakes, being rude (R) is dominant to being respectful (r). Complete the cross below, and determine the phenotype (dominant : recessive) ratio.
R r
r #1 #2
r #3 #4
2 (#5) : 2 (#6)
Column A
1.
#1:
#1
2.
#2:
#2
3.
#3:
#3
4.
#4:
#4
5.
#5:
#5
6.
#6:
#6
Column B
a.Rr
b.RR
c.sweet
d.respectful
e.sneaky
f.rr
g.rude
Answers
According to the question, the female snake will have genotype rrss, whereas the male snake will have genotype RRSS.
What is the offspring's phenotype?The trait that these genes express is known as phenotype. Phenotypes include things like blossom position, pod shape, eye color, and hair color. In this case, it instructed you to create a hybrid between two parents whose eye color was homozygous dominant.
How is the genotype discovered?A genetic test is a clear-cut approach to determine your genotype. These days, businesses like 23andMe can do this reasonably cheaply. But for this to function, researchers must have identified the genetic variation that results in a trait.
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The diploid chromosome number in standard laboratory mice is 40. What is n for this organism?.
Answers
There are 40 diploid chromosomes under ordinary laboratory conditions, hence the haploid number is equal to half of the diploid number. As a result, the diploid number is 2 n = 40.
Which of these cells has a diploid 2n genome?A pair of nonhomologous sex chromosomes and two sets of 22 homologous chromosomes make up the 46 chromosomes found in human somatic cells. The 2n, or diploid, state, is this.
A single cell eventually divides into two daughter cells, each of which has the same amount of genome as the mother (initial) cell. As a result, when mitosis begins, a cell with 40 chromosomes will give rise to daughter cells with 40 chromosomes.
Genetic information is transported from cell to cell in a structure like a thread made of protein and a single DNA molecule. The diploid state is indicated by the word 2n. The presence of two sets of chromosomes in the cell is indicated.
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The atoms or molecules that combine in a chemical reaction are called
Answers
Answer:
In a chemical reaction, the atoms and molecules that interact with each other are called reactants. In a chemical reaction, the atoms and molecules produced by the reaction are called products.
Explanation:
What is the structure below? Label all parts of this structure including the polar & no polar regions.
Answers
The structure present in the image is of a phospholipid. It has 2 components:
Hydrophilic, polar phosphate head.Hydrophobic, non-polar, fatty acid tails.A phospholipid is one of the main constituent of plasma membranes. It is an amphipathic molecule as it contains the hydrophilic as well as hydrophobic parts. The hydrophilic part is the glycerol backbone along with phosphate group attached to its terminal hydroxyl group.
The fatty acid chain is the hydrophobic portion of the phospholipid that appears on the inner side of the plasma membrane bilayer. One of the two fatty acid chain is unsaturated due to presence of double bonds that gives it a kink.
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Which of the following is a correct sequence of events in cellular respiration?
Answers
The correct sequence of events in cellular respiration is option a: glycolysis, citric acid cycle, electron transport chain.
During cellular respiration, glucose is broken down to produce energy in the form of ATP. The process starts with glycolysis, which occurs in the cytoplasm and involves the breakdown of glucose into pyruvate molecules. Glycolysis generates a small amount of ATP and NADH.
The pyruvate molecules produced in glycolysis enter the mitochondria, where the citric acid cycle, also known as the Krebs cycle, takes place. In this cycle, the pyruvate is further broken down, releasing carbon dioxide and generating NADH and FADH2 as electron carriers. The citric acid cycle also produces a small amount of ATP.
The electron carriers NADH and FADH2 then participate in the electron transport chain, which is located in the inner membrane of the mitochondria. In the electron transport chain, the electrons from NADH and FADH2 are transferred through a series of protein complexes, creating a flow of electrons that drives the synthesis of ATP. This process is known as oxidative phosphorylation.
Therefore, the correct sequence of events in cellular respiration is glycolysis, citric acid cycle, and electron transport chain, as stated in option a.
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Question
Which of the following is the correct sequence of events in cellular respiration?
a. glycolysis, citric acid cycle, electron transport chain
b. glycolysis, preparatory reaction, citric acid cycle, electron transport chain
c. glycolysis, electron transport chain, preparatory reaction
d. citric acid cycle, glycolysis, electron transport chain, preparatory reaction
e. citric acid cycle, electron transport, glycolysis, preparatory reaction
4. Which of the following is true regarding genetic mutations?
a. All mutations are harmful.
b. All mutations are beneficial to the organism.
c. Mutations can be harmful, beneficial, or have no effect on the organism.
Answers
Answer:
C
Explanation:
mutations can be harmful, helpful, or neutral depending on the environment
easy 20 points 1 quest
Answers
D, energy is transferred from producers to consumers
Explanation: Consumers, well, consume producers so that they can get energy. Therefore, the answer is D.
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Describe the difference between a chemical and an electrical gradient. What's an electrochemical gradient? Do you think an electrochemical gradient can have conflicting component gradients?
Answers
Answer:
1) The difference between chemical gradient and electrical gradient is that chemical gradient refers to the change in concentration of an ion or molecule in a solution across a biological membrane while electrical gradient refers to the existence of an electrical potential difference that leads to the movement of charged ions towards or away from the electrical potential
2) Electrochemical gradient is the charge and ion concentration difference across a biological membrane
3) No because electrochemical gradient which consists of both an electrical and chemical gradient have a complementary effect in determining the level of the electrochemical gradient.
Explanation:
The electrochemical gradient is the gradient of the electrochemical potential and is usual for a positive and negative ion that can move across the membrane.
What is the electric gradient ?The gradient is made of two parts that are chemical which is different in solutes that can move across the membrane and have an electrical component that shows difference in changes across the membrane.
The electrostatic gradient is a potential used in an iron that can be used across the membrane. Due to unequal concertation of ions, they will move across the simple diffusion.
The electrochemical has potential in electroanalytical industries as batteries and fuels. The gradient has contrasting components as change across the membrane.
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Where does most regular lightning occur?
A. The stratosphere
B. The troposphere
C. The Mesosophere
Answers
Normally, how many chromosomes are required to determine the outward expression of a trait?a homologous paironly oneany twotwo pairs
Answers
Answer:
A homologous pair
Explanation:
In determining the expression trait of humans, this is based on the homologous chromosomes. This in turn comprised of alleles otherwise known as homologous alleles. The homologous loci are thereby located in these alleles which served as the formation of traits when combined.
Hence, normally, A HOMOLOGOUS PAIR is required to determine the outward expression of a trait?
what is the best example of chemical work?
Answers
Lactate dehydrogenase is the examples of chemical work, this helps in conversion of pyruvate ( which is the end product of glycolysis) into lactate, with the reduction of NAD+ to NADH which can participate in other chemical reactions to create energy, it is an enzyme of the anaerobic metabolic pathway.
we can take example of lactic acid fermentation, where lactic acid is produced in the muscles when there is exertion in our muscles.
so, when we exercise there is utilization of ATP, which leads to demand of oxygen and accumulation of NADH. The lactic acid is produced is the waste energy in the process.
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Which muscle fibers type has the highest fatigue resistance?
Answers
Muscle fibers type has the highest fatigue resistance is slow-twitch muscle
Skeletal muscle is a cylindrical, elongated, multinucleated muscle attached to the human skeleton. These muscles are used to move the limbs consciously through the process of muscle contraction.
Slow-twitch muscle or type I muscle is a type of skeletal muscle that is red in color because it contains myoglobin. Myoglobin is a kind of reddish protein that functions to bind oxygen to muscle fibers. Slow-twitch muscles consume oxygen slowly in a very efficient way and contain lots of mitochondria as an energy source. Both of these causes this type of muscle to become fatigue resistant.
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By keeping food cold, the growth of microorganisms is:
Answers
Answer:
they are called growth because you are training them
Which is the last link in the wetlands food chain?
A. Consumers
B. Predators
C. Decomposers
D. Producers
Answers
Answer:
BRO THE CORRECT ANSWER IS .... C) DECOMPOSTER
Explanation:
I KNOW IT IS SAME BUT STILL YOU CAN MARK ME AS BRAINIEST
Only about _____% of the water on Earth is potable (suitable for humans to drink).
Of this water that is potable, only about 30% is in the form of ground water.
On the surface of the planet only ______% of water is freshwater in the forms of lakes and streams.
Areas with low availability of drinking water are said to be water ______________.
Ideas to reduce water stress in preparation for the anticipated shortages include:
→ _____________ pollution in rivers and lakes
→ using water conserving technology
→ perfecting desalination plants to process undrinkable ________ water into drinkable fresh water
Answers
Answer:
only about 0.3%and the plant is 99.7 and the 3 one is 0.3 unattainable.
Explanation i hope the
A microbe can be successfully cultured in the dark in a broth that includes only sugar and a few amino acids. What type of metabolism does it have? View Available Hint(s)for Part A a chemoheterotroph a cyanobacterium a chemoautotroph a photoautotroph
Answers
Microbes can be successfully cultured in the dark in broth containing only sugar and a few amino acids. It has a chemoheterotroph type of metabolism. Here option A is the correct answer.
Chemoheterotrophs are organisms that obtain their energy and carbon from organic compounds, such as sugars and amino acids, which they obtain from other living or dead organisms. They use cellular respiration to break down these organic compounds and produce ATP for energy.
In contrast, chemoautotrophs obtain their energy from chemical reactions, such as the oxidation of inorganic compounds like sulfur or iron, but they still require a source of carbon, which they obtain from carbon dioxide. Photoautotrophs, such as cyanobacteria, use light as their source of energy to perform photosynthesis, and they also obtain their carbon from carbon dioxide.
The fact that the microbe can grow in the dark and does not require any inorganic compounds for energy or carbon strongly supports the conclusion that it is a chemoheterotroph.
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Complete question:
A microbe can be successfully cultured in the dark in a broth that includes only sugar and a few amino acids. What type of metabolism does it have?
A - a chemoheterotroph
B - a cyanobacterium
C - a chemoautotroph
D - a photoautotroph
a transgenic organism is one that a transgenic organism is one that changes gender over time. provides gene information to another organism. has received genetic information from another organism. changes gene frequency over time.
Answers
A transgenic organism is one that has received genetic information from another organism.
The genetic information in transgenic organism can come from the same species or a different species, and it results in a change of gene frequency over time. In other words, a transgenic organism's DNA is altered from its original state by the introduction of foreign genetic material. This alteration can lead to a change in the organism's phenotype, or physical characteristics.
The purpose of making transgenic organisms is to enable organisms to acquire certain traits that were not previously possessed. So that the transgenic organisms in the form of food crops will be resistant to pests, or improve the quality of the plants.
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Which of these is TRUE?
A. DNA must unwind before it can replicate.
B. Ribosomes control DNA replication.
C. DNA replication occurs outside the nucleus.
D. DNA replication only occurs once per day.
Answers
The statement which is true is Ribosomes control DNA replication. Thus, option B is correct.
When the Super helical activity of DNA is seen?Super helical activity of DNA is seen in replication during absence of topoisomerase will cause DNA to become more and more wounded by positive sigma which denotes the percent of DNA supercolied and wound and the same negative sigma denotes the percent of DNA remained to be unwounded in presence of isomerase.
The DNA unwinding has stopped 600 base pairs ahead of sigma value 0.14 that means 1.4% of DNA is still needs to be unwounded and in other case with sigma value of 0.06 means around 0.6% of DNA needs to be unwounded and it is over wounded and it is ahead of around 2500 base pairs of DNA.
Therefore, The statement which is true is Ribosomes control DNA replication. Thus, option B is correct.
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The graph shows the relative enzymatic activity among four different enzymes. Which enzyme would be most efficient in an environment where the pH level can fluctuate between acidic and basic?
Answers
The graph shows the relative enzymatic activity among four different enzymes. The enzyme that would be most efficient in an environment where the pH level can fluctuate between acidic and basic is Enzyme C
This is further explained below.
What is an Enzyme?Generally, a material that is generated by a live creature and works as a catalyst to bring about a certain biochemical process in order to bring about the reaction.
In conclusion, The graph presents information on the relative levels of enzymatic activity shown by four distinct enzymes.
Enzyme C is the enzyme that would be the most effective in an environment with a pH level that may shift between acidic and basic.
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An area on a topographic map
has the following contour line configuration:
First, the lines are fairly widely spaced. Then
they are closely spaced. Finally, they form
concentric circles. Describe the topography
represented by these lines
Answers
Choose two different types of cell and explain how they are adapted for the job they do in your body
Answers
Answer: Neurons, which transmits information, have dendrites and axons to transmit the signals. Cardiomyocytes, capable of spontaneous contraction due to the ramifications and tight junctions between cells.
Explanation:
Neuron: Principal component cell of the nervous system, which receives, processes and transmits information through electrical and chemical signals thanks to the electrical excitability of its plasma membrane. So they are specialized cells in the reception of stimuli and conduction of the nerve impulse, in the form of an action potential, between them through connections called synapses, or with other cell types such as, for example, the muscle fibers of the motor plate. So neurons have the ability to communicate accurately, rapidly, and over long distances with other cells, whether nerve, muscle, or glandular. Neurons have morphological characteristics that support their functions:
Dendrites: Short extensions consisting of cytoplasmic projections enveloped by a plasma membrane without a myelin sheath, that transmit impulses to the cell soma. The nerve impulse travels through the neuron, and when it reaches the dendrites, it jumps to the next neuron through the synapse (connection between cells), which occurs through the exchange of chemical substances called neurotransmitters. It also has many microtubules and few neurofilaments, both arranged in parallel bundles, many mitochondria, Nissl clumps (composed of free ribosomes attached to the rough reticulum) and smooth endoplasmic reticulum.Axons: Long extension surrounded by a membrane called axolemma, which conducts impulses from the soma to another neuron or target organ. Many axons are covered with a special insulating substance called myelin, which helps them to transmit nerve impulses quickly. Near its end, the axon divides into many branches and develops bulbous structures known as axon terminals. These axon terminals form connections with target cells.The cell bodies of some neurons from the Peripheral Nervous System (PNS), such as the motor neurons that control skeletal muscles, are located in the Central Nervous System (CNS). The axons from this motor neurons run from the CNS to the muscles they connect with. The cell bodies of other PNS neurons, such as sensory neurons that provide information, for example about touch or temperature, are located outside the CNS, where they are grouped in clusters known as ganglia. Axons of peripheral neurons that travel a common pathway bundle together and form nerves.
Neurons also consists of a central nucleus and a perikaryon that contains the typical organelles of an eukaryotic cell.
Cell nucleus: Contains one or two prominent nucleoli, and a dispersed chromatin, which indicates a high transcriptional activity.The nuclear envelope, with a multitude of nuclear pores, has a highly developed nuclear lamina. Perikarion : The most notable organelle, is the Nissl substance and such abundance in protein synthesis is due to the high biosynthetic rate. The Golgi apparatus is a highly developed system of flattened, small agranular vesicles and it is the region where the products of the Nissl substance enable further synthesis. There are also lysosomes and mitochondria , a cytoskeleton rich in microtubules and intermediate filaments.
Cardiomyocytes: Cardiac muscle cells that represents the contractile unit of the myocardiom, capable of spontaneous contraction since they show specialization in excitation and conduction of action potentials. The characteristic ramifications and tight junctions between these cells form a solid network of myocardial fibers, which determines the cardiac pump function and the cellular electrical conduction system that allows this pump to function. They are uninucleated cells with a large nucleus located in the center of the cell cytoplasm and they show transverse striations, with dark bands corresponding to the overlapping of actin and myosin filaments in their cytoskeleton, and with light bands corresponding only to actin filaments. Cardiomyocytes have morphological characteristics that support their functions:
Sarcoplasmic reticulum: Not well developed and distributed irregularly among the myofibrils, which appear distinctly separated.Mitochondria: Small and extremely numerous, packed and regularly distributed, dividing the cardiac cells into very obvious myofibrils. Cardiac muscle cells have very little glycogen and therefore cannot obtain much energy from glycolysis. This means that most of their energy comes from oxidative phosphorylation, with high oxygen consumption. Cytoplasm: Occupied by longitudinally arranged myofibrils with a striated pattern. Intercalary discs: Join cardiomyocytes, which appear as dark bands in histological preparations, and which are a set of junctional complexes where desmosomes and adherens junctions can be found. There are also cleavage junctions that allow contractile synchronization as they communicate cytoplasms of neighboring cells directly.Epidermic cells and red blood cells are two types of specialized cells. These mature cell types are developed by cell differentiation.
Cell differentiation refers to the differential gene expression that leads to the development of different types of cells which are specialized to perform specific functions.For example, hematopoietic stem cells express the hemoglobin gene to develop specialized red blood cells, which are specialized to transport oxygen to all cells of the body.Moreover, epidermic cells are specialized to provide mechanical strength and protection.In conclusion, epidermic cells and red blood cells are two types of specialized cells. These mature cell types are developed by cell differentiation.
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what percent of radiation from the sun is absorbed once it enters the atmosphere?
Answers
What island provided the most vital air base in the U.S. island-hopping campaign?
Answers
Answer:
Okinawa
Explanation:
the nephron has the ability to produce almost sodium-free urine.
Answers
The statement that the nephron has the ability to produce almost sodium-free urine is not entirely accurate. While the nephron does play a crucial role in regulating the concentration of sodium in urine, it does not typically produce sodium-free urine under normal physiological conditions.
The nephron is the functional unit of the kidney responsible for filtering and processing blood to produce urine. Within the nephron, the processes of filtration, reabsorption, and secretion occur to maintain electrolyte and fluid balance in the body.
However, in certain pathological conditions or under the influence of specific medications, it is possible to manipulate the nephron's function to increase sodium excretion and produce urine with lower sodium content.
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Amenorrhea is an absence of menstruation, which can be the result of ______.
Answers
Amenorrhea is an absence of menstruation, which can be the result of pregnancy, dieting, and menopause.
Amenorrhea is the lack of menstruation, which is frequently described as missing one or more menstrual cycles. Primary amenorrhea is the lack of menstruation in a person who has not experienced a period by the age of 15. Birth control tablets and other hormone treatments have the potential to restart menstrual periods in some women.
Treatment options for amenorrhea brought on by thyroid or pituitary issues include medicines. Surgery can be required if the issue is being caused by a tumor or structural obstruction. Gonadotropin-releasing hormone (GnRH), the hormone that initiates the menstrual cycle, is slowed or stopped by the hypothalamus, a brain organ that controls bodily functions.
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Amenorrhea is an absence of menstruation, which can be the result of several different causes.
According the most common causes of primary amenorrhea, which is defined as the absence of menstruation in someone who has not had a period by age 15, relate to hormone levels. However, anatomical problems such as Turner Syndrome or Müllerian agenesis can also cause amenorrhea. It also suggests that amenorrhea can be caused by a change in function or problem with some part of the female reproductive system. Additionally, it states that there are certain times when a woman is not supposed to get her period, such as before puberty, during pregnancy and after menopause, which can also be causes of amenorrhea.
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What maintains the flow of ions from a greater to lower concentration?
Ca - K pump
K - Na pump
Ca - Na pump
Na - Cl pump
Answers
Answer:
K - Na pump
Explanation:
a mechanism of active transport that moves sodium ions out of the cell and potassium ions into the cells.
True or false: Proteins provide hormones
Answers
Answer:
false
proteins dont provide hormones
In a crime scene, what would you place charcoal in found as evidence? And why?
-Small paper envelope
-Small cardboard box with cotton
-Paper bag
-Metal box
-Glass jar
-Plastic bag
Answers
Which of the following is NOT a product of glycolysis?
ATP
glucose
pyruvic acid
Answers
Answer: glucose
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Several organs that you would be able to see in the Thoracic Cavity would include? A. heart, liver, brain B. lungs, heart, esophagus C. stomach, liver, intestines D. brain, eyes, ears
Answers
Answer: B. Lungs, heart, and esophagus