Answer:
Case 1 ⇒ Bb x bb ⇒ F1 = 50% Bb, black + 50% bb, white
Case 2 ⇒ Bb x Bb ⇒ F1 = 75% Black + 25% white
Case 3 ⇒ Bb x Bb ⇒ F1 = 25% BB + 50% Bb + 25% bb
⇒ Bb x bb ⇒ F1 = 50% Bb + 50% bb
Case 4 ⇒ BB x BB ⇒ F1 = 100% BB Black
⇒ Bb x BB ⇒ F1 = 50% BB + 50% Bb = 100% Black
⇒ bb x BB ⇒ F1 = 100% Bb black
Case 5 ⇒ bb x bb ⇒ F1 = 100% bb white
Case 6 ⇒ Bb x bb ⇒ F1 = 50% Bb black + 50% bb white
Case 7 ⇒ Bb x Bb ⇒ F1 = 75% black + 25% white
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
Spatial perception and the recognition of familiar objects require activity in which of the following cortical regions?
a. Auditory association areas
b. Primary olfactory cortex
c. Visual association areas
d. Orbitofrontal cortex
Answer:
c. Visual association areas
Explanation:
The visual association areas are part of the cerebral cortex and are responsible for allowing human beings to have special perception, movement perception, visual perception processing and recognition of familiar objects. These areas are extremely important for the maintenance of human activities, and the deterioration or disturbance of these causes serious problems, difficult to be resolved.
Plants are susceptible to bacterial infections, which can damage their structure or even kill them. Which of the following would be the best antibiotic to treat a plant that is infected with bacteria?
A) a drug that interferes with mitochondria function.
B) a drug that disrupts cell wall structure and function.
C) a drug that destroys the central vacuole.
D) a drug that blocks gene expression in circular chromosomes.
Answer:
The correct answer is: D) a drug that blocks gene expression in circular chromosomes.
Explanation:
Antibiotics are the drugs that are mostly used when it comes to treating bacterial infections because of their effective mechanisms in killing bacteria and/or preventing their spread.
Bacteria have the ability to colonize and infect different organisms by making use of highly diverse mechanisms, some of which involve the use of toxins or the inhibition of the host's immune system.
Bacteria are prokaryotic individuals - instead of having a nucleus containing DNA in multiple chromosomes like eukaryotes have, they have one single circular chromosome that holds all or most of all their genetic information. If we wanted to treat a plant (which is a eukaryotic being) for a bacterial infection, we should aim to block the expression of genes in circular chromosomes, which is a distinct feature in bacteria.
If we were to give the plant a drug that interferes with mitochondria function or destroys the central vacuole, we would only be affecting plant cells and probably killing the plant. A drug that disrupts cell walls would affect the bacteria but would kill the plant as well (both organisms have cell walls). The only viable option out of the mentioned is using a drug that inhibits gene expression in circular chromosomes.
A phosphate group has the following chemical composition:
a. -OH
b. -COOH
c. -PS2
d. -CH3
e. -PO4
Answer: The phosphate group has the chemical composition [tex]-PO_{4}[/tex].
Explanation:
A phosphate group is a group where one phosphorus atom is attached to four oxygen atoms.
The oxygen atoms are attached to the phosphorus atom via single bond and one oxygen atom is attached to the phosphorus atom via double bond.
The chemical formula which represents a phosphate group is [tex]-PO_{4}[/tex].
Thus, we can conclude that phosphate group has the chemical composition [tex]-PO_{4}[/tex].
A sample of 100 students shows that 16 have smooth chins (recessive allele to cleft chin). Calculate the number o heterozygous students.
Which of the following models describes the way in which DNA Replication occurs?
semiconservative
dispersive
random
conservative
Answer:
semiconservative
Explanation:
The semiconservative model of DNA replication states that only one DNA strand is used as template for the synthesis of the other new strands. In DNA replication, the DNA molecule is first unwind into a replication fork containing two single strands of DNA.
After unwinding, DNA polymerase synthesizes new complementary strands of DNA using each of the old strands. So in essence, the two DNA molecules after replication consists of one old and one new strand of DNA. This is basically the semi-conservative model of DNA replication.
Biology help please!!!!
Answer:
Disaccharides are when 2 monosaccharides join together. It is formed by condensation. A water molecule is released. Example include Maltose or sucrose.
Polysaccharides are long chains of monosaccharides joined together. It is a good store of energy. Examples are starch or glycogen
Explanation:
What could a dog living now and a cat living thousands of years ago have in
common?
A. They have the same bone structure.
B. They have some of the same matter.
C. They have the exact same DNA.
D. They have the same amount of energy.
SUBMNT
Answer:
b
Explanation:
not all dna is the same and energy depends on diet along with cats and dogs having different bone structure.
Which statement accurately identifies the order of tissues pictures left to right in the microscopic image?
a) Epithelial cells, smooth muscle, connective tissue
b) Connective tissue, epithelial cells, smooth muscle
c) Epithelial cells, connective tissue, smooth muscle
d) Connective tissue, smooth muscle, epithelial cells
Answer:
The correct answer is - d) Connective tissue, smooth muscle, epithelial cells.
Explanation:
The connective tissues are the tissue layers that protect the outside of arteries and veins. The thick outermost layer of a tunica adventitia and other, made of connective tissues.
The middle layer that has tunica media that s made up of outer connective and smooth muscles in the inner or middle and in the innermost layer is made up of epithelial layer.
As per the image given the statements that describe the tissues from the left to right in a microscopic image are connective tissue, smooth muscles, and epithelial cells.
The connective tissues support and protect and give stricture. The smooth muscles are involuntary non straighter muscles. The epithecal cells that line the surface of the body.Hence the option D is correct.
Learn more about the statement accurately identifies.
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Consider a mixture of bacterial species from the same genus, such as Staphylococcus. Some members of this genus are harmful pathogens, while others are not. Would a selective medium alone be a good tool to separate the harmful species from the non-harmful species
Answer:
No. There are different types of media that may result useful to separate this species. Moreover, differential media can also be used to differentiate closely related species (e.g., by the change of color in the medium)
Explanation:
A selective media is a type of media capable of selecting for the growth of specific microorganisms while inhibiting the growth of others. For example, if a bacterium is resistant to an antibiotic (e.g., ampicillin), then this compound can be added to the medium in order to select bacteria that are resistant and simultaneously inhibit the growth of susceptible bacteria. Moreover, a differential media is a media that contain chemical indicators that allow certain microorganisms to be visually identified by the appearance of the colony and/or its surrounding media. Differential media have into account certain biochemical characteristics of target microorganisms (e.g., the change of color in the medium which is associated with the ability of the microorganism to ferment sugar molecules).
What is the most likely reason that nonmetals are electrical insulators?
Since valence shells are mostly empty in nonmetal atoms, the atoms attract and hold any electrons they can in
order to fill their valence shells.
O Since valence shells in nonmetal atoms are almost full, the atoms attract electrons and hold them tightly to fill their
valence shells,
O Since all nonmetals have valence shells that are full, they hold electrons tightly to avoid changing.
Since all nonmetals have valence shells that are completely empty, they do not attract or release any electrons.
Mark this and return
Save and Exit
Nexo
Submit
Answer: Since valence shells in nonmetal atoms are almost full, the atoms attract electrons and hold them tightly to fill their valence shells.
Explanation:
Electric current can flow freely in a conductor but in an insulator, it cannot flow freely.
The most likely reason that nonmetals are electrical insulators is since valence shells in nonmetal atoms are almost full, the atoms attract electrons and hold them tightly to fill their valence shells.
Answer:
Since valence shells in nonmetal atoms are almost full, the atoms attract electrons and hold them tightly to fill their valence shells.
Explanation:
Melanie has had a recent cold with symptoms of runny nose, sneezing, coughing, congestion, and malaise. Today, she is concerned that she has a sharp pain in her chest. She goes to see her health care provider, and is diagnosed with costochondritis, an inflammation in the cartilage between the ribs. From your reading related to cellular injury and adaptations as well as inflammation, answer the following questions:
a. What anatomic problem most likely leads to costochondritis?
b. What is the injury in costochondritis?
c. What would the acute inflammatory response look like?
Answer:
a. Viral infections may lead to inflammation between the ribs (i.e., costochondritis)
b. Viral infection
c. Viral infection may lead to the influx of chemical mediators (cytokines), increased blood flow, and movement of plasma and white blood cells (leukocytes) from the blood into the injured site
Explanation:
Costochondritis is a painful condition caused by the inflammation of the cartilage that joins the ribs to the breastbone (this joint is known as the “costochondral joint”). Costochondritis is caused by inflammation of the costochondral joint, which may be triggered by multiple causes including, among others, viral/bacterial/fungal infections, exercise or strenuous activity, chest trauma, osteoarthritis, presence of tumors, etc. Acute inflammation is the immediate immune response of the body to harmful stimuli (e.g., viral infections), which is characterized by the increased movement of white blood cells (such as neutrophils and macrophages) that rapidly travel from the blood into the injured area. This plasma contains chemical mediators like pro-inflammatory cytokines which are secreted from immune cells (e.g., Th1 cells, CD4+ cells, macrophages) in order to promote inflammation.
What did you remember to include in your paragraph?
Fats provide long-term energy storage.
Fats provide insulation and protection.
Phospholipids are the main component of cell membranes.
Waxes provide a waterproof coating on leaves and feathers.
Steroids are part of cell membranes and chemical messengers in the bod
Answer:
all of them are correct but I think option 2 is most likely
Answer:
all
Explanation:
Palm trees grow in warm climates. The climate in Alaska where the scientist found the fossil is very cold. Since the palm tree died millions of years ago, what is most likely true about the Alaska's climate?
How are meiosis and mitosis similar?
Answer:
b
Explanation:
they both produce new cells.
Answer:
heyyy
B is the answer
they produce new cell
What is the result of a mutation during meiosis
Answer:
There's a change in the DNA sequence
Explanation:
If a mutation occurs in cells that will make gametes by meiosis or during meiosis itself, it can be passed on to offspring and contribute to genetic variability of the population. Mutations are the sole source of genetic variability that can occur in asexual reproduction. But the effects of mutations can vary widely, from being beneficial, to having no effect, to having lethal consequences, and every possibility in between.
a) Eukaryotic cell : Nucleus :: Prokaryotic cell : ______
Where do stars form?
Answer:
Stars are formed within clouds of dust...
8
Michelle has been given a microscope slide that contains a eukaryotic cell and a prokaryotic cell. What should she look for to
distinguish the eukaryotic cell from the prokaryotic cell?
OA.
ribosomes
ОВ.
cell membrane
OC.
nucleus
OD
cytoplasm
Reset
Next Question
Answer:
Nucleus
Explanation:
Because an only prokaryotic cell has a true nucleus
In addition to their role as building blocks for proteins, amino acids are used as precursors for the biosynthesis of a wide variety of molecules. Match the amino acids with the molecules for which they act as precursors. Histamine Epinephrine Scrotonin Glutathione Heme NAD(H)tyrosine histidine eysteine glycine glutamate tryptophan
Answer:
Amino acids are the building blocks or monomers of proteins. These are the molecules that act as the precursors for the biosynthesis of various hormones some other molecules of our body. these amino acid molecules for by the process of protein synthesis.
The given amino acids are precursors of the following molecules-
1. Histamine - Histidine
2. Epinephrine - Tyrosine
3. Serotonin - Tryptophan
4. Glutathione - Cysteine, Glutamate and Glycine
5. Heme - Glycine
6. NAD(H) - Tryptophan
Look at the picture of a leaf-cutter ant.
Based on this picture, which prediction can be made about leaf-cutter ants?
A. They eat trees for energy.
B. They produce hundreds of offspring at a time.
C. They cannot see color.
Answer:
The Answer is -They are strong enough to lift an entire leaf
Explanation:
Based on the picture of a leaf-cutter ant. The prediction that can be made about leaf-cutter ants is they are strong enough to lift an entire leaf. The correct option is D.
What is a leaf-cutter ant?Leaf-cutter ants develop their fungus crop by using leaves as fertilizer. By providing freshly cut leaves, they develop fungal gardens while guarding against pests and molds and removing dead materials. The fungus serves as a food supply for the ant larvae in exchange.
These eager ants may seem to bite off more than they can chew, but in reality, they are capable of carrying leaf fragments that are nearly 50 times heavier than themselves. That's like a person pushing a car around.
Therefore, the correct option is D. they are strong enough to lift an entire leaf.
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25 POINTS!! If you chemically synthesized the DNA molecule ATGCCGAATG from individual nucleotides, what would be present in solution besides the DNA?
A. phosphate
B. RNA
C. lipids
D. glucose
Answer:
option a
Explanation:
1. Explain how an environment would rebound after a volcanic eruption (include the type of
succession and pioneer species).
Explanation:
Volcanoes produce geothermal energy, which are used to generate heat. When a volcanoes erupts, a large amount of ash is ejected. This ashes can be extremely damaging to the environment in the brief period, but over time, the ash layer, which includes many valuable minerals, will be transformed into a highly productive soil.
The morphogical characteristics of plant plantain...
Answer:
gbcghhhhbhhhhhhhhhhgffggh
Hexokinase is an enzyme that catalyzes the ATP‑dependent phosphorylation of glucose to glucose‑6‑phosphate.
a. True
b. False
Answer: The statement is TRUE
Explanation:
HEXOKINASE is an enzyme that catalyzes the phosphorylation of glucose to glucose‑6‑phosphate in glycolysis. The main function of glucose is to provide energy for the tissues. The basic pathway through which energy is gotten from glucose is through GLYCOLYSIS. The glycolytic pathway is made up of enzyme catalyzed reactions that leads to the conversion of glucose to pyruvate in the presence of oxygen or lactate in the absence of oxygen.
The first step in glycolysis is catalyzed by HEXOKINASE, an enzyme with broad specificity that catalyzes the phosphorylation of six-carbon sugars. Hexokinase phosphorylates glucose using ATP as the source of the phosphate, producing glucose-6-phosphate, a more reactive form of glucose.
Therefore the above statement is TRUE.
In snapdragons petal color is an incomplete trait. If RR results in a red flower and rr results in white flowers, Rr would result in ____________ flowers. Group of answer choices red flowers with white splotches pink striped flowers red and white flowers
Answer:
Pink Striped flowers
Explanation:
Incomplete traits result in a "mixing" of 2 traits. So with a Rr individual, there will be pink striped flowers.
Answer:
Rr would result in a pink and white flower.
Explanation:
The traits of each parent are neither dominant or recessive. The alleles do not blend, but partial dominance is often referred to as “blending” because traits are mixed and appear to be “blended.” In this case, it will be BOTH pink and white.
Old is Gold - B.Sc. 2nd year 203
2074/What is mutation? Explain different types of mutation involving changes in
chromosome number and chromosome structure?
Answer:
Mutation is the changing of the structure of genes resulting in a varied form that may be transmitted to subsequent generations, caused by the alteration of single base units in DNA or the deletion, insertion, or rearrangement of larger sections of genes or chromosomes.
A silent mutation is a mutation where the codon still corresponds to the same amino acid. The sequence of amino acids is not changed so the protein that gets made is the same as the wild type, or normal protein.
A missense mutation changes the codon so that it codes for a different amino acid.
Finally, a nonsense mutation causes protein creation to stop early, which makes a non-functioning protein.
Substitution means that one base is exchanged for another. This is kinda like having a substitute teacher. The sub isn't your normal teacher, but they are still a teacher. A protein that is made with a substitution might still function normally, or it could be nonfunctional.
Deletion is kinda self-explanatory. It happens when a base is deleted or, in other words, is just missing.
Finally, insertion means an extra nucleotide is added.
Explanation:
Hope it helps .
what's the right blood cell
Which characteristics is common to all three groups of reptiles?
They use claws for defense.
They protect their eggs.
They have moveable eyelids.
They are ectotherms.
They are ectotherms.
hope it is helpful to you
Ectotherms because they are all cold blooded
PLEASE HELP ASAP!!!!!
Answer:B andC
hope it helps
What are the possible gametes for the individual with the genotype: YYSs?
Answer:
Hey mate I have wrote the answer
see it in the given picture!!!
Explanation:
Hope this help you
The possible gametes for the individual with the genotype YYSs are YS, Ys, YS, and Ys.
What are genotypes?An organism's genotype comprises all of its genetic components. The genotype is another name for an individual's alleles or genetic variations within a certain gene or genetic area.
There are three different genotype types: homozygous dominant (PP), homozygous recessive (pp), and heterozygous (Pp). Both homozygous dominant and heterozygous genotypes exhibit the same features. The formula 2n, where n is the number of heterogeneous alleles present in the genotype, is used to determine the total number of gametes that are produced by a specific genotype.
Thus, the possible gametes for the individual with the genotype YYSs are YS, Ys, YS, and Ys.
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