Answer:
Explanation:
Based on this information it can be said that this formation between the islands and the mainlands will most likely cause an increase in gene flow between the bird populations. Since the islands and the mainland are now connected birds from both these two different habitats will begin mating and producing progeny, thus causing gene flow to increase between these species.
Answer:
An increase in gene flow between the birds population.
Explanation:
Genetic factors determine how susceptible a person is to developing obesity, but __________ factors such as a consistently healthy lifestyle and a healthy diet can play a significant role as well.
a. modulation
b. genomic
c. epigenetic
d. endogenous
Hi there! Hopefully this helps!
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The answer is: A, Modulation.
The non-genetic factors such as eating habits or physical activity which lead to a healthy lifestyle and diet, greatly modulate the particular risk for developing obesity. These modulation factors are thought to possibly interact with the genetic predisposition for obesity through epigenetic mechanisms.
1. Imagine that you are a horticulturist working in a commercial greenhouse. Based on what you learned from this lab, how would you manipulate these factors in order to maximize photosynthesis? Water availability Light intensity Carbon dioxide concentration Plant population density
Answer:
Explanation:
Greenhouse is experiment is an experiment under a controlled environment where the environment can be varied according to the desire of the scientist.
For photosynthesis efficiency, Water availability Light intensity Carbon dioxide concentration Plant population density can be manipulated.
Optimum water supply needed for photosynthesis will be added, plant will be expose to adequate Carbondioxide that will be enough to bring about efficiency, the light intensity will be controlled to fits the requirement and reduced when necessary and plant population will be reduced to the number of plant the available resources can carry to bring about efficiency.
The biceps femoris muscle's name gives us information about it. What does the word "femoris" in its name tell us? A. Its general location B. Its action C. Its overall shape D. The number of attachments it has E. Its general size (compared to other muscles) F. The direction of its muscle fibers
Answer:
the answer is D
Explanation:
The prefix bi indicates that the muscle has two origins
The biceps femoris muscle of the leg derives its name from having two heads of origin, long and short
The short-term controls of blood pressure, mediated by the nervous system and bloodborne chemicals, primarily operate via all but which of the following?
a. reflex arc associated with vasomotor fibers
b. reflex arcs involving baroreceptors
c. altering blood volume
d. centers in the medulla oblongata and the pons
Answer:
c. altering blood volume
Explanation:
The sympathetic nervous system acts to modulate blood pressure during short-term periods by modifying arterial pressure. The catecholamine hormone levels may be associated with an increase in the blood pressure by narrowing the blood vessels. Catecholamines are hormonal neurotransmitters released by the adrenal glands. These hormones derive from the metabolism of tyrosine amino acids and include, among others, adrenaline, noradrenaline and dopamine.
Match the foods with their functions in the living organisms they come from.
1. tuna
2. milk
3. potato
4 . lettuce
5. black bean
6. egg
A. leaf from a plant; site of photosynthesis
B. a seed containing the embryo and food reserve
C.a high nutrient liquid produced by mammals
D.energy storage for plant
E. an energy supply for a growing embryo
F.the skeletal muscle used for voluntary movements
Answers:
1 - F
2 - C
3 - D
4 - A
5 - B
6 - E
Explanation:
tuna - the skeletal muscle used for voluntary movements.
milk - a high nutrient liquid produced by mammals.
potato - energy storage for plant.
lettuce - leaf from a plant; site of photosynthesis.
black bean - a seed containing the embryo and food reserve.
egg - an energy supply for a growing embryo.
When glycogen phosphorylase is phosphorylated Group of answer choices its activity decreases. its activity increases. its activity is unaffected. none of these because that enzyme doesn't get phosphorylated.
Answer:
The correct answer is that its activity increases.
Explanation:
Glycogen phosphorylase comes under the category of phosphorylase enzymes. The mentioned enzyme catalyzes the rate-limiting step in the process of glycogenolysis within the animals. The sequential phosphorolysis of glycogen to discharge glucose-1-phosphate is catalyzed by the enzyme glycogen phosphorylase. Therefore, glycogen phosphorylase plays an essential part in the use of liver and muscle reserves of glycogen. After undergoing phosphorylation, the activity of the enzyme increases.
A compound synthesized by bacteria or fungi that destroys or inhibits the growth of other microbes is a/an:__________.
a. synthetic drug
b. antibiotic
c. antimicrobial drug
d. competitive inhibitor
Answer:
antimicrobial drugs
Explanation:
An antimicrobial is a substance that kills or inhibits the growth of microorganisms such as bacteria, fungi, or protozoans.
Answer:
[tex]\boxed{Option C}[/tex]
Explanation:
A compound synthesized by bacteria or fungi that destroys or inhibits the growth of other microbes is an anti-microbial drug. Anti means "against" so anti microbes mean against microbes. Antimicrobial drugs are synthesized by bacteria and fungi and are used against microbes.
A 4-year-old child arrives at the clinic with his mother. The mother tells you that she recently moved in with her new boyfriend and her son has been very quiet lately
the number of possible genetically different gametes for an organism equals 2n where n is the number of pairs of chromosomes if an organism has six pairs of chromosomes how many different gametes ca it produce
A. 64
B. 256
C. 32
D. 128
Answer:
64
Explanation:
After duplication, at what point does a cell become two cells with identical DNA? starting in prophase end of anaphase end of cytokinesis
Answer:
The correct answer is - end of cytokinesis.
Explanation:
Cytokinesis :- a procedure that partitions the cytoplasm and plasma layer of a cell, bringing about two indistinguishable cells that contain their own DNA, nucleus, nuclear membrane, and plasma membrane.
During the last phase of the cell cycle, cytokinesis permits the cell to complete the process of isolating, making two cells with indistinguishable duplicates of DNA
The cell squeezes in the equator area with the assistance of a ring of contractile protein filaments. The formed cleavage furrow develops until the two cells squeeze off totally.
Thus, the correct answer is - end of cytokinesis.
Answer:
end of cytokinesis
Explanation:
The frequency of purple pollen cones is 0.34 in a population of Virginia pine (Pinus virginiana). In the same population, the frequency of four needles per fascicle is 0.67.
If these two traits are independent, what is the probability that a single pine tree has both purple pollen cones and four needles per fascicle? (calculate to 2 decimals)
Answer: P(p and f) = 0.23
Explanation: The frequency of a specific trait is also the probability of that trait appearing in that population. So:
Probability of purple pollen cones: P(p) = 0.34
Probability of four needles per fascicle: P(f) = 0.67
Using multiplication rule:
P(p and f) = P(p)*P(f)
P(p and f) = 0.34*0.67
P(p and f) = 0.23
The probability of having both purple and four needles is 0.23
What type of mutation occurred in the following? Normal allele GGAAUGAAACAGGAACCC Mutant allele GGAAUGAAAUCAGGAACCC
Answer:
Insertion
Explanation:
Mutation is a sudden change that occurs in the genome of an organism that is heritable i.e it can be transfer from parent to offspring. There are different types of mutation Missense, nonsense, Insertion.
Insertion is a type of mutation that involves addition of extra Nitrogenous base that was not originally in the DNA strand. This will increase the number of the DNA strand and may also affect the function of protein to be formed
The mutant strand contains Uracil(U) which was not in the normal DNA strand which indicates insertion type of mutation.
GGAAUGAAACAGGAACCC -Normal
GGAAUGAAA U CAGGAACCC- Mutant
What is believed to be the main reason for the poor cloning efficiency of the nuclear implantation method?
Answer: The options are not given, here are the options.
A) the lack of an effective method to induce division of the product of the somatic cell fusion product
B) the difficulty in extracting nuclei from somatic cells
C) the lack of an efficient method for injecting the somatic cell nucleus into the egg cell
D) variations in the completeness of epigenetic programming of the somatic cell nucleus
The correct option is
D) variations in the completeness of epigenetic programming of the somatic cell nucleus
Explanation:
Nuclear transplantation method is the method in which the nucleus from a donor cell is removed and inserted in the target cell in which also it's nucleus has been removed or enucleated. The nuclear transplantations has slowed
embryologists to interfere the development of an organism and to study nucleus to direct development. It has been used for the cloning of several species.
Nuclear transplantation has failed in cloning because variations in the completeness of epigenetic programming of the somatic cell nucleus.
Drag each tile to the correct box
Place the items in order from highest to lowest degree of internal organization
tissue
organ system
HID
&
Answer:
cell
tissue
organ
organ system
I hope this helps
Order from highest to lowest degree of internal organization are organ system, organ, tissues, cell.
What are the characteristic feature of tissue?A group of cells with similar structure and performing specific function called as tissue.
In animal it can be up four types such as connective, muscle, nervous, and epithelial tissue.
Connective tissue is made up of cells and gel like substances. Except lymph and blood all tissue contains collagenous fibers.
Fibers Of connective tissue help in binding of bones, movement of lungs, physical support to cell.
Muscle tissue are up different types like skeletal, cardiac and smooth muscle.
Skeletal muscle help in binding of tendons to bones followed by movement.
Cardiac muscle in heart and help in contraction to pump blood.
Smooth muscle in the intestine helps in movement of food through the digestive tract.
Nervous tissue is present in the brain, spinal cord, and peripheral nerves, made up of neurons.
Epithelial tissue are present on the surfaces the skin, the trachea, the reproductive tract, provide protection to organs.
Learn more about tissues, here:
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_____ combines the isolated gene of one organism with the DNA of a different organism.
Answer:
A transgenic, or genetically modified, organism is one that has been altered through recombinant DNA technology, which involves either the combining of DNA from different genomes or the insertion of foreign DNA into a genome.
Explanation:
Answer:
Recombinant DNA
Explanation:
Rafael models a longitudinal wave using a coiled-spring toy. If he wants to model a longitudinal wave that carries more
energy, how should he move the end of the spring?
:::
O side to side, using larger motions
O side to side, using smaller motions
O forward and back along the spring, using larger motions
O forward and back along the spring, using smaller motions
Answer:
O forward and back along the spring, using larger motions
Explanation:
Longitudinal wave that carries more energy, he move the end of the spring by pushing the spring forward and backward directions using larger motion that creates two regions in the spring, the crowded area known as compression and more distance between parts of the spring known as rarefaction. If there is more compression in the spring so there is a lot energy present in the spring. So it is only possible when using larger motions in the spring.
Answer:
C
Explanation:
edge 2023
The animation demonstrates several traits that are characteristic of the primate order. In particular, it shows how primates have several features that enhance their vision and their sense of touch and dexterity. These characteristics make primates particularly well adapted to what type of environment?
Answer:
Arboreal Habitats.
Explanation:
The word arboreal has its roots in the Latin word arboreus, which means "relating to trees."
The word arboreal speaks to not just to animals that are adapted to the tree environment, but also to all other things that look like or take the branching form of a tree. An example would be a diagrammatic representation of one's family geology.
Examples of animals that live on trees are:
KoalaMajority of the Avian Species (especially those that can fly)Sloths etc.Cheers!
Oocysts of Toxoplasma gondi are excreted in the feces of : 1.sheep 2.human 3. cat 4. all of above
Answer:
cat
Explanation:
They are excreted in the feces of the Felidae family, such as cats. The disease can be passed to humans and other animals, but in reference to ur question, cat is the answer.What kind(s) of cells can develop from totipotent stem cells?
O A. Only cells that are identical to the original stem cell
B. Only cells that are closely related to the original stem cell
C. Any cells of the human body, but not cells of the placenta
D. Any cells of the human body or the placenta
Answer:
D.
Explanation:
Totipotent cells can make any of the 220 cell types in an embryo, as well as the cells found in a placenta!
Any cells of the human body or the placenta can develop from totipotent stem cells. Therefore, the correct option is D.
Totipotent stem cells have the unusual ability to differentiate into any type of human body cell, including placental cells. They have the ability to generate all types of cells, including endoderm, mesoderm, and ectoderm, the three basic germ layers. Because of their potential for development, totipotent stem cells can produce both extra-embryonic and embryonic tissues. Although cells produced from totipotent stem cells can differentiate into any cell type, due to maturation and specialization processes, they are not always identical to the original stem cell.
Therefore, the correct option is D.
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The chemicals that are released from the hypothalamus, the gonads, and the adrenal cortex are called ________, whereas the chemicals released by bioelectrical impulses throughout the brain are called ________. 1. synapses; hormones 2. neurotransmitters; synapses 3. inhibitory communicators; dendrites 4. hormones; neurotransmitters
Answer:
Option 4: hormones; neurotransmitters.
Explanation:
Hormones are the body's chemical messengers that are released from the hypothalamus, the gonads, and the adrenal cortex. They are released into the bloodstream where they are transported to target organs and tissue.
Neurotransmitters are chemicals released by neuron which stimulates other neurons, muscle cells and gonad cells allowing for the passage of impulse from one cell to another one.
what is ecological footprint
Explanation:
Ecological footprint:
Is a Measure the area required by an individual, population or activity of biologically produced land and water to produce all the resources it consumes and absorb the waste it generates, using prevailing technology and resource management practices. Hope this helps and have a great day! Good luckWhat is a recombination? How is it different from mutation
Consider that it takes, on average, 24 hours (or 1,440 minutes) for each onion root tip cell to complete the cell cycle. You can calculate the amount of time spent in each phase of the cell cycle form the percentage of cells in that stage.
Percentage of cells in stage X 1,440 minutes = ________ minutes of cell cycle spent in stage.
Answer: Hope this helps you :)
To calculate the time spent on each stage of the cell cycle, we need to know the total time required to complete the cycle and the percentage of cells that are in that stage. Then, take the product of both values.
--------------------
According to the statement,
The percentage of cells in a stage X 1,440 minutes = Time in minutes of cell cycle spent in the stage.
So, to know how much time is spent in each stage of the cell cycle, we need to know the time it takes for a cell to complete the whole cell cycle, and how many cells there are.
We already know that it takes, on average, 24 hours (or 1,440 minutes) for each onion root tip cell to complete the cell cycle.
Now, we should count the number of cells. Since I do not have a slide, I will assume that there are at least 50 cells, and from that 50 cells present in the slide, 25 are in the same stage. Let us say that the 25 cells are in the prophase.
So, considering a total number of 50 cells (100%), 25 cells equals 50% of the total.
Now, we know that
Time required to complete the cell cycle = 1440 minutesPercentage of cells in the prophase = 50%
Minutes spent in prophase = % of cells in prophase x 1440 minutes
Minutes spent in prophase = 50% x 1440 minutes
Minutes spent in prophase = 0.5 x 1440 minutes
Minutes spent in prophase = 720 minutes
According to this example, cells spend 720 minutes of their time in the prophase.
Now, I suggest you count how many cells do you have in your slide, and recognize how many are in each of the stages. Then you will be able to calculate the real-time spent per stage.
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Which of the following changes to waterways is only the result of human activity?
a.
erosion
b.
temperature fluctuations
c.
flooding
d.
chemical pollution
Please select the best answer from the choices provided
A
B
C
D
Answer:
D.Chemical pollution
Explanation:
Because erosion,flooding and temperature fluctuations is natural disaster and chemical pollution is made by human activity (i hope this help) ☺️
Answer: d edge 2021
Explanation:
Which describes bedrock? consists of solid rock lies directly above the soil layer does not contain weathered rock forms from decomposed material
Answer:
consists of solid rock
Explanation:
Bed rock are solid rock material usually below the soil surface.
They are found at the ocean floor under sediment and other solid materials. Saprolite are bed rocks that have been weathered they are found above the bed rock overlaining it,
saprolite have different composition because it has gone through chemical weathering.
Above saprolite are soil and other loosed particle.
when the depth and structure of a bed rock is determined it help tell about the history of a place.
Answer:
a
Explanation:
Which kind of joint allows the arms to swing in circles? hinge
ellipsoidal
ball-and-socket
sliding
Answer:
hinge
Explanation:
BALL AND SOCKET Explanation:
The Frank-Starling law of the heart states that stroke volume is proportional to ________.
Answer:
end diastolic volume
Explanation:
The Frank-Starling Law states that the stroke volume of the left ventricle will increase as the left ventricular volume increases.
QUESTION 20 "Nitrous acid causes all possible transitions (A<-- -->G, C<-- -->T). If a protein has an alanine at position 65, what amino acid(s) would be likely to replace alanine as a result of nitrous acid mutagenesis
Answer:
Explanation:
Nitrous acid mutation occurs when a Nitrogenous base is replaced by a keto group.
Alanine is replaced by hypoxanthine,
Cytocine is replaced b Uracil
Guanine is replaced by Xanthine.
Nitrous mutation often affects Adenine, Cytocine and guanine. The Nitrogenous base is changed into another substance(keto group)
Alanine at position 65 would be replace by hypoxanthine a keto group which is a form of nitrous mutation.
Other forms of amino acid mutation
Mutation of amino acid nitrogenous base can either be transition or transversion.
Transition is the substitution of a purine base by another purine base. Since purine are Adenine and Guanine
Pyrimidine is cytocine and thymine or Uracil. Adenine can be substituted for by guanine or guanine by adenine
E.G A - G now G - A where Guanine substitute Adenine
Whole transversional substitution can also occur which involve a purine been substitued for by a pyrimidine or pyrimidine by a Purine.
A - G
Now C-G where cytosine substitute Adenine.
A farmer plants Bt cotton that is genetically modified to produce its own insecticide. Of the cotton bollworms feeding on these Bt plants, only 8% survive unless they have at least one copy of the dominant resistance allele R that confers resistance to the Bt insecticide. When the farmer first plants Bt cotton, the frequency of the R allele in the cotton bollworm population is 0.4. What will the frequency of the resistance allele be after one generation of cotton bollworms fed on Bt cotton
Answer:
0.6
Explanation:
According to hardy-weinberg principle,
P2+2pq+q2=1
P+q=1
q=1-p
Given that Allele R frequency is 0.4
and p represent the dominant allele
P=0.4
P2=0.4^2 = 0.16 for genotypic frequency
Since p+q=1
q=1-p
where q stands for recessive allele r frequency and q2 stands for genotypic frequency for allele r
q= 1-0.4= 0.6
q2=0.6 ^2
q2=0.36
Hardy-Weinberg principle states that are used to calculate the genetic variation of a population at equilibrium.
The frequency of the resistance allele in the cotton bollworm is 0.6.
Hardy-Weinberg equation can be given as:
P² + 2PQ + Q² = 1
where,
P = dominant allele (R)
Q = recessive allele (r)
Frequency of R allele = 0.4
From the equation:
P + Q = 1
or,
Q = P - 1
Genetic frequency of the R allele = P² = 0.4 x 0.4 = 0.16
Substituting the values:
Q = 1 - 0.4
Q = 0.6
Q² = 0.36
Thus, the frequency of the resistance allele will be 0.6.
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Match each image with the life function the organism is performing.