Answer:
positive feedback (exacerbating feedback, self-reinforcing feedback) is a process that occurs in a feedback loop which exacerbates the effects of a small disturbance.
which of th following processes releases carbon dioxide as waste
Answer:
Cellular respiration
Explanation:
Cellular respiration releases carbon dioxide and water as waste products.
The following diagram represents the reaction of methane with oxygen gas to form carbon dioxide and water.
The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs?
Answer:
It stays the same
Explanation:
If you count each in both pictures, none are added nor removed.
Answer:
stays the same
Explanation:
Which statement summarizes the relationship between DNA, proteins, and amino acids?
A. The DNA molecule is a protein formed by amino acids that are linked together by peptide bonds.
B. The type of protein that composes DNA codes for the twenty different amino acids.
C. The sequence of amino acids in DNA determines the type of protein formed during protein synthesis.
D. The sequence of nucleotides in DNA codes for specific amino acids which bond to form proteins.
Answer:b
Explanation:
The statement (B) is correct. The type of protein that composes DNA codes for the twenty different amino acids.
What are proteins?Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues.
Moreover, proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs.
Therefore, a molecule made up of amino acids. Proteins are needed for the body to function properly. They are the basis of body structures, such as skin and hair, and of other substances such as enzymes, cytokines, and antibodies.
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A biologist examines a series of cells and counts 160 cells in interphase, 20 cells in prophase, 6 cells in prometaphase, 2 cells in metaphase, 7 cells in anaphase, and 5 cells in telophase. The complete cell cycle requires 24 hours. Match the average duration to the appropriate cell cycle stage in these cells. M phase prophase metaphase telophase 4.8 hours 14.4 minutes 2.4 hours 36 minutes
Answer:
M phase: 4.8 hr
Prophase: 2.4 hr
Prometaphase: 0.72 hr
Metaphase: 0.24 hr
Anaphase: 0.84 hr
Telophase: 0.6 hr
Explanation:
Mitosis, also known as M phase, is the process of nuclear division after interphase, which is followed by cytoplasmic division via cytokinesis. Mitosis can be subdivided into the following phases: Prophase, Prometaphase, Metaphase, Anaphase, and Telophase. In this case, 160 cells are in interphase (for a total of 200 cells), thereby 40 cells are in mitosis >> 200 - 160 = 40 cells. Since the complete cell cycle requires 24 hours, it is possible to calculate the average duration of each phase:
M phase: 40/200 = 0.2 x 24 hr = 4.8 hr
Prophase: 20/200 = 0.1 x 24 hr = 2.4 hr
Prometaphase: 6/200 = 0.030 x 24 hr = 0.72 hr
Metaphase: 2/200 = 0.01 x 24 hr = 0.24 hr
Anaphase: 7/200 = 0.035 x 24 hr = 0.84 hr
Telophase: 5/200 = 0.025 x 24 hr = 0.6 hr
Write each phrase into the appropriate category.
a. cross between organisms that are the same for two traits
b. the cross was performed by Mendel using pure-breeding lines
c. cross between organisms that differ for three traits
d. cross between organisms that are the same for three traits
e. cross between organisms that differ for two traits
dihybrid cross trihybrid cross both none
Answer:
a. none
b dihybrid and trihybrid crosses (both)
c. trihybrid cross
d. none
e. dihybrid cross
Explanation:
A dihybrid cross can be defined as a mating experiment between two different varieties/lines that differ in two observed phenotypic traits, while a trihybrid cross is a cross between two varieties/lines that differ in three traits. For example, Mendel crossed two pea plants that differed in seed color (yellow and green) and seed shape (wrinkled and round). Mendel's experiments consisted of dihybrid and trihybrid crosses for different phenotypic traits. From these mating experiments, he observed dihybrid F1 plants produced 9:3:3:1 ratio of phenotypes in the F2 generation.
Goats can either be polled or horned. The pulled, or no horn, trait (P) is dominant to the horned (p) trait. Another trait in goats are wattles, which are hair covered structures on their necks. Even though most goats do not have wattles, having wattles (W) is dominant to not having wattles (w). A breeder crosses a polled, wattled male goat with a polled, wattled female goat. Some of the offspring have horns and no wattles. Perform a cross of the parental genotypes to find the phenotypic ratios of the offspring.
Answer:
Pulled and wattled = 9/16
Pulled and no wattle = 3/16
horned and wattled = 3/16
horned and no wattle = 1/16
Explanation:
Pulled = P, Horned = p
Wattled = W, no wattle = w
Polled, wattle goats = P_W_
Since they produced offspring with horns and no wattles (ppww), it means both parents have the recessive allele for each trait. Hence, they are both heterozygotes with PpWw as genotypes.
PpWw x PpWw
Genotypes ratio of the offspring:
P_W_ - 9/16
P_ww - 3/16
ppW_ - 3/16
ppww - 1/16
Phenotype ratio of the offspring:
Pulled and wattled = 9/16
Pulled and no wattle = 3/16
horned and wattled = 3/16
horned and no wattle = 1/16
(See the attached image for the Punnet's square)
Some alleles of a gene are dominant to others masking the effect this other alleles.
The polled, or no horn, trait (P) is dominant to the horned (p) trait.
Having wattles (W) is dominant to not having wattles (w).
A breeder crosses a polled, wattled male goat with a polled, wattled female goat.
The phenotypic and genotypic ratios would be
Polled and wattled = P_W_ = 9/16Polled with no wattle = P_ww = 3/16horned and wattled = ppW_ = 3/16horned with no wattle = pwpw = 1/16Parent genotype --- polled, wattled male and female goat -- P_W_
As the cross produced offspring with horns and no wattles (ppww), it shows both parents have the recessive allele for each trait.
Hence, they are both heterozygotes with PpWw for the traits.
Parent genotypes: PpWw x PpWw
PW Pw pW pw PW Pw pW pw
PW Pw pW pw
PW PPWW PPWw PpWW PpWw
Pw PPWw PPww PpWw Ppww
pW PpWW PpWw ppWW ppWw
pw PpWw Ppww ppWw ppww
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In science, theories____?
Answer:
have limited explanatory power
Which of the following activities were asked about when determining activity level?
a. stretching and flexibility.
b. specific exercises like running, swimming, and biking.
c. moderate household chores.
d. resistance (weight) training.
e. sedentary activities like watching TV and computer use.
f. moderate exercise that causes increased heart and breathing rate.
Answer:
b. and f.
Explanation:
The two main categories of activities that are asked about are specific exercises like running, swimming, and biking. As well as moderate exercise that causes increased heart and breathing rate. These are asked about because they are separate physical activities from an individual's everyday life whether it is done as a hobby or for health reasons. They tend to influence the physical status and are therefore important when determining activity level. Other tasks are usually not included since they are considered normal for survival as everyday tasks.
As per the observation, the correct answers about the determining activity level are options:
b. specific exercises like running, swimming, biking, and f. moderate exercise that causes increased heart and breathing rate.
The primary classes of sports which are requested approximately are unique sporting activities like running, swimming, and biking. As properly a slight workout that reasons expanded coronary heart and respiration rate.
These are requested approximately due to the fact they're separate bodily sports from an individual's regular lifestyles whether or not it's miles executed as an interest or for fitness reasons. They have a tendency to steer the bodily reputation and are consequently critical while figuring out pastime level. Other responsibilities are typically now no longer covered because they're taken into consideration every day for survival as regular responsibilities.
What is the activity level?There are three essential approaches to describing the depth of an activity – vigorous, moderate, and gentle.
Thus it is clear that the following activities were asked about when determining activity levels were b. specific exercises like running, swimming, and biking. f. moderate exercise that causes increased heart and breathing rate.
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Which of the following is TRUE about alleles? Which of the following is TRUE about alleles? The phenotype of the individual will always indicate with certainty the alleles of the individual. An individual will only carry one version of an allele. Alleles come in two forms, the good form and the bad form. Individuals carry both forms of each allele. An allele is a variant form of a gene.
Answer:
An allele is a variant form of a gene.
The phenotype of the individual will always indicate with certainty the alleles of the individual
Explanation:
An allele is the alternate form of a gene example is allele A, allele a
While writing the genotype of an individual the allele is always seen, it usually written in pairs example is AA , Aa, aa, SS
The phenotype of an individual will reveal the allele such person have example is an individual with the sickle cell having allele s through the appearance of such individual one could know if such person posses the allele.
is natural selection the only component of darwin's theory of evolution
In holly, serrated leaves are dominant to smooth-edged leaves, and red berries are dominant to green berries. Two holly plants heterozygous for both leaf edge shape and berry color are crossed together. Assuming that the two traits assort independently of one another, what proportion of the progeny will have serrated-edged leaves and green berries
CHGGYGYGYGUIYGUYGTUYGUYGUYG
The polled (hornless) condition (P) is dominant over horned (p). A certain polled bull is crossed to 3 cows.
1. With cow A, which is horned, a polled cow is produced;
2. With cow B, also horned, a horned cow is produced;
3. with cow C, with is polled, horned cow is produced.
What are the genotypes of the three calves and the four parents?
Answer and Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files
If right I’ll mark brainliest
PLEASE HELP!!!
• Humans have some...
A.) 7,000 cells
B.) I Million total cells
C.) 30-37 trillion cells
D.) 876 Quintillion cells
E.) we are not made of true cells
Answer:
C. 37.2 Trillion cells.
Explanation:
Which organelle/part of the cell would say this if it could speak? Sometimes I feel bloated with all the water I store.
1)nucleus
2)cell membrane
3)mitochondria
4)cytoplasm
5)vacuole
Tesla Il Dut your total time may nit exceed
Question 2
3
Potential Energy (J)Kinetic Energy (J)Velocity (m/s)
100
0
0
80
20
4.5
60
40
6.3
40
60
7.7
20
80
8.9
0
100
10
The relationship between Potential Energy and Kinetic Energy can be described as which of the following?
Answer
linear
5
B
inverse
С
parabolic
D
rational
Answer:
dcgfbhnjbhvgcfxfcgvm
Explanation:
Yall please answer quickly I promise to give brainliest!! I hope
you have a great day though (:
What is the advantage (benefit) of sexual reproduction?
Question options:
increases genetic variation
requires only one parent
faster growth rate
requires less energy
What are TWO advantages (benefits) of asexual reproduction? SELECT TWO!
Question options:
faster reproduction rate
increases genetic variation
requires less energy
requires two parents
Question 1 Answer: Increases genetic variation
Question 2 Answer: Faster Reproduction rate and Requires less energy (it is more time and energy efficient as a mate is not required)
PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!
Answer the HOT Question:
What do you think would happen to the skin if the dermis layer and the epidermis layer of the skin become separated?
To earn full credit
Restate the question
Define the epidermis
Define the dermis
Predict what you think will happen if they become separated*
What do you think would happen to the skin if the dermis layer and the epidermis layer of the skin become separated?
Answer
Explanation:
if the epidermis and the dermis say become separated you think will happen to your skin?
epidermis the surface AKA your skin.
dermis layer of tissues under your epidermis.
when the epidermis and the dermis are split and have a blister will come up in your skin.
I. Tick he correct answer.
1. Linen is obtained from.
a. Jute plant b. cotton plant c. flax plant d. hemp plant
Answer:
c. Flax plant is the answer
What is the main function of Krebs cycle?
Answer:
the main function of Krebs cycle is that it plays a big role in the process of energy production and biosynthesis.
Which was the earliest method used to determine stellar distances? A. supernovae B. parallax C. cepheids variables D. redshift measurement
Answer:
Parallax
Explanation:
Trust me I've done this
Answer:
parallax
Explanation:
Plato/Edmentum
In which layer of the cutaneous membranes are nerve ending located?
A. Fascia.
B. Subcutaneous.
C. Dermis.
D. Epidermis
Answer:
the answer is the dermis
Explanation:
The cutaneous membranes are nerve ending located in the Dermis hope this helps and i'm sorry if it's wrong.
How do molecules within organisms become rearranged and used as energy sources?
Answer:
in a chemical reaction, no atom is destroyed nor created
which is biotic
wind
iron gate
sunlight
leaf
Answer:
leaf
Explanation:
leaves come from trees, which are living things
Answer:
D. Leaf
Explanation:
If right I’ll mark brainliest
Answer:
Its blocked for me cause im on a school website can you right it out plz
Explanation:
How much energy is gained during vaporization
Answer:
Explanation:
energy known as the latent heat of vaporization is required to break the hydrogen bonds. At 100 °C, 540 calories per gram of water are needed to convert one gram of liquid water to one gram of water vapour under normal pressure. Water can evaporate at temperatures below the boiling
Answer:
Explanation:
energy known as the latent heat of vaporization is required to break the hydrogen bonds. At 100 °C, 540 calories per gram of water are needed to convert one gram of liquid water to one gram of water vapour under normal pressure. Water can evaporate at temperatures below the boiling…
Describe the immediate effect of the neurotoxin on the number of action potentials in a postsynaptic neuron. Predict whether the maximum membrane potential of the postsynaptic neuron will increase, decrease, or stay the same.
Answer:
Inhibit control over ions.
Explanation:
The immediate effect of the neurotoxin on the postsynaptic neuron is to inhibit control over ion concentrations across the cell membrane. The neurotoxin blocks nervous transmission at synapses which prevents the vesicles containing the neurotransmitter from fusing with the presynaptic membrane so the information does not transfer from one neuron to another and as a result the body is present at constant relaxation mode. The membrane potential of postsynaptic neuron will decrease due to neurotoxin.
To help meet the world's demand for food, which biotechnological
process is most likely to be used by agricultural industries?
O use of transgenic crops
O crop diversification
O spraying of organic herbicide
crop rotation
Answer:
use of transgenic crops
Explanation:
Since transgenic crops are genetically modified, the pros are that: there is more crop yield, increased nutrients, etc.
The use of transgenic crops is most likely to be used by agricultural industries. Hence, option A is correct.
What are transgenic crops?Crops that have undergone genetic engineering techniques to alter their DNA are referred to as genetically modified crops. Plant genomes can be modified physically or by transferring sequences contained in T-DNA binary vectors using Agrobacterium.
The goal of introducing a gene combination into a plant is to increase its productivity and usefulness. This technique offers benefits like extended shelf life, increased yield, improved quality, pest resistance, heat, cold, and drought tolerance, as well as resistance to a range of biotic and abiotic challenges.
The use of transgenic crops is most likely to be used by agricultural industries. Hence, option A is correct.
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20. Edward Lambert, an Englishman, was born in 1717. Lambert had a skin disorder characterized by very thick skin that was shed periodically. The hairs on his skin were very coarse, like quills, giving him the name "porcupine man." Lambert had six sons, all of whom exhibited the same traits. The trait never appeared in his daughters. In fact, the trait has never been recorded in females. Provide an explanation for the inheritance of the "porcupine trait
Answer:
The trait is Y-linked
Explanation:
The only plausible explanation behind the inheritance pattern shown by the porcupine trait is that it is Y-linked.
Y-linked traits are limited to the Y chromosome only, a sex chromosome that is peculiar to only the male gender. Chromosomally, females are XX while males are XY. Hence, only the male gender has the genetic capacity to inherit the porcupine trait. This is why only the sons of Edward Lambert, and never the daughters, exhibited the trait.
When 1 mole of PCl3 is produced, how many grams of Cl2 are produced ? Enter as a number correct to 2 decimal places
Answer:
[tex]212.70[/tex] grams
Explanation:
Weight of one mole of Cl2 in grams = [tex]70.9[/tex]
Weight of one mole of PCl3 in grams = [tex]137.33[/tex]
Weight of one mole of chlorine atom in grams = [tex]35. 453[/tex]
From one molecule of PCl3, three molecule of chlorine gas can be produced.
Weight of three molecule of chlorine gas
[tex]= 3 * 70.9 \\= 212.70[/tex]grams
