When an inducer is added to a medium containing an organism with a metabolic pathway controlled by a repressor, the inducer then Group of answer choices combines with the substrate and blocks induction. does not combine with, but rather functions as a chaperone molecule for, the enzyme-substrate complex. combines with the repressor and activates the repressor. combines with the substrate and activates induction. combines with the repressor and inactivates the repressor.
Answer:
The correct answer is - combines with the repressor and inactivates the repressor.
Explanation:
The role of inducers is to bind with a repressor in a metabolic pathway and cause them to change their shape. This modification of the shape in the repressor structure prevents them to bind with the DNA and the metabolic pathway continues.
So, inducers inactivate the repressors by binding them. For example in Lac operon lactose, an inducer bindswith the repressor and dissociates it from DNA and inactivates the repressor.
Calculate the percentage of viable cells
102/112x100
Answer:
91.07%
Explanation:
Given the expression
102/112 x 100
This can also be expressed as;
= (2*51)/(2*56) * 100
= 51/56 * 100
= 5100/56
= 91.07%
Hence the percentage of viable cells is 91.07%
Which statement below is an accurate claim that can be made based on the lizard table?
A The number of lizards always stays the same.
B The lizard population shifts from being mostly brown to being mostly red.
С The lizard population get more diverse as more generations go by.
D The lizard population shifts from being mostly brown to being most black.
!!
Answer: did you get the right answer ?
Explanation:
The statement is an accurate claim that can be made based on the lizard table, the lizard population shifts from being mostly brown to being mostly black. The correct option is D.
What is a population?The term “population” refers to all citizens who are either permanently residing in a country or who are just passing through. This indicator reveals how many people typically reside in a certain area.
Growth rates are the population changes that occur each year as a result of births, deaths, and net migration.
We can see in the table that the population of lizards or black lizards is increasing, and the brown lizard population is decreasing.
Therefore, the correct option is D. The lizard population shifts from being mostly brown to being mostly black.
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2.The horned lizard is often called a horned toad because of its short, fat body and small tail.
When this lizard finds a coyote, it will spray blood from its eyes at the coyote. Then the lizard will run a short distance and stay very still to blend into the background.
Why does the horned lizard do this?Lector inmersivo
(1 Punto)
Horned lizards do this to play with the coyote.
Horned lizards do this to attract other horned lizards.
Horned lizards do this to catch and eat the coyote.
Horned lizards do this to escape from the coyote.
Which of the following is an example of an abiotic factor?
Answer:
d) The climate of the community in which the species mentioned above inhabit.
Answer:
an abiotic factor is non living, biotic means living
Explanation:
examples: light, carbon dioxide, water, temperature, nutrients
scientists on mars have been investigating the genetic makeup of organisms in this community. use the information provided and your knowledge of genetics to answer the following questions.
Answer:
please where are the questions
Explanation:
Answer:
please provide the questions
Explanation:
Remoras are fish that attach themselves to the underside of larger organisms, such as
sharks. Remoras benefit by using the shark for protection, transportation, and food. The
shark neither benefits nor is harmed. This is an example of -
mutualism
commensalism.
predation.
parasitism.
Answer: commensalism
Explanation:
write one paragraph explaining the steps of photosynthesis
Answer:
trading a lemonade stand for an orange juice stand!!! get a taste of ur own medicine HA
Explanation:
Specific immunity involves
actif
Pa
abs
both cell-mediated and antibody-mediated immunity
lysozyme found in sweat and tears
acti
or
MA
tior
724
surface barriers like skin, mucus and the cilia of the respiratory tract
cell-mediated immunity
O antibody-mediated immunity
Answer: both cell-mediated and antibody-mediated immunity.
Explanation:
Specific immunity involves targeting certain infections. This is done when certain cells assess the danger and release anti-bodies that target the antigens of the organism.
Once this is done, white blood cells will now be able to fight the organism or pathogen more efficiently.
There is therefore both a cell-mediated and antibody-mediated response.
A shift to the right in the hemoglobin dissociation curve means that: the affinity of hemoglobin for O2 has decreased. the CO2 levels in the blood have decreased. the pH of the blood has increased. the hemoglobin protein has denatured. less O2 is released by hemoglobin to the body cells.
Answer:
The correct answer is - the affinity of hemoglobin for O2 has decreased.
Explanation:
The oxyhemoglobin dissociation curve or hemoglobin dissociation curve is the graphical representation of the proportion of hemoglobin in its saturated form on the y-axis against the prevailing oxygen tension P0 on the x-axis.
A shift of the curve to the right side indicates the hemoglobin has a reduced or less oxygen affinity. It occurs in cases where oxygen needs to be released such as the placenta for breathing of the fetus and muscles.
How can climate change impact on the ecosystem? Think of two different scenarios and describe them
Identify structure H (1 point)
מ ס ס ס וח
nou
F
-G
H
1
-K
L
Cell 2
Cell 1
Nucleus
O Cytoplasm
O Central Vaculole
Endoplasmic Reticulum
Answer:
(H) is the central vacuole!
Hope this helps ❤️
Most scientists have biases, but they try to prevent bias from influencing their work.
What is bias?
A. having a point of view that is objective
B. having a point of view that is impartial
C. having a point of view that lacks prejudice
D. having a point of view that can influence an experiment
Answer:
a
Explanation:
Answer:Is B
Explanation: because is b
www.biologycomer.com
10. At 100x, you will see a cell that is larger and has a dark shape in it. This cell doesn't look like the others because it is a
white blood cell and it functions to protect your body against microbes. Red blood cells do not have a nucleus. White blood cell
count is used as a diagnostic tool to determine if someone is sick. If you were fighting an infection, would you expect to have
more or less WBC's? Why?
Answer:
More
Explanation:
When your body needs more of a cell, it produces more of that cell. Since WBC’s (white blood cells) are used to fight infections, if you are sick you need more of them. Hope it helps :)
Help please | no links!!
During the winter, purple finches are often seen in Florida. During the summer, purple finches are rarely seen in Florida. Explain why this change occurs between the two seasons.
Because during summer they don't like to be around urban areas and housing, they are always in coniferous forests; You might see them close to your house but only if they are struggling when the food is scarce, they usually migrate from Canada to grounds to winter widely across central and Southeastern U.S. which includes Florida; but on summer they prefer to stay in deep and damp coniferous forests.
Calcitriol is made from
Suppose the brown allele for eye color (B) is completely dominant over the blue allele for eye color (b). If two brown-eyed parents produce a child that is blue-eyed, what is the probability that at least one out of the next two children they produce will also have blue eyes
Answer:
The probability that at least one out of the next two children they produce will also have blue eyes equels 44%
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
What does each daughter cell inherit during binary fission?
A) half the chromosomes of the original cell
B) a unique variation of the parent cell’s primary DNA
C) twice as many chromosomes as the original cell
D) an identical copy of the parent cell’s primary DNA
Answer:
an identical copy of the parent cell’s primary DNA
Explanation:
In this form of cell division, a cell replicates its DNA, increases in size, and divides into two daughter cells. Each daughter cell receives one copy of the replicated parental DNA.
During binary fission (d), daughter cells receive an exact copy of the parent cell's main DNA.
What is DNA exactly?Definition. Deoxyribonucleic acid, commonly known as DNA, is indeed the molecule that contains the genetic information necessary for an organism's growth or operation. The structure of DNA consists of a double helix, which is made up of two linked threads that loop around one another to form a twisted ladder.
Who created the DNA?Many people think that the 1950s saw the discovery of DNA by English physicist Francis Crick & American biologist James Watson. This isn't in fact the case. Rather, Swiss chemist Miescher made the first official discovery of DNA in the late 1860s.
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Use the diagram below to answer the questions that follow for 1 point each.
State Charles' Law as shown in the graph above.
Identify the volume if the temperature is 330K.
Identify the temperature if the volume is 0.0022 m3
Answer:
I. When the temperature is 330K, the volume is 0.025 m³
II. When the volume is 0.0022 m³, the temperature is 300 K.
Explanation:
Charles states that when the pressure of an ideal gas is kept constant, the volume of the gas is directly proportional to the absolute temperature of the gas.
Mathematically, Charles is given by;
[tex] \frac {V}{T} = K[/tex]
[tex] \frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}[/tex]
Where;
V1 and V2 represents the initial and final volumes respectively.
T1 and T2 represents the initial and final temperatures respectively.
From the graph, we can deduce the following;
I. When the temperature is 330K, the volume is 0.025 m³
II. When the volume is 0.0022 m³, the temperature is 300 K.
PLEASE HELP QUICK!!! 20 POINTS AND I WILL MARK BRAINLIEST!!
Investigation techniques
Answer:
Observation
You watch to see the passengers in cars that pass...Classification
To investigate different types of matter, students are asked to seperate items on the table...A titration is used to determine the pH...Experimentation
You mix two aqueous solutions together...A wooden splint is placed above a test tube...To determine the activity series, several metals and solutions containing those metals are used...Explanation:
I abreviated the text in each box, but you should get the gist of which belongs in which categories. Let me know if you need further explanation on what warrants classification in the observation, classification, and experimentation categories.
I know this might be selfish and all but I have a female and male rabbit and I am afraid the female rabbit is going to get pregnant I don't want her to get pregnant because rabbits have many kids what can I do to avoid my female rabbit veering pregnant?
Answer:
We did this with gerbils so basically separate their cages or kennels
Explanation:
If you really want to avoid pregnncy you can sterilize them...
in a microscope never use the _____with ________when you are done
Answer:
In a microscope never use the __scope___with ___high power_____when you are done
Explanation:
1. Does carbon always stay in the same form and
location?
if the birth rate doesnt change but the death rate goes down, what happpens to population
If this happens, the population will slowly increase
Imagine that you're writing a paper on the topic of ocean acidification. Find two articles about ocean
acidification on the Internet that you could use in your research. Name them Source 1 and Source 2, and
include a link to each source. Be sure to also include the name of the website or organization that
published the source.
Answer:
carbon dioxide in the atmosphere that we don't see or feel because its effects are happening underwater. At least one-quarter of the carbon dioxide (CO2) released by burning coal, oil and gas doesn't stay in the air, but instead dissolves into the ocean. Since the beginning of the industrial era, the ocean has absorbed some 525 billion tons of CO2 from the atmosphere, presently around 22 million tons per day.
At first, scientists thought that this might be a good thing because it leaves less carbon dioxide in the air to warm the planet. But in the past decade, they’ve realized that this slowed warming has come at the cost of changing the ocean’s chemistry. When carbon dioxide dissolves in seawater, the water becomes more acidic and the ocean’s pH (a measure of how acidic or basic the ocean is) drops. Even though the ocean is immense, enough carbon dioxide can have a major impact. In the past 200 years alone, ocean water has become 30 percent more acidic—faster than any known change in ocean chemistry in the last 50 million years.
Scientists formerly didn’t worry about this process because they always assumed that rivers carried enough dissolved chemicals from rocks to the ocean to keep the ocean’s pH stable. (Scientists call this stabilizing effect “buffering.”) But so much carbon dioxide is dissolving into the ocean so quickly that this natural buffering hasn’t been able to keep up, resulting in relatively rapidly dropping pH in surface waters. As those surface layers gradually mix into deep water, the entire ocean is affected.
Such a relatively quick change in ocean chemistry doesn’t give marine life, which evolved over millions of years in an ocean with a generally stable pH, much time to adapt. In fact, the shells of some animals are already dissolving in the more acidic seawater, and that’s just one way that acidification may affect ocean life. Overall, it's expected to have dramatic and mostly negative impacts on ocean ecosystems—although some species (especially those that live in estuaries) are finding ways to adapt to the changing conditions.
However, while the chemistry is predictable, the details of the biological impacts are not. Although scientists have been tracking ocean pH for more than 30 years, biological studies really only started in 2003, when the rapid shift caught their attention and the term "ocean acidification" was first coined. What we do know is that things are going to look different, and we can't predict in any detail how they will look. Some organisms will survive or even thrive under the more acidic conditions while others will struggle to adapt, and may even go extinct. Beyond lost biodiversity, acidification will affect fisheries and aquaculture, threatening food security for millions of people, as well as tourism and other sea-related economies.
Answer:
Source 1: What Is Ocean Acidification? published by NOAA
Source 2: Ocean Acidification published by Wikipedia
Explanation:
plato
Mayra and Seline are discussing the adaptations of organisms living in estuaries and wetlands.
Mayra's answer: Plants in wetlands are adapted to live under water for at least a part of the year. Plants in estuaries are adapted to the changing salinity (salt levels), because estuaries have mixture of fresh and salt water.
Seline's answer: Plants in wetlands are adapted to the changing water depths and oxygen levels, because wetlands are where a river meets the ocean. Plants in estuaries are adapted to survive long/harsh winters and short summers.
Read each student's answer CAREFULLY. Which of the statements below are correct?
A. Neither of them are right. Plants in wetalnds and estuaries have different adaptations than the ones they mentioned.
B. Mayra's answer is correct. Seline's answer is incorrect.
C. Both Mayra and Seline are correct. They each talk about different abiotic factors and plant adaptations
D. found in wetlands and estuaries. Seline's answer is correct. Mayra's answer is not correct.
What similarities are there in growth of the human population compared to animal/plant populations?
The similarities between the growth of the human population and that of plants and animals can be seen in the fact that in all three instances.
Briefing:With respect to the original number of specimens, the increase happens exponentially.
If there are 100 humans and 50 of each gender, then it is possible for 50 additional people to appear;
Animals and plants both reproduce exponentially compared to the procreative couples that were previously there.
Why is plant population important?Due to the encouragement of apical dominance and the subsequent induction of barrenness, a high plant population ultimately results in a reduction in the number of ears produced per plant of maize. Plant populations should constantly remain at their ideal levels.
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The small population of wolves on Isle Royale has been harmed by a lack of genetic diversity, plus the accidental introduction of canine parvovirus. In another part of the country, ecologists are also working to protect a larger population of wolves that live in a national park. Compared to the small, isolated population on Isle Royale, in the national park diseases like parvovirus are ___________likely to be a problem, and lack of genetic diversity is __________ likely to be a problem for the wolves.
Answer:
Compared to the small, isolated population on Isle Royale, in the national park diseases like parvovirus are less likely to be a problem, and lack of genetic diversity is less likely to be a problem for the wolves.
Explanation:
Diseases like parvovirus and lack of genetic diversity are less likely to be a problem for wolves in national park as ecologists are protecting them there.
Compared to the small, isolated population on Isle Royale, in the national park diseases like parvovirus are less likely to be a problem, and lack of genetic diversity is more likely to be a problem for the wolves.
There is a balance that exist between wolves and moose in Michigan's Isle Royale National Park.
Wolves was known to first colonized Lake Superior's Isle Royale in the late 1940s.
Wolves lives eating old or sickly moose. Studies has shown that the wolf population had swelled to 24, a surprisingly large number and 80% of the island's moose had died
Parvovirus is a disease that inflames the wolf's intestines and causes death by diarrhea within 24 hours. It was introduced to the island in 1981 by a visiting dog as studies says and killed nearly half the wolves and thereafter it disappeared.
Peterson a scientist says this disease is unlikely to have killed wolves now, as survivors of the last outbreak must have acquired immunity.
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3. Which of the following is an example of
an effort to conserve biodiversity?
a. Use of pesticides
b. Driving large vehicles
c. Protecting plant and animal
species in a national park
d. Taking a piece of coral for a
souvenir after a scuba dive
Which idea is not in the correct position on the chart?
A. Biomass Fuels
B. Natural gas
C. Wind
D. Geothermal energy
*If you cant read the top of the chart it says:
Alternative Energy Sources | Fossil Fuels*
Answer:
Biomass Fuels, Geothermal energy