Answer:
Explanation: D
in the presence of a regulatory protein the lac operon is _____.
Answer:
The correct answer is : B. not transcribed
Explanation:
The regulatory protein of the lac operon is a repressor. A operon is a stretch of DNA consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway. The genes of an operon are sequentially ordered after the promoter.
why do scientist say "Dont panic"
Answer:
Because you could do something irrational
Explanation:
Help me please!!! Which hot spot is it? Left, 1st middle, 2nd middle, or Right?
Answer:
Left side
Explanation:
The mitochondria
The Krebs cycle or citric acid processes in the mitochondrial matrix yield a substance called NADH. Adenosine triphosphate is then produced from NADH by enzymes included into the mitochondrial inner membrane (ATP).
What is the main role of mitochondria in nutrient energy?Organelles, or “tiny organs,” are what mitochondria are. They generate ATP (adenosine triphosphate), a chemical that is used by the cell to power the various tasks it must perform, as a source of energy.
The creation of cellular ATP by oxidative phosphorylation is undoubtedly one of the activities of mitochondria, but they also play significant roles in ion homeostasis.
Various metabolic pathways, apoptosis and programmed cell death, as well as the production and consumption of ROS.
Therefore, mitochondria transform nutrient material into an energy form that is used by the cell.
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The Mississippi river carries sediments into the Gulf of Mexico. What do you think will happen to the sediments after a few million years?.
Answer:
Explanation:
The Mississippi River carries tons of tiny rock fragments called sediments into the Gulf of Mexico. What do you think will happen to these sediments after a few million years? Gizmo Warm-up Over millions of years, rocks are broken down and transformed into other rocks. The Mississippi river carries sediments into the Gulf of Mexico. What do you think will happen to the sediments after. The Mississippi river carries sediments into the Gulf of Mexico. What do you think will happen to the sediments after a few million years?
I need help asap please
Answer:
A pet exposed to a high level of toxin within a short time may be affected by acute toxicity
Which of these is not an example your body maintaining homeostasis?
A-When exercising, your body releases more energy to your muscles.
B-On a hot summer day, you produce sweat.
C-When you get a virus, your body systems react to fight it.
D-When you see a piece of cake, your mouth waters.
Answer:
D. When you see a piece of cake, your mouth waters.
the movement of potassium into an animal cell requires
The movement of potassium into an animal cell requires the presence of cytoplasmic ATP.
What is ATP?This is defined as Adenosine triphosphate and refers to the energy currency in cells.
Movement of potassium ions across the cell membrane involves the use of cytoplasmic ATP which provides the required energy needed for this metabolic activity.
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[BWS.05] Which of these forces exist between Earth and moon?
O gravitational force
O electromagnetic force
O weak nuclear force
O strong nuclear force
Answer:
Gravitational ForceExplanation:
Action at a distance, such as the gravitational force of Earth on the Moon, is explained by the existence of a force field rather than by “physical contact.” The four basic forces are the gravitational force, the electromagnetic force, the weak nuclear force, and the strong nuclear force.
Answer:
gravity
Explanation:
did you take your gravity class
the skeletal system is not responsible for which of the following
Answer:
The skeletal system is the support system for the body. It gives the body shape, form, and mobility while providing protection for sensitive organs. The skeletal system is the support system for the body. It gives the body shape, form, and mobility while providing protection for sensitive organs.
Explanation:
The body is supported by its skeletal structure. It gives the body form, motion, and shape while safeguarding delicate organs. The body is supported by its skeletal structure.
What is skeletal system?The main structural component of your body is the skeletal system. It is made up of bones and connective tissue, such as ligaments, tendons, and cartilage.
Vertebrates are creatures with a spinal column or backbone, including humans. They are supported by a strong internal framework that is built around a noticeable spine.
Our bodies' living bones use oxygen and release waste products throughout metabolism. They have functional tissues that require nutrients, blood flow, and the ability to remodel or change shape in response to changes in mechanical stress.
The skeleton, which is made up of bones, acts as a rigid framework to support and shield the body's soft organs.
Therefore, The body is supported by its skeletal structure. It gives the body form, motion, and shape while safeguarding delicate organs. The body is supported by its skeletal structure.
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Which statements best describe the role of glucagon and insulin in this scenario
The organelles of eukaryotic cells interact with each other to maintain homeostasis within the cell. The nucleus, endoplasmic reticulum, Golgi apparatus, chloroplasts, and mitochondria all contribute to protein transport, packaging, export, and energy harnessing. According to the endosymbiotic theory, certain organelles are proposed to have evolved from free-living bacteria that were engulfed by a larger cell. These organelles have multiple membranes, their own circular DNA, and can replicate by binary fission. The origin of which organelles are likely explained using the endosymbiotic theory?
Answer:
mitochondria and chloroplast
Explanation:
USA test prep
Answer:
mitochondria and chloroplast
Explanation:
I did it
Which type of cell is shown in the figure?
A: Triploid cell
B: Diploid cell
C: Polyploid cell
D: Haploid cell
Answer:
Haploid
Explanation:
HELP PLEASE SHOW WORK
1. How many grams are there in 2.3 moles of C?
2. How many moles are there in 43 grams of aluminum?
3. How many atoms are there in 100.5 moles of U?
4. How many moles are there in 6.818 x 10 26atoms of Ne?
Answer:
1. 46grams
2. 5moles
3. 476 atoms
4. 6,995,268
An elk herd is observed over many generations. Most of the full-grown bull elk have antlers of nearly the same size, although a few have antlers that are significantly larger or smaller than this average size. The average antler size remains constant over the generations. Which of the following effects probably accounts for this situation?
a. directional selection
b. stabilizing selection
c. diversifying selection
d. bottleneck effect
e. Genetic Drift
Answer:
b
Explanation:
cytochrome c is a protein found in all species, and functions in energy metabolism. the more closely related two different species are,
The more closely related two different species are, the more alike their cytochrome C amino acid sequences are. The cytochrome C is an evolutionarily conserved protein.
The cytochrome C is an evolutionarily conserved protein involved in cellular respiration.
The cytochrome C is a carrier of electrons that acts during the oxidative phosphorylation stage of cellular respiration.
This protein is evolutionarily conserved in species whose cells generate ATP in anaerobic (oxygen presence) conditions, which means that generally synonymous mutations are observed when comparing the amino acids of this protein.
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Rejection of a newly translated organ caused by ..
Answer:
D
Explanation:
Rejection of a newly translated organ caused by development of cancerous cells in the organ
the muscle that originates from the superior surface of the pubis around the symphysis is the
H-E-L-P! ASAP! Describe two ways that plants respond to their environment, giving an example of each. Your answer can include ways that plants respond to seasonal changes, light, gravity, or touch.
Plants have evolved to respond to critical changes in the environment by either growing their roots, or leaves towards/away from any stimulus. This response, is called a tropism.
For example, The plant's stem and leaves bend toward sunlight. Their roots grow toward Earth's gravity.
Plants have complicated systems to detect and then respond to changes in light, gravity, temperature, and or even physical touch.
I hope this helps!
Directions: Together with your parents and siblings, create a simple irrigation system in your house that will help in growing your plants. Watch the video on the link below and use the knowledge that you gained from the lesson. After doing the activity answer the question: "How did you apply the knowledge you gain from the video and from the lesson in creating your own irrigation system?
Knowledge and understanding
20
Students showed excellent knowledge about the topic
10
Students showed limited knowledge about the topic
5
Students have very limited knowledge about the topic
The video with the necessary information to answer the question is missing. So, an irrigation system definition and example will be given.
An irrigation system is a structure made of tubes, hoses, and sprinkles; Its function is to water plants or crops with the correct amount of water and in an evenly way.
A simple irrigation system that will help grow plants at home is a plastic bottle with small holes connected to a hose with a tube that can lead the water from the hose to the bottle without losses. The bottle with its holes works as a sprinkler.
In conclusion, irrigation systems are in lawns, fields, or gardens, and they water the plants evenly so that they can grow. There are many types, but we can build a simple one with a bottle.
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According to the food chain shown, about how much energy from the grasshopper trophic level is transferred to the frog trophic level?
The amount of energy transferred to frog is 10% of the energy contained in grasshopper.
This is a representation of energy levels and distribution in a food chain in an Ecosystem. When a group of organism represent the same level in a food chain, in an ecosystem ,this is trophic level. Food chain represent a linear representation of nutrients and therefore energy distributions in an ecosystem.
Basically, in an ecosystem, there is always reduction in energy transfer from one trophic level to another by 10%. This is because, as the energy is transferred from the producer (green plants) to the primary consumer, the hopper, only 10% of the available energy will pass through to the hopper because 90% of the energy will be used by the green plants for metabolic and other physiologic activities. As this is transferred to the next trophic level, the Frog, this will be reduced (for the same reasons) so that 10% of the energy received by the grasshopper is transferred to the frog.
Practically, if 100,000Kcal of energy was obtained by hopper from the primary producer,10,000kcal(10%) of 100,000 will be transferred to frog.
This 10% occurs at each trophic levels.
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4. Arterioles are the
a. Vein system.
b. Arteries system.
c. Arteries and vein system.
d. Arteries and blood system
Answer:
b. Arteries system
Explanation:
The length of the side of square A is hall
the length of the side of square Bo what is
Ratio of the perimeter of square is
to the perimeter of square A.
the
Answer:
1•4 is the correct answer
Pathogens that do not usually cause disease unless the host's immune system is weakened or compromised in some way are known as _________ pathogens.
illustrate how the self sealing bubble membrane helps to illustrate the passage of molecules through a cell membrane and the property of selective permeability
Self-sealing bubble membranes help to illustrate the passage of molecules and the property of selective permeability in that they are an example of how something can be semi-permeable and allow only some substances to pass.
When we mention a membrane, we refer to the selective barrier that protects cells from the environment. Within this barrier, lie certain proteins that serve as a kind of "tunnel" for the passage of very specific substances. This, along with a few other mechanisms are what gives a membrane the title of being semi-permeable.
This is because semi or selective permeability is the ability to allow the passage of very specific substances despite being a sealed barrier. Self-sealing bubble membranes share this ability by allowing some substances, like specific gases, to enter the bubble while others will remain on the exterior of the sealed barrier.
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define work , in short answers
why it is important to base scientific theories and models on empirical evidence as opposed to other ways of knowing such as religion
Answer:
A theory not only explains known facts; it also allows scientists to make predictions of what they should observe if a theory is true. Scientific theories are testable. New evidence should be compatible with a theory.
Explanation:
Would a plant be able to survive if the ground tissue was damaged? Explain your answer.
Given what we know, we can confirm that with damaged ground tissue, a plant will most likely not be able to survive.
What we know about ground tissues in plants.The ground tissue forms an abundant part of all plant tissues. This tissue includes all plant tissue that is neither vascular nor dermal.This means that ground tissue covers a wide variety of functions. Two primary and important functions are the storage of sugar and water.Therefore, given the vital role of this tissue in plants and its function in storing "food" and water, we can confidently say that a plant with damaged ground tissue will not be able to survive for long.
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Answer:
No, it would not because...
Explanation:
A plant without ground tissue would not be able to survive. The ground tissue serves all types of functions, including photosynthesis, storage, and support. Without any of these functions, a plant can’t grow nor get the nutrient it needs to survive.
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What characteristics do Prokaryotic cells have? (Select all that apply)
A. Complex-has organelles
B. Has DNA
C. Has cell membrane
D. Makes up both multicellular & single-celled organisms
Answer:
it has:-
B) Has DNA
C) Has cell membrane
Because of its ability to decompose into oxygen and water, hydrogen peroxide is very useful against what group of organisms
Answer:
Hydrogen peroxide works by producing free radicals that damage cellular macromolecules. Hydrogen peroxide has broad-spectrum activity, working against gram-positive and gram-negative bacteria (with slightly greater efficacy against gram-positive bacteria), fungi, viruses, and endospores.
Explanation:
Hope this helps.
a person taking a glucose test is usually told to fast prior to the test. why would fasting be necessary?