Answers
Related Questions
1. What is an operon?
a. The binding site for a repressor PRO.
b. Any group of genes responsible for the metabolism of lactose in a prokaryotes or eukaryotes.
c. A cluster of genes under the control of a promoter.
d. A regulatory gene.
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Answer:
The answer is D
Explanation:
what are the similarities and differences between carrier proteins and channel proteins
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* Carrier proteins- these are proteins which allow larger or polar molecules through the membrane. They are trans membrane proteins.
Carrier proteins essentially “carry" signals that are not soluble in aqueous solution through the blood stream to their target cells. Carrier proteins for hydrophilic signals prevent degradation of the signal. Channel proteins are embedded in cell membranes. They often are receptors (though not always), and when activated, allow specific ions to pass through the membrane.
A channel protein is a special arrangement of amino acids which embeds in the cell membrane, providing a hydrophilic passageway for water and small, polar ions. Like all transport proteins, each channel protein has a size and shape which excludes all but the most specific molecules
The carrier protein facilitate diffusion of molecules across the cell membrane. The protein is imbedded in the cell membrane and covers the entire membrane. This is important because the carrier must transport the molecule in and out of the cell.
1. Which of the following describes the amount of organic material that is available for transfer to the next trophic level after subtracting material used for respiration?
-Gross Primary productivity
-Biomass
-Net Primary productivity
0r
-Primary productivity
2. Suppose a plant is eaten by a mouse, the mouse is consumed by a snake, and the snake is in turn consumed by a hawk. What could be assumed about the level of available organic matter in the mouse versus the plant?
-There will be less organic matter available.
-There will be more organic matter available.
-Organic matter does not transfer between the plant and the mouse.
0r
-They both have the same amount of organic matter.
3. How does biomass change from lower to higher trophic levels?
-It fluctuates.
-It increases.
-It decreases.
0r
-It stays the same.
4. The incomplete burning of _____ in gasoline is known to create black carbon and contribute to global warming.
-ethanol
-methane
-carbon
0r
-carbon dioxide
5. Why are there less secondary consumers in an ecosystem than producers?
-Around 90% of energy from one trophic level to the next is available.
-There is less land to use for habitat after the producers grow.
-More tertiary consumers will eat secondary consumers over producers.
0r
-There isn’t enough energy available to support more secondary consumers.
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Net primary productivity is the amount of organic material that is available for transfer to the next trophic level after subtracting material used for respiration.
When a plant is eaten by a mouse, the mouse is consumed by a snake, and the snake is in turn consumed by a hawk. In this case, there will be less organic matter available.
Biomass change from lower to higher trophic levels by decreasing.
The incomplete burning of ethanol in gasoline is known to create black carbon and contribute to global warming.
There is less secondary consumers in an ecosystem than producers because there isn’t enough energy available to support more secondary consumers.
It should be noted that global warming brings about the increase in the temperature around the world.
Read related link on:
https://brainly.com/question/8303820
Which of the following describes a negative feedback loop?
A. When the heart rate is too high, the body releases hormones that continually increase the heart rate higher.
B. When a pregnant woman is in labor, the body releases hormones that increase the intensity of contractions, which then increases the secretion of the same hormones.
C. When blood sugar concentration is above normal, the endocrine system releases hormones that lower the blood sugar concentration until it reaches a normal level, and the release of the hormones slows.
D. When a person is jogging, the body releases hormones that continually decrease the rate of oxygen supply to the legs.
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ANSWER is A
When blood sugar concentration is too low, the endocrine system secretes hormones that increase blood sugar concentration to a normal level.
Explanation:
The picture shows respiratory epithelium in the lungs. The cilia, or fingerlike projections are MOST LIKELY there to
A)
move liquid.
B)
catch debris.
C)
secrete mucus.
D)
transmit impulses
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Answer:
B. catch debris in the lungs
Artificial selection applies only to dog breeding?
True OR False.
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Answer:
Domestication is the act of separating a small group of organisms (wolves, in this case) from the main population, and select for their desired traits through breeding. ... Dog breeding is a perfect example of how humans select for desirable or fashionable traits.
true...?
Explanation:
Answer:
False.
Explanation:
The bananas we have today were created using artificial selection. Same thing with peanuts by the way.
how is cancer cell division different from regular cell division
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How do the hormones of the endocrine system act as a feedback mechanism for the menstrual cycle?
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In positive feedback, rising levels of hormones feedback to increase hormone production. During most of the menstrual cycle, estrogen and progesterone provide negative feedback to the hypothalamus and pituitary gland. This keeps their levels more or less constant.
In negative feedback, rising levels of hormones feedback to the hypothalamus and pituitary gland to decrease the production of the hormones. In positive feedback, rising levels of hormones feedback to increase hormone production. During most of the menstrual cycle, estrogen and progesterone provide negative feedback to the hypothalamus and pituitary gland. This keeps their levels more or less constant. During days 12–14, however, estrogen provides positive feedback to the hypothalamus and pituitary gland. This causes a rapid rise in the production of estrogen by the ovaries and leads to ovulation.
3 examples of relationships between geologic and biologic events
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Answer: Volcanic eruptions, earthquakes and tsunamis are all dramatic examples of geological events.
Explanation:
What is the independent variable?
What is the dependent variable?
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please help with this question
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Answer:
a -5
d -2
c-3
b-4
e - 5
Explanation:
I'm guessing this is the answer
The type of selection where traits in the middle range are favored is
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Answer:
OK I can do it and tell u afterwords
Allopatric speciation is most likely to occur when a ______ population is separated from the ______ population.
HELP PLEASEEE
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Which of the following accurately describes plasma?
a. It includes all the blood except the red blood cells.
b. It makes up 30% of whole blood.
c. It is the liquid portion of blood that includes the clotting factors.
d. It is the liquid portion of blood including the formed elements.
e. It contains the blood antigens that determine blood type.
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Answer:
The correct answer is - option C.
Explanation:
Plasma is the liquid portion of the blood that carries water, salts, and enzymes in it and comprise almost 55% of the total blood volume. Other 45% of blood contains RBC, WBC, and platelets.
It is a yellow liquid that contains a clotting factor that helps in clotting blood if any injury occurs. Antigens are present on the RBCs not in the blood plasma that determines blood type.
consider this group of rocks granite marble and gneiss what property was used to group these rocks
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Answer: The answer is Grain.
Explanation:
The four minerals that make up granite are feldspar, quartz, mica, and hornblende. Marble is a beautiful rock that is used by humans as building material and for decorative uses ... Rocks are classified into these groups by the way they were formed. ... Luster is a property of a mineral that tells how the mineral reflects light.
Answer:
The answer is Grain.
Explanation:
The four minerals that make up granite are feldspar, quartz, mica, and hornblende. Marble is a beautiful rock that is used by humans as building material and for decorative uses ... Rocks are classified into these groups by the way they were formed. ... Luster is a property of a mineral that tells how the mineral reflects light.
i got it right on edge 2021
Complex food molecules that are consumed by organisms must be broken down in order to be used by cells to support growth or release energy.
True
False
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Answer:True
Explanation:
The complex molecules are broken down by the digestive system. If the molecules were not to be broken down they would block the system
Answer:
TRue
Explanation:
Choose all the right answers. Which items are common features of most mammals? produce milk come in all sizes fertilized egg develops inside the body have fins eggs laid outside of body have scales some mammals live in water all have hair or fur
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Answer: Some mammals live in water all have hair or fur.
Explanation:
What are the three goals of integrated pest management (IPM)?
A) to reduce the use of insecticides, increase consumer costs, and
conserve water
B) to reduce the use of insecticides, increase farmer costs, and conserve
water
C)to reduce the use of artificial pesticides, reduce costs, and control pests
D) to reduce the use of artificial pesticides, reduce costs, and increase
salinization
Please select the best answer from the choices provided
Ο Α
B
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The correct answer is C. To reduce the use of artificial pesticides, reduce costs, and control pests.
Explanation
Integrated pest management (IPM) is a method that integrates different practices and scientific principles to make adequate management with pests. This method considers knowledge about the habits, life cycle, needs, and aversions of the pest, reducing the use of toxic methods and implementing less toxic methods, monitoring pest activity and adjusting methods over time, tolerating harmless pests, setting a threshold to decide when it is time to act, among others as its main principles. Therefore, the correct answer is C. To reduce the use of artificial pesticides, reduce costs, and control pests.
plz help me i beg of you!???
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Answer:
Pretty sure it's D, because the birds beak evolves to crush those grains as a result of certain food available in their habitat, although it does not say "diet" as an option so D is your best guess.
Explanation:
which type of protein is a new drug most likely to be?
a. An actin fiber
b. A myosin fiber
c. An enzyme
d. A histamine
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how do buffers work in the human body?
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Answer: They can help prevent a deadly change in blood pH. They can help keep blood below pH 7.0. They can help keep blood at a pH of 7.0.
Explanation:
why it is important to understand this concept for the benefit of understanding other ideas in science/biology (1-2 sentences).
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Answer:
the objective is to help you know more about biology as a science, how biologist and other scientist do their work, personal traits that scientist find helpful in their work, and the benefits that people derived from biology and biotechnology specially in gaining new knowledge in understanding the concepts of science/biology.
Explanation:
I don't know what concept does the question asks because it wastn't stated but I answered anyway
3. How does changing the number of neutrons affect an atom?
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Answer:
The change of number of neutrons does not affect the charge of the atom. All it will affect is your average atomic mass which is the sum of protons and neutrons.
Explanation: Hope this can help! ^^
Answer:
It will change the isotopes.
A species of elm has winged-seeds. How would biologists explain how a species of elm with winged-seeds evolved from an ancestral elm species without winged-seeds
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Answer:
In an ancestral elm species, mutations gave rise to the phenotypic trait "winged-seeds". Subsequently, selection favored elm plants with winged-seeds that diverged over time to become a separate species
Explanation:
A mutation is a genetic change in the DNA sequence. In general, mutations have a negative impact on the fitness of the individual (i.e., mutations are generally deleterious) and therefore they disappear from the population. However, there are situations where mutations are beneficial and confer an adaptive advantage, thereby increasing their frequency in the population. In this case, mutations associated with the formation of winged-seeds conferred an adaptive advantage (i.e., higher seed dispersal capacity) to individuals who had this phenotypic trait, thereby these individuals had more chances to reproduce and pass their genes to the next generation. Eventually, Elm plants with winged-seeds accumulated sufficient genetic differences to prevent interbreeding, leading to the formation of a separate species.
3. A house has several systems, such as the electrical system, plumbing system, and
heating and cooling system. In what ways are the systems of a house similar to
human body systems?
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I hope this could help you! ^^
Explain the Water Cycle
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Answer:
PRECIPITATION
SURFACE RUNOFF
GROUNDWATER
EVAPORATION AND TRANPIRITATION FROM TREES
REPEAT
Explanation:
Answer/Explanation:
The water cycle shows the continuous movement of water within the Earth and atmosphere. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow. Water in different phases moves through the atmosphere (transportation).
There are four main stages in the water cycle. They are evaporation, condensation, precipitation and collection. Let's look at each of these stages. Evaporation: This is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas).
Hence it is quite important to understand and learn the processes of the water cycle.
Step 1: Evaporation. The water cycle starts with evaporation. ...
Step 2: Condensation. ...
Step 3: Sublimation. ...
Step 4: Precipitation. ...
Step 5: Transpiration. ...
Step 6: Runoff. ...
Step 7: Infiltration.
It is also known as the hydrological cycle or the hydrologic cycle. During the process of the water cycle between the earth and the atmosphere, water changes into three states of matter – solid, liquid and gas. The diagram of the water cycle is useful for both Class 9 and 10.
Need help will mark Brainliest
Answers
Answer: the secondary response to Antigen A is greater because the lymphocytes remember the antigen
What can you observe with the cartoon? What is your own interpretation of it?
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Answer:
i think that: the volcanos are talking to eachother as if they are humans and they do not understand that the reason his neighbour "blew up" (errupted) is because they are volcanos
DUE IN 10 MINUTES PLZ HELP
Explain how environmental changes affect the sickle cell trait over time in your population.
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Answer:
your body will react
Explanation:
I have the Sickle cell trait....
uh anyways- ( HOPE THIS HELPS).
The stage of spinal shock that follows spinal cord injury is characterized by a. absent spinal reflexes below the level of injury. b. autonomic dysreflexia. c. motor spasticity and hyperreflexia below the level of injury. d. reflex urination and defecation.
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Answer:
The correct answer is a. absent spinal reflexes below the level of injury.
Explanation:
Spinal shock strictly refers to the neurological condition that occurs immediately after a spinal cord injury, in which the loss of not only motor and sensory functions occurs, but also the abolition of all reflexes below the injury (reflexes of muscular or myotatic stretching and cutaneous reflexes). There is also flaccidity, loss of reflexes. It is characterized by hypotension associated with cervical or upper thoracic spinal injuries. This characteristic shock results from the lesion of the descending sympathetic pathway in the spinal cord, producing a loss of vasomotor tone and sympathetic innervation of the heart. This causes vasodilation of the affected area with accumulation of blood and a decrease in venous return to the heart as well as cardiac output.