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Related Questions
Which of the following is an example of a positive feedback loop:
I. As the Earth’s surface warms due to global warming, water evaporation from a lake will initially increase. As the lake level drops, the surface area decreases and evaporation also decreases.
II. Water vapor from ocean evaporation creates low altitude clouds. Sunlight that would normally warm the Earth’s surface is instead reflected back to outerspace.
III. Water vapor from ocean evaporation creates high altitude clounds. Heat that would typically escape the atmosphere into outer space is trapped in the atmosphere instead.
I only
II only
III only
I and II.
I, II and III
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Results from multiple experiments suggest that the ActA protein of Listeria, an integral membrane protein expressed on the cell surface, is the only bacterial protein that is required for the movement of the bacterium within its host cell. Which combination of the following observations shows that ActA is both, necessary and sufficient for bacterial movement?
I. ActA binds to the Arp2/3 complex
II. E. Coli in which ActA is expressed moves in host cell cytosol
III. Listeria lacking the ActA gene fail to move inside the host cell cytosol.
IV. ActA has 3 transmembrane domains
V. Arp2/3, when activated, nucleates a branched actin network
a. I and II
b. II and III
c. I and III
d. III and IV
e. I and V
Answers
Answer:
b. II and III
Explanation:
The Actin assembly-inducing (ActA) protein is an integral membrane protein localized on the bacterial surface. It has been shown that ActA is necessary and sufficient to induce bacterial movement within host cells, regardless of other proteins. The function of the ActA protein for bacterial movement within host cells was discovered by identifying mutant Listeria bacteria for the gene encoding this protein which were unable to spread from cell to cell. Subsequently, by inducing mutations in other genes of the bacterial genome, researchers discovered that actA was the only protein involved in the actin assembly, which is required for cell-to-cell spread.
correct scientific notation of the number 2600000000
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which of the following is a true statement about mechanical weathering
mechanical weathering changes the rock into a different material
mechanical weathering can break rocks into smaller sediments
mechanical weathering is only occur by volcanoes
earthquakes produce mechanical weathering only
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Answer:
The answer is B
Explanation:
Which product is the result of light reactions in photosynthesis?
A. Water
O B. Glucose
O C. Oxygen
O D. Carbon dioxide
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Answer: C) Oxygen
Plants absorb carbon dioxide (CO2) and release oxygen for humans and animals to breathe in. Afterward, they'll release CO2 for plants to absorb, which forms a cycle.
why was the Sacco and Vanzetti trial significant
A( it showed how the Red Scare had influenced attitudes toward immigrants.
B( it showed that Americans were Sympathetic to immigrants.
C( it showed that immigrants were treated fairly by law enforcement officials.
D( it was demonstration of judicial fairness to immigrants.
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Answer: A. It showed how the red scare had influenced attitudes toward immigrants
Explanation:
There was a rise for nationalism( a negative thing mind you, that discriminates against "non-Americans") in the early 20s, and it affected most of Americas judgement of a fair trail (and treatment in general) towards immigrants.
Do you think wolves are a keystone species? Explain your answer
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Answer:
I think that wolves are a keystone species because they regulate prey. If they were gone, prey would overpopulate and decrease the population of smaller organisms such as plants. Without plants and other food sources for the prey, the prey would also decrease eventually.
Explanation:
what is anther term for muscle cell
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Answer:
myocyte
Explanation:
Lions and Tigers are the most similar of the "Big Cats". Why are Lions and Tigers so similar?
Big Cats | Big cats art, Wild cats, Big cats
Question 4 options:
because lions and tigers both need to hunt
because lions and tigers have many of the same genes
because lions and tigers have the same type of cells
because lions and tigers share the same organelles
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Answer:
B. Because lions and tigers have many of the same genes.
Explanation:
You can rule out A, since all big cats and other predatory animals must hunt to survive.
C can be ruled out, as all animals have roughly the same cells.
D can be ruled out as well, since all animal cells have the same organelles (essentially the same reason C can be ruled out.)
That leaves us with option B. B is the most likely answer, as lions and tigers share most of their DNA with one another.
What is added as an anticoagulant to preserve blood specimens?
OA sodium citrate
B
sodium fluoride
O'c. potassium oxalate
OD liquid paraffin
E.
ethanol
Reset
Answers
Explanation
Sodium Fluoride
Answer:
C. potassium oxalate for plato / edmentum
Explanation:
I took notes in the class and my notes say -
To prevent blood from clotting, toxicologists add anticoagulants to the blood sample. Anticoagulants such as potassium oxalate (30 mg/mL) is preferred over heparin or ethylenediaminetetraacetic acid (EDTA) because both heparin and EDTA interfere with the detection of certain chemicals, such as calcium, in the blood. If the blood is suspected of carbon monoxide poisoning, a layer of liquid paraffin is added over the blood sample. This layer prevents exposure to atmospheric oxygen.
According to the USDA, a "consists of a community of individuals who pledge support to a farm operation so that the farmland becomes,
either legally or spiritually, the community's farm, with the growers and consumers providing mutual support and sharing the risks and benefits
of food production."
-sustainable operation
-farmers' market
-farmers' cooperative
-CSA
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Answer:
The correct answer is CSA.
Explanation:
Community Supported Agriculture (CSA) is an alternative model for the distribution of agricultural products directly from the farmer to the consumer, it consists of a group of people who form a cooperative to grow and consume food. Through this socio-economic model, consumers lend their support to producers, in exchange for a direct and regular delivery of biological products, that is, producers and consumers support each other and share the benefits and risks of food production.
A stream that flows into two different rivers is part of two
A reservoirs.
B. tributaries.
C. divides.
D.
watersheds.
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Answer:
Tributaries
Explanation:
I wound think that they would be branching of so thats what i would say
A water body that flows on the surface of the earth is called a stream. The river is a larger water body compared to streams. Stream is shallow likened to river volume.
A stream that flows into two distinct rivers is part of two:
Option b. Tributary
This can be explained as:
A reservoir is a lake that reserves the water either created naturally or artificially.A stream that merges into the river is called tributary or affluent.A watershed is a drainage bay where the water from precipitation gets accumulated and drains to common river or water bodies.Therefore, a tributary is a stream that flows into two different rivers.
To learn more about streams and tributaries follow the link:
https://brainly.com/question/7557130
what types of reproductive systems of female
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Answer:
A female's internal reproductive organs are the vagina, uterus, fallopian tubes, and ovaries. The vagina is a muscular, hollow tube that extends from the vaginal opening to the uterus.
Once all the members of a ____ have this favorable traits then it is refferred to as an _____
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Answer:
Once all the members of a population have this favorable trait, then it is referred to as an adaptation.
Explanation:
Identify landform B, explain how it forms, and tell whether it is the result of erosion or deposition.
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Answer:
Erosion because if you look it looks like it is slowly eroding
Explanation: