Answer:
A: Troposphere
Explanation:
The troposphere contains the largest percentage of the mass of the atmosphere relative to the other layers. It also contains some 99 percent of the total water vapor of the atmosphere. The temperature of the troposphere is warm (roughly 17º C) near the surface of the earth.
Answer:
a
Explanation:
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
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.
Water is carried though the trunk in the sapwood.
True
False
How do cold ocean currents affect climate ?
main stages of the cell cycle
Answer: The cell cycle is a four-stage process in which the cell increases in size (gap 1, or G1, stage), copies its DNA (synthesis, or S, stage), prepares to divide (gap 2, or G2, stage), and divides (mitosis, or M, stage). The stages G1, S, and G2 make up interphase, which accounts for the span between cell divisions.
Once all the members of a ____ have this favorable traits then it is refferred to as an _____
Answer:
Once all the members of a population have this favorable trait, then it is referred to as an adaptation.
Explanation:
Which product is the result of light reactions in photosynthesis?
A. Water
O B. Glucose
O C. Oxygen
O D. Carbon dioxide
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.
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
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.
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
You are studying the genomes of deep sea organisms when you come across a brand new species of lantern fish. In the lab, you measure the percent of nucleotides in the nucleus that contain adenine as their base and that percent is 30%. 10. Calculate the percent of thymine nucleotides: _______________ 11. Calculate the percent of guanine nucleotides: _______________ 12. Calculate the percent of cytosine nucleotides: _______________
Answer:
Thymine = 30%
Guanine = 20%
Cytosine = 20%
Explanation:
DNA is a double-stranded molecule made up of long chains of nucleotides (A, T, G, C). Each chain is the strand. However, According to Chargaff, the amount of adenine in a DNA is equal to the amount of thymine while the amount of guanine equals the amount of cytosine. That is:
(A = T) + (G = C) = 100%
All together, they all make up 100%. According to this question, the percent of nucleotides in the nucleus was measured to contain adenine as their base which is 30%.
If Adenine is 30%,. Then Thymine is 30% as well.
A = T = 30+30 = 60%
Hence,
60% + G + C = 100%.
G + C = 100 - 60
G + C = 40%
Since, G = C, 40/2 = 20%. Hence, G = 20% while C = 20%
All together,
A = 30%
T = 30%
G = 20%
C = 20%
Human blood has an approximate pH of 7.3, which substance is more basic than human blood?
I do believe that it is a water and ammonia solution (pH of 11)
A stream that flows into two different rivers is part of two
A reservoirs.
B. tributaries.
C. divides.
D.
watersheds.
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 is anther term for muscle cell
Answer:
myocyte
Explanation:
Does the environment ever change or is it always the same? Explain
Answer:
The Earth's climate has always changed
Explanation:
Over the course of the Earth's 4.5-billion-year history, the climate has changed a lot. This is true. But the rapid warming we're seeing now can't be explained by natural cycles of warming and cooling.
Answer:
The environment is always changing
Explanation:
The earth is always changing
Which of the following does NOT describe prokaryote chromosome organization?
diploid
found in the nucleoid
circular
tightly coiled
Answer:
diploid
Explanation:
diploid sorry if I'm wrong
When different types of staple fibers are spun together into a single yarn, the result is a
Answer:
String
Explanation:
That is what yarn is.
How does the excretory system work with the muscular system?
Answer:
How the Muscular and the excretory system work together. The Muscular system helps the Excretory system by moving waste through the body and protect its organs. The Excretory system helps the Muscular system by getting rid of carbon dioxide from the muscles.
Explanation:
Identify landform B, explain how it forms, and tell whether it is the result of erosion or deposition.
Answer:
Erosion because if you look it looks like it is slowly eroding
Explanation:
The____is the thing being dissolved
A. Solute
B. Solution
C. Solvent
Answer:
Solution?
Explanation:
B I think is the correct answer!
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.
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.
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
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.
What is the correct amino acid sequence for the given DNA sequence? TACACGTTCACC
A) methionine, valine, lysine, tryptophan
B) methionine, cysteine, lysine, tryptophan
C) methionine, cysteine, arginine, serine
D) serine, valine, lysine, stop
Answer:
The correct answer is - B) methionine, cysteine, lysine, tryptophan
Explanation:
Amino acid chain or sequence depends on the codes or the information mRNA is copied from the DNA sequence. The DNA sequence is the sequence of the nitrogenous bases that are coded or copied by mRNA in the complementary sequence and then translate into an amino acid sequence:
DNA: TACACGTTCACC
mRNA: AUG-UGC-AAG-UGG
Amino acid sequence: methionine, cysteine, lysine, tryptophan
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
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.
correct scientific notation of the number 2600000000
In the pea garden, Mendel found that yellow seed color was dominant to green (A>a) and round seed shape was dominant to shrunken (R>r). a) What phenotypic ratio would be expected in the F2 from a cross of a pure yellow, round x green, shrunken
Answer:
The correct answer is - 9:3:3:1
Explanation:
A cross between pure yellow round seeds(AARR) to another pure green shrunken seeds (aarr). In the F1 generation, all offsprings are heterozygous yellow round(YyrRr).
Now this heterozygous self-pollination, in the F2 generation, 9 plants are Yellow round, 3 plants are yellow shrunken, 3 plants are green round and 1 plant is green wrinkled are formed.
YR Yr yR yr
YR YYRR YYRr YyRR YyRr
Giraffes get their long necks from stretching for food- an idea discovered by Lamarck
True
False
Answer:
False kind sir/mam
Explanation:
Answer:
The answer is false
Explanation:
The French zoologist Jean-Baptiste Lamarck is usually credited as the first person to suggest that long necks have evolved in giraffes because they allow them to get to the parts other herbivores cannot reach.
so it is false that Giraffes get their long necks from stretching food
If the answer is correct please mark it as brainliest
Do you think wolves are a keystone species? Explain your answer
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:
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
Answer:
The answer is B
Explanation:
A group of lions is chasing a zebra. The lions are most likely responding to which kind of stimulus?
the external stimulus of fear
the internal stimulus of fear
the external stimulus of hunger
the internal stimulus of hunger
Answer:
internal stimulus of hunger
Explanation:
Lions do not fear externally or internally of the zebra because they eat the zebra once they kill it and they are chasing after it so no fear what so ever.
Lions are naturally lazy and hunger is normally why they would be hunting because they need food to survive, however this is not always the case.
there have been a pair of documented pair of male lions known as the Tsavo Man-Eaters, who hunted for sport. Their den contained animal and man bones.
they actually made a movie about it, If you want to watch the movie just look up Ghost in the Darkness. You can actually see the lions in the Field Museum of Natural History in Chicago, Illinois.
Hope this helped you!
Answer:
Internal stimulus of hunger
Explanation:
Edge 2021
Mendel came up with his Law of Independent Assortment through his investigations studying ?
whether or not the inheritance of one trait affected the other.
simple monohybrid traits such as plant height.
the passing down of dominant seed shape to offspring.
how self-pollination affects the second filial generation.
Answer:
A. whether or not the inheritance of one trait affected the other.
Explanation:
I just had this question on my exam :)
Which of the following is the focus of the NOAA?
limiting fishing
preserving fish species
policing fishing methods
maintaining water quality
Answer:
preserving fish species
Explanation:
"NOAA" stands for "National Oceanic and Atmospheric Administration." It focuses on preserving the marine environment and shares information about the climate, weather and so on. This means that its focus is to "preserve the fish species," and in order to do this, it created policies like the "Annual Catch Limits." This will prevent overfishing and ensure the world of a sustainable fish supply. Besides this, they also try to improve fish habitats and ensure the water quality in order for fishes to thrive.