B. The hypothalamus secretes the gonadotropin releasing hormone (GnRH), which stimulates the pituitary gland to secrete luteinizing hormone (LH). This stimulates the testes to secrete testosterone.
Answer: B. The hypothalamus
Explanation: just took the test
1. What is a double helix?
2. What forms the sides of the helix?
3. What is a nucleotide?
4. What are the three components of a Nucleotide?
5. What is a junk DNA?
Answer:
1. Double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating groups of sugar (deoxyribose) and phosphate groups.
2. The DNA double helix. The two sides are the sugar-phosphate backbones, composed of alternating phosphate groups and deoxyribose sugars. The nitrogenous bases face the center of the double helix.
3. A nucleotide is an organic molecule that is the building block of DNA and RNA. ... A nucleotide is made up of three parts: a phosphate group, a 5-carbon sugar, and a nitrogenous base. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine.
4. A nucleotide is made up of three parts: a phosphate group, a 5-carbon sugar, and a nitrogenous base. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine.
5. In genetics, the term junk DNA refers to regions of DNA that are non-coding. Some of this noncoding DNA is used to produce noncoding RNA components such as transfer RNA, regulatory RNA and ribosomal RNA
Hopes this helps.
giving brain liest to whover helps me :)
Answer:
Hope it helps :)❤
Have a great time
Answer:
If the stigma wasn't sticky then the bees couldn't move the pollen around and stuff.
Explanation:
That's all I really know about flowers.
What is the name given to the theory that explains how a substrate fits the active site of an enzyme?
Calista rode her bike to the park. Her velocity changed from 5 m/s north to 8
m/s north in 10 seconds. What was the change in Calista's velocity?
A. -3 m/s north
B. 8 m/s north
C. 3 m/s north
D. 5 m/s north
Answer:
C
Explanation:
8-5=3
Change in velocity = 3m/s north
1.) How does air move during sea breeze?
2.) From where does the wind blow during the land breeze?
3.) What time of the day does the sea breeze occur? (night time or day time)
4.) Which heats faster, land or sea?
5.) Compare the direction of air in sea breeze and land breeze.
PLS MARK ME AS BRAINLIEST
1.) As a result, warm air rises. Therefore, the warmer air over the land surface is rising. As the warm air over the land is rising, the cooler air over the ocean is flowing over the land surface to replace the rising warm air.
2.) a cool wind that blows from land to water. On clear, calm evenings, temperature differences between a body of water and neighboring land produce a cool wind that blows offshore. This wind is called a "land breeze".
3.) While sea breezes occur during the day, land breezes occur at night.
4.) Since land absorbs more solar radiation the land surface retains more heat as do the vegetation for energy. Thus, land surfaces warm more quickly than water.
5.) Sea breeze carries increased moisture, which it absorbs while blowing over a water body. A Land breeze is drier since it has no opportunity to absorb water from any source. Lastly, the sea breeze moves from the sea towards a land body. A Land breeze moves from land toward a water body, generally a sea or ocean.
Answer: 1.) During a sea breeze, the air moves from the sea towards the land. During the day, the land heats up faster than the sea. As a result, the air above the land becomes warmer, and it rises. The cooler air from the sea moves towards the land to replace the rising warm air, resulting in a sea breeze.
2.) During the land breeze, the wind blows from the land towards the sea. At night, the land cools faster than the sea. The air above the sea remains warmer and rises, and the cooler air from the land moves towards the sea, resulting in a land breeze.
3.) The sea breeze occurs during the daytime.
4.) Land heats up faster than water. This is because water has a higher specific heat capacity than land. Specific heat capacity refers to the amount of energy required to increase the temperature of a substance. Water requires more energy to heat up compared to land, which is why it heats up slower than land.
5.) During a sea breeze, the direction of air is from the sea towards the land. During a land breeze, the direction of air is from the land towards the sea.
Explanation:
Most meteoroids burn up in this layer
A.
exosphere
B.
ionosphere
C.
stratosphere
D.
mesosphere
Answer:
The answer is B
Help ASAP
Which description justifies why the theory of evolution is a theory and not a law?
Explains how organisms change in response to the environment
Predicts which organism is best suited to the environment
Supported by a small amount of empirical evidence
With more evidence it will become a law
Answer:
Explains how organisms change in response to the environment
Explanation:
What could you use to model cytoplasm? What would you use to represent each organelle? List the items you would use.
Answer:
- Clay
- Cardboard
- Styrofoam
- Balls of various sizes
Explanation:
Clay, cardboard or other three-dimensional objects. Modelling clay is handy because it can be shaped and formed to look like the various cell parts and organelles. Styrofoam can be used to represent the cytoplasm. A tennis ball or other small ball represents the nucleus. If you must show the interior of the nucleus, cut the tennis ball in half and use a large marble to represent the nucleolus.
HELPMEH 20 PTS reeeeeeeeeeA purple (Pp) flower crosses with a white (pp) flower. Use a Punnett square. What is the probability of producing a white flower offspring? Explain.
Answer: 50%
Explanation:
I got 50% because the purple and white is a 50/50 chance. Meaning that the white is 50% and the purple would be a 50%.
The large P is Horizontal and all the small p are on the top. The large P is dominant, while small p is not. If there were 2 big P then all flower crosses would be purple.
Is there a way to select for desirable traits in plants and animals?
Answer:
yes there is
Explanation:
genitic modification
Answer:Artificial selection is the identification by humans of desirable traits in plants and animals, and the steps taken to enhance and perpetuate those traits in future generations.
Why are tides on Earth higher than normal during spring tides?
-The Moon cancels out the gravitational pull of the Sun on Earth.
-The Sun comes closer to Earth and increases its pull.
-The Moon comes closer to Earth and increases its pull.
-The Sun combines its gravitational force with that of the Moon on Earth.
Existing rocks are buried and forced toward the mantle, increasing heat and pressure. This is the first step in the formation of metamorphic rocks.
(PLEASE HELPPPP 90 POINTS!!)
Which best describes the next step in the formation of metamorphic rocks?
Buried rocks melt deep within the mantle.
Lava melts underlying rocks, which crystallize into new minerals.
Rocks that were buried are exposed at Earth’s surface, where they are weathered and eroded.
Magma pockets rise, which increases heat, and minerals change due to temperature and pressure.
Joel claims that “Bright White Toothpaste” removes tooth enamel stains better than all other brands. Which of the following should be documented as evidence to support his claim?
1. The amount of toothpaste used
2. The shade of teeth before and after brushing
3. The type of toothbrush used to brush teeth
4. The size of tooth
how does ATP provide energy for the cell ASAP HELP
Can someone please help me on this question?
The model below represents water.
~insert picture~
Based on the labels, what is the best description of this model?
A. X and Y represent molecules; Z represents an atom of water
B. X represents a molecule; Y represents a particle; Z represents an atom of water
C. X represents an atom; Y represents a molecule; Z represents a particle of water
D. X and Y represent atoms; Z represents a molecule of water
Answer: D. X and Y represent atoms; Z represents a molecule of water
Explanation:
Molecule - Group of two or more atoms
Water is H2O meaning two hydrogen atoms bound to an oxygen atom.
Answer:
The answer is D
can someone please help
Answer:
A and c
Explanation:
Find the hot spot on the map. This represents one of the volcanoes of Hawaii, which gets its fuel because the island sits over a hot spot. Hot spots occurs at abnormally hot centers known as mantle plumes. Scientific models depict these plumes of molten rock almost like a lava lamp, with a rising bulbous head fed by a long, narrow tail that originates in the mantle. This type of volcanism, hot spot volcanism, is unique. Why?
A The hot spot volcanoes rarely result in mountain building; they are a destructive process.The hot spot volcanoes rarely result in mountain building; they are a destructive process.
B It does not occur at plate boundaries where most all other volcanism occurs.It does not occur at plate boundaries where most all other volcanism occurs.
C It occurs where two tectonic plates converge and is usually the site of mountain building.It occurs where two tectonic plates converge and is usually the site of mountain building.
D The resulting volcanoes always produce islands.
Answer:
A: The hot spot volcanoes rarely result in mountain building; they are a destructive process.The hot spot volcanoes rarely result in mountain building; they are a destructive process.
Please help me with these ones, i cant figure out these, if 1, 2, and 3 r correct ill mark u as the best answer
The relationship between a pitcher plant and a spider is Mutualism.
The relationship between a cuckoo and a warbler is a parasite-host(parasitism) relationship
I would say the relationship between racer snakes and iguanas is NOT mutualistic symbiotic, since the racer snakes are the only ones with the possibility of benefiting from the relationship.
WILL GIVE BRAINLIEST 40 PTS Classify each of the characteristics and examples as belonging to plant cells (P), animal cells (A),
or bacterial cells (B). Some characteristics may apply to more than one cell type.
_________ a. prokaryotic cell
_________ b. large vacuole for water storage
_________ c. example: blood cell
_________ d. enclosed nucleus
_________ e. smallest cell type
_________ f. eukaryotic cell
_________ g. has a cell membrane
_________ h. linear DNA
_________ i. no membrane-bound nucleus
_________ j. cell wall made of cellulose
_________ k. circular DNA
_________ l. has chloroplasts
_________ m. microscopic
_________ n. example: E. coli
Answer:
a. prokaryotic cell - B
b. large vacuole for water storage - P
c. example: blood cell - A
d. enclosed nucleus - A
e. smallest cell type - B
f. eukaryotic cell - A
g. has a cell membrane - A, P, B
h. linear DNA - B
i. no membrane-bound nucleus - B
j. cell wall made of cellulose - P
k. circular DNA - B
l. has chloroplasts - P
m. microscopic - A, P, B
n. example: E. coli - B
Answer:
a. prokaryotic cell - B
b. large vacuole for water storage - P
c. example: blood cell - A
d. enclosed nucleus - A
e. smallest cell type - B
f. eukaryotic cell - A
g. has a cell membrane - A, P, B
h. linear DNA - B
i. no membrane-bound nucleus - B
j. cell wall made of cellulose - P
k. circular DNA - B
l. has chloroplasts - P
m. microscopic - A, P, B
lol i had a test on this.
The levels of organization within an organism are __________, molecule, cell, __________, organ, and organ system. (4 points)
A. atom; tissue
B.compound; kidney
C. element; limb
D. nucleus; membrane
need help fast!!!!
15 points!
Answer:
the answer is c
Explanation:
a thermometer behaves predictably in the presence of heat
biology
1. What is an ecosystem?
2. What are some examples of nonliving things in an ecosystem?
3. What are some factors that could affect the number of organisms in an ecosystem?
4. Why might organisms interact in an ecosystem?
5. Would you expect to find the same kinds of interactions between organisms in very different ecosystems? Why or why not?
6. Why is it important to understand feeding relationships in an ecosystem?
Answer:
1. An ecosystem is a system of interactions between living and nonliving things in a particular environment.
2. Some examples of nonliving things in an ecosystem include sunlight, soil, rocks, air, water, and temperature.
3. Factors that could affect the number of organisms in an ecosystem include availability of resources, predation, competition, and environmental changes.
4. Organisms interact in an ecosystem in order to find food, to find mates, to escape predators, and to compete for resources.
5. No, you would not expect to find the same kinds of interactions between organisms in very different ecosystems due to differences in biotic and abiotic factors.
6. It is important to understand feeding relationships in an ecosystem because understanding these relationships gives us insight into the stability, dynamics, and functioning of the overall ecosystem. It can also provide an understanding of how the ecosystem may respond to environmental changes.
Type the correct answer in each box. Use numerals instead of words.
A force of 25 newtons moves a box a distance of 4 meters in 5 seconds.
The work done on the box is
Nm, and the power is
Nm/s.
In the following set of statements, the first statement is fact. Try to determine whether the second statement is true or false.
Mutations are mistakes or misprints in the DNA molecule.
Such mutations or mistakes can eventually change a tadpole into a fish.
TrueFalse
Answer:
False.
Explanation:
Hope this helps!
Answer:I see that you have made two statements.
The First is TRUE , and the second statement is FALSE.
Explanation:
Regarding the first statement, it is true that mutations are changes or errors in the DNA sequence.
However, the second statement is false. While mutations can lead to changes in an organism's traits, it is highly unlikely for a single mutation to directly transform a tadpole into a fish
The process of evolution involves cumulative changes over long periods, including the accumulation of multiple beneficial mutations and natural selection. A single mutation alone is unlikely to cause such a drastic transformation.
Explain in terms of the water cycle the cause of the general trend in water level from 2000 to 2015 shown in the graph.
Answer: Human use
Explanation: Over the years we humans have gone more demanding for water and the increase in population means increase in use therfore the use in water has increased
Answer:
it decreased in the mater of 15 years which means x is equavllient to yk and is causing erosion and is rather deadly
Explanation:
just explained.
Label the Big Dipper, Little Dipper, and indicate the Polaris.
The Polaris lies in a direct line with the Earth's rotational axis, which is "above" the North Pole (north celestial pole). Its stands almost motionless in the sky, and all the stars of the northern sky appear to rotate around it. The attached image is a clear indication.
How can we describe the Polaris location in the sky?The Polaris appears to remain stationary in the sky while all other stars appear to rotate around it. To locate Polaris in the sky, one must first find the Big Dipper, which is a well-known group of seven stars that resemble a ladle or dipper. If one follows the two stars at the end of the bowl of the Big Dipper, they will point directly to Polaris.
Once located, Polaris can be used as a guide to determine one's direction when navigating at night. Because it is very close to the celestial north pole, its position in the sky is directly above the Earth's geographic North Pole. This makes it a reliable reference point for navigation in the Northern Hemisphere.
Read more about Polaris
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After a bottleneck event, the population of rabbits in an area has significantly decreased. A decade later, the population of the rabbits recovers to its original numbers. Which statement is correct about the rabbits?
They are more likely to survive environmental changes because of the bottleneck event.
They are as likely to survive environmental changes because they survived the bottleneck event.
They are as likely to survive environmental changes because their population has recovered.
They are less likely to survive environmental changes because of the bottleneck event.
Answer: They are less likely to survive environmental changes because of the bottleneck event.
Explanation: There is a lack of genetic variation because of the bottleneck effect, making it harder for the species to adapt to an environmental change.
Common ______ formations in Europe and North America support the continental drift theory
Answer:
The Mid Atlantic Ridge, like other ocean ridge systems, has developed as a consequence of the divergent motion between the Eurasian and North American, and African and South American Plates.
I want an essay on the benefits of plants. Serious answers only.
Answer: I highly suggest that you reword this but here it is...
Plants are beneficial to the lives of many species on Earth. They provide us with oxygen, while also reducing the amount of carbon dioxide in the atmosphere.
Plant go through a process called "photosynthesis." This process allows them to take in carbon dioxide, water, and sunlight, and omit oxygen and glucose. Without plants, this process would only occur in microorganisms. By themselves, microorganisms do not have enough numbers and power to be able to provide enough oxygen for the rest of the species on the planet. All species that rely on oxygen would eventually perish.
Plants also prevent erosion. With their roots, plants hold down soil and stop the soil from moving. They provide structure and strength to the loose soil. If plants were not there to hold down soil, it would be entirely up to humans to provide structure in the soil.
Finally, plants are important to us because they provide us with a food source. Humans use plants as a major source of energy. We eat plants, and mass produce them to feed ourselves. Plants are also a major food source for other animals that we rely for food. Animals that we eat get there energy from plants. If we wiped out the complete bottom part of the food chain, none of the other animals would survive.
Overall, plants are beneficial to us in many ways. They provide us with energy, stop erosion, and give us oxygen. Without plants, it would be impossible for humans to survive, and we would eventually perish.
describe three different places on a bridge that would experience very different forces
Answer:
Three kinds of forces operate on any bridge: the dead load, the live load, and the dynamic load. The first of these terms refers to the weight of the bridge itself.