It's C - Instrumental
Enzyme activity within metabolic pathways is regulated by _____.
A.activators and inhibitors
B.neurons
C.food consumption
D.oxidation
Answer:
A.activators and inhibitors
Explanation:
took test
How do plants and other organisms capture energy from the sun?
through which microscopes were cells first observed? simple microscope, tunneling microscope, compound light microscope, electron microscope
it is a simple microscope
It was a compound light microscope through which microscopes were cells first observed by Robert Hooke. The correct option is C.
What are microscopes?Microscopes are electronic magnifying machines that are sued to see very minute objects and the sample of the cell, like blood, or serum. They contain magnifying glasses which make the small things look clear.
The different types of microscopes that are used in scientific research and experiments are:
Simple microscope.Compound microscope.Electron microscope.Stereo microscope.The majority of microscopes used in research labs and other settings are called compound microscopes because they use separate objective and eyepiece lens assemblies to provide significantly higher magnification powers.
Thus, the correct option is C. compound light microscope.
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What is the period of cell growth and duplication of cell parts called?
Final answer:
The period of cell growth and duplication of cell parts is called interphase. Interphase consists of three stages: G1, S, and G2, during which the cell grows, replicates its DNA, and prepares for division.
Explanation:
The period of cell growth and duplication of cell parts is called interphase. Interphase is the phase of the cell cycle during which the cell grows, carries out normal metabolic functions, and replicates its DNA. It consists of three stages: G1, S, and G2.
During G1, the cell grows and doubles its organelles. In the S phase, the cell replicates its DNA. And in G2, proteins are synthesized that will help the cell divide. After interphase, the cell enters the mitotic phase, which includes mitosis and cytokinesis, resulting in the formation of two daughter cells.
what part of an original isotope number of atoms remains have two half life
Half-life is the time taken by a substance (molecule, drug or other) to lose half of its proportion. Used by extension in the field of radioactivity, the half-life, also called radioactive half-life, is the time at which half of the radioactive nuclei of a source have disintegrated.
The term half-life is often misinterpreted: two half-lives do not correspond to the full life of the product. The half-life is, in fact, the median of the life of a product, that is to say, the duration below which there remains more than 50% of the product, and beyond which there remains less than 50%. So two half-lives correspond to the duration where 50% of the 50% of the product remains, ie 25% (the quarter).
URGENT
Grafting is an ancient practice.
true
false
T or F
ATP is the products of photosystem I?
If false what word would replace ATP to make it a true statement T or F
ATP is the products of photosystem I?
If false what word would replace ATP to make it a true statement
Which of the following polymers is found in cell membranes?
a. lipids
b. dna
c. rna
d. glucose
1. Neutrons are found __________ and have ___________ charge.
in the nucleus; positive
outside the nucleus; neutral
in the nucleus; neutral
Question 2. Which of the following particles has a positive charge?
proton
neutron
electron
Question 3. Which of the following particles has a negative charge?
proton
neutron
electron
Question 4.In which state of matter do the particles move somewhat freely but still not enough to fill the entire space of a container?
solid<-- my answer
liquid
gas
Question 5.In which state of matter are the particles the LEAST attracted to each other?
solid
liquid
gas
Final answer:
Neutrons are found in the nucleus and have a neutral charge. The proton has a positive charge, while the electron is negatively charged. Liquids allow particles to move somewhat freely, and gases have particles that are the least attracted to each other.
Explanation:
Neutrons are found in the nucleus and have neutral charge. Therefore, the correct answer is that neutrons are found in the nucleus with a neutral charge.
The particle with a positive charge is the proton. Protons are constituents of the nucleus and carry a positive electric charge.
The particle with a negative charge is the electron. Electrons orbit the nucleus and are negatively charged.
In the state of matter where particles move somewhat freely but not enough to fill the entire space of a container, the correct answer is liquid. Unlike solids, whose particles vibrate but do not move from place to place, particles in a liquid can move around each other, although they are still attracted enough to stay together.
Particles are the least attracted to each other in the gas state of matter, allowing them to fill the entire space of a container.
Compare the energy conversions in lactic acid fermentation to those in cellular respiration. Considering the differences in ATP production, why would a cell undergo lactic acid fermentation?
Answer:
2 ATPs are produced in fermentation and 38 ATPs are produced in cellular respiration
Explanation:
A cell undergo lactic acid fermentation only when there is no oxygen i.e anaerobic condition only. This usually happens when a person do rigorous exercise and the oxygen demand escalate suddenly which is unmet by normal respiration process.
In fermentation, carbohydrates such as starch or sugar convert into lactic acid or alcohol in the absence of oxygen with production of 2 ATP while in cellular (aerobic respiration) nearly 38 ATPs are produced
Months after a forest fire, some nonnative plants began to grow in the area. why were these plants able to grow?
Final answer:
Nonnative plants are able to grow after a forest fire due to the increased availability of sunlight and open space after the elimination of the dominant tall trees. This process is part of secondary succession, which leads to the eventual recovery and formation of a new climax community.
Explanation:
After a forest fire, the dominant tall trees that previously shaded the ground and absorbed most of the sunlight are no longer present. This loss of canopy opens the area to sunlight, allowing nonnative plants and pioneer species to grow. These plants are often well-adapted to thrive in the open, sunny, and disturbed conditions that a fire creates. The process through which a forest recovers after a disturbance like a fire is known as secondary succession.
Initially, annual plants and grasses will colonize the area because they grow quickly and can take advantage of the sudden abundance of sunlight and space. As these pioneer species alter the environment, such as by enriching the soil with their decomposing biomass, the area becomes more accommodating for other plants like shrubs and eventually small pine, oak, and hickory trees, referred to as intermediate species. Over time, a new climax community forms, resembling the original forest's species composition.
Anna waters her plants with salty water to help them grow better. Is her thinking correct?
No. The salt will interfere with absorption of water and the plants will die.
No. The salt will cause the water to diffuse out of the plants and they will wilt.
Yes. Salt will increase the water uptake of the plant.
Yes. Salt will provide the plant with sodium and chloride ions.
Anna's assumption that salty water helps plants grow better is incorrect. High salinity in watering water can cause dehydration and toxicity in plants, resulting in wilting or death. While some specialized plants can tolerate high salinity, it poses serious osmotic stress for most plants.
No, Anna's thinking is not correct. Watering plants with salty water can have detrimental effects on their growth and survival. Salinity in the water creates an osmotic effect that can cause water to diffuse out of the plants, leading to wilting and death. This is due to the plants' inability to absorb water efficiently when competing with high salt concentrations. Consequently, salt does not necessarily increase water uptake in plants but rather creates osmotic stress, posing a threat to their well-being.
In high-salt conditions, two main problems arise for plants: osmotic stress and the accumulation of toxic ions. The osmotic problem emerges as the soil's salt concentrations escalate, making it difficult for plants to obtain water, evoking a state of drought stress. Additionally, toxic ion accumulation occurs when saline levels are high, leading to detrimental effects on the cells, and potentially plant death if the salts are not efficiently excluded or sequestered.
Some plants have developed mechanisms to excrete sodium or sequester it in vacuoles to cope with saline conditions. There are specialized plants, known as halophytes, that have adaptations enabling them to survive in high salt environments. However, these are exceptions rather than the norm. For most plants, exposure to high salinity can lead to deleterious outcomes and negatively impact their growth and development.
A one-year-old child can classify animals and people. please select the best answer from the choices provided t f
Answer: True a one-year-old child can classify animals and people
Explanation:
In the age of just ten months babies can begin to develop large concepts for example it can differentiate animals, people, events and even objects. A one year old baby’s personality starts to shine through as the baby starts to figure out its likes and dislikes. Babies learning, observing, testing and figuring out how to react to things also emerge by time.
Muscle cells would contain a high number of
A. lysosomes.
B. mitochondria.
C. mRNA.
D. Golgi bodies.
The diagram shows a straight chain of glucose molecules.
Which polysaccharide is shown?
cellulose
glycogen
chitin
starch
A man who is heterozygous for tongue rolling and has a normal vision and a woman who cannot roll her tongue and is heterozygous for colorblindness have a child. What is the probability that it will be able to roll his/her tongue and have normal vision? Tongue-rolling is due to a dominant allele. Color Blindness is caused by an X-linked recessive gene. ...?
DFG and JKL are complementary angels. m DFG=x+2,and mJKL=x-4. Find the measure of each angle
Answer:
DFG = 48°.
JKL = 42°.
Explanation:
DFG and JKL are the complementary angles.
Complementary angles may be defined as the angles that has the sum of 90°.
∠DFG + ∠ JKL = 90°.
∠DFG = x+2 and ∠ JKL = x-4.
x+2 + x-4 = 90°
2x- 2 = 90°
x = 46°.
DFG = x+2 = 46+ 2 = 48 °.
JKL = x-4 = 46-4 = 42°.
Thus the answer is DFG = 48 and JKL = 42°.
Pollution can be caused by natural processes. true or false.
Answer:
True.
Explanation:
One and effective example is forest fires. They tend to happen naturally also, in hot seasons. Also, we have volcanic eruptions, wind erosion, natural radioactivity...
Just remember that pollution means the presence of contaminants that causes adverse changes, against natural equilibrium.
1. What is the force behind mass movements?
*the sun's energy
*flowing water
*gravity
*moving ice
2. Which of the following is NOT true about mass movements?
*Some mass movements are too slow to be seen.
*Mass movements always lead to landslides.
*Gravity is the driving force behind all mass movements.
*Mass movements are always downslope.
3. Oversteepened slopes often lead to mass movements because _____. (1 point)
*plants cannot grow on them
*the angle of their slope is between 10 and 20 degrees
*the angle of their slope is less than 20 degrees
the angle of their slope is greater than 40 degrees
4. When a block of material moves downslope along a curved surface, the type of mass movement is called _____.
*a rockfall
*a rockslide
*a slump
*creep
5. A relatively rapid form of mass movement that is most common in dry mountainous regions is _____.
*creep
*a mudflow
*a slump
*an earthflow
6. The average annual precipitation worldwide must equal the quantity of water _____.
*evaporated
*transpired
*infiltrated
*locked in glaciers
7. The ability of a stream to erode and transport materials depends largely on its ______.
*width
*length
*velocity
*density
8. The vertical drop of a stream channel over a certain distance is called _____.
*discharge
*channel roughness
*gradient
*runoff
Mass movements are driven by gravity and can range from slow creeps to rapid landslides. The key factors in these phenomena are the steepness of slopes, type of material, and climate. The eroding and transporting power of a stream depends on its velocity, and the gradient defines the stream's vertical drop.
Explanation:The force behind mass movements is, indeed, gravity. Mass movements always trend downslope due to the gravitational force. However, it's not accurate to say mass movements always lead to landslides; they vary in speed and scale. They could be a slow creep or a rapid avalanche.
Oversteepened slopes often lead to mass movements due to their angle being greater than 40 degrees. A block of material moving downslope along a curved surface is commonly referred to as a slump.
A rapid form of mass movement common in dry mountainous regions is rockfall. Water balances in the world environment are maintained since the average annual precipitation worldwide must match the quantity of water evaporated. The power of a stream to erode and transport material mainly depends on its velocity, rather than its width or length.
The vertical drop of a stream channel over a preset distance is described as its gradient.
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Local topography and sea surface temperature contribute to differences in climate between various localities.
The end of a river or stream is the _____.
transition zone
mouth
source
headwater
Answer:
The mouth
Explanation:
Remoras, or scker fish, attach themselves to sharks and travel with them. When the sharks feed, the remora detach themselves and feed on pieces of fish the sharks left behind. What two types of interactions are described in this scenario?
a.
Predation and commensalism
b.
Predation and mutualism
c.
Competition and parasitism
d.
Competition and commensalism
The right option is; a. Predation and commensalism
Predation is an interaction between organisms in which one organism (the predator) benefits from another organism (the prey), while commensalism is also an interaction between organisms of different species in which one species benefits from the other without either harming or benefiting the latter. From the question, the remoras benefits from the relationship by living on sharks and feeding on the leftovers of the sharks, but the sharks are not affected in any way. The relationship describes predation and commensalism.
__________are specialized plant epidermal cells that lie on either side of stomata. these cells regulate the opening and closing of the stomata they surround and also regulate gas exchange and water loss in the plant tissue.
please anyone?
True or False. Wind blows due to the differential heating of earth's surface.
True
False
Heat's effect on the wind cycle is most easily observed near the sea. During the day, the ocean absorbs heat from the surface, keeping the air above it cooler than above the land. When the warm air rises from the shore, the cooler air from the ocean blows in to take its place. At night, the land cools quickly, while the ocean radiates the heat it absorbed, keeping the air above warm. This reverses the effect, causing the air offshore to rise and creating a breeze from the land. Uneven heating can also occur due geographical features. A mountainside exposed to the sun will warm more than a shadowed valley below it, creating a wind that blows uphill during the day and downhill at night.
The same principle is responsible for global wind patterns. The polar regions receive less solar radiation than areas near the equator, resulting in a global shift in temperature according to latitude. This, along with differences in temperature and density in various layers of the atmosphere, creates global wind patterns like the jet stream that help drive weather systems.
Hope this helped
Other than water, what else expands when frozen?
Lactobacillus acidophilus (below) is a probiotic microorganism typically found in the human small intestine. It has a cell wall made of peptidoglycan. It aids in the process of digestion and can commonly be obtained through sources such as acidophilus yogurt. Which characteristic proves Lactobacillus acidophilus is from the specific kingdom Eubacteria?
It is multicellular.
It has a cell wall.
It is a microorganism.
It has peptidoglycan.
The right answer is It has peptidoglycan.
Eubacteria are not multicellular beings, but are unicellular.
Eubacteria certainly have a cell wall, but we must not forget that plant cells also have a cell wall, so this is not really a feature.
Eubacteria are microorganisms but there are eukaryotic microorganisms, so it is not a characteristic.
Peptidoglycan (or murine, or mucocomplex, or mucopeptide) is a characteristic component of the bacterial wall (not found elsewhere) maintaining the shape of cells and providing mechanical protection against osmotic pressure. It forms a thin layer in Gram-negative bacteria and a thick layer in Gram-positive bacteria.
The National Wildlife Refuge provides land for fish, wildlife, and plants.
True
False
True
The The National Wildlife Refuge were started in 1903 when there was need to save brown pelicans. This refuge provides home to more than 700 varieties of birds, more than 1000 species of fish, 250 kinds of reptiles and amphibians. They also provide home to countless number of invertebrates and wildlife. Along with animals the National Wildlife Refuge also provides shelter to a large number of plant species.
The statement is true.
National Wildlife Refuge is the United States premiere network of public lands and waters which provide habitat for fish, wildlife and plants. It is administrated by the US Fish and Wildlife Service and thus looks after the protection of endangered and vulnerable species. It manages migratory birds and restores nationally significant fisheries in the country.
Which of the following are other natural hazards that can occur due to volcanic activity?
Which of the following are other natural hazards that can occur due to volcanic activity?
Select all that apply
A. Fires
B. Tsunamis
C. Earthquakes
D. Landslides and mudslides
E. Flooding
Answer:
The answers are B, C, and D.
Explanation:
∞∠⇆ω⇔×÷∈↑↓≈∧≤ÇÏèÿÉÇÏÉÔ
Energy moves in the form of energized.......?
Energy exists in different forms, including chemical, mechanical, radiant, and electrical energy.
Explanation:Energy exists in different forms, such as chemical energy, mechanical energy, radiant energy, and electrical energy. Chemical energy is stored and released as chemical bonds are formed and broken. Mechanical energy directly powers physical activity. Radiant energy is emitted as waves, such as in sunlight. Electrical energy is the power of moving electrons.
Chemical Energy: This is the energy stored in the bonds between atoms and molecules. It's released during chemical reactions. For example, the energy in food is released and converted into other forms when it's digested.
Mechanical Energy: This is the energy associated with the motion or position of an object. It can be either kinetic energy (associated with motion) or potential energy (associated with position). For example, a moving car has kinetic energy, while a book on a shelf has potential energy.
Radiant Energy: Also known as electromagnetic energy, this form of energy includes visible light, radio waves, X-rays, and other forms of electromagnetic radiation. It travels in waves and carries energy.
Electrical Energy: This is the energy associated with the movement of electrons. It's what powers electrical devices and flows through wires to provide electricity for various purposes.
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Which statement about soil color is true?
Answer
Soils do not vary in color based on their location on Earth's surface.
Soils far from the equator are always darker.
Soils vary in color based on their location on Earth's surface.
Soils close to the equator are always darker. ...?
Answer:
3
Explanation: