Can someone please help me . Will mark brainliest !!
Answer:
1. 75%
2. 0%
3. 25%
4. 25%
plz help as soon as possible
Answer:
2nd ans
Explanation:
Which term best describes a group of cells that are similar in composition and function together to perform a task?
A. body system
B. tissue
c. organell
D. organ
Answer:
B. Tissue
Explanation:
Which process is true about natural selection?
Answer:
Natural selection occurs in opposition to evolution. Natural selection favors individuals that reproduce more than others.
Explanation:
How do photoautotrophs make energy?
O They convert carbon dioxide, water, and inorganic compounds into carbohydrates.
O They convert carbon dioxide, water, and organic molecules to carbohydrates.
O They convert carbon dioxide, sunlight, and organic molecules to carbohydrates.
O They covert carbon dioxide, water, and sunlight into carbohydrates.
Answer:
c
Explanation:
Which factor can decrease the rate of a chemical reaction?
Olow activation energy
O high pressure
O low temperature
O high concentration of enzyme
Answer:
Low temperature
Explanation:
because.
Have a great day!!!
The factor that can decrease the rate of a chemical reaction is a low temperature.
What is chemical reaction?A chemical reaction is the chemical transformation of one set of chemical substances into another.
A low temperature is one factor that can slow down a chemical reaction. A chemical reaction is defined as a process that transforms one set of chemical substances into another.
The rate of a chemical reaction is a measure of how quickly the reaction takes place.
A low temperature can slow down a chemical reaction by lowering the kinetic energy of the reacting molecules.
This means the molecules move slower and are less likely to collide with enough energy to break bonds and form new ones. As a result, the reaction rate slows down.
Thus, the answer is low temperature.
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Why is carbon so useful in building organic molecules?
Answer: Carbon is the basis for the organic molecules that constitute life because it can form multiple strong bonds with itself and with other elements.
Explanation:
What is the answer here?
how does the immune lymphatic system help fight against diseases?
environmental science pls own words please need it now and also give me evidence from it.
Answer:
The lymphatic system plays an integral role in the immune functions of the body. It is the first line of defense against disease.
Please help me and hurry
Answer:
5
Explanation:
-5 0 5 10
---------------------------------------------------------
start at 0, move right 3, so ur at 3. then move left 4, so its -1. Then 6 to the right so its 5.
0+3=3-4=-1+6=5
Why is nutrition so important for a patient's recovery?
Do you also have sources that proof that it is so important?
Please help me out!!!
Answer:
because only nutrition give energy and fulfill the requirement of a sick body and with this patients are able to recover their self very quickly. for example we can se doctor always prefer healthy food to patient which contain nutrition .
Explanation:
thank you
All cells contain two proteins called actin and myosin? True or false
Answer: i think its true
Explanation:
True that all eukaryotic cell i.e. muscle cells. contains actin and myosin protein .
What are actin and myosin protein?Actin filaments are responsible for a variety of cell motions, generally in conjunction with myosin. Myosin is a molecular motor prototype—a protein that transfers chemical energy in the form of ATP into mechanical energy, allowing it to generate force and movement. Muscle contraction is the most noticeable type of such movement, and it has served as a model for studying actin-myosin interactions and myosin motor activity. Actin and myosin interactions, on the other hand, are essential for not just muscle contraction but also a range of non muscle cell motions, including cell division, making them important in cell biology.Actin is a protein found in all eukaryotic cells. Actin filaments move along filaments of another protein called myosin to cause cells to contract. It was initially found in skeletal muscle. Actin filaments are less structured in non muscle cells, and myosin is considerably less prominent.Hence, the given statement is true.
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What are the reactants of photosynthesis?
Answer: sunlight, carbon dioxide and water from soil to make glucose
Explanation:
Happens in the chloroplast
Answer:
CORRECT (SELECTED)
Carbon dioxide and water
Explanation:
In photosynthesis, carbon dioxide and water react, along with light energy, to form glucose and oxygen.
Explain how the structures of plant tissues and organs are directly related to their roles in physiological processes.
Answer:
How the structures of plant tissues and organs are directly related to their roles in physiological processes.
o Plant organs are limited to roots, stems, leaves, flowers, fruit and cones.
o Physiological processes are limited to photosynthesis, cellular respiration,
transpiration, and reproduction.
o Plant tissues are limited to meristematic, ground, dermal and vascular tissues.
o Plant structures are limited to cambium, guard cells, phloem, seed, stomata and
xylem
Explanation: Hope this helps have a safe and happy new year
Roots, stalks, leaves, flowers, fruit, and cones are the only organs found in plants. Photosynthesis, metabolic processes, transpiration, and fertilization are the only physiological activities.
Plant and plant tissues:Photosynthesis and the movement of mineral-containing water ions are critical processes in the development of healthy plants. Plants have three primary structures or organs:
LeavesStemsRootsThey're made up of groupings of specialized tissues with structures that are tailored to the functions they do.
Adaptations are distinctive features that help plants survive in their specific settings. Plants rely on their specialized structures to provide their fundamental requirements, protect themselves from predators, and aid reproduction.
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2.
Which of the following examples is a non-renewable source of energy?
wood
nuclear power
hydroelectric
wind
Answer Wood
Explanation: there will always be trees but the will not be wind at all times, nuclear energy was invented, man made so it can run out. I could be wrong. Pls don’t hate if I am.
The atomic number appears
A- The number of protons in the nucleus of each atom.
B- The number of electrons in the nucleus of each atom.
C- The number of protons and electrons combined in each atom.
D- The number of elements in the periodic table.
What does a host cell provide for a virus? *
O A source of thermal energy.
O Protection from the environment.
O Mechanisms for genetic replication.
O Large molecules as a food source.
Answer:
C
Explanation:
Answer:
Large molecules as a food source
Explanation:
When it comes into contact with a host cell, a virus can insert its genetic material into its host, literally taking over the host's functions. An infected cell produces more viral protein and genetic material instead of its usual products.
Which statement correctly defines wind? MARKING BRAINLIEST!
Answer:
C
Explanation:
A cannot be correct because particles will move from areas with higher pressures to lower pressures.
D also accnot be right becuase air does not simply bounce of off earth surface.
B also does not make sense because air partices will not want to move to a "cooler" area.
C Air particles do move from areas of high pressure to areas of low pressure. So, c is the correct answer.
Answer:
C
Explanation:
i think im pretty sure im right if im not delete this
If new experimental findings contradict a scientific theory, what might happen to the theory?
A. The new evidence could be accepted and the theory changed.
B.The theory could become law.
C.The theory could stay, ignoring the new evidence.
D.The new evidence could be rejected because it does not support the theory.
Answer:
A. The new evidence could be accepted and the theory changed.
Explanation:
most reasonable answer
what happens when light hits a mirror
Answer:
pretty sure it reflects the light back
Explanation:
The advantage of having large vertebrae at the base of the vertebral column is having stability in terms of the center of gravity of the person
Answer:
what grade are u in?
Explanation:
if an organisms diploid cells contain 8 chromosomes, how many chromosomes do its haploid cells contain?
Answer:
16
Explanation:
haploid contains single cells where diploid cells contain double
Answer: the answer above me is way of the coorect answer would be 4 because it come in pair for evey 8 dilpoid cells their are 4 chromosnes
Explanation:
Earth's layers are arranged by
Answer: they are arranged in order from the exterior to the interior
Explanation: :the crust, the mantle, the outer core, and the inner core
Answer:
the exterior to the interior – the crust, the mantle, the outer core, and the inner core.
Explanation:
I think that's right♀️
What are four types of water pollution? define each.
Answer:
Categories of Water Pollution
Groundwater. ...
Surface water. ...
Ocean water. ...
Point source. ...
Nonpoint source. ...
Transboundary. ...
Agricultural. ...
Sewage and wastewater.
Explanation:
Using this framework, the three main categories of water pollution are point-source, nonpoint-source and trans-boundary.
Industrialization, discharge of domestic waste, radioactive waste, population growth, excessive use of pesticides, fertilizers and leakage from water tanks are major sources of water pollution
5. The following cell structures are located within cells that make proteins. Which description
best explains the relationship among these cell structures in making a protein?
nucleus
• ribosome
• endoplasmic reticulum (ER)
A. nucleus makes protein → protein winds through the ER → protein folds into active shape
B. nucleus directs ER to assemble the protein → ribosomes surround protein → protein
folds into its active shape
C. ER creates protein → DNA in the nucleus codes for ribosomes to surround protein →
protein folds into its active shape
D. DNA in nucleus codes for protein protein assembled in ribosomes and moves to ER →
protein folds into its active shape
Answer:it’s d
Explanation:
DNA in nucleus codes for protein protein assembled in ribosomes and moves to ER →protein folds into its active shape best explains the relationship among these cell structures in making a protein.
What are the functions of DNA?Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix.
There are four nucleotides, or bases, in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T).
The polymer carries genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.
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Which is the most likely outcome of an increased climate temperature?
a growth of ice caps
b decreased flooding
c lowering ocean levels
d unstable weather problems
Answer:
Unstable Weather patters
Explanation:
Pretty Sure
Among the newly-discovered small noncoding RNAs, one type reestablishes methylation patterns during gamete formation and blocks expression of some transposons. What are these types of RNA called
Answer:
piwi-interacting RNAs (piwi-RNAs)
Explanation:
The piwi-interacting RNAs (piRNAs) are small non-coding RNAs (from 21 to 31 nucleotides) that are abundantly expressed in the animal germline in order to control the expression of target sequences. The piRNAs associate with PIWI proteins from the Argonaute family (AGO) to form an effector complex that binds to complementary target DNA/RNA sequences. These small ncRNAs target Transposable Element (TE) transcripts to suppress TE expression and thus maintain genome integrity. The piRNAs can also guide epigenetic remodeling complexes that suppress gene expression by methylation of target DNA sequences in the nucleus.
Which is a sequence of actions that a system undergoes?
goals
feedback
process
inputs
Answer:
C, process.
Explanation:
A process is a sequence of actions that a technological system undergoes to produce an output.
blood is an example of
Answer:
Blood is both tissue and a fluid. It is because it is a collection of similar specialized cells that serve particular functions. These cells are suspended in a liquid matrix (plasma) which makes blood a fluid
Explanation:
I majored in Biology.
Explain how the farms upriver were adding to the high nitrate levels. gizmo
Answer:
Farmers were adding high nitrate levels from many large corn farms along the river. The farmers spray fertilizers that have ammonia and nitrate onto their crops. During the drought, the farmers used extra fertilizer. As rained, the ammonia and nitrate from the fertilizer were washed into the river.
In the pigs produced 10 pounds of feces that contained ammonia and nitrate. The pit is too small to obtain such large amount. When it rained the waste overflowed in to the river.
Explanation:
The drought from the week before and the large rain fall played a large part in the outcome of the annomia and nitrate exposure to water.
The farms upriver were adding to the high nitrate levels. It was because of the excessive use of fertilizers and inadequate waste disposal techniques.
What are agrochemicals?There are chemicals that are used in agriculture. It includes fertilizers, pesticides, nematicides, insecticides, etc.
How does farm upriver add nitrate?The farms upriver used to apply agrochemicals, especially the ones rich in nitrate and urea. During fewer water conditions they used to apply more. That used to remain in the soil and washed down to the river along with the rain.
The farms did not use adequate waste disposal measures and hence the wastes rich in nitrogen were washed down to the river.
Hence, these practices increase nitrate levels in the river.
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