Answer:
B. population
What kind of banded rock is formed by cavities in rocks left by gas bubbles?
A. Fossils
B. Marble
C. Agates
I need to know it ASAP thanks
explain what part of the day condensation usually occurs and why
Answer:
Condensation is the formation of liquid drops of water from water vapor. ... Condensation in the atmosphere usually occurs as a parcel of rising air expands and cools to the point where some of the water vapor molecules clump together faster than they are torn apart from their thermal energy
Explanation:
If the activation energy required for a chemical reaction were reduced, what would happen to the rate of the reaction?
Answer:
The rate would increase
Explanation:
The picture shows a contractile vacuole of a unicellular freshwater organism. The contractile vacuole regulates the flow of water into and out of the cell in an aquatic environement. What condtions cause the contracile vacuole to fill with water? Your answer: The concentration of water is greater outside the cell than inside the cell. The concentration of water inside the cell is the same as the concentration outside the cell. The temperature of water in the vacuole is higher than the temperature of its environment.
Answer:
The concentration of water is greater outside the cell than inside the cell.
Explanation:
In living cells, water moves by Osmosis across the cell membrane, which acts as the semi-permeable membrane. Osmosis is the movement of water molecules from a region of high water concentration (low solute concentration) to a region of low water concentration (high solute concentration).
The contractile vacuole of this freshwater organism helps regulate water intake and exit by storing excess water. According to osmotic flow, water will flow into the organism via its cell membrane (semi-permeable membrane) because the concentration of water outside the cell is high than inside the cell, hence, this causes an osmotic gradient causing water to flow into the cell. The water that flows into the cell is stored in the Contractile vacuole.
function of a mitochondion
Answer:
mitochondria are to produce the energy currency of the cell, through respiration, and to regulate cellular metabolism.
Explanation:
the role of mitochondrion is to generate the energy commodity of the cell, by respiration, and control of cell metabolism.Mitochondrial is the ATP synthesis site for the cell. The amount of mitochondria present in a cell is also a strong predictor of the cell 's rate of metabolic activity; cells that are very metabolically active, such as hepatocytes, may have more mitochondria.
hope this helped!
15. Unlike identical twins, fraternal twins
A. are produced from two identical embryos.
B. result from the same fertilized egg.
C. are always the same sex.
D. result from two eggs fertilized by different sperm.
Mark for review (Will be highlighted on the review page
Which statements regarding hypotheses are true?
Check all that apply.
Answer:
Hypotheses are based on observations.
Hypotheses are formed from testable questions.
Hypotheses are tested with controlled experiments.
Explain the relationships between five members of a food web. Include at least one producer and one high-level consumer
Answer:
the sun shines on earth, which through photosynthesis in a humble blade of grass turns into food and energy for the grass. now a small mouse hops along, stomach growling. it eats our blade of grass now itself getting energy. the naive, full mouse hops through the field before it squeaks in horror. a snake slinks towards it. the mouse is too slow. and the mouse breathes his last breath. the snake swallows it whole. stomach content now digesting its new energy sleeps. before it has the chance to react a hawk snatches it up in her claws. killing it she eats. this snake is poisonous, the next time our hawk flies, she stumbles, then falls. vanquished by poison her lifeless body lies in the dirt. her nutrients go into the soil, thanks to decomposers like worms. her nutrients help new grass blades grow, and the cycle continues.
I hope this helps u!
Pls give brainliest(had 40 down to 2 for no reason and worked long) and a thx ;)
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DNA and RNA are frequently
Answer:
A
Explanation:
I know because I actually just learned this yesterday lol. DNA gets transcribed then tRNA translates the mRNA to know what amino acids to make.
hope it helps and I can explain more if you need.
Review the image shown right. Then, use the
drop-down menus to complete the following
sentence.
In transcription within the nucleus, RNA is made
through
pairing with the
antisense strand in
DONE
Answer:
The correct answer is - Base pairing rule and DNA.
Explanation:
According to the base pair rule during transcription, along with antisense strand DNA, the RNA was made and the bases of the purines and pyrimidines strands bind together, Uracil paired with the A-strand and the C strand being paired to G-strand in transcription within the nucleus.
Thus, the correct answer in the first line is "Base-pairing rule" while in the second line is "DNA".
Answer: The answers are In transcription within the nucleus, RNA is made through
✔ base
pairing with theantisense strand in
✔ DNA
Explanation: These are the answers because they just are!!! Also screenshot fro proof
In the triglyceride molecule shown below what are the three molecules
attached to the glycerol molecule?
A Glycolic acids
B. Fatty acids
C. Nucleic acids
Amino acios
Answer:B. Fatty acids
Explanation:
Multiple organs which are engaged in a specific process form a(n) ???
Answer: organ system
Explanation:
For example the stomach and intestines that work together to digest food would be a digestive system. so depends on the organs that are working together.
Which of the following is an example of a chemical change?
A. Breaking wood
B. Melting ice
C. Bending metal
D. Baking bread
Answer:
D. Breaking bread is an example of chemical reaction.
As in mitosis, in Meiosis the chromosomes move toward opposite poles of a cell in____.
Answer
The chromosones move toward opposite poles of a cell in Anaphase
Animals cells have which of the following characteristics? Select all that apply
Answer:
Animal cells have the following characteristics: no cell wall, no large vacuole, only small ones, cleavage furrows.
Explanation:
hope this helps
n this lab, you will simulate birds with three different beaks. After watching the birds feed, you will remove fruit to simulate a change in the environment. What question are you answering by doing this observation? Write it by filling in the blanks below.
What is the effect of…
…on…
Answer:
what is the effect of food availability/competition on natural selection
Explanation:
Something along those lines, this is similar to the Galapagos finches when there used to be just one species but due to natural selection and limited food due to competition, the beaks changed to be able to eat the other food s available that they originally could not eat. There are now about 14 due to this.
I hope this helps u!
Pls give a brainliests(had 40 down to 1 no reason) and a thx ;)
Answer:
What is the effect of the type of food available on the frequency of different types of bird beaks?
Explanation:
This is the true answer. Plz give me brainiest, need 5 more! ;)
Which of the following factors will most likely limit the light-dependent reactions of photosynthesis?
A. Light intensity and light quality
B. Temperature and light intensity
C. Carbon dioxide concentration and light quality
D. Carbon dioxide concentration and temperature
Answer:
C
Explanation:
Questionnaire 15 of 20 :
Select the best answer for the question.
15. What term refers to the point below the surface where an earthquake begins?
O A. Seismic zone
O B. Hypocenter
O C. Epicenter
O D. Seismogenic zone
Answer:
In my opinion I think its B. Hypocenter
Sorry if wrong
the DNA is tightly wrapped around histone proteins in a chromosome why is this packaging necessary?
1. Because the dna molecules will down without it .
2. Because the dna molecules will dissolve in cell water .
3.) because the long dna will fit inside the cell.
4.) because the dna needs to attach itself to support .
Answer:
3.) because the long dna will not fit inside the cell.
Explanation:
This question is oddly written. At first glance, I can tell it's not 1 or 2 because DNA doesn't "dissolve" in cell "water", nor will it "down" (I'm assuming this means "drown"?).
The main reasons for DNA packaging are so that the DNA can fit into the cell, and so it's protected from damage. The DNA is vital to the cell, so it protects it by coiling it up. Coiling and packaging are also important when it comes to gene expression.
Answer: The correct answer is C
Explanation:
I took the test
What helps mitochondria make proteins by itself? 1. Presence of membrane 2. Presence of ATP 3. Presence of Ribosomes 4. All of the above
Answer:
presence of ribosomes because they are the main sites of production of proteins
Answer:
3. Presence of ribosomes
Explanation:
Mitochondria has its own ribosomes which help in the synthesis of protiens
A wet mount slide from a sample of Elodea leaf cells and a slide from a sample of red blood cells were initially examined using a light microscope. The remaining
portions of the two cells samples were then placed into a 20% sucrose solution. After 30 minutes, the cells were again examined using a light microscope. Which
statements best describes their appearance?
Your answer:
A. The leaf cells had undergone plasmolysis while the red blood cells had shriveled.
B. The leaf cells were swolle and turgid while the red blood cells remain unchanged.
C. Both the leaf cells and the rat blood cells had swollen and burst.
Answer:
B
Explanation:
The leaf cells were swolle and turgid while the red blood cells remain unchanged.
What is shown in the diagram?
an electromagnet
a generator
a motor
a turbine
Answer:
an electromagnet
Explanation:
What molecule makes the trunk of a tree sturdy?
O A. Fructose
O B. Disaccharide
C. Cellulose
O D. Glucose
Answer:
C. Cellulose
Explanation:
What is the difference between a scientific theory and a scientific law?
A. A law is a description of natural events. A theory attempts to
explain the causes of natural events.
B. A law is an educated guess. A theory is a fact.
C. A theory is an educated guess. A law is a fact.
D. A theory is a description of natural events. A law attempts to explain the causes of natural events.
Coastal plains are also referred to as ____. a. marshes c. interior plains b. lowlands d. plateaus
The correct answer is B) lowlands.
Coastal plains are also referred to as lowlands.
This region of the United States is a flat land next to the sea. Oftentimes this region is divided from other parts by mountain chains. We are talking about the coastal plains along the Atlantic Ocean. This low relief region of the East Coast extends for 2,200 miles from the state of New York to the state of Florida.
Answer:
b. lowlands
Explanation:
How would pH levels decrease due to production of fatty acids
Answer:
Fatty acid synthesis is the creation of fatty acids from acetyl-CoA and NADPH through the action of enzymes called fatty acid synthases. This process takes place in the cytoplasm of the cell. Most of the acetyl-CoA which is converted into fatty acids is derived from carbohydrates via the glycolytic pathway.
The example of a whale beached by the tides illustrates that
1. tides occur twice a day
2. tides impact marine life
3. tides are a leading killer of whales
4. tides are usually deadly and destructive
Answer:
I think its B
Explanation:
why can AIDS be classified as both an infectious disease and an immune system disorder ?
Answer:
Because AIDS can not only be passed from person to person but it can also affect your immune system in ways other infections diseases can not.
Explanation:
for example: type 1 diabetes is an auto-immune disorder and can not be passed on by bodily fluids. chlamydia is an infectious disease that can be passed on by bodily fluids.
AIDS is an auto immune disorder because it affects the immune system in the same ways that other auto-immune disorders do. this being so it can all so be found in the blood and passed on like an infection where as auto-immune disorders normally dont live in a persons blood.
sorry if this is confusing. hope this helps
I always give brainliest, 5 stars and thanks to a good answer!!! :)
Name 4 ways that different types of disease can interact to make a person ill.
Answer:
Modes of transmission or means of transmission is defined as the movement or transmission of pathogen from infected person or any reservoir to other person.
4 ways or modes of transmission of diseases include:
Contact (direct and/or indirect) - Direct contact include physical relation between infected person or susceptible person such as kissing, sexual contact or transfer of oral secretion. Diseases caused by direct contact include small pox, pink eye and hepatitis a and B. Indirect contact include transmission of diseases form infected person to susceptible person through a infected surface such as infected needle.Droplet: water droplet coming out of the mouth, perspiration or other open parts of the body carries pathogens to susceptible person. sneezing and coughing are most common of droplet ways through which diseases spread.Airborne: Some of the diseases are spread through means of air such as chickenpox virus, norovirus, measles morbillivirus, Mycobacterium tuberculosis and influenza virus et-cetra.Vector: Vectors are defined as an organism that carries disease causing pathogens from infected person to other host body. Fleas or other insects are example of vectors.Hence, 4 ways that different types of disease transmission that can make a person ill are droplet, Contact (direct and/or indirect), vectors and airborne.
