Fats are a primary example of which class of biomolecule? *
5 points
carbohydrates
lipids
proteins
nucleic acids
Answer:
Lipids
Explanation:
Lipds are fats
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Scientists once believed that modern-day reptiles were the only living descendants of dinosaurs, which were reptiles. Accumulating fossil evidence has now suggested that the most recent dinosaurs gave rise to birds, making birds one of the closest living relatives of dinosaurs.
What statement provides the strongest evidence to support the claim that birds evolved from dinosaurs?
Answer:
A biologist discovered a young, four-legged animal. The animal had lungs, seemed to fertilize internally, and its outer surface was covered with scales. In which class of animals is the biologist likely to place the animal?
reptile
Certain traits, such as color blindness, are determined by an X-linked recessive gene. A couple in which both have normal vision have a color-blind son. The probability of this couple having a daughter who is a carrier is
Answer:
A daughter can become a carrier in one of two ways – she can acquire the ‘gene’ from a carrier mother or from a color blind father.
Explanation:
If a woman has only one color blind ‘gene’ she is known as a ‘carrier’ but she won’t be color blind. When she has a child she will give one of her X chromosomes to the child. If she gives the X chromosome with the color blindness ‘gene’ to her son he will be color blind, but if he receives the X chromosome which doesn’t carry the color blindness ‘gene’, he won’t be color blind.
A color blind boy can’t receive a color blind ‘gene’ from his father, even if his father is color blind, because his father can only pass an X chromosome to his daughters.
A color blind daughter therefore must have a father who is color blind and a mother who is a carrier (who has also passed the color blindness ‘gene’ to her daughter). If her father is not color blind, a ‘carrier’ daughter won’t be color blind. A daughter can become a carrier in one of two ways – she can acquire the ‘gene’ from a carrier mother or from a color blind father.
A potential answer to a research question is a(n)
A. theory
B. observation
C. question or problem statement
D. hypothesis
A research question is the basis of the experimental analysis of the subject matter. A hypothesis is said to be the potential solution to a research question. Thus, option D is correct.
What is a hypothesis?The hypothesis has been defined as the supposition that acts as the basis of the research and experiment and has been constituted of some evidence and facts to formulate the research question.
It acts as a starting point for any investigation and research and must be falsifiable. They should be testable in order to determine the verifiability of the research topic. If the tested hypothesis is correct then further research is conducted.
It can also be defined as an educated guess that is based on some prior knowledge and facts that are deduced through experiments.
Therefore, the hypothesis is a potential solution.
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What colour is the chlorophyll in a plant?
Answer:
green
Explanation:
The green color of chlorophyll is secondary to its importance in nature as one of the most fundamentally useful chelates. It channels the energy of sunlight into chemical energy, converting it through the process of photosynthesis
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The diagram shows two cells. Identify structures C, D, and E and explain how they work together to perform a specific process within the cell.
Structure C, D, and E in the diagram represent the endoplasmic reticulum, the ribosome, and the Golgi apparatus respectively.
When the ribosomes are attached to the endoplasmic reticulum, they give it a rough appearance.
The ribosome, endoplasmic reticulum, and the Golgi apparatus work together in the synthesis and transport of protein within the cell. In other words, they are all involved in the secretory pathway of cells.
The ribosome represents the actual site of protein synthesis.The endoplasmic reticulum gets involved by folding the synthesized proteins and packaging them into secretory vesicles. Thereafter, the vesicles are transported to the Golgi apparatus.The packaged proteins undergo further processing within the Golgi apparatus before they are exported to the cell membrane via the cytosol.In other words, the 3 organelles work together to form the secretory pathway of the cell. They are involved in the synthesis, packaging, processing, and eventual transport of proteins to their target sites.
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How do catalysts affect a chemical reaction?
lower activation energy
provide activation energy
increase activation energy
lose activation energy
Answer:
lower activation energy
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Explanation:
Catalysts make such a breaking and rebuilding happen more efficiently. They do this by lowering the activation energy for the chemical reaction. Activation energy is the amount of energy needed to allow the chemical reaction to occur. The catalyst just changes the path to the new chemical partnership.2
Answer:
Explanation:
Catalysts help a chemical reaction to happen by lower activation energy
Even though they have several differences, a bacterium and a human cell will both contain DNA. With respect to evolution, what does this fact suggest?
Answer:
the fact that they both contain DNA in the nucleus of their cells, this suggests that they had a common ancestor they evolved from.
The fact that they both contain DNA in the nucleus of their cells, this suggests that they had a common ancestor they evolved from.
What are the features of DNA?Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and reproduction.
DNA is a complex, long-chained molecule that contains the genetic blueprint for building and maintaining all living organisms. Found in nearly all cells, DNA carries the instructions needed to create proteins, specific molecules essential to the development and functioning of the body.
DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins.
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Which statements explain why rocks weather at different rates
Answer:
Rainfall and temperature can affect the rate in which rocks weather. High temperatures and greater rainfall increase the rate of chemical weathering. 2. Rocks in tropical regions exposed to abundant rainfall and hot temperatures weather much faster than similar rocks residing in cold, dry regions.
compare the external structure of the mammalian skin with that of the epidermis of a leaf.
Compare ( similarities and differences). please give just the correct answer I will mark you brainliest
Answer:
Mammalary skin
Skin is layered
Have hairs on it.
Acts as protectector
not so hard as epidermal
Epithelial
Can be layered
Dont have hair
Acts as protective layer also supports plants
Its hard
Scientific inquiry is driven by a scientist’s
creativity.
professionalism.
ethics.
perseverance.
Answer:
perserverance
Explanation:
they want to find out whats happening through inquiry and experiments.
The diagram shows a food web.
A flowchart. Cycle 1. 1, Grass. 2, Grasshopper. 3, Shrew or Mouse. 4, Fox. Cycle 2: 1, Grass. 2, Mouse. 3, Fox or Snake. Cycle 3: 1, Grass. 2, Rabbit. 3, Fox.
What would most likely happen to the food web if the amount of grass drastically decreased?
The mouse and grasshopper would be affected.
Only the rabbit would be affected.
The grasshopper, mouse, and shrew would be affected.
The entire food web would be affected.
Answer:
The entire food web would be affected
The entire food web would be affected if the amount of grass drastically decreased.
What is a food web?A food web is an chart or diagram in the form of a web showing the interdependence of different organisms as they obtain food.
All organisms are related in a food web.
In the food web shown, grass is the primary producer.
A drastic decrease in the amount of grass will affect all the organisms in the food web.
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identify clues you would look for to judge whether a claim is based on science or pseudoscience
Answer:
replication of results, peer view, and proofs obtained from a lot of ...
Explanation:
A virus isn’t technically classified as a living thing.
Answer:
It's true cause it got no nucleus
Explanation:
[tex].[/tex]
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1.) Which statement correctly describes the relationship between the volume of a gas and it’s temperature, in Kelvin, assuming pressure is held constant?
A.) The relationship is directly proportional; as temperature increases, volume decreases in the same way.
B.) The relationship is inversely proportional,
As temperature increases, volume decreases in the same way.
C.) The relationship is directly proportional, as temperature increases, volume increases in the same way.
D.) The relationship is inversely proportional, as temperature increases, volume increases in the same way.
2.) which statement explains the molecular changes that occur in an enclosed gas as the pressure increases and the temperature is held constant
A.) an increase in pressure causes particles to move farther apart, decreasing the volume
B.) an increase in pressure causes particles to move farther apart, increasing the volume
C.) an increase in pressure causes particles move closer together, decreasing the volume.
D.) an increase in pressure causes particles to move closer together, increasing the volume.
3.) The ideal gas law is represented by PV = nRT. as volume is held constant and the temperature increases, how would the pressure be expected to change
A.) it will remain constant.
B.) it would decrease.
C.) it would increase
D.) it would become zero
4.) when the pressure of gas decreases, which quantity will increase, assuming all other variables are held constant?
A.) R
B.) n
C.) T
D.) V
5.) two balloons hold two different gases. The gases are held at the same pressure, volume, and temperature. Which quality can difference between the two gases?
A.) The molar volume of each gas
B.) The mass of each gas.
C.) The gas constant of each gas.
D.) The number of moles of each gas
Answer:
1. The relationship is directly proportional; as temperature increases, volume increases in the same way.
2. An increase in pressure causes particles to move closer together, decreasing the volume.
3. It would increase.
4. V
5. The mass of each gas.
Just took it
Remember that the equation for the ideal gas is:
P*V = n*R*T
Where:
P = pressure
V = volume
n = number of moles
R = constant of the ideal gases.
T = temperature.
1) If the pressure is held constant (we also assume n is constant, because usually, the number of moles does not change).
Then we can write
V = (n*R/P)*T
and (n*R/P) is a constant.
Then the above relation is a proportional relation.
So the correct option is C: The relationship is directly proportional, as temperature increases, volume increases in the same way.
2) If the pressure increases and the temperature is held constant, then the equation:
V = (n*R/P)*T
can be used.
Now the temperature is constant, so we can write this as
V = (n*R*T)/P
Where now (n*R*T) is a constant.
So now we have an inversely proportional relation, when P increases, the volume should decreases. And a decrease in volume happens because the molecules move closer together, so the correct option is C:
"an increase in pressure causes particles move closer together, decreasing the volume."
3) Now the volume is constant, then we can write:
P = (n*R/V)*T
Exact same thing as in the first case, this is a proportional relation, so if the temperature increases, also does the pressure.
The correct option is C again.
4) If the pressure decreases then temperature also decreases, as we saw above.
And as the temperature decreases, the volume increases, as we saw in point (2), then the correct option is D, i the pressure decreases, the volume increases.
5) We have two different gases with the same values of T, V, and P.
By the equation:
P*V = n*R*T
And knowing that R is a constant, we can see that n should also be the same value for both gases.
Then the molar volume of each gas, V/n, is also the same.
Finally, the only thing that can be different in the gases is the thing that does not appear in the equation, and that is density/mass. So we can conclude that the gasses have different masses (thus different density, as they have the same volume)
Then the correct option is B; the mass of each gas.
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What characteristic of life is related to a organ transplant
Answer: personality
Explanation: after an organ transplant some people have had personality changes I hope this helps I’m sorry if I get it wrong :(
differentiate between gastrovascular cavity and alimentary canal
any differentiate between g
A.state two characteristics of the larval stage of a mosquito.
Answer:
Larva - (plural: larvae) "wriggler" lives in water; molts several times; most species surface to breathe air. Pupa - (plural: pupae) "tumbler" does not feed; stage just before emerging as adult. Adult - flies short time after emerging and after its body parts have hardened.
What are the rules for writing a hypothesis?
What is the main cause of urban migration in the United States?
a.
Rural communities are no longer necessary.
b.
Urban dwelling provides better access to goods, services, and jobs.
c.
Urban communities reduce human impact on the environment.
d.
Rural communities are unable to support life in the long-term.
Answer:
b
Explanation:
because jobs are available and a better life is guaranteed too
What set the stage for wind erosion in North America
Answer:
Wind erosion in the United States is most widespread on agricultural land in the Great Plains states. Wind erosion is also a serious problem on cultivated organic soils, sandy coastal areas, alluvial soils along river bottoms, and other areas in the United States.
Which change of state is shown in the model?
A. condensation
B. evaporation
C. sublimation
D. deposition
what is irrigation ??
Answer:
Irrigation is the artificial process of applying controlled amounts of water to land to assist in the production of crops, but also to grow landscape plants and lawns, where it may be known as watering.
Answer:
Irrigation is the artificial application of water to the soil through various systems of tubes, pumps, and sprays. Irrigation is usually used in areas where rainfall is irregular or dry times or drought is expected. There are many types of irrigation systems, in which water is supplied to the entire field uniformly.
SOMEONE WHOS GOOD AT SCIENCE I BEG U HELP. ILL GIVE U A LOT POINTS. Fill in/ answer as many from the pic as u can, pls don’t guess!! Number them pls
Answer:
can you snap the picture again and please make it straight when snapping, maybe I can help you
Answer:
please take another photo
Explanation:
What is the volume of a box that is 3 m long, 0.5 m high, and 2 m wide?
Answer:
3 meters cubed
Explanation:
How do scientists determine the relative age of a rock or fossil
Answer:
they use carbon 14 which has a half life of 5730 years
the blank is anterior to the blank
help im stuck lolllllllllll
what are the advantages and disadvantages of both asexual and sexual repoduction
?
Answer:
Asexual Reproduction advantage: Time Efficient; no need to search for mate, requires less energy.
Asexual Reproduction disadvantage: No variation - if the parent has a genetic disease, offspring does too.
Sexual Reproduction advantage: Variation, Unique, organism is more protected.
Sexual Reproduction disadvantage: Requires two organisms, requires more energy.
Explanation:
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define the purpose for the field of biology
biology is a branch of science that deals with living organisms and their vital processes.
Answer:
As a field of science , biology helps us understand the living world and the ways its many species (including humans ) function, evolve, and interact. advances in medicine , agriculture , biotechnology, and many other areas of biology have brought improvements in the quality of life
