2.
What happens in the process of photosynthesis?
A. Plants transform energy from the sun into chemical energy.
B. Plants use oxygen to store energy in food.
C. Animals use chemical energy in food to carry out life functions.
D. Animals transform energy stored in sugar into energy stored in fat.
Answer:
A, Plants transform energy from the sun into chemical energy.
If the DNA molecule is only composed of four possible nitrogen bases, how can thousands of different proteins be formed from such a limited set of fixed shapes?
Answer:
nucleotides are only building blocks whose combinations determine different codons which subsequently associate in a sequential manner in order to create different amino acid combinations
Explanation:
A gene is a specific segment of DNA whose (nucleotide) sequence is copied into an RNA during the process of transcription, typically a messenger RNA (mRNA) molecule which is subsequently used to synthesize a protein. During translation, each triplet of nucleotides, i.e., each codon, corresponds to a specific amino acid. There are 64 possible codons (4³: 64), which can combine in different ways to create different amino acid combinations, and thus they are responsible for the generation of a huge amount of proteins coded by a given genome.
PLEASE HELP!.............
Answer:
Insect larvae and shrews
What do you think medical professionals should do to prepare for when antibiotics don’t work any more?
Answer:
medical professionals should prepare for a backup plan i.e they should Always have other antibiotics in store
what is a sifaka and how are they an endangered species
Answer:
A sifaka is a lemur of the genus Propithecus from the family Indriidae within the order Primates.Habitat loss and poaching are probably the major factors that contribute to this species decline.
Explanation:
Hope this helped Mark BRAINLEST!!!
Fertilization occurs when:
the male gamete fertilizes the female gamete
the female gamete fertilizes the male gamete
Answer:
The first one
Explanation:
Hope this helps!
Answer:
first one :D
Explanation:
Which of the following statements about diffusion is not true?
a. Diffusion is a natural process.
b. Molecules flow down their concentration gradient.
c. Molecules cannot move at equilibrium.
d. All of the above statements are true.
The parts of the female reproductive tract normally include to ovaries to uterine tubes a single pair shaped uterus and a single vagina. Gamete production is the responsibility of the ovaries whereas protection and nourishment of growing embryo and fetus before birth and functions of the uterus the two Tubes known as fallopian tubes one from each ovary provide pathways for the female gamete (eggs) to get from the ovaries to the uterus.
Referred to the figure provided identify the structure where fertilization occurs.
#2
#4
#3
#1
Answer:#1
Explanation:
What is the name of the type of reaction that occurs when two substances join to form a single product?
Answer:
Synthesis reaction
Explanation:
hope this helps
Answer:
synthesis reactionExplanation:
A synthesis reaction occurs when two or more reactants combine to form a single product.
How would I describe the movement of molecules, if I drop food coloring into a glass of water?
Which organelle is considered the control center of the cell or the "brain" of the cell? It contains all the DNA or the instructions to carry out the function of the cell??
Answer:
The nucleus
Explanation:
The nucleus of eukaryotic cells is the "control center". It contains DNA which tells the cell how to function.
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Fossils of the Dorudon, an aquatic mammal that lived over 40 million years ago, show a whale-like animal that had small underdeveloped hind limbs.
Which best explains how fossils like the Dorudon support the theory that plant and animal life has evolved over time? (SC 7.L.15.2
They confirm that many animals have not evolved
O They confirm that many animals have not evolved
ооо
They prove that all animals evolved from a single ancestor
They demonstrate that animals that don't evolve will die out
Answer:
??
Explanation:
What is the answer cuz i am doing to test rn
Answer:
they prove that animals evloved from a sinle anncestor
PLS VOTE BRAINLIEST
The diagram below represents the circulation of air above Earth's surface at a coastal location during the day and at night.
This local air movement is best described as an example of
1.
conduction between Earth's surface and the atmosphere above it
2.
condensation of water vapor during the day, and evaporation of water during the night
3.
convection resulting from temperature and pressure differences above land and water
4.
greater radiation from the warmer ocean during the day and from the warmer land at night
Submit Answer
Answer:
3. convection resulting from temperature and pressure differences above land and water
Explanation:
Due to the the difference between the ability of land and to water to absorb and radiate heat energy, the land gets heated up by the sun more quickly than water during the hot afternoons. As a result, the air above the land surface gets heated up more quickly than that above water. Warm air being less dense than cold air will rise above to atmosphere creating a low pressure area on land. On the other hand, air above water is not heated up as quickly, thus the dense cooler air over water will rush in and replace the warm air that has risen above the land surface.
At night, the land cools off more easily than water, hence the air above the land surface is cooler. On the other, water does not lose heat as quickly as the land, hence the air above the water surface is warmer than that over land. Warm air over the water surface will rise above, while colder air from land will replace it.
The data showed that recently the alligator population has decreased. How could the decrease in the alligator
population affect the other populations? Be sure to explain whether the gar population, the diving duck population, and
the crab population will change, and why.
Answer:
the gar population will increase, the diving duck will decrease slightly and the crab population will decrease
Explanation:
Since the alligator population will decrease, the gar population won't have anything to limit their population, so they will increase fast. The crab population will decrease fast as there are more gars to eat them. The duck population will decrease slightly as the gar is eating more crabs then the duck
Which population will likely decrease in size in the near future?
Question
If a population's growth rate decreases as the population size approaches
carrying capacity, the population's growth follows a(n) ______ model.
exponential growth
density-dependent growth
geometric growth
logistic growth
2 of 20
Determine the density of a rabbit population, you would need to know the population count of the rabbits and ________.
the density-dependent limiting factors for that population.
their carrying capacity.
population distribution pattern.
the size of the habitat that the population lives in.
3 of 20
What has helped human populations to increase their carrying capacity in their environments?
agriculture
the ability to build shelters
improved food distribution systems
all of the above
4 of 20
Lichens are one of the first pioneer species on a newly formed volcanic island in the Pacific Ocean. This is an example of ________.
competitive exclusion.
a keystone species.
primary succession.
an endemic species.
5 of 20
May develop in response to predation?
Mimicry.
Cryptic coloration.
Warning coloration.
All of the above.
6 of 20
A(n) _______tends to have a greater impact on community structure than their abundance in the community might suggest.
invasive species
keystone species
endemic species
exotic species
7 of 20
Opportunistic species typically_________.
are large bodied.
follow a type II survivorship curve.
experience little intraspecific competition for resources.
reach sexual maturity slowly.
8 of 20
The best example of secondary succession?
A retreating glacier leaves behind bare rock, which is then colonized by lichens.
A lake steadily becomes shallower and more nutrient-rich over time.
A 100-year flood recently occurred.
After plowing a field, the farmer decided to rest the field for the next season. Over the next few weeks, native grasses and wild flowers began growing in the field. Within a couple of months, small shrubs became established.
9 of 20
Competition among individuals of different species is _______ competition.
extraspecific
intraspecific
interspecific
exospecific
10 of 20
On average, the ecological footprint of an American will be ________the ecological footprint of someone from a developing nation.
larger than
smaller than
about the same as
not comparable to
11 of 20
Is the intentional release of a natural enemy to attack a pest population?
Biological control
Coevolution
Sustainable resource management
Integrated pest management
12 of 20
A species whose members produce only a few offspring and exhibits a high level of parental care _______.
is opportunistic.
will follow a type I survivorship curve.
will be uniformly distributed.
will follow a type III survivorship curve.
13 of 20
In the presence of limiting factors, what shape does a population's growth curve most closely resemble?
S
J
U
∩
14 of 20
Mutualism has ________on one organism, and ________on the other organism.
a positive impact; no impact
a positive impact; negative impact
a negative impact; negative impact
a positive impact; positive impact
15 of 20
Most likely to have density-dependent effects on population growth?
temperature
breeding site availability
fires
floods
16 of 20
Developing nations tend to have higher ______than more highly developed nations.
ecological footprints
life expectancies
ecological services
fertility rates
17 of 20
Level of ecology studies interactions between populations of different species?
Community
Organismal
Population
Ecosystem
18 of 20
A broad-based, pyramid-shaped age structure diagram for a human nation indicates that nation should consider ________.
planning additional retirement services for an aging population.
investing more significantly in childcare and youth education.
importing additional young workers to continue to generate adequate tax revenues.
encouraging people to have more children.
19 of 20
Random plot sampling is used to estimate ______, and the estimate will be the most accurate when the population is _______distributed.
population size; randomly
population density; randomly
population size; uniformly
population density; uniformly
20 of 20
Might be studied by an ecosystem ecologist?
competitive exclusion between two species of fruit flies
how the intensity of light impacts the distribution of algae in a stream
the use of mark-recapture to estimate the number of elk in the Kaibab National Forest of Arizona.
predator-prey interactions between the lynx and snow shoes hares
Answer:
It looks like Italy could be the closest
Explanation:
omg is that GOOOOOOOOOOOON lol sorry-
Especially considering it would have to be based off the how many children are alive because theyll be the future. And Italy is thinner than the U.S and Kenya.
Or I could be reading this incorrectly-
What step in photosynthesis may occur during day and night? A.Light independant reactions B.Light dependant reactions c. Photolysis
Answer:
a is the answer
Explanation:
Light independent reactions of photosynthesis may occur during day and night.
STAGES OF PHOTOSYNTHESIS:
Photosynthesis is a metabolic reaction undergone by green plants to obtain their food using energy from sunlight. Photosynthesis is a process that involves two major stages: light independent reactions and light reactions. Light dependent reactions occur strictly under light conditions because light is needed to break down water molecules in a process called photolysis. In the light dependent reactions, water is broken down by light to give oxygen gas. In the light independent reactions, carbon dioxide is required.However, light independent reactions may occur during day and night. This is because light independent reactions does not require light to occur.
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Pl help it’s for a grade
Answer:
A
Explanation:
A
Answer:
i think a
Explanation:
sorry if wrong
Describe the importance of a hypothesis in scientific inquiry.
Answer:
the basic idea of a hypothesis is that there is no pre-determined outcome. ... A key function in this step in the scientific method is deriving predictions from the hypotheses about the results of future experiments, and then performing those experiments to see whether they support the predictions.
Explanation:
Using this information and rge geologic time scale above, choose the period in which fishes with jaws first appeared.
A. Jurassic
B. Silurian
C. Quaternary
D. Cretaceous
location, structure, function of xylem tissue
Answer:
The xylem is located in the root, stem and the leaves of a plant.
The xylem contains dead cells arranged end-to-end forming continuous vessels. They have a hollow central space (lumen) through which water passes. They walls contain lignin.
The xylem carries water and minerals, up from the roots to the rest of the plant.
Crossing-over and nondisjunction take place during the process of
1.mitosis
2.meiosis
3.internal fertilization
4.binary fission
Someone help please and thank you
Answer:
2.meiosis............
The stars appear to move across the sky every day, but
their paths change throughout the year. Here is a model of
the Sun-Earth system.
Based on the model, which three factors might cause this change in the
apparent movements of the stars?
Answer:
Earth's Revolution around the sun, The tilt of Earth's Axis, and Earth's rotation on its axis.
Explanation:
I have done this test
1. The Earth's revolution around the Sun: As the Earth revolves around the Sun, the stars appear to move across the sky each day. This is because the Earth is rotating on its axis, which causes the stars to appear to be moving from east to west.
2. The Earth's tilt: The tilt of the Earth's axis also has an effect on the apparent movement of the stars. As the Earth rotates around the Sun, the tilt of the Earth's axis changes throughout the year. This causes the stars to appear to move slightly differently at different times of the year.
3. The Precession of the Equinoxes: The precession of the equinoxes is the gradual wobble of the Earth's axis which takes place over thousands of years. This has an effect on the apparent movement of the stars, as the angle of the Earth's axis changes over time. This causes the stars to appear to move in a slightly different pattern than they did thousands of years ago.
Learn more about Earth Rotation here:
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Between a phylum, kingdom, order and family, which would be the MOST
Canspecific level of classification?
A.Family
B.Phylum
C.Kingdom
D.Order
Answer: phylum i hope i speled that right
Explanation: The most general category in taxonomic classification is domain, ... by subsequent categories that include phylum, class, order, family, ... The kingdom Animalia stems from the Eukarya domain.
Humans decide which varations are favorable or desired.
A. Artificial Aelection
B. natural selection
C. both
Answer:
Artificial selection
Explanation:
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.
Complete the following sentence.
A farmer’s profit is determined by the amount by which the sale value of the ___ ___ exceeds the cost of production and distribution.
Answer:
profits farmers
Explanation:
Answer:
Crop yield
Explanation:
what atom is similar to H
What are 3 organisms that are found in the same phylum as euglena gracilis?
Euglena is a large genus of unicellular protists: they have both plant and animal characteristics. All live in water, and move by means of a flagellum. This is an animal characteristic. Most have chloroplasts, which are characteristic of algae and plants
Explain why reptiles and birds are placed in the same clade.
Answer:
because they both have jaws, lungs, and claws or nails and they include some of the same common ancestors.
Explanation:
Which one is the true answer
A car advertised states that it can accelerate from rest to 70 m/s in 7 seconds. What is its acceleration?
Answer:
10[tex]m/s^{2}[/tex]
Explanation:
Formula to find acceleration is :
Acceleration = [tex]\frac{ChangeInVelocity}{TIme}[/tex]
OR
Acceleration = [tex]\frac{Final velocity-Initial velocity}{Time}[/tex]
= [tex]\frac{70 - 0}{7}[/tex]
= [tex]\frac{70}{7}[/tex]
= 10[tex]m/s^{2}[/tex]