Answer:
The function of the pollen tube is to lead sperm cells into the ovary.
Explanation:
In angiosperms, the pollen tube is a structure formed when the pollen grain comes into contact with the stigma and germinates, producing a tubal extension that is related to the embryonic sac where the female gametophyte is found.
The function of the pollen tube is to conduct the male gametophyte —which is found in the pollen— to the embryonic sac, in order to come into contact with the oosphere and produce fertilization.
The other options are not correct because the pollen tube:
Do not create more pollen. Do not create more male spermatophytes. Does not lead the eggs to the male spermatophytes.Answer: to lead sperm cells into the ovary .
Explanation: There needs to be a way for the sperm cells formed by the pollen's generative nucleus to reach the egg cells that are found in the ovary.
Name the organelle or organelles that perform each of the following functions.
Answer:
A. Chloroplasts B. The cell wall and the vacuole C. Vacuoles D. The mitochondrion
Explanation:
3. Fill in: Name the organelle or organelles that perform each of the following functions. A. _____________________ convert sunlight to chemical energy. B. The _____________________ and the _____________________ help to support the plant cell and help it to maintain its shape. C. _____________________ store food or pigments. D. The _____________________ converts food into energy. It is found in both plant cells and animal cells.chloroplast, cell wall, cell membrane, vacuole, mitochondria
Chlorophyll, cell wall and vacuole, chloroplasts, and mitochondria are used to fill in the blanks.
What are cell organelles?An organelle is a subcellular structure that, like an organ, has one or more specific jobs to do in the cell.
The organisms that comprise the pigment chlorophyll convert the energy from light into chemical energy that can be stored in the form of sugars through the process of photosynthesis.
The cell wall and vacuoles found in plant cells aid in the preservation of shape and integrity.
Chloroplasts are plant organelles that work to store pigments and food. It stores pigment, specifically chlorophyll, which converts light energy into chemical energy.
The mitochondria convert food into usable energy through the process of cellular respiration. The mitochondria, which are found in all plants and animals, are thought to be converters.
Thus, these are the answers for the blanks.
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Your question seems incomplete, the missing part is:
Stagnant, shallow areas of water-saturated soil, where the rate of photosynthesis is low, are best characterized as:______.
Answer:
The correct answer is - bogs.
Explanation:
Bogs or boglands is a wetland that is made up of dead organic matter such as dead plants or parts of the plants like mosses, majority time it is a thick carpet of sphagnum moss. All these form spongy peat which is stagnant.
Most of the water present in this wetland comes from rainfall instead of runoff or streams from the groundwater which makes it a wetland with a shallow area of water-saturated soil. This wetland is known for its less photosynthesis.
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what kind of angle is this?
5.Which is the first step in photosynthesis?_____.
a.the production of ATP
b.the absorption of light
c.the production of NADPH
d.None of the above
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b. The absorption of light.
What is the chemical reaction that lactase catalyzes?
Answer:
galactose and glucose
Explanation:
Lactase catalyzes the hydrolysis of the glycosidic bond in the disaccharide lactose, releasing galactose and glucose hope this worked :)
The chemical reaction that is catalyzed by the enzyme lactase is the breakdown of lactose into glucose and galactose. The reaction is as follows:
Lactose → Glucose + Galactose. (in the presence of Lactase). What is a Chemical reaction?A chemical reaction may be defined as a process through which one or more substances known as the reactants are significantly transformed into one or more different substances known as the products in the presence of enzymes of energy.
Lactose is a type of disaccharide which dissociates into glucose and galactose. It is similar to maltose which in presence of an enzyme maltase gives two different compounds of glucose and sucrose in presence of an enzyme sucrase converts into glucose and fructose.
Therefore, the chemical reaction that is catalyzed by the enzyme lactase is the breakdown of lactose into glucose and galactose.
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Explain the difference between the calorie (lowercase C) and the Calorie (Capital C)?
Broken down molecules considered waste to the cell would be easily removed out of the cell by ?????
please help
Answer:
The waste would be digested by the lysosomes and transported out of the cell by probably diffusion but from what I know, they would be recycled.
Explanation:
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which of the following would likely NOT increase a reaction rate of an enzyme in your mouth that was not yet at optimal conditions?
1)slight increase in temperature
2) neutral ph
3) more enzyme
4) more substrate
5) extremely high temperature
Which class contains colonial polyps that are spcialized for different jobs?
O Hydrozoa
O Scyphozoa
O Cubozoa
O Anthozoa
Answer:
a
Explanation:
Answer:
I Think its Hydrozoa not 100% sure
Please please help!!!!
If the sequence on a mRNA strand was UCACA, the complementary strand of DNA would be:
TGUGU
AGTGT
GACAC
AGUGU
Answer:
TGUGU
Explanation:
Fill in the blanks with the available words:
All organisms _____ (with its unique elemental composition), and all are _____ related to one another. Species _____ might defer more than others, though. We might also predict that the more similar the percentages of _____ elements are in two species, the _____ closely related those two species are.
WORDS
•evolved on earth
•less
•more
•living under unusual conditions
•trace
•genetically
•naturally occurring
•essential
•evolved on earth
Answer:
all organism evolved on earth, and all are genetically related to one another. Species living under unusual conditions might defer more than others, though. We might also predict that the more similar the percentages of naturally occurring elements are in two species, the more closely related those two species are.
Explanation:
this is what i am assuming the answer could be :)
Ben measures the hight of two bottles one is 12 cm and one is 15 cm. What is the difference of the hight in millimeters
Answer:
The answer is 30 millimeters.
Explanation:
For every 1 centimeter, it is 10 millimeter. So for 12 cm, its 120 millimeters. 15 cm, its 150 millimeters. 150 mm - 120 mm = 30 mm.
please help me with this question:)
Answer:
Energy
Explanation:
Active transport requires energy to move substances across a plasma membrane, often because the substances are moving from an area of lower concentration to an area of higher concentration or because of their large size. Two types of active transport are the sodium-potassium pump and vesicle transport.
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A group of students wanted to know if millipedes prefer moist or dry environments. They suspected that millipedes would prefer moist environments because they had observed that millipedes are usually found under decaying logs.
Answer:
The suspicion of the students are very correct. Millipedes prefer damp environments. They need water moisture to survive.
Explanation:
Millipedes are known as arthropods. An Arthropod is an animal without a spinal vertebra, which possesses a segmented body, paired jointed appendages, and an exoskeleton.
They are found to be very ardent and quicker at recycling natural waste than animals and plants.
Without adequate moisture, Millipedes can die within 48 hours.
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Which two of Earth's spheres interact when mountain glaciers melt due to hot lava released by a volcano? (5 points)
Cryosphere and geosphere
Cryosphere and hydrosphere
Geosphere and biosphere
Hydrosphere and biosphere
Answer:
Geosphere and Biosphere
nerve pathway from finger to brain
Answer:
The nerves of the arm and hand perform a substantial two-fold role: commanding the intricate movements of the arms all the way down to the dexterous fingers, while also receiving the vast sensory information supplied by the sensory nerves of the hands and fingers. The movements of the arms must be fast, precise, and strong to complete the diverse activities the body engages in throughout the day.
Explanation:
Answer:
Receptors, spinal cord, nerves, thalamus, sensory cortex
Explanation:
When you touch an object the Touch receptors receive the stimulation. The impulse from this travels to the Spinal Cord through the sensory nerves. Those nerves come into contact with others, sending it to the thalamus and sensory cortex.
Which of the following crops feeds the most people on earth?
corn, wheat rice, soy.
onions, peppers, mushrooms.
lettuce, tomatoes, cucumbers.
green beans.
Answer:
wheat rice
Explanation:
your welcome
Five
ways of fuel and
energy Conservation
Answer:
Explanation:
Turn off the fan when you leave a room.
Close your drapes or drop your window shades during the day.
Wash your clothes in cold water.
Wrap or cover foods and drinks in the refrigerator.
Always use the cold water faucet, unless you really want hot water.
How are aquifers connected to the water cycle?
Answer:
At a certain depth below the land surface, the spaces between the soil and rock particles can be totally filled with water, resulting in an aquifer from which groundwater can be pumped and used by people. Some of the precipitation that falls onto the land infiltrates into the ground to become groundwater.
Explanation:
is what i found on google.
hope this helps!
Increasing
carbon dioxide
concentration
increases the
rate of
photosynthesis
as carbon
dioxide (CO2) is
a
in
photosynthesis.
Above a certain
concentration,
further
increases in
concentration
do not increase
the rate of
photosynthesis
and it stops
being a limiting
factor.
Answer:
Increasing carbon dioxide concentration increases the rate of photosynthesis as carbon dioxide (CO2) is a limiting factor.
Explanation:
Some limiting factors like carbon dioxide, temperature etc. influence the photosynthetic rate, which may end up reducing the potential amount of carbohydrate produced by photosynthesis. Carbon dioxide is important for this form of biosynthesis: it provides the inorganic carbon that is integrated into carbohydrate molecules.
The photosynthetic rate can be slowed by a decline in the concentration of available carbon dioxide.
6 CO2 + 6 H2O + light → C6H12O6 + 6 O2
Carbon Dioxide + Water + Light Glucose + Oxygen
what is biodiversity?
Answer:
Biodiversity is the variety of life. Most people recognize biodiversity by species a group of individual living organisms that can interbreed. Examples of species include blue whales, white tailed deer, white pine trees, sunflowers, and microscopic bacteria that can't even be seen by the naked eye.
Explanation:
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Wetland protection is one of the most controversial provisions of the ___________ because opponents believe that the legislation is _____________.A) Endangered Species Act; an infringement on their use of private property.
B) Clean Water Act; ineffective because it does not prevent pollutants.
C) Land Use Act; an infringement on their use of private property.
D) Clean Air Act; ineffective because it does not prevent pollutants.
E) Clean Water Act; an infringement on their use of private property.
Answer:
The correct answer is - option E. Clean Water Act; an infringement on their use of private property.
Explanation:
Section 404 of the clean water act has the regulation or provision for wetland protection which has the primary aim to protect and preserve the area near the water such as swamp, bogs, and wetlands.
This is the most controversial provision of the CLean water act as most of the wetlands area on private property or private land which does not allow to use their private property according to the will and which is considered as an infringement on their use on private property.
which word means that an organism's cells specialize and change during their lifetimes?
answers choices: grow, evovle, shrink, develop
What three things do plants need to do photosynthesis?
Explanation:
Carbon dioxide light and nutrients
what kind of molecule is ATP synthase? Protein, lipid, nucleic acid, or carbohydrate
Answer:
protien
Explanation:
Effects of Environmental Factors on Phenotype: examples of physical and social factors
Answer:
Explanation:
environmental factors that effects the phenotype of individual include radiation drugs and pollution because these factors cause mutation in genes which ultimately effect phenotype along with genotype
social factors are thing that effect someone's lifestyle it include wealth religion buying habits education level which effect phenotype
How has Earth changed during our current era?
A. Dinosaurs became the dominant life form on Earth.
B. Dense forests developed.
C. The oceans formed from water vapor in the atmosphere.
D. Earth cooled enough to form solid rock.
ANSWER
THESE ARE SOME DIFFERENT ANSWERS
1. the climate has cooled and has became less humid
2. Grass started growing across the world.
3. the dense forest has developed
Explanation:
Dense forests started to develop during our current era is how the earth has shown changes.
What is Forest?This is defined as the area of land which is dominated by trees and serves as inhabitants for some organisms in the ecosystem.
With time, the earth changed by the forests becoming denser when compared to previous eras.
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if you flip a coin 100 times, how many times would you expect to get heads?
Answer:
Well, you expect to get heads 50 times and tails 50 times
Explanation:
1/2 of the coin is heads and 1/2 of the coin is tails
You can expect to get both heads and tails 50 times each
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Which statement correctly describes the effect of abiotic factors on population density?
A. A change in abiotic factors always decreases the size of a population.
B. A change in abiotic factors always increases the size of a population.
C. A change in abiotic factors never impacts the size of a population.
D. A change in abiotic factors may increase or decrease the size of a population.
Answer:
option A is correct
Explanation: