Answer:
In the case of the algae, each individual cell is responsible for absorbing its own water. This makes the algae nonvascular compared to the highly vascular plant species. In this connection, algae also lack several key structures that are normally present in ordinary plants like the leaves, roots and stem.
Algae are a group of aquatic organisms with autotrophic metabolism that are made up of eukaryotic cells and we can find unicellular or multicellular individuals.
Some characteristics of algae cells are:
• Cellular organization is eukaryotic (with the exception of blue-green algae), that is, they have a nucleus delimited by a double membrane, mitochondria, chloroplasts, endoplasmic reticulum, Golgi complex and lysosomes.
By definition, this type of cell is one that has a nucleus in which genetic material is stored. Compared to prokaryotic cells, eukaryotes have a large genome.
• The cell wall is made up mainly of cellulose and glycoproteins.
• In the algae cells we can find different reserve substances produced by metabolism.
The reserve substances are mainly starch, although we also find chrysolaminarin, laminarin, mannitol and paramilion in the different groups.
These substances form granules that are dispersed in the cell cytoplasm, in chloroplasts or in pyrenoids.
• They have structures of locomotion called flagella.
In different groups of algae, these organs vary in both number and shape, however, they typically present two flagella or multiples of two.
Therefore, we can conclude that algae are unicellular or multicellular photosynthetic organisms endowed with nucleus, cell wall, flagella and reserve substances.
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. An astronaut weighs 120 Newton’s on the moon, where the strength of gravity is 1.6 N/Kg. What is her
mass in Kg?
Answer:
75 kg
Explanation:
answer is above
please answer this for me (8)
Answer:
A
Explanation:
Are ecosystems at the edge of forests more likely to stay healthy, or ecosystems in the interior of forests? Explain your choice.
Answer:
Interior because it is harder for humans to get machinery inside to chop down trees or harvest natural resources. They must start destroying from the edge inwards.
Explanation:
Answer:
The ecosystem in the interior of forests stay healthy.
Explanation:
Ecosystem at the edge of the forests are exposed to many things that can affect it and ecosystem in the forests are untouchable and are exposed to things that naturally occurring.
similarities between seemingly unrelated organisms can be explained by Darwin's theory that organisms come from common ancestors true or false
Answer:
false
Explanation:
Answer:
Actually, this is true
Explanation
I just took the test on edu
2. How long would it take for a car to travel a distance of 275 km if it is traveling at a velocity of 55
km/hr?
Answer:
5 hours
Explanation:
275 divided by 55 = 5
2. Which particle's mass is similar to a proton's mass? ( A. an atom B. a nucleus C. a neutron D. an electron
Answer:-
Option C. a neutron
In 2019, what was the total income for all agriculture commodities?
Answer: Cash receipts for all commodities are forecast to decrease $12.3 billion (3.3 percent) to $358.3 billion (in nominal terms) in 2020. Total animal/ ...
Explanation:
please help (5 stars nocap)3
Answer:
C) Chloroplasts
Explanation:
Chloroplasts are the organelle of photosynthesis. They capture light energy from the sun and use it with water and carbon dioxide to make food (sugar) for the plant.
Hope this helps :)
Answer:
c
Explanation:
There are various types of plant cells which include: parenchyma cells, sclerenchyma cells, collenchyma cells, xylem cells, and phloem cells. Parenchyma cells are the major cells of plants.
hope it helps
Which of the following characteristics of Figure 1 best shows that the fragment is RNA and not DNA?
A
The 5' to 3' orientation of the nucleotide chain
B
The identity of each nitrogenous base
С
The charges on the phosphate groups
D
The type of bond linking the nucleotides together
Answer: I’m pretty sure it’s B
Explanation:
there is a uracil nitrogenous base in it and only rna has uracil whereas dna has thymine
Water molecules are able to attach to
other substances, particularly if they are
also polar.
Answer:
Water molecules form hydrogen bonds with each other and are strongly polar. This polarity allows it to dissociate icons in salts and bonds to each other polar substances such as alcohols and acids thus dissolving them.
2. Cell division by mitosis produces:
A. Two cells identical to each other but not to the parent cell
B. Two cells identical to each other and to the parent cell
C. Two cells with half the amount of DNA as the parent cell
D. Two cells with twice the amount of DNA as the parent cell
Please hurry !!
Answer:
D
Explanation:
I think that is tha Fact
How is IGCSE CEntre?
Answer:
so good place
Explanation:
Answer:
yepp it is a good place !!
Fill in the blank.
Most earthquakes take place along tectonic plate _____________.
Answer:
Most earthquakes take place along tectonic plate edges and along faults.
Assignment: 03.01 Seasons of Change
Answer:
What's the question? There's no specific question there
A large bar of solid gold is melted into liquid. The liquid is then poured into
molds to make a number of gold coins. Was this a chemical or physical
change? Explain.
Chemical, because the gold turned into something new and is no longer gold.
Physical, because the gold changed size and shape, but is still gold.
Answer:
It is physical, the gold is still gold and there has not been any chemical change. Melting, boiling, freezing, etc. are physical changes.
Two heterozygous tail pea plants with the same genotype, Tt, are crossed. What is the probability that the offspring of this cross will have a heterozygous genotype?
A. 50%
B. 25%
C. 100%
D. 75%
Need help quiz is here and this is the only answer I don’t know
Answer:
activation energy is the answer
Can anyone help please
Answer:
Although secreted by the pancreas, glucagon directly impacts the liver as it works to control blood sugar levels. Specifically, glucagon prevents blood glucose levels from dropping to a dangerous point by stimulating the conversion of stored glycogen to glucose in the liver.
Explanation:
:) (i'm not supposed to tell you the answer but i can help you)
plzzzzzzzzzzzz helpppppppppppppp
Answer: No it takes a long time to form a fossil. Fossils don’t form within a few weeks. It probably took at least a decade for the dinosaur fossils to form, maybe even a century.
Explanation:
Why is salt water dangerous to someone who has been a long time without food or water?
Well salt water can make a person become more thirsty and cause their kidney to be unable to get rid of the salt that comes from seawater. The body can normally gets rid of the excess salt by having the kidneys produce urine, but it needs freshwater to dilute the salt in your body for the kidneys to work properly.
Choose the most appropriate name for the function described below The height reached by the rocket depends on the amount of fuel
A.Height(fuel),or H{f}
B.Fuel{height},or F[h
C.Fuel{rocket) or F{r}
D.Height{rocket}or H[r}
B. Fuel{height},or F[h
If you are on the top a mountain and drop an apple, it
will fall to the ground, even though the apple is
gravitationally attracted to you. Why?
a)Earth is larger and has a much stronger
gravitational pull
b) Apples always fall down
C) Centrifugal forces pull the apple to the Earth
and that is stronger than your gravitational pull
d) None of these
Describe at least 3 areas of carbon storage in the carbon cycle and how the carbon moves between these sinks
2 dogs reproduce, 2 sex cells join together & form offspring. The resulting offspring is likely/
) A. Identical to parents
B. Both have traits from each parent.
C. to express only recessive traits
Answer:
B
They have traits of both parents some of which could be dominant.
The resulting offspring will have traits from each parent. The correct option is B.
What is genetic variation?The difference in DNA between individuals or between populations is referred to as genetic variation.
Mutation and genetic recombination are two of the many sources of genetic variation. Although mutations are the ultimate source of genetic variation, other mechanisms such as genetic drift also contribute to it.
Heredity, also known as inheritance or biological inheritance, is the transmission of traits from one generation to the next.
Each of your parents has two copies of each of their genes, and each parent passes on only one copy to you.
Many of your characteristics, such as hair and skin color, are determined by genes that are passed down to you.
Thus, the correct option is B.
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el nino affects the weather worldwide.
1 True
2 False
how does metabolism work?
Answer:
Explanation:
Metabolism: Converting food into energy
Metabolism is the process by which your body converts what you eat and drink into energy. During this complex biochemical process, calories in food and beverages are combined with oxygen to release the energy your body needs to function.
what is the process of transferring sea water to fresh water?
Answer:
Desalination
Explanation:
desalination is a technique where the excess salt are removed from salt water or brackish water.
please help asap i will mark brainliest
Answer:
I would say the 3rd one because itakes the most sence
Answer:c because the compound has formed through 2 gases that made up a liquid the oxygen has bigger in size and is more abundant in mass while hydrogen is smaller but more abundant in numbers
Explanation:
How do we detect the cosmic microwave background radiation?
A. by looking for a glow in the night sky
B. by looking for radiation at the blue end of the spectrum
C. through magnifying glasses
D.through radio telescopes
Answer:
D. Through radio telescopes
Explanation:
The way we are able to detect them is by radio telescopes
9. The phases of the moon are the regular changes in how the moon looks from Earth. In which phase is the moon completely visible from Earth?
Group of answer choices
A. Full moon
B. New moon
C. Waxing gibbous
D. Waning crescent
Answer:
A, full moon
hope this helps ;)
In the full moon phase, the moon is completely visible from the Earth. Therefore, the correct option is A.
What are the phases of the moon?The phases of the moon results from the changing position of the moon relative to the Sun and the Earth.
There are 8 phases of the moon:
1.) New moon-The moon is between the sun and the earth, with its illuminated side facing away from us.
2.) Waxing crescent-The moon is partially illuminated increasing in size, appearing as a crescent shape.
3.) First quarter-The moon is 90 degree east of the sun and appears as a half moon shape.
4.) Waxing Gibbous-The moon appears as gibbous shape.
5.) Full moon-The moon is on the opposite side of the earth from the sun, and its entire illuminated side is visible.
6.) Waning gibbous-The moon is partially illuminated and decreasing, appearing as a gibbous shape.
7.) Third quarter-The moon is 90 degree west of the sun and appears as a half moon shape.
8.) Waning crescent-The moon is partially illuminated and decreasing, appearing as a crescent shape.
The cycle of phases repeats approximately every 29.5 days, from new moon to new moon. Therefore, the correct option is A.
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