Answer:
a. The gastrodermis contains various cell types and develops from the endoderm during development.
d. The epidermis is associated with sensing the environment and prey capture.
Explanation:
Most cnidarians have two layers of cells organized into some luck of tissues that have specific functions.
Cnidarians' body organization is simple: It is a hollow structure composed of two cellular layers: epidermis, which is the external layer, and gastrodermis that is the internal layer, formed by lining cells in the gastrovascular cavity. Between these two layers, place the mesoglea that varies from a thin non-cellular membrane to a mucous, fibrous, thick membrane with amebocytes.
Epidermis and gastrodermis originate from two embryonic tissues, the ectoderm, and the endoderm, respectively.
The epidermis has five types of cells with different functions: epitheliomuscular, interstitial, cnidoblasts, secretors, and sensorial.
Gastrodermis is composed of cells such as nutritive cells, glandular enzymatic cells, secretory cells, and sensory cells.
11. Liquid methane has a heat of vaporization of 122 calories per gram (cal/g). Compare the
effectiveness of liquid methane and water for evaporative cooling.
Answer:
Water is more effective for evaporative cooling than liquid methane since, it would result in a higher temperature drop for the same mass of liquid methane.
Explanation:
Since the heat of vaporization of water is 540 calories per gram and that of liquid methane is 122 calories per gram, for each gram of the water evaporated, 540 calories is lost while for each gram of liquid methane evaporated, 122 calories is lost.
Since a higher heat loss would result in a higher temperature drop, water is more effective for evaporative cooling than liquid methane since, it would result in a higher temperature drop for the same mass of liquid methane.
which lymphoid organs atrophies with age???????
a)Peyer patches
b)Thymus
c)Bone marrow
d)Spleen
answer plz (╯︵╰,)
2. Why is the cell cycle important?
A. O it enables organisms to grow, develop, and maintain healthy cell tissue
B. O it causes fertilization of eggs, enabling sexual reproduction
C. O it regulates the use of nutrients and energy by organisms
D. O it determines the fate of undifferentiated stem cells in organisms
Explanation:
The cell cycle is the replication and reproduction of cells, whether in eukaryotes or prokaryotes. It is important to organisms in different ways, but overall it allows them to survive. ... Plants require the cell cycle to grow and provide life for every other organism on earth.
A Shut the water off except during lunch time.
B Take out all classroom faucets
C Fix the leaks in the faucets, water fountains, and toilets.
D Shut water off during the weekend while school is not in session.
Darwin and Wallace both observed greater species richness in the tropics than in Europe, but neither of them had a good explanation for why. One of the best-supported modern-day hypotheses to explain this pattern is that mutation rates are higher in the tropics than in temperate latitudes. Why would higher mutation rates lead to greater species richness
Answer:
Mutation shows the species energy relationships, tropics are more rich with energy as compared to the temperate europe.
Explanation:
The rate of species evolution is defined by the type of environment or the natural surroundings it lives in. Mutations Can affect organisms by making changes in their physical characteristics. Such can impact their DNA code and may even lead to death in many. The richness of species in the tropics is due to the more warmer and humid climates. They are suited to the development and germination of certain bacterias and have certain climatic phenomena.Which of the following shows the correct ratio of carbon, hydrogen, and oxygen in a carbohydrate?
A. C6H1206
B. C4H80,
C. C7H2005
D. C5H20010
Answer:
A. C6H12O6
please follow meAnswer:
The answer is A.
Its C6H1206
Explanation:
19. The causes the water to bulge on either side of earth, resulting in high and low tides.
A. gravity
B. ocean circulation
C. Keppler Effect
D. Mars
the answer is B. also known as ocean circulation
Enzymes and pH
2. What is the pH scale?
Which statement is true based on the data in the table?
A. The United States uses more land to grow crops than to maintain forests
B. The United States uses more land for parks and wildlife than for forests
C. The United States uses more land for parks and forests than for urban areas.
D. The United States uses more land for urban areas than for grasslands and ranges
Answer:
C. The United States uses more land for parks and forests than for urban areas.
Explanation:
According to the given data, the size of land used for parks and forests in United States is 313 million acres. The land used for urban areas is 61 million acres. This data here presents a comparative detail of the size of land and the purpose it is used for.
The maximum land used by United States is for forest area and grass range. This depicts that more stress is levied on keeping the land green.
Answer:
C.
Explanation:
Person above is right.
does anyone know how to do this?
What is dialog?
A. A special kind of log only found in Scandinavian forests
B. all the words in a story
C. The words characters say
D. the characters in the story
Answer:is b why because take part in a conversation or discussion to resolve a problem.
Explanation:
Which best describes a method of obtaining energy that may cause changes in
water temperature and harm to fish populations?
A burning coal
B using ethanol in cars
C installing solar panels on a home
D generating electricity in a hydroelectric power plant
Group of answer choices
Answer:
D. generating electricity in a hydroelectric power plant.
Explanation:
Renewable energy is also known as clean energy and it can be defined as a type of energy that are generated through natural sources or technology-based processes that are replenished constantly. Some examples of these natural sources are water (hydropower), wind (wind energy), sun (solar power), geothermal, biomass, waves etc.
Basically, a renewable energy source is sustainable and as such can not be exhausted.
Generating electricity in a hydroelectric power plant best describes a method of obtaining energy which may cause changes in water temperature and harm to fish populations. This is due to the operation of powerful electric steam turbines operating at high voltage.
Name three types of gene mutations
Select the correct answer.
Who do we consider to be the founder of genetics?
Answer:
C: Gregor Mandel
DNA and Biochemistry examples
Explain why the kidneys are important to our survival.
They filter waste from the blood.
They remove urine from the body.
They increase sugar levels in the blood.
They make new blood for the body.
Answer:
I belive it is A
Explanation:
they filter the waste which is then turned in to urine in the bladder
Answer:
A (They filter waste from the blood.)
Explanation:
I got it right on my test
6. Wave and tidal power are expensive to maintain.
true
false
Answer:
true
Explanation:
Which sequence of events best describes the current theory of the origin of life on Earth?
RNA formation→DNA formation→Development of simple bacteria
Development of simple bacteria→DNA formation→RNA formation
DNA formation→RNA formation→Development of simple bacteria
Development of simple bacteria→RNA formation→DNA formation
Answer:
The correct answer is - Development of simple bacteria→RNA formation→DNA formation
Explanation:
According to the hypothesis and researchers, it seems to confirm that RNA was the first genetic or hereditary material that was present in the simple form of bacteria developed first.
RNA is the molecule responsible for the origin of life on the earth and evolved all the required processes and methods for carrying and expressing the genetic information of an organism before DNA. DNA is evolved from RNA molecules of simple bacteria.
Gravitropism ensures that the plant in the figure will
A.)grow roots into the soil.
B.)wrap tightly around a trellis.
C.)grow toward a light source.
D.)have shoots that grow toward the soil.
Suppose all the alleles on on the left and right chromosomes switched places but kept the same order. Would the organism be different? Why or Why not?
Answer:
No
Explanation:
The chromosome will stay the same organism.
The organism would be same in both homogenous and heterogenous chromosome . Therefore, switching the alleles won't change the organism if order is maintained.
What is chromosome and its type ?The thread-like chromosomes that convey the genomic information from cell to cell are formed of protein and a single DNA molecule. Chromosomes are found in the nucleus of cells in both plants and animals, including humans.
An organism is said to be homozygous if it has identical genes on both chromosomes. It is referred to as heterozygous if the organism possesses two distinct alleles of the gene.
Therefore, if the alleles switched places but the order remains same then organism will be same too in case of homologus as well as heterologus chromosome.
Learn more about Chromosomes, here:
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Describing the path of a water molecule through a convection current
Answer:
When we heat a container full of water, the water in the lower part of the container i.e. near the flame gets heated first. Warm water rises up and the cold water rushes below to take its place. This water again gets heated and rises up and the cycle continues.
The lac operon controls the transcription of a group of genes involved in metabolizing lactose in E. coli. A group of scientists tested how to activate the lac operon. In four different mediums, they varied whether glucose or lactose was present in the medium, as indicated by a or -.The scientist discovered that the lac operon is inducible, repressed by glucose and induced by allolactose. Which medium has the right conditions to metabolize lactose
Answer:
The correct answer would be - medium with lactose present and glucose absent.
Explanation:
There are genes present in lac operon that takes part in the lactose metabolism. These genes expressed only if a medium has lactose in absence of glucose.
In the absence of glucose and lactose is present, due to inducer the lac repressor is removed from the operator. This leads to the binding of CAMP to DNA as the CAMP levels are high. It helps in high transcription levels b binding RNA polymerase to promotor.
why parasitic worms do not have elaborate system
Mendel found that crossing wrinkle-seeded plants with pure round-seeded plants produced only round-seeded
plants.
Part A
Which trait is dominant?
A Round
B Wrinkled
C Peas
D Mendel
Answer:
round is the dominant triat
5 Which word should replace the question mark in the diagram? ? Water droplet Reflection А Refraction B Reflection C Light energy D Rainbow
Answer:
percipitation
Explanation:
I took this class already
Explain how meiosis results in UNIQUE cells.
Meiosis is a reduction division in which the number of chromosomes in the parent cells is halved to the daughter cells.
Meiosis is the process such as:
Meiosis occurs in the reproductive cells of humans. Meiosis transmits genetic information from parent to offspring. Meiosis is the characteristic feature of sexual reproduction. The male and female gamete fuse to give rise to a newly formed combination of the daughter cells.Meiosis results in the recombination of male and female gametes, which results in the independent assortment of the genes.
Thus, meiosis always results in new variations and creates genetic diversity.
To know more about meiosis, refer to the following link:
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Most of the oxygen in the atmosphere is made by algae. Where do most of the algae live?
coastal ocean
deep ocean
ponds
lakes
Most of the oxygen in the atmosphere is made by algae, with coastal oceans housing the majority of algae. Hence the correct option is A.
What is Algae?Algae is defined as a member of a group of primarily aquatic photosynthetic organisms of the Protista kingdom. Algae is described as floating green matter on the surface of a pond, lake, river, still water, moist soil, stones that grow on wet surfaces. Therefore, they can synthesize their own food. They are found in water or in very moist places.
Algae play many important and beneficial roles in freshwater environments producing oxygen and consuming carbon dioxide that act as the base of the aquatic food chain, removing nutrients and pollutants from the water and stabilize sediments. Most of the oxygen in the atmosphere is made by algae, with coastal oceans housing the majority of algae.
Hence the correct option is A.
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Which of the following do plants use for energy?
Answer:
phhotosyntesis
Explanation:
When completing this exercise, it may be useful to refer back to Labs 10-12 for information about living primates. In 2009, a new fossil species, called Darwinius masillae, was identified in Germany, represented by a nearly complete skeleton nicknamed Ida (depicted on p. 387 of your lab manual). It lived around 47 mya. It had a small brain, short protruding snout, large eyes, and postorbital bar. Its diet probably included a lot of fruit and leaves. It did not have a dental comb. It had nails instead of claws and was probably an arboreal quadruped. Researchers disagree about whether the fossil is more similar to living haplorhines (tarsiers, monkeys, and apes) or more similar to strepsirhines (lemurs and lorises). The skeleton is about 23 inches (58 cm) long including the tail, and has a body length of about 9 inches (24 cm) without the tail. Describe at least two features that Darwinius shares with living haplorhines.
Answer:
short protruding snoutlarge eyesIt had nails instead of clawsAbsence of dental combLong tailExplanation:
Haplorhines and Ida share the following characteristics:
- Both of them have plane nails in their fingers instead of claws. Nails are useful while eating and grooming. They might be necessary for defense too.
- They have a short snout, which is the cause of a poorly specialized olfactive perception.
- Neither of them has the dental comb characteristic of strepsirrhines.
- Eyes are big, located in the frontal area of the skull, and facing front. Vision sense is very developed. They have binocular vision, which allows them to calculate distances.
- The long tail is shared by both groups. Used during motion, to equilibrate, to hold, or grab.
Explain how cladograms shows relationships between organisms.
Answer:
A cladogram is a diagram used to represent a hypothetical relationship between groups of animals called a phylogeny. a cladogram is used by scientists studying phylogenetic systematics to visualize the groups of organisms being compared, how they related, and the most common ancestors.
Explanation:
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