Answer:
lthough rarely eaten by humans, tunicates are an important link in the food chain and thus indirectly provide humans with a source of food. Tunicates contain some unusual chemicals, and some of these may prove useful as drugs. Tunicates are considered acraniate chordates because tunicates and chordates have the following features in common: a notochord; a dorsal, hollow nerve cord; and pharyngeal gill slits at some time in their lives.
Explanation:
Describe two types of tissues and the jobs they perform.
Answer:
Muscle tissue
Nervous tissue
Explanation:
It's a specialised tissue found in animals which functions by contracting thereby applying forces to different parts of the body
Organised Cells in the nervous system which is the organ system that controls the body's movements,sends and carries to and from different parts of the body
1. There are two types of viral architectures, one is naked and the other is enveloped. Please answer the following questions. A. What are the essential structural components and their functions of a naked virus? B. What molecules can be founded on the viral envelop? Explain the sources of these molecules. C. Is naked or enveloped virus more sensitive to detergent and alcohol? Explain your reasons.
Answer:
Naked viruses do not have a phospholipid membrane.
Explanation:
Nonenveloped or naked viruses do not have a phospholipid membrane outside their capsid and remain naked to the external environment. The envelopes are consists of portions of the host cell membranes i.e. phospholipids and proteins as well as some viral glycoproteins are also present in the envelop. Enveloped virus is more sensitive to detergent and alcohol as compared to naked virus because the naked virus has resistance against environmental factors which is absent in the enveloped virus. Once the envelop removed or broken, the virus loses its functional receptors and is not able to cause infection to susceptible cells.
List and explain the 3 types of biodiversity
Answer:
genetic, species, and ecosystem
Explanation:
.
As water is cooled, its density ____ until it reaches about 4 degrees Celsius
A.) Increases
B.) Stays the same
C.) Decreases and Increases
D.) Decreases
Answer:
Its A i just did the quiz hope it helps
Explanation:
What is the answer please help no links I will report
Answer:
Limpets
Explanation:
Since the arrows represent flow of energy, and there is no path of energy from fish to limpets, limpets won't be affected at all.
I NEED HELP ASAP PLS!!
Answer: well i think its c but am not really sure
Explanation:
What is the biggest difference between the geocentric model and the heliocentric model
Answer: The main difference is that the geocentric has the Earth at the center, and the heliocentric has the sun at the center. The geocentric model says that the earth is at the center of the cosmos or universe, and the planets, the sun and the moon, and the stars circles around it. The early heliocentric models consider the sun as the center, and the planets revolve around the sun.
Explanation:
Place the labels accordingly to Biotic or Abiotic factors of this ecosystem.
(answers)
Answer:
abiotic: sea, air, rock, sun ,sea water.
biotic : shrimp , bacteria ,whelk ,
sea anemone, plankton, fish.
Explanation :
Biotic factors relate to all the living things in the ecosystem.
abiotic refers to all the non-living factors present in an ecosystem. Sunlight, water, land, all constitute the abiotic factors.
21. What macromolecule is broken down by microflora, but not humans, and helps clean out
our digestive tracts as it moves along?
A. carbohydrates
B. cellulose
C. amino acids
D. lipids
Answer:
cellulose
Explanation:
humans do not produce the enzyme necessary to break down cellulose.
Why do we add detergent to the strawberries? Group of answer choices To dissolve proteins that are found on the DNA molecule and release the DNA from those proteins. To dissolve the cell and nuclear membranes and release the DNA. To stabilize the DNA molecule so it doesn't fragment when dissolved in water. To keep the strawberries alive. To rinse off any dirt and pesticides that are on the strawberries.
Answer:
The correct answer is - To dissolve the cell and nuclear membranes and release the DNA.
Explanation:
The major function of the detergent in DNA extraction is to dissolve the cell and cellular membranes. It can increase the membrane permeability by pulling apart lipids and proteins that are components of the nuclear and cellular membrane and lyse the cell, from which we want to extract the DNA.
Detergents cause pores in the cell membranes and once these membranes are completely lysed the DNA is released from the cell. It is similar to detergents removes fat (lipids) from dishes.
Mendelian Inheritance
Two homzygous plants are crossed. One is dominant for all four traits while the other is recessive for all four traits. What are the genotypes of the parents?
the populations decrease as you go from the bottom of the food chain to top. Why do you think is so
Answer:
The reason is so there isn't an overpopulation of predators, or not enough food to sustain them. For example: there is lots of grass for rabbits to eat, comparing that to their predator like a snake, there isn't as much rabbits for them to eat.
Explanation
Star A has a surface temperature of 8000K and its thermal emission peaks around 360nm. Star B is twice as cold, with a temperature of 4000K. Its thermal emission must peak around...
Question 3 options:
90nm
180nm
360nm
725nm
1450nm
Answer:
180 hope this helps tell me if its wrong
Explanation:
the process of an organism adjusting to a change in an abiotic factor
Answer:
Acclimation/Acclimatization
scales can represent a. a range of information b. a range of resources c. proportional measurement d. all of the above
Answer:
c i think
Explanation:
Name four functions of cortisol.
Answer: Cortisol can help control blood sugar levels, regulate metabolism, help reduce inflammation, and assist with memory formulation. It has a controlling effect on salt and water balance and helps control blood pressure.
What does Marco scale mean
Answer:
A large macroscopic scale.
Explanation:
6. How might protein synthesis execute differently if a mutation occurs?
Answer:
The wrong protein can be created or the right one with abnormal function.
Explanation:
The mutated DNA is taken through the whole protein synthesis process and translated by the rRNA and tRNA to create a protein from that new sequence.
Which of these is the best example of deposition?
A
Acid rain changes the chemical composition of limestone.
B
Flowing water wears away the sharp edges of river rocks.
C
A glacier melts and drops the sediment it was carrying.
D
Water seeps into cracks in a rock, freezes and melts.
Answer:
Answer is B
flowing water wears away the Sharp edges of river rocks
When the blood glucose level decreases during a fast or between meals, the pancreas releases glucagon. Glucagon signals the liver to stop consuming glucose and to start producing glucose. Select the statements that describe how glucagon activates glucose production in the liver.
Answer:
Glucagon signals the liver to start producing glucose.
Explanation:
Glucagon signals the liver to start producing glucose from the breakdown of amino acids through gluconeogenesis process. When the glucose level decreases in the body due to fasting or starvation, the pancreas release glucagon which provides signals to the liver to produce glucose form non carbohydrates substances present in our body. This production of glucose increases the concentration of glucose in the blood and the body used this glucose for the generation of energy molecules in the form of ATP.
What causes the release of the digestive enzyme pepsin
Answer:
Impulses from the vagus nerve and the hormonal secretions of gastrin and secretin stimulate the release of pepsinogen into the stomach, where it is mixed with hydrochloric acid and rapidly converted to the active enzyme pepsin.
How does food provide energy and matter for organisms?
Answer:
Food provides the molecules that serve as fuel and building material for all organisms. Plants use the energy from light to make sugars from carbon dioxide and water. ... Organisms Explanation:
The term that refers to the physical appearance of an individual with respect to gene expression for a
particular trait is
Answer:
term refers to physical appearance of an individual with respect to gene expression for particular trait. phenotype
Answer:
Phenotype , is the term that refers to the physical appearance of an individual with respect to gene expression for a particular trait
hope it helps
Della and Nick drove at constant
speed from town A to town B along
the same road. The distance between the
two towns was 210 km. Nick left
Town A half an hour later than Della
Both of them arrived in Town B at
the same time . Della drove at a
Speed of 60 km/h Find Nick's speed.
Plzz help mee
Answer:
70 km/hr
Explanation:
Distance between town A and B = 210 km
Della's speed = 60 km/hr
Time taken by Della = distance / speed
Time taken by Della = 210 km / 60km/ hr
Time taken by Della = 3.5 hours
Since Nick left half an hour later Than Della ;
Then, Nick's travel time = 3.5 - 0.5 = 3 hours
Nick's average speed = Distance /time
Nick's average speed = 210 / 3 = 70km/hr
Amplify The temperature of the areas surrounding Farmington before Storm 1 and before Storm 2 was about 8°C, and there was the same amount of water vapor in the air. Storm 1 had more rainfall than Storm 2. Farmington Before Storm 1: Photograph of farmland on a clear day, with a blank response box containing a question mark. The air temperature is 8° Celsius. Before Storm 2: The same scene with an air parcel in place of the blank response box. The temperature inside the air parcel is 19° Celsius and outside is 8° Celsius. Arrows labeled wind frame the air parcel, pointing inwards. What were the conditions before Storm 1, and why did more rain fall with those conditions?
Storm 1. The air parcel at the surface was warmer and had more energy, so when it moved higher, it lost more energy.
The condition before storm 1 should be that the air parcel of the surface should be considered as the warmer and contain more energy.
What are weather patterns?It means the repeated way with regard to the weather that could be occur for days or it can be for the weeks also . It should be leads by heat from the sun and the movement can be done from the air.
Moreover, in the storm 1, the air parcel of the surface should be considered as the warmer and contain more energy. Due to this, it should high and lost the energy.
learn more about air here: brainly.com/question/5096224
Im getting 10 baby parakeets i have enough room for them and enough money to care for them plus i have the time but am i crazy for wanting to keep them all?
Answer:
No not at all! That's your preference and what you want.
Explanation:
~Hope this helps you
A large population of Yellow perch lives in the East river. The Walleye is a larger fish that eats the Yellow Perch. Despite lots of prey all the Walleye have moved from the East river to a new river. What most likely caused the Walleye to move to a different river?
(A)There is a lack of food in the East river which caused the Walleye to move to a different area.
(B) The Walleye are no longer able to catch the Yellow Perch and need to move to a different area.
(C)There is climate change which has caused the resources to decline in the East river.
(D) There is pollution in the East river that the Yellow Perch are adapted to but the Walleye are not.
Answer:
(D) There is pollution in the East river that the Yellow Perch are adapted to but the Walleye are not.
Explanation:
To ensure survival and cntinurd sustenance in an environment, there is need for an animal to posses certain features which would enable her cope with the conditions of the environment. The ability of animals to successfully live and survive in an environment is made possible through adaptation as the animal's adaptive features ensures the animal is able to live through and cope. If the adaptive features aren't suitable for such environment, then migration has to occurs, leading the animal to find a more suitable environment for survival. In the scenario above, the East river was presumed to be a good habitat for the Walleye and Yellow Perch, in spite of the available and abundance of food, the Walleye migrated, which is most likely due the fact that the Walleye lack the adaptive features to survive in the East river probably due to pollution which the Yellow Perch is well adapted to.
which statement is not part of the cell theory
Answer:
abcd
Explanation:
llkpd
Explain what is “bottleneck” and why genetic drift is more powerful in small populations.
Answer:
because more is being forced through
Explanation:
Answer:
A bottleneck in genetics is an event that kills off or isolates a large portion of the population.
Explanation:
The more individuals in a population, the greater the genetic diversity. A genetic bottleneck happens when the number of individuals in a population gets greatly reduced. This happens as a result of random chance. For example, a storm might come through and knock down a bunch of trees. Birds that live in the trees may get harmed and those that survive now have to find a new home, so they migrate to other areas leaving behind a small population. This is important because the fewer individuals there are, the less genetic diversity and therefore, the less ability of the population to adapt. If you have lots of different genes available and a new disease arises in the population, it's more likely that some individuals will survive. If you only have a few genes available, it is less likely any individuals will survive. This can lead to really quick adaptation and evolution of a species.
Where is oxygen added to the blood?
Answer:
Inside the air sacs, oxygen moves across paper-thin walls to tiny blood vessels called capillaries and into your blood. A protein called haemoglobin in the red blood cells then carries the oxygen around your body.
Answer: The bloodstream
Explanation:
