The human body works constantly to maintain a stable, internal environment. This environment is called
A)equilibrium.
B)fitness.
C)health.
D)homeostasis.
The products of photosynthesis are the
In a population of gerbils, long hair (H) is completely dominant over short hair (h). If 18% of the population has short hair, calculate the percentage of the population that is expected to be heterozygous (Hh). ...?
Answer:
49 percent
Explanation:
I got this question correct on the quiz.
Which of the following invented the polymerase chain reaction (PCR) that allowed scientists to enlarge and study genetic material?
Charles Darwin
Kary Mullis
Marshall Nirenburg
Nettie Stevens
Answer:
Kary Mullis
Explanation:
I got it right on a test
What is one evolutionary advantage angiosperms have over gymnosperms?
Answer: The one evolutionary advantage of angiosperm over gymnosperm is the pressence of flowers. The pressence of flower makes it most successful among other plant group. The pressence of flower in the plant makes plant look more attractive and attracts insects for pollination. This property allows better transportation of flower.The more the insects are attracted towards the plant the transportation of seed will be more.
How many calories are in carne asada nachos from Albertos?
Arrange the following five events in an order that explains the mass flow of materials in the phloem.
1. Water diffuses into the sieve tubes.
2. Leaf cells produce sugar by photosynthesis.
3. Solutes are actively transported into sieve tubes.
4. Sugar is transported from cell to cell in the leaf.
5. Sugar moves down the stem.
A) 2, 1, 4, 3, 5
B) 1, 2, 3, 4, 5
C) 2, 4, 3, 1, 5
D) 4, 2, 1, 3, 5
E) 2, 4, 1, 3, 5
what are the special properties of water
In sexual reproduction, offspring are genetically different from the parents. This is because
combined genes are received from both parents.
Offspring are genetically different from their parents in sexual reproduction due to crossing-over, independent assortment during meiosis, and the random union of gametes during fertilization, leading to genetic variation.
Explanation:In sexual reproduction, offspring are genetically different from the parents due to several key mechanisms. Genetic variation is the hallmark of sexual reproduction, which results in offspring with unique genetic makeups. This genetic diversity arises from processes like crossing-over and independent assortment during meiosis, along with the random union of gametes during fertilization. This diversity is crucial for the survival of species as it allows them to better adapt to changing environments and avoid the pitfalls of inbreeding.
When walking through the woods Adam and Alise saw many mushroom-like organisms growing out of logs that were laying on the ground. These logs were pieces of trees that had either completely fallen down or had broken off of the larger tree. What did Adam and Alise really see?
A. The mushrooms were only anchored to the dead logs and were undergoing photosynthesis.
B. The mushrooms were helping the trees to stay alive.
C. The mushrooms were decomposing the dead tree logs.
D. The mushrooms and tree logs were exchanging genetic material.
Answer: Option C
Explanation:
The mushrooms belongs to the family of fungus. These are natural decomposers that helps in cleaning of the environment. They feed on the dead and decaying organic matter.
Feeding on the dead and decaying organic matter provides food to mushroom and helps in decomposing the matter and adding nutrients back into the soil.
hence, Adam and Alise saw that mushrooms were decomposing the tree log.
what is an alternative future for cells when they reach their size limit? ...?
According to famed linguist Noam Chomsky, humans have an innate ability to understand and produce language through a device he called ____
Which claim below accurately explains how the process of meiosis results in genetic variation?
20 POINTS!!! MORE THAN ONE ANSWER!!!!
Why are invasive species considered a threat to native wildlife?
They can breed and spread quickly.
They consume native species’ food supply.
They evolve, and native species don’t.
They all have higher genetic diversity than native species.
They don’t need resources from the environment as native species do.
They can breed and spread quickly.
They consume native species’ food supply.
Invasive species disrupt the ecosystem.What are invasive species?Invasive species, also called introduced species, alien species, or exotic species, any nonnative species that significantly modifies or disrupts the ecosystems it colonizes. Such species may arrive in new areas through natural migration, but they are often introduced by the activities of other species.To know more about species here
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Gamma rays are used
A. in microwave ovens.
B. to treat cancer, but they can also cause cancer.
C. in cell phone transmitters.
which of the following statements about colonial organisms is correct
compare and contrast the traditional classification and the modern classification (cladograms)
Explain why some substances are able to pass through the cell membrane
do puffer fish have vestigial structures? what are they?
Adenosine triphosphate, or ATP, is primarily used as _______ in living organisms.
Adenosine triphosphate, or ATP, is primarily used as a source of energy in living organisms.
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Which is not true of lipids?
Answer:
Explanation:
They form structural parts of cell membranes.
The carry fat-soluble vitamins to cells.
They supply cells with energy.
They supply cells with nitrogen.
An organic compound that contains carbon, hydrogen, and oxygen is most likely
Which of the following outcomes would be most likely if the membrane of a cell were no longer selectively permeable?
A)A cell wall would form outside the membrane to protect the contents of the cell.
B) Harmful substances would be able to enter the cell and cause mutations to the cell’s DNA.
C) The cell would die as it would not be able to regulate which substances could enter and leave.
D) The cell would grow as more nutrients would be able to easily enter the cell. ...?
The correct answer is:
The cell would die as it would not be able to regulate which substances could enter and leave.
:)
The most likely outcome if a cell membrane lost its selective permeability would be the death of the cell, as it would be unable to maintain homeostasis and regulate substance movement, leading to harmful consequences.
The correct option is 'C'.
If the membrane of a cell were no longer selectively permeable, the most likely outcome would be C) The cell would die as it would not be able to regulate which substances could enter and leave.
The plasma membrane's primary function is to maintain selective permeability, which is crucial for sustaining life within the cell.
Losing this ability would lead to an inability to maintain homeostasis, an essential stable internal environment. Without a selectively permeable membrane, harmful substances could enter the cell, essential nutrients could be lost, waste products could accumulate, and even the movement of water could cause the cell to swell and burst.
Which describes a constant in an experiment?
A.
the variable changed by the experimenter
B.
the quantity that must remain the same
C.
the variable that changes in response to the experiment
D.
the statement that is worded to test the experiment
The cells in your body need nutrients and other materials to stay alive. To be used by your cells, the materials must be
a. slightly acidic
b. eukaryotic
c. dissolved in fluid
d. transgenic
The cells in your body need nutrients and other materials to stay alive. To be used by your cells, the materials must be dissolved in fluid. The correct option is c.
What is a cell?Cells are the fundamental building blocks of all life. Various of cells make up the human body. They give the body structure, absorb nutrients from food, and convert those nutrients into energy.
The cell, first discovered by Robert Hooke in 1665, has a rich and interesting history that has led to many of today's scientific advances.
Cells, as we've seen, require a constant supply of energy to generate and maintain the biological order that keeps them alive.
This energy is derived from the chemical bond energy in food molecules, which serve as fuel as a result.
To survive, cells in the body require nutrients and other materials. The materials must be dissolved in fluid before they can be used by cells.
Thus, the correct option is c.
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How does carbon in sediments reach the atmosphere
Northern lights or auroras can be seen within the _____ sub-layer.
A.ozonosphere
B.ionosphere
C.exosphere
D.troposphere
A marine biologist was taking photographs of ocean animals. One animal had tentacles with long stinging cells on the end. Which of these groups did the animal belong to?
A.
mollusks
B.
cnidarians
C.
arthropods
D.
sponges
Final answer:
The animal observed by the marine biologist, characterized by tentacles with long stinging cells, belongs to the group of (option B.) cnidarians. This group, which includes jellyfish, corals, and sea anemones, uses cnidocytes with nematocysts to immobilize prey.
Explanation:
A marine biologist observed an animal with tentacles possessing long stinging cells at the end, indicating that the animal belongs to the group cnidarians. Cnidarians, a phylum that includes organisms like jellyfish, corals, and sea anemones, are known for their unique cells called cnidocytes, which contain nematocysts (stingers). These specialized cells are designed to immobilize prey with toxins, allowing cnidarians to catch their food effectively. The presence of tentacles with stinging cells is a distinctive feature of cnidarians, distinguishing them from other groups such as mollusks, arthropods, and sponges.
which gland in the endocrine system is involved in dwarfism?
Answer: Pituitary Gland
Explanation:
Pituitary dwarfism or the growth hormone deficiency is the condition in which the pituitary gland of the body does not makes enough hormone.
This results in a slow growth in the child and it results in small stature. The height of the child does not increases and and other growth related characters are also not found at the right time.
This is so because the growth hormones are not released from the pituitary gland.
What are the parts animal cell?