which provides the best evidence that life on earth has changed over the last few million years ?
The mineralized remains of an animal or plant. In short fossil.
multiple choice
click all that apply
Answer:
change their activity (turning on or off)changing the association with other proteinschanging the localization in the cellExplanation:
Phosphorylation is an example of a post-translational modification of a protein. These modifications are covalently attached to the protein and can have significant effects on its function.
These affects include altering its activity, its binding to other proteins, and where it is found in the cell.
However, post-translational modifications do not affect the amino acid sequence of the protein.
Some students were discussing running the mile in PE. The students all agreed that the cardiovascular system was very important but they could not agree on what other system was important.
Which of the following claims and reasoning would be MOST beneficial in their argument? (AKS 2b)
A.
Student 2 said the digestive system was also important because it breaks down waste produced by running, which the cardiovascular system transports to all the cells.
B.
Student 3 said the immune system was also important because it releases sweat from the body while running, which the cardiovascular system will transport away from all the cells.
C.
Student 1 said the respiratory system was also important because it brings oxygen into the body while running, which the cardiovascular system transports to all the cells.
D.
Student 4 said the muscular system was also important because it produces nutrients in the body while running, which the cardiovascular system will transport away from all the cells.
Answer:
C
Explanation:
can some one summarise what enzymes are and what they do :)
Answer:Enzymes are proteins that act as biological catalysts. Catalysts accelerate chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products.
A geologist is studying a mountain. It is made up of many relatively even
layers of igneous rock. What can the geologist conclude about how the
mountain formed?
A. It formed when an earthquake caused faults to form in a body of
rock.
B. It formed when a glacier melted and deposited rock and sediment.
C. It was formed by many layers of sediment piling up.
D. It was formed by a series of volcanic eruptions.
The mountain was formed by a series of volcanic eruptions. Option D
What can be concluded?The geologist can infer from the data that the mountain was created by a sequence of volcanic explosions. It is stated that the mountain is composed of numerous, generally uniform strata of igneous rock.
In most cases, molten material such as lava or magma that is ejected during volcanic eruptions solidifies to produce igneous rock.
Multiple igneous rock strata may accumulate over time while the volcanic activity persists, eventually producing a mountain.
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Question 8 of 20:
Select the best answer for the question.
The honeycomb-like appearance of this sandstone is a result of
A. salt weathering.
B. oxidation.
C. hydrolysis.
D. frost wedging.
Answer:
Its Salt weathering
Explanation:
Salt waethering causes those honeycomb holes.
Answer:
a
Explanation:
DUE NOW PLEASE HELP ME!!!!! 10 POINTS
Photosynthetic pigments can be separated using a technique
called paper chromatography. Which of the following
statements is false regarding this technique?
O A solvent is needed to move the molecules up the
chromatography paper.
Water was used as the solvent to separate the various pigments.
The smaller molecules moved faster and further up the
chromatography paper after a certain amount of time
The paper chromatography can be used to separate all
photosynthetic pigments not just chlorophyll.
The time it takes for an animal to metabolize a drug to a non-detectable levels could be ____ than that of the withdrawal period 
A:Longer
B:Shorter
C:Same time
The time it takes for an animal to metabolize a drug to a non-detectable levels could belongerthan that of the withdrawal period. Hence the correct option is A.
The metabolism of a drug refers to the process by which the body breaks down and eliminates the drug from the system. The withdrawal period is the time required after administering a drug during which the animal must not be slaughtered for human consumption to ensure that no residues of the drug are present in the edible tissues.
There are several factors that can influence the metabolism of a drug in animals, such as the drug's chemical properties, the animal's species, age, health status, and metabolic rate. Some drugs may be metabolized relatively quickly, while others may take longer to be completely eliminated from the system.
Hence the correct option is A.
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what body systems ate most pikely involved in sensing and responding to a sharp object
Answer:
The nervous system, the integumentary system, the muscular system (and the skeletal system) are all involved in responding to a sharp object.
Explanation:
H E L P P L E A S E A S A P TwT
Answer:
B.) Reduction division reduces the number of chromosomes in a reproductive cell...
D.) Fertilization... creates an organism with a new combination of DNA
Explanation:
why is a magnitude scale called a backward scale?
Answer:
It is called the ‘backwards scale’ as the magnitude goes backwards, and because ancient astronomers had flaws in the scale, including the ‘backwards’ aspect.
Explanation:
Hope I helped!
Fungi, many birds, and a wide variety of insects all share the habitat of a tree in the forest. Part of the Choose... of the fungi is to obtain energy from dead organic matter, such as dead wood. Temperatures above 0°C and sufficient water in the environment help define the range of tolerance for fungi.
Answer:
1. Habitat, 2. Niche, and 3. Tolerance
Explanation:
The tree is a habitat for many organisms such as birds, fungi, and insects in the forest ecosystem as it provides shelter and food. Habitat can be understood as the address of an organism,
Fungi are saprophytic energy that obtains energy from the dead organic matter that presents on the tree, which is the niche of the fungi. Niche is like the job or work of an individual organism.
Fungi can grow in extreme temperature and waterlogging conditions which shows the tolerance of the fungi.
Answer:
Habitat, Niches, Tolerance
Explanation:
Got it off Histrionicus, I just took the test and they were right. :))
(06.02 MC) Which of the following correctly explains the role of antibiotics in the human body? (2 points) a They break down damaging toxins created by bacteria. b They increase the number of white blood cells in the blood. c They rupture the cell wall or prevent protein synthesis in bacteria. d They reduce the effects of fever, swelling, and inflammation in the body.
Answer:
The beneficial role of antibiotics in the human body is given because they produce rupture the cell wall or prevent protein synthesis in bacteria.
Explanation:
Antibiotics are a group of drugs that fight bacteria, eliminating them, to cure infectious diseases.
The mechanisms of action of antibiotics aim to break the bacterial protection or interfere with their vital functions to make them unviable:
Destruction of the bacterial wall or membrane. Interference with protein synthesis. Inhibition of the synthesis of nucleic acids.In general, the effects of antibiotics on bacteria are to rupture the cell wall or prevent protein synthesis. Through these mechanisms, antibiotics eliminate and prevent the reproduction of pathogenic bacteria, thus eliminating the infections they produce.
The other options are not correct because:
a. Breaking down damaging toxins created by bacteria is an anti-toxin function.
b. Antibiotics do not increase the number of white blood cells in the blood.
d. Reduction of the effects of fever, swelling, and inflammation in the body is a function of antipyretics and anti-inflammatories.
Answer:
They rupture the cell wall or prevent protein synthesis in bacteria.
Explanation:
Trust me I took the test.
8
People with a physiological dependence on a substance, such as an addictive drug,
will experience
tolerance but not withdrawal.
both tolerance and withdrawal.
neither tolerance nor withdrawal.
withdrawal but not tolerance.
Answer:
both tolerance and withdrawal.
Explanation:
Answer:
Both tolerance and withdrawa
Explanation:
The main difference between a prokaryotic cell and a eukaryotic cell is that a
prokaryote lacks
Answer:
Membrane bound organelles ( Mitochondria, lysosome, Nucleus,..)
Answer: A nucleus
Explanation:
What do dermal tissues in plants do
Answer:
The dermal tissue system protects the soft tissues of plants and controls interactions with the plants' surroundings. The epidermis is a dermal tissue that is usually a single layer of cells covering the younger parts of a plant. It secretes a waxy layer called the cuticle that inhibits water loss.
Primary dermal tissues, called epidermis, make up the outer layer of all plant organs (e.g., stems, roots, leaves, flowers). They help deter excess water loss and invasion by insects and microorganisms.
(hope this helps ^^)
A fossil that forms when the hard parts, I.e bones, wood, etc.., are turned into stone
A: index fossils
B: mold and cast
C: petrified fossils
D: trace fossils
Answer:
C: Petrified Fossils or B: Mold and Cast
Explanation:
Can someone help me?
Answer:
B
Explanation:
It kind of like a shield for the cell. It controls what goes in and what comes out!
I hope this helps!
Can someone please help me with these 2 questions? ILL GIVE BRAINLIEST
Answer:
1: The higher the force applied to the ball, the harder to make a home run because of the third law: every action has a reaction, the reaction is absorbed by the bat.
2:Same equation: F=MA from the second law, if the ball has a higher mass, it will have a higher force.
Explanation:
The third rule, which states that every action has a response, which is absorbed by the bat, makes it tougher to hit a home run the more power is given to the ball.
Explain Newton's law.Newton's laws of motion are three fundamental physical laws that describe the behavior of objects in motion and how they interact with forces. The laws were first published by Sir Isaac Newton in 1687.
Law of Force and Acceleration - The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass. This law is often expressed as F=ma, where F is the net force acting on an object, m is the mass of the object, and a is the acceleration of the object.
Law of Action and Reaction - For every action, there is an equal and opposite reaction. This law states that when one object exerts a force on another object, the second object exerts an equal and opposite force on the first object.
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A scientist thinks he has discovered a drug that interferes with the functioning of a virus in the human body. To effectively block infection, the drug can
The correct options for the question are as follows:
weaken viral respiration.
destroy viral mitochondria.
reduce the ability of the virus to absorb cells.
prevent the virus from entering cells.
Answer:
The correct answer is - prevent viruses from entering the cell.
Explanation:
Describe the alternation of generations in plants. (2 points)
Answer:
Alternation of generations (also known as metagenesis) is the type of life cycle that occurs in those plants and algae in the Archaeplastida and the Heterokontophyta that have distinct haploid sexual and diploid asexual stages. ... The haploid spores germinate and grow into a haploid gametophyte.
Explanation:
yw
Answer:
Alternation of generations describes a plant's life cycle as it alternates between a sexual phase, or generation and an asexual phase. The sexual generation in plants produces gametes, or sex cells and is called the gametophyte generation. The asexual phase produces spores and is called the sporophyte generation.
Explanation:
Through many studies, including imagery of cells using an electron microscope, it has been determined that the cell membrane consists of two layers. This is known as the bilayer. What is this bilayer composed of
A. Carbolipids
B. Phospholipids
C. Protolipids
D. Adenosine triphosphate
Answer:
b
Explanation:
During ______ oxygen defuses into a cell trough the cell membranes.??
Answer:
diffusion.
Explanation:
i answered because i need points.
Which condition leads to a slower rate of weathering?
Answer:
High temperature conditions lead to a slower rate of weathering.
Answer:
High temperatures
Explanation:
A S-shaped curve is called a(n)
Answer: Logistic growth curve (A.)
Explanation:
What would happen to an animal cell with an internal salt concentration of 10% if it were placed in a salt solution with a concentration of 30%?
O The water would move out of the cell and the cell would decrease in size.
O The water would move into the cell and the cell would increase in size.
O The salt would move into the cell and the cell would increase in size.
O The salt would move out of the cell and the cell would decrease in size..
Answer:
The water would move out of the cell and the cell would decrease in size.
Explanation:
This question is depicting OSMOSIS, which is the movement of water from a region of high concentration (low solute concentration) to a region of low concentration (high solute concentration) across a semi-permeable membrane. This movement is caused when a concentration gradient forms between the two sides of the membrane.
In this case, an animal cell contains an internal salt concentration of 10% while the salt solution has a concentration of 30%. This means that the animal cell is hypotonic (contains high water concentration) to the salt solution, hence, water would move out of the cell and the cell would decrease in size
which statement best explains what happens when a cell is placed in a sugar solution with a sugar concentration that is lower than that of the cytoplasm of the cell?
Answer:
B.
Explanation:
I'm not COMPLETELY sure, but usually water wants to always make everything equal, so in order to make the sugar levels in both even, it will leave the cell to increase sugar levels inside and decrease levels outside.
Which of the following correctly identifies the most productive layer of a soil profile?
What is the definition of sex for animals
Answer: Bestiality is a word describing sex between a human and an animal. There are few things stranger or more repulsive than bestiality.
Explanation: