Answer:
Through simple diffusion, down the concentration gradient.
Explanation:
The phospholipids of the membrane are amphipathic with hydrophillic heads and hydrophobic tails. Other polar molecules cannot go through this hydrophobic interior. Since small uncharged lipids are non polar and hydrohobic, they are able to go through the membrane without the help of transport proteins. Therefore, the last two options can be ruled out because facilitated diffusion includes the use of a protein. Diffusion involves molecules moving down the concentration gradient so the second option can be ruled out.
what is the function of the protein keratin
Answer:
Keratin serves important structural and protective functions, particularly in the epithelium. Some keratins have also been found to regulate key cellular activities, such as cell growth and protein synthesis
What effect do the majority of mutations have on individuals
A mutation in the code for a trait may not always change the expression of that trait. What advantage
does this provide cells?
Answer:
Some changes in the DNA sequence will not cause a change in the protein produced.
Explanation:
Fermentation and cellular respiration are both processes the breakdown glue close and
A. Store lactic acid in bonds
B. Release energy from bonds C. Require 02 as a reactant D. Produce ethyl alcohol 
Answer:
B. Release energy from bonds
Why do you think we can say there are multiple interpretations of extinct animals?
Answer:
yes there are because manu animals like dinausaurs get extinct
what is symbiosis ?
Answer:
Symbiosis -interaction between two different organisms living in close physical association, typically to the advantage of both.
Explanation:
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Answer:
interaction between two different organisms living in close physical association, typically to the advantage of both.
What would likely happen if a lion's prey wasn't available?
Answer:
It takes around to weeks for a lion to starve, or become starving. Lionesses do most of the hunting, lions are much lazier. When a lion begins to starve it will kill nearly anything to satiate it's hunger. A lot of like other creatures and predators in the wild.
Explanation:
Where is the genetic material that determines the inherited traits of an organism located inside of a eukaryotic cell?
Cytoplasm
Vacuole
Nucleus
Ribosome
Answer:
the answer is :nucleus
D. Dalmation Dogs may have either black or liver (brown) spots.
1. Two black-spotted Dalmation parents produce a liver-spotted puppy.
a. What does this tell us about dominance in spot color?
b. What is the genotype of the liver-spotted puppy?
c. What is the genotype of the mother? Of the father?
d. List the genotypes and phenotypes of all puppies these
parents could produce.
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What are the chemicals for the two strands of nucleotides
Answer fast pleaseee
The chemical structure of DNA and its nucleotides The DNA double helix is composed of two strands of DNA; each strand is a polymer of DNA nucleotides. Each nucleotide consists of a sugar, a phosphate group, and one of four nitrogenous bases. The structure and orientation of the two strands are important to understanding DNA replication. Drag the labels to their appropriate locations on the diagram below. Use only the pink labels for the pink targets, and the blue labels for the blue targets. Labels can be used once, more than once, or not at all.
In DNA and RNA, the combination of nucleotides codes for....
amino acids
ribosomes
phosophates
sugars
Answer:
Amino Acids
Explanation:
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A cell that has 6 chromosomes in the G2 phase will have how many sister chromatids during that same phase
Answer:
12 chromatids.
Explanation:
If a cell has 6 chromosomes in the G2 phase will have 12 sister chromatids during that same phase because replication of chromosomes occurs which produces two exact copies of each chromosomes. Then 6 chromatids are distributed in one daughter cell while the other 6 chromatids are distributed in other daughter cell and finally the cell division occurs.
Which statement explains the goal of using sustainable practices in food
production?
Answer: c
Explanation:
Two students below described a part of Earth's middle layer:
Bob: The deepest part
Joe: The semi-fluid part
Which part of the middle layer did Bob and Joe describe? (4 points)
A. They both described the mesosphere.
B. They both described the asthenosphere.
C. Bob described the mesosphere and Joe described the asthenosphere.
D. Bob described the asthenosphere and Joe described the mesosphere.
Answer:
c
Explanation:
Many scientists are concerned that the Ogallala aquifer in the United States is being depleted at an alarming rate. What would most likely be a major effect of this aquifer running dry?
Many crops would die because irrigation water would be limited.
The water cycle would come to a halt in the area.
Farmers would have to water crops with salt water.
Most people in the United States would not have drinking water.
Answer:
Many crops would die because irrigation water would be limited.
Explanation:
Answer:
Many crops would die because irrigation water would be limited.
Explanation:
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- Where does the National Weather Service get weather observations?
a. from 11,000 Cooperative Weather Observers
b. from thousands of radar installations
c. from thousands of weather satellites
d. from weather stations set up and operated by government meteorologists
Answer:
D
Explanation:
The Automated Surface Observation Systems (ASOS) provide the nation's primary surface weather observations from airports across the U.S. Aircraft are used to collect weather data over land and sea.
2.
Which of the following examples is a non-renewable source of energy?
wood
nuclear power
hydroelectric
wind
Answer Wood
Explanation: there will always be trees but the will not be wind at all times, nuclear energy was invented, man made so it can run out. I could be wrong. Pls don’t hate if I am.
Which mutation results in the production of molecules that can be used as a source of energy?
a mutation that causes bacteria to fight off antibiotics
a mutation that breaks down the sugar in milk, lactose
a mutation that changes the color of a part of a flower
Answer:
a mutation that breaks down the sugar in milk, lactose
Explanation: sugar that is broken down can be used as a source of energy
Answer:
The correct answer is B. a mutation that breaks down the sugar in milk, lactose
Which of the following is an example of descent with modification
This will lead to change in populations over generations in a process that Darwin called descent with modification. ... One of the best examples has been demonstrated in the very birds that helped to inspire Darwin's theory: the Galápagos finches.
a mechanism for evolution; all organisms are related through descent from an ancestor; descendants accumulated adaptations; descent of all organisms from an ancestor that lived in the past; descendants accumulated diverse modifications (adaptations)
if the first one doesnt work try the second
An example of descent with modification is a bacterium that inherits a gene for antibiotic resistance, has a more significant possibility of survival. Natural selection then applies that resistance through the population, forcing scientists to come up with a new antibiotic.
What is darwin's theory of descent with modification?Darwin described evolution as "descent with modification," the theory that species evolve over time, give rise to new species and transmit a common progenitor.
The means that Darwin proposed for evolution is natural selection.
Thus, a bacterium that inherits a gene for antibiotic resistance, is an example of descent with modification.
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During the nitrogen cycle, through which structure are nitrogen compounds first absorb into the plant?
A.) roots
B.)leaves
C.) flower
D.) stem
Answer:
It's B
Explanation:
I took the test
Answer: B (Leaves)
Explanation:
Did it engenuity unit test
What changes an object's speed and direction? *
A. Friction
B. Acceleration
C. Gravity
D. Inertia
Answer:
C
Explanation:
A change in speed is a change in velocity – so, a change in speed is an example of acceleration! Acceleration may be positive or negative. Negative acceleration is sometimes called deceleration. Force – a push or pull When a force acts on an object; it may change the object’s acceleration (speed, direction, or both).
Which parts of DNA provide the code for proteins?
Answer:
The genetic code is the sequence of nucleotide bases in nucleic acids (DNA and RNA) that code for amino acid chains in proteins. DNA consists of the four nucleotide bases: adenine (A), guanine (G), cytosine (C) and thymine (T). RNA contains the nucleotides adenine, guanine, cytosine and uracil (U).
A gene is a section of a DNA molecule that contains the information to code for one specific protein.
The DNA code contains instructions needed to make the proteins and molecules essential for growth, development and health.What is gene?A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. Many genes do not code for proteins.What is DNA?
DNA is the genetic material, which is involved in carrying the hereditary information, replication process, mutations, and also in the equal distribution of DNA during the cell division.
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the hair colors of the sons are most likely direct result of
Answer:
growth
Explanation:
on explanation needed :I
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Active
1
2
Which of the following are forms of asexual reproduction? Select three options.
zygote formation
binary fission
fertilization
fragmentation
sporulation
Answer:
we have fission fragmentation and sporulation
Answer:
2 4 and 5 (Binary fusion, fragmentation, sporulation)
Explanation:
These are all right because I took the quiz and got a 100%
What are the compounds used in mitochondria for cellular respiration?
An instrument used to separate cell parts according to density is the...
A. Compound light microscope
B. Electron microscope.
C. Blender.
D. Centrifuge.
Answer:
Explanation:
electron microscope
is an organism that uses the energy from the sun or inorganic substances to make its own food; it is also called a producer. is an organism that takes in or consumes other organisms to receive energy; it is also called a consumer.
Answer:
An autotroph
is an organism that uses the energy from the sun or inorganic substances to make its own food; it is also called a producer.
A heterotroph
is an organism that takes in or consumes other organisms to receive energy; it is also called a consumer.
Explanation:
An autotroph is an organism that uses the energy from the sun or inorganic substances to make its own food; it is also called a producer. A heterotroph is an organism that takes in or consumes other organisms to receive energy; it is also called a consumer.
What are autotrophs and heterotrophs?An autotroph can be referred to as an organism which uses the energy from the Sun or inorganic substances present in the environment to make its own food. These organisms are also called as producers. These organisms produce their own food through the process of photosynthesis.
Heterotrophs are the organisms which takes in or which consumes other organisms for receiving energy or as the food source. These organisms are also called as consumers. Consumers are further divided into different types on the basis of their food such as carnivores, omnivores, etc.
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Muscle cells
Function
what is the scientific name of human beings
Answer:
Homo sapians is your correct answer .
Which of the following are abiotic factors? (Multiple Answers
Answer:
atmosphere,sunlight,wind water