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Which macromolecule makes up the main structure of the cell membrane?
Answer:
The principal components of the plasma membrane are lipids (phospholipids and cholesterol), proteins, and carbohydrate groups that are attached to some of the lipids and proteins.
The main structure of plasma membrane is made up of lipids.
What is a cell membrane?A membrane is what separates a cell's internal environment from its external environment.It has selective permeability.It is made up of a bilayer of lipids.It contains embedded proteins that may be central or peripheral.Can all molecules cross the plasma membrane?No, all molecules cannot pass through plasma membrane.The compounds that can cross it are small nonpolar molecules or small, charged polar molecules.There are special proteins like carriers, channels etc., that aid in the transportation.What are a few of the plasma membrane's functions?Plasma membrane prevents undesirable and dangerous substances from entering the cell.
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Describe geologic processes. How have they changed the surface of the earth ? (give examples)
Jill is blood Type O. She has two older brothers (who tease her like crazy) with blood types A & B. What are the genotypes of her parents with respect to this trait?
Answer:
There you have it. Jill's parents are IAi & IB
Explanation:
one brother: Type B, one of the parents must have the IB allele
other brother: Type A,
other parent must have the IA allele & have a genotype of IAi.
Jill's parents are IAi & IB
Jill's parents have the genotypes IAi and IBi.
What is blood type?Blood type refers to the classification of blood based on the presence or absence of certain antigens on the surface of red blood cells. The most common system used for classifying blood types is the ABO system, which has four types: A, B, AB, and O.
If Jill's blood type is O, then she inherited an O allele from each of her parents. Since her two older brothers have blood types A and B, we can conclude that her parents are both heterozygous for the A and B alleles (IAi and IBi). This means that each parent contributed an i allele to Jill, resulting in her blood type O.
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Why are genetic variation and selective breeding are advantages of sexual reproduction?
need help plss this was due last week ://
the systolic and diastolic pressure is respectively are:-
a) 120 and 80 mm of Hg
b) 80mm and 120 mm of Hg
c) 120 and 120 mm of Hg
d) 80 and 80mm of Hg
Answer:
A
Explanation:
Systolic pressure is the maximum blood pressure during contraction of the ventricles; diastolic pressure is the minimum pressure recorded just prior to the next contraction. The blood pressure is usually written as the systolic pressure over the diastolic pressure
what organic molecules are found in neurons
Explanation:
Like all animal cells, the cell body of every neuron is enclosed by a plasma membrane, a bilayer of lipid molecules with many types of protein structures
What hypothesis have the Grants been testing?
Answer:
Various finches descended from one common ancestor.
Explanation:
Hope this helps
Normally organisms undergo _____ to make usable energy from glucose in the presence of oxygen. However, ____ allows some organisms to generate energy in areas where there is no oxygen.
1. Anaerobic respiration, Aerobic Respiration
2. Anaerobic Respiration, Photorespiration
3. Photosynthesis, Glycolysis
4. Aerobic Respiration, Anaerobic Respiration
Answer:
4
Explanation:
aerobic respiration is respiration in the presence of oxygen and anaerobic respiration is repiration wirhout the presence of oxygen.
Replicate the following DNA strand: TCAGGTAAC
Answer:
AGTCCATTG
Explanation:
Answer:
AGTCCATTG
Explanation:
Apples (A) Goes with Trees (T)
Cars (C) Goes with Garages (G)
Hope this helped.
The process of meiosis is most closely associated with
Answer:
Sexual reproduction.
Explanation:
I'm doing this unit right now. Hope this helps :)
You have a cup of hot chocolate that is not warm enough for you. You decide to pour it into a pan to heat the drink. Explain how thermal energy is being transferred to the chocolate drink when you turn the stove burner on.
Hello, I would love to know why do humans cry.
Answer:
because women(;
Explanation:
Answer:
The answer is at the bottom!! ;)
Explanation:
Humans have to cry because when you cry your body releases endorphins and oxytocin. These natural chemical messengers help relieve emotional distress along with physical pain. In other words, crying is a self-soothing behavior.
Hope this answers your question!! ;)
DESCRIPTION: This organ secretes enzymes and acids to help George break down food. Is there a similar human organ
that performs this function
which statement is true of y chromosomes
a. only men have them
b. all babies have them
c. only women have them
d women have two of them
Answer:
A. Only men have them
Explanation:
Men's DNA code is XY
Woman's is XX
Have a nice day!
You wake up and unplug your cellphone from the wall socket. A cell phone, while charging, uses 2.6 watts/hour. Assume it charged overnight (8 hours).
HELP !!
Which process that is necessary for cell
reproduction occurs during cell growth?
A: DNA replication
B: RNA replication
C: Dissolution of the cell membrane
D: The nucleus falls apart
Answer:
A: DNA replication
what are the tools they used for organ donation
Answer: Organ transplantation is a surgical procedure which involves the transfer of organ from donor to receiver.
Explanation:
The organ transplantation require various medical tools:
Cutting and dissecting instruments: Scalpels, and scissors to cut the organ from its site of origin.
Holding instruments: Forceps and clamps are used to handle the organs while cutting them from their original site and placing them in another location.
Homeostatic instruments: Artery forceps to stop the cessation of blood from blood capillaries when an organ is cutted from its place.
What is surface water?
Answer: noun;
1. water that collects on the surface of the ground 2. the top layer of the body of water
Explanation:
PLSS HELP‼️‼️
Which statement is part of the process of natural selection?
A. There is little variation among members of a population.
B. Organisms produce fewer offspring than can survive.
C. Traits do not pass from one generation to the next.
D. Individuals with useful traits survive and have offspring.
Answer:
I believe the answer is D.
Explanation:
Natural selection is used for the survival of a species.
Which weathering process is mechanical?
A. Solution
B. Carbonation
C. Ice wedging
D. Hydration
_____ is the sum of all potential and kinetic energy.
Group of answer choices
Law of Conservation of Energy
Gravitational Potential Energy
Stored energy
Mechanical Energy
Answer:
Mechanical Energy
Explanation:
In physics, "mechanical energy is the sum of potential energy and kinetic energy."
what is the chemical equation of photosythesis ( Write in chemical equation and word form.)
Explanation:
6CO2 + 6H2O => C6H12O6 + 6O2
During photosynthesis, carbon dioxide gas and water reacts in the presence of sunlight to produce glucose and oxygen gas.
Explanation:
[tex]\tt{6CO_2 + 12H_2 O→C_6 H_{12 }O_6+ 6O_2+ 6H_2 O}[/tex]
Here, six molecules of carbon dioxide (CO2) combine with 12 molecules of water (H2O) using light energy. The end result is the formation of a single carbohydrate molecule (C6H12O6, or glucose) along with six molecules each of breathable oxygen and water.
investigate the conditions required for seed to germinate. keep the dishes at room temperature for a week.explain your observations
Dry cotton wool
wet cotton wool
covered with water
Explanation:
Starting off, the conditions required for a seed to germinate are:
warm temperatures, so that enzymes can act efficiently.water, for chemical reactions to place.oxygen, for respiration.Observations:
Dry cotton wool: Seeds placed here will not germinate. They will not show any changes since not all the the conditions are met. (There's no water)
Wet cotton wool: Seeds placed here will germinate since all the conditions required for germinations to take place are met.
Covered with water: The seeds will gradually start to expand. The oxygen which is dissolved in water does not enter the seed due to excess water thus preventing germination.
Which process does an organism use to move LARGE molecules out of a
cell? *
Answer:
Exocytosis
Explanation:
Exocytosis definition and purposes. Exocytosis is the process by which cells move materials from within the cell into the extracellular fluid. Exocytosis occurs when a vesicle fuses with the plasma membrane, allowing its contents to be released outside the cell.
True or False: If a dominant allele is present, the recessive trait will not be expressed
Answer:
True
Explanation:
I believe it is true, I asked my older brother and he said it's true, but I hope I'm right UnU
what is number 9 and 11
Answer:
still 9 and 11. No operations are happening
Explanation:
The likelihood that a particular event will occur is called the events
A: Sequence
B: Possibility
C: Outcome
d: Probability
Answer:
i guess D...Probability
If number of electrons in an atom is 8 and number of protons is also 8, then
(i) what is the atomic number of the atom? and
(ii) what is the charge on the atom?
Answer:
i) 8
ii)0
Explanation:
The equal nos of the electrons and protons means it's not a ion, which makes the atomic number equal to them.
Since it is not an ion, the charge shall be 0 since it is neither positively nor negatively charged. The overall charge of an atom is neutral too.
Answer:
(i) atomic number = number of protons = number of electrons = 8
(ii)atom will be neutral (no charge) because number of protons(+) is equal to the number of
electrons (-).
Explanation:
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