Answer:
1)ans:- The iris contains muscles that allow the pupil to become larger (open up or dilate) and smaller (close up or constrict).
2)ans:- Light enters the eye through the transparent front surface called the ....Cornea...
3)ans:- The rods and cones send signals to the brain along a short , thick nerve called the .....optic nerve......
************This answer is given by MD.Tashin***************
what is iron sulfide
Answer:
Iron(II) sulfide or ferrous sulfide (Br. E. sulphide) is one of a family chemical compounds and minerals with the approximate formula FeS. Iron sulfides are often iron-deficient non-stoichiometric. All are black, water-insoluble solids.
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).
Write the electronic configuration of any one pair of isotopes and isobars.
Answer:
Isotopes of carbon:(_16^12)C and (_16^13)C12
6C and 13
6C Electronic configuration is 2,4 because both the
atoms have the same atomic number and the same number of electrons as 6.
Isobars:
(_20^40)Ca - 2,8,8,2 as atomic number is 20 and 40
(_80^40)Ar- 2,8,8 as atomic number is 18
Explanation:
Hopr it's answer you plz mark as Brainlist
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.
Learn more about blood type, here:
https://brainly.com/question/275815
#SPJ6
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.
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:
Hope it's help plz mark as Brainlist
DESCRIPTION: This organ secretes enzymes and acids to help George break down food. Is there a similar human organ
that performs this function
need help plss this was due last week ://
Identify and describe the three ways the mutations affect organisms
Answer:
they may cause the development of a disease-causing allele
they may cause the development of a more beneficial allele
they, in some cases, may have no noticeable affect.
Explanation:
Answer:
Mutations may be beneficial, harmful, or neutral to organisms. If the change caused by a mutation is useful to the organism, then it is beneficial. If the change is damaging to an organism, then it is harmful. If the change is neither useful nor damaging, then the mutation is neutral.
Explanation:
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
1. Please write in the number from the organelle on the picture that matches the
name.
3 A. Cell Wall
C. Chloroplasts
E. Mitochondria
G. Nuclear Membrane
I. Cytoplas#
B. Cell Membrane
D. Endoplasmic Reticulum
F. Nucleus
H. Vacuole
3.A.Cell wall is 3 this is the layer that surrounds the cell
2.c The chloroplasts are the organelles where photosynthesis occurs
7.e The mitochondria is the organelle where cellular respiration takes place in aerobes
9g The layer that surrounds the nucleus
1.I the colloid inside the cell
4.b. The layer under the cell wall
5.d the system of tubes inside the cytoplasm
f.6 the component that contains the genetic material
5.h the organelle where water is stored
8. Chlorophyll is green because (LT#2)
A. it absorbs blue & yellow wavelengths which make green
B. it reflects green wavelengths of light
C. it absorbs green wavelengths of light
D. there is an optical illusion
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.
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.
Help ASAP! Correct me if am wrong ty
I am 99.9% sure you are correct!
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.
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
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.
how do they treat patients with diabetes? where does the insulin come from? and how do people get insulin? help me please
People with diabetes need to take insulin to help process the sugar, or they can't use it and it stays in their blood. The insulin allows sugar into the cell to be used, which is why diabetics need to take insulin. Insulin is usually prescribed by a medical professional.
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
Why are genetic variation and selective breeding are advantages of sexual reproduction?
The process of meiosis is most closely associated with
Answer:
Sexual reproduction.
Explanation:
I'm doing this unit right now. Hope this helps :)
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.
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
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.
_____ 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."
why does nondisjunction occur?
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:
what is number 9 and 11
Answer:
still 9 and 11. No operations are happening
Explanation: