Answer:
option D
Explanation:
Cell --> Tissue --> Organ --> Organ System
Similarly ,
Nervous Cell - Nervous Tissue - Spinal cord organ - Nervous System
-
Scientists generally study populations by taking a portion of each habitat and then use
the data to make inferences about the habitat as a whole. This method is called: (choose
the best answer)
sampling,
estimating,
testing,
or modeling
Genetics is defined as: Group of answer choices The scientific study of cells The study of cloning The scientific study of heredity The dividing of cells
Answer:
The correct answer is ''The scientific study of heredity''
Explanation:
Genetics is a branch of biology that studies how hereditary characters are transmitted from generation to generation and the diversity that exists among living beings. Inheritance is the physical and biological characteristics that we share with our family and that can determine our appearance and our biological characteristics, that is, our phenotype (eye color, skin type, etc.) as well as our internal characteristics. All of this is largely derived from our genetic components, that is, our genotype.
explain the two inheritance patterns of blood type
Answer:
The ABO blood type is inherited in an autosomal codominant fashion.
The Rh system of blood groups determines the gene that forms two alleles: dominant (D) and recessive (d).
Explanation:
The dominant allele determines the synthesis of antigen D, so people with this antigen are referred to as Rh +. The recessive allele is dysfunctional so no D antigen is produced and individuals are Rh-
The ABO blood group system determines a gene that has three alleles:
A, B, and O allele.
Alleles A and B are functional and determine the synthesis of certain antigens (agglutinogens A B) that are found on erythrocytes.
In this exercise we have to use the knowledge of blood to explain its inheritance factors, so we want to explain how:
So we know that blood types in addition to the types known as ABO, there is also the RH factor which is the biggest inheritance.
What are the 3 blood types?Type A blood has A antigens, B blood has B antigens, AB blood has both antigens, and type O has neither. Red blood cells also have another type of antigen called RhD, which is part of a family made up of 61 Rh type antigens. When the blood has RhD, it is type positive.
Our blood group is inherited from both parents. Just as we are given physical characteristics like skin color or hair, we also inherit blood type. Surprising as it may seem, blood group is not genetically determined at birth according to the contributions of both parents.
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The endosymbiotic theory states that the mitochondria of eukaryotes are the evolutionary result of a Proto-eukaryotic cell engulfing an aerobic bacterium, which then evolved into the mitochondrion. Which characteristic of mitochondria supports this theory of development? A retention of a single layer membrane B retention of the chlorophyll pigments C retention of their own genome D retention of their own nucleus
Answer:
The correct answer is - C. retention of their own genome.
Explanation:
The endosymbiotic theory is a theory that suggests that eukaryotic cells are developed from prokaryotic cells. According to this theory, organelles like mitochondria are developed in eukaryotic cells as the result of proteo-bacteria cells engulfing aerobic bacteria.
The evidence of this theory can be seen as the mitochondria has their own genome such as circular DNA and ribosomes as the prokaryotes.
The cells of all organisms contain DNA. In cells of which of the following groups is the cellular DNA enclosed in a nucleus?
A. bacteria.
B. eukaryotes
C. prokaryotes
D. viruses
Umm.. What is the answer then please help
Photosynthesis takes place in the (Answer here) (organelle) of (Answer here) (type of organisms).
Answer:
photosynthesis takes place in the chloroplasts of plants
Explanation:
Photosynthesis is a process by which plants make their own food using energy from light. The materials required are Carbon (iv) oxide and water. It takes place in the chloroplasts and only occurs in plants
what is the backbone of RNA made out of?
Answer:
Explanation:
It has a deoxyribose and phosphate backbone having four distinct bases: thymine, adenine, cytosine, and guanine. Is a polymer with a ribose and phosphate backbone with four varying bases: uracil, cytosine, adenine, and guanine.
1. Animals can face many problems caused by light pollution. Which is NOT one of these
problems?
a. Increased predation
b. Decreased amount of food
c. Disorientation
d. Disrupted breeding times
Answer:
Light pollution does not affect predation levels, so the correct answer is A
Explanation:
Increase predation is one of them which is not affected by Light pollution.
What is light pollution?Artificial illumination that is undesirable, improper, or excessive is referred to as light pollution.Light pollution, also known as artificial light at night, is the excessive or inefficient use of artificial outdoor light that disturbs wildlife's normal routines, adds to the buildup of carbon dioxide (CO2) in the atmosphere, interrupts human sleep, and obscures the night sky's stars.What is predation?One creature kills and eats another in predation. Predation offers energy to the creature that kills, the predator, in order to prolong its life and encourage reproduction at the expense of the organism that is eaten, the prey. Predation has an ecological impact on species on two levels.Hence, the correct option is A.
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A scientists examines eukaryotic and prokaryotic cells using a microscope. Which structure would the scientist observe in only the prokaryotic cells?
Pls help I’m so confused :(
Answer:
Left is synthesis, right is digestion
Explanation:
Synthesis refers to the creation of a product, whereas digestion refers to the breakup of the reactant or initial substance.
Please find me an information about aerobic and anaerobic organisms
Answer:
An aerobic organism or aerobe is an organism that can survive and grow in an oxygenated environment. In contrast, an anaerobic organism (anaerobe) is any organism that does not require oxygen for growth. Some anaerobes react negatively or even die if oxygen is present.
ASAP is for my brother
Answer:
I think this is right.
Explanation:
1. nucleus
2. Golgi apparatus
3. lysosome
4. mitochondria
5. peroxisome
6. ribosomes
7. cell (plasma) membrane
8. smooth endoplasmic reticulum
i need helpppp !
please number them when u type it thanks <3
Answer:
1)Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.
2) The atom that loses the electrons becomes a positively charged ion (cation), while the one that gains them becomes a negatively charged ion
3)onic bonds are important because they allow the synthesis of specific organic compounds. Scientists can manipulate ionic properties and these interactions in order to form desired products. Covalent bonds are especially important since most carbon molecules interact primarily through covalent bonding.
Explanation:
Answer:
I could only find the answer for the 1st one and 2nd one
3.
Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.
4.
The atom that loses the electrons becomes a positively charged ion (cation), while the one that gains them becomes a negatively charged ion
What do aerobic and anaerobic mean and which one is cellular respiration?
2. This body system sends out scouts to recognize pathogens such as
bacteria and viruses. Once identified, it produces antibodies to attack
and kill the pathogen. What body system is being described?
A-Immune
B-cardiovascular
C-muscular
D-digestive
simplify the following
(-107)-(-97)+(-10)
Answer: -20
Explanation:
Here is the equation to solve:
(-107)-(-97)+(-10)
First and foremost, we should note that:
- × - = +
- × + = -
Therefore, (-107)-(-97)+(-10)
= -107 + 97 - 10
= 97 - 107 - 10
= 97 - 117
= -20
Many small freshwater organisms have a structure called a contractile vacuole, which pumps water out their body. Explain how this process is an example of active transport.
Answer:
1: The process of osmosis would cause water to move into the cells causing them to swell and possibly burst. Many freshwater one celled organisms have structures called contractile vacuoles. These structures collect and pump out excess water that accumulates in the cell.
2: During active transport, a protein pump uses energy, in the form of ATP, to move molecules from an area of low concentration to an area of high concentration. An example of active transport is the sodium-potassium pump, which moves sodium ions to the outside of the cell and potassium ions to the inside of the cell.
Explanation:
How do cells maintain homeostasis without using energy
Answer:
Form the cell membrane around food to create a vacuole that is kept separate from the rest of the cytoplasm while enzymes break down the food.
Cells maintain homeostasis without using energy by relying on passive transport processes.
Passive transport mechanisms do not require the input of cellular energy (ATP) and instead rely on the inherent kinetic energy of molecules and the concentration gradients of substances.
One common example of passive transport is simple diffusion, where molecules move from an area of higher concentration to an area of lower concentration until equilibrium is reached.
Similarly, facilitated diffusion utilizes protein channels or carriers to facilitate the movement of specific molecules across the cell membrane without energy expenditure.
Osmosis is another passive process where water molecules move across a selectively permeable membrane to balance the concentration of solutes on both sides.
By utilizing these passive mechanisms, cells can maintain a stable internal environment and achieve homeostasis without the need for energy expenditure.
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how had/has human activity influenced the tropic cascade of the aleutian islands kelp forest
Answer:
humans killing whales caused orcas to have to eat otters which caused sea urchin populations to increase which caused kelp populations to decrease
Explanation:
The days are longer or shorter because the earth’s axis in blank
PLEASE HELP ME
Answer: Orbit
Explanation: The Earth’s axis being in orbit means that the Earth is in different positions around the sun at different points in time, causing day and night.
What is weight measured in
A grams
B Kilograms
C Metric Tons
D pounds
Concept: Unit Representation
You have weight which is commonly represented in SI units of KG In the US metrical units are poundsYour answer depends on which metric you are referring to.What is the function of the polar bodies created during the meiosis of the female egg cell?
Answer:
Polar bodies serve to eliminate one half of the diploid chromosome set produced by meiotic division in the egg, leaving behind a haploid cell.
Explanation:
Choose ALL that apply: Changes the APPARENT WAVELENGTH of the light. 1 point
Redshift
Blueshift
Neither of these
Answer:
The correct answer is "Red shift"
Explanation:
Blue shift: When the source and observer approach one another, the evident frequency increments or apparent wavelength diminishes. Here the Doppler shift is positive. This is known as blue shift.
Red shift: When the source and observer move away from one another, the clear frequency diminishes or apparent wavelength increments. Here the Doppler shift is negative. This is known as red shift.
5. Studying light from a star allows us to… a. determine a star's temperature b. determine what elements the star is made of c. determine how a star is moving (toward, away, fast, slow) d. all of these e. none of these
Answer:
The correct answer is option C "determine how a star is moving (toward, away, fast, slow)"
Explanation:
All realized components emanate and assimilate specific frequencies of light, which is important for the electromagnetic range. By considering the frequencies of light (as demonstrated by 'lines' inside the electromagnetic range) discharged by an object in space, astronomers can get a scope of information.
One thing they look at is the adjustment in situation of lines in the range from a star this can tell astronomers the distance away the star is, regardless of whether it is moving towards or away from us and how quick it is moving.
What are the codons for lysine?
Answer:
AAA, AAG
Explanation:
hope it helps..
( I search it)
Answer:
arginine
GCA, GCG, GCT, GCC
TCT, TCC
CGU, CGC, CGA, CGG
AGA, AGG
GCA, GCG, GCU, GCC
UCU, UCC
asparagine
TTA, TTG
AAU, AAC
UUA, UUG
aspartate
CTA, CTG
GAU, GAC
CUA, CUG
cysteine
ACA, ACG
UGU, UGC
ACA, ACG
glutamate
CTT, CTC
GAA, GAG
CUU, CUC
glutamine
GTT, GTC
CAA, CAG
GUU, GUC
glycine
CCA, CCG, CCT, CCC
GGU, GGC, GGA, GGG
CCA, CCG, CCU, CCC
histidine
GTA, GTG
CAU, CAC
GUA, GUG
isoleucine
TAA, TAG, TAT
AUU, AUC, AUA
UAA, UAG, UAU
leucine
AAT, AAC, GAA, GAG
GAT, GAC
UUA, UUG, CUU, CUC
CUA, CUG
AAU, AAC, GAA, GAG
GAU, GAC
lysine
TTT, TTC
AAA, AAG
UUU, UUC
methionine
TAC
AUG
UAC
phenylalanine
AAA, AAG
UUU, UUC
AAA, AAG
proline
GGA, GGG, GGT, GGC
CCU, CCC, CCA, CCG
GGA, GGG, GGU, GGC
serine
AGA, AGG, AGT, AGC
TCA, TCG
UCU, UCC, UCA, UCG
AGU, AGC
AGA, AGG, AGU, AGC
UCA, UCG
stop
ATT, ATC, ACT
UAA, UAG, UGA
AUU, AUC, ACU
threonine
TGA, TGG, TGT, TGC
ACU, ACC, ACA, ACG
UGA, UGG, UGU, UGC
tryptophan
ACC
UGG
ACC
tyrosine
ATA, ATG
UAU, UAC
AUA, AUG
valine
CAA, CAG, CAT, CAC
GUU, GUC, GUA, GUG
CAA
Which of the following is NOT a function of the digestive system?
Delivers nutrients to the body’s cells
Breaks down food into nutrients the body can use
Absorbs nutrient molecules into the blood
Eliminates waste from the body
Please help I am doing a test.
Explanation:
Deliver nutrients to the body cells.
a chemical change occurs when which of the following is true
A) a substance is dissolved in water
B) you can separate the materials back to their original state
C) bibbles or fizz occur
D) light is reflected off the materials
Answer:
C) bubbles or fizz occurs
Explanation:
Chem. Change:
-energy is absorbed or released (temperature changes-hotter or colder), color changes, Gas production (bubbling, fizzing, or odor change; smoke).
-Formation of a Precipitate - a solid that separates from solution (won't dissolve)
-Irreversibility - not easily reversed.
Why do people feel fireworks before hearing it?
Answer:
People feel fireworks before hearing it because light travels faster than sound.
Explanation:
We always see the colors of the fireworks before hearing their defeaning sounds. This is because light travels faster than sound, so we can see the light before hearing the sound. An example of this is seeing lightning before hearing thunder. When lightning strikes, the air around it moves very quickly, causing vibrations.
Hope this helps!
xoxo,
cafeology
Part One: Matching
Instructions. Match the term with the correct response. Write the letter of the term by the definition.
a. Anther
b. Complete flower
c. Filament
d. Incomplete flower
e. Imperfect flower
f. Perfect flower
Petal
h. Sepal
Style
_1. Colorful leaf-like structure which attracts pollinators.
2. Structure which holds up the anthe.
3. Structure which holds up the stigma.
4. Green leaf-like structures that protect the flower bud.
5. Flower which is missing sepals.
6. Flower which has both stamens and pistils.
7. Flower which has stamens, pistils, sepals, and stamens.
8. Flower which is staminate or pistillate.
9. Structure which holds the pollen.
Answer:
G 1. Colorful leaf-like structure which attracts pollinators.
C 2. Structure which holds up the anther.
I 3. Structure which holds up the stigma.
H 4. Green leaf-like structures that protect the flower bud.
D 5. Flower which is missing sepals.
F 6. Flower which has both stamens and pistils.
B 7. Flower which has stamens, pistils, sepals, and stamens.
E 8. Flower which is staminate or pistillate.
A 9. Structure which holds the pollen
Explanation:
The above are parts of a flower. The style actually holds up the stigma. It is the passage that leads down to the ovary which actually contains the ovules. Sepals are known to be green, leaf like structures which located at the base of a flower. It function is to protect the flower bud. An incomplete flower is known to be a flower that has "petals, sepals, stamens or pistils" missing. Perfect flowers are flowers that have the pistils and the stamen just in one flower.