Answer:
As chordates, vertebrates have the same common features: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post tail. Vertebrates are further differentiated from chordates by their vertebral column, which forms when their notochord develops into the column of bony vertebrae separated by discs.
This is a change in genetic makeup of a population or species over time
Answer:
Mutation
Explanation:
Mutation change the genetic makeup of a population of species over time.
An example is the immunity of plasmodium parasite to chloroquine without time.
Answer: mutation
extra words cause it wasnt long enough
Which of the following elements is an essential part of organic compounds in his cutest structure and function of any cell?
Oxygen
Nitrogen
Hydrogen
Carbon
Hydrogen
followed by carbon, oxygen, and then nitrogen.
Two genes for two different traits located on the same chromosome are said to be
Answer:
Gene Linkage
Explanation:
In a situation where we have two genes which are for two different traits or different characteristics situated on the same chromosome they will said to be LINKED GENE and will often have the same Gene inheritance which is what is called GENE LINKAGE reason been that the genes are on one chromosome and Secondly they are situated very close to one another which is why they will mostly be inherited together. Example a person may have a brown eyes and a brown hair because the genes for the hair and eyes are situated close to one another which is why the genes are both inherited together.
List three examples of single celled eukaryotes.
Answer:
Explanation:
Algae, phytoplankton and zooplankton
please help asap, i’ll give you brainliest
Answer:
B i think
Explanation:
Which of the following statements about enzymes is correct?
A.They are destroyed by temperatures below 10 °C.
B.They are changed by the chemical reactions they control.
C.They are all proteins.
D.They are found only in the alimentary canal.
Answer:
C.They are all proteins.
Which of these is the primary site of protein synthesis?
a. mitochondria
b. cytoplasm
c. nucleus
d. ribosomes
Answer:
d) ribosomes
I belive is d
Plssssss help what the answer
Answer:
[tex]\bold{\huge{\fbox{\color{Red}{Sorry don't know}}}}[/tex]
False all it needs is air
The kinetic theory states that particles are in constant _______________.
Choose one answer.
a. Opposition
b. Motion
Answer:
Motion
Explanation:
Kinetic particles are always in motion, that should just be the fundamental law of kinetic energy
What are three reasons why it is important for cells to stay so small?
Answer:
Cells are so little, so they can maximize their ratio of surface area to volume. Smaller cells have a higher ratio which allow more molecules and ions move across the cell membrane per unit of cytoplasmic volume. Cells are so small because they need to be able to get the nutrients in and the waste out quickly.
Explanation:
i think this is the answer so yeah:D
Answer:Cells are small because they are more efficient as smaller entities. Information within small cells is transmitted more quickly and efficiently than within larger cells. The nucleus or "command center" of the cell initiates cellular activity by converting genetic information into functional molecules, such as proteins. These proteins and other molecules are then directed around the cell to perform specific functions. The larger the cell, the longer these proteins and other cellular processes will take to carry out their functions. This is quite energy expensive and a less than ideal situation; therefore, cells tend to be relatively small.
As cells increase in size, the volume increases by a power of 3, whereas the surface area increases by a power of 2. This expansion results in a lower surface area-to-volume ratio that is less efficient for transmitting information through cells. Information coming into, traveling through or exiting cells must traverse a much greater distance (through the increased volume) to reach its final destination. Thus a higher cell surface area-to-volume ratio, i.e., smaller cell size, is desired for most efficient cellular activity. Additionally, and importantly, the smaller surface area and larger volume of larger cells does not permit enough molecules to pass in or out of the cell. Because information can enter or exit a cell through it's plasma membrane, the greater the surface area-to-volume ratio, the more molecules that can enter or exit per unit of volume. This is also much more efficient for cells.
Explanation:
What organ in the respiratory system produces sound waves
as air passes through it?
Answer:philis or esophagus
Explanation: I donno one if the two
If dad had a blood type of AB and mom had a blood type of Heterozygous B, what will the children blood type possibilities be and what percentage for each
you would most likly have ur moms blood just in case its not the real father
Which part of the cell is selectively permeable? Why does it say so?
Answer:
cellular membranes
Explanation:
Cellular membranes are selectively permeable because they allow only certain molecules to cross into and out of the cell. The phospholipid bilayer is a selectively permeable membrane that surrounds all biological cells. The movement of molecules across the cell membrane bilayer can occur by passive transport (does not require energy) or active transport (requires energy). For example, water molecules pass passively through the cell membrane (passive transport), while other molecules pass through transmembrane proteins against a concentration gradient (active transport).
What type of thunderstorms do tornadoes come from most often?
A. Air Mass/Frontal
B. Frontal/Super-cell
C. Air Mass/Moist-cell
D. Air Mass/Super-cell
Answer:
B. Frontal/Super-Cell
Explanation:
The type of thunderstorm that most often come from tornadoes is the Frontal/Super-cell. Thus, the correct option for this question is B.
What is a Thunderstorm?A thunderstorm may be defined as a type of natural calamity that significantly includes a storm with lightning and thunder. This natural calamity is generated by a cumulonimbus cloud that typically produces gusty winds, heavy rain, and sometimes hails.
According to the context of this question, most often tornadoes are generally spawned from supercell thunderstorms. These thunderstorms are significantly characterized by a persistent or continuous rotating updraft and form in environments that direct the vertical wind shear and five rises to the frontal.
Therefore, the Frontal/Super-cell is the type of thunderstorm that most often come from tornadoes. Thus, the correct option for this question is B.
To learn more about Thunderstorm, refer to the link:
https://brainly.com/question/25408948
#SPJ5
Select the correct answer.
What is the primary effect of ozone depletion?
1Harmful substances will be added to the air.
2Water will be contaminated
3Harmful ultraviolet (UV) rays will enter the Earth's atmosphere.
4Land quality will be degraded.
Answer:
1 nowwwwwwwwwwwwwwwwwwwww nnooooooowwwwwwww
Answer:
The answer is #3 or C.
Explanation:
Ozone layer depletion causes increased UV radiation levels at the Earth's surface, which is damaging to human health. Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders.
True or False:
Most earthquakes are too small to notice
Answer:
true
Explanation:
i checked
even i didnt know this
thx for info tho
___________________________________________________________
Answer:
Most of them are too small to feel. We cannot predict exactly when the next big earthquake will happen in the Bay Area, or anywhere else; we can only give a probability.
___________________________________________________________
When a gene mutation occurs, the nucleotides are in the wrong order which means the coded instructions are wrong and faulty proteins are made or control switches are changed.
Answer:
The statement is true.
Explanation:
Mutation can be defined as any permanent alteration in the DNA base sequence of the genome of an organism, that is, a mutation is any change in the nucleotide sequence of the. DNA. This, in turn, can be of two types: By substitution of bases: alterations in the nucleotide sequence of a gene and two classes are known: transitions or transversions, and by loss or insertion of nucleotides: these are modifications where it can be losing or adding a nitrogenous base, which is important for encoding a specific protein and therefore changes the message of the genetic material.
How Fast can you answer CORRECT how fast can i give you brainliest??? TWO answers explain your answer if its correct ill do a 100point question just for you:D..
//
Answer:a and b
Explanation:
What would be affected negatively by contaminated watersheds?
crops
sewers
ОООО
chemicals
water cycle
Answer:
crops is the best choice here hope this helps
Answer:
a
Explanation:
1) Gregor Mendel created the law of independent assortment, that genes are distributed from parent to offspring independently of only another. Which characteristic of Meiosis primarily causes this, and what phase does it occur during?
a. Homologous pairs form and align, during Interphase
b. Crossing over occurs between Homologs, during Prophase 1
c. Meiosis enters a second round of splitting, during Prophase 2
d. Chromosomes are separated into 4 separate cells, during Anaphase 2
2) Which of the following is a Homo-zygous Genotype?
a. GG
b. Gg
c. gg
d. both A and C
3) A red flower (RR) is crossed with a red flower (rr). What are the chances for each type of offspring by GENOTYPE.
a. 25% RR, 50% Rr, 25% rr
b. 50% Rr, 50% rr
c. 100% Rr
d. 100% Red offspring
4) In Genetics, Dominant and Recessive are terms used to describe the relative strength of a specific trait. Which of the following is true for the term “recessive”?
a. Recessive genes can be masked by dominant genes
b. Recessive genes are always visible
c. In order to have a recessive trait, your parents must display that trait
d. Recessive genes show up later in life
5) Two Monsters, Hagatha and Urman, are expecting a child together. Hagatha is Hetero-zygous for Sharp claws, while Urman is Homo-zygous Recessive for Dull claws. Which of the following correctly identifies the Genotypes of both monsters? (use D or d to represent claw alleles)
a. Hagatha is Dd, Urman is dd
b. Hagatha is Dd, Urman is DD
c. Hagatha is DD, Urman is Dd
d. Hagatha is DD, Urman is dd
2 = d
3 = a
4 = a
5 = a
I am not so familiar with 1 and 3 sry
Homzygous means two identical alleles so a and c are both homzygous
recessive genes are not expressed if a dominant allele is present but with be expressed if the no dominant allele is present.
If you do a cross test you can determine the percentage.
Hagatha is heterozygous meaning non identical allele like Dd or dD and the other is homzygous recessive meaning that it has identical allele like DD or dd but it's recessive so it's dd.
I hope I helped you helped you enough
Which pair shows the chromosome numbers in human cells both before and after meiosis?
O 46 and 46
O 23 and 23
O 23 and 46
O 46 and 23
PLEASE help me with this I have 1h left
Answer:
What are the word options?
Explanation:
In squirrels, there are 3 potential phenotypes: Black, White, and Gray. A Gray squirrel is crossed with another Gray squirrel. What percentage will be Gray?
Answer:
Explanation:
A gray squirrel can either have the same alllele GG or have two different allele Gg this will determine the percentage of the offspring that will be Grey.
For 2 parent with same allele
GG × GG
!
GG GG GG GG
all are grey 100%
For 2 parents with different allele
Gg × Gg
!
GG Gg Gg gg
75% will be grey
25% other color
What can viruses with glycoproteins do differently from viruses that do not have them?
Answer:
Well you could pay more attention in class you don't have to ask this easy question!
Explanation:
"A test cross is used to.."
A. Determine the genotype of an organism with a recessive trait
B. Determine the phenotype of an organism with a dominant trait
C. Determine The phenotype of an organism with a recessive trait
D. determine the genotype of an organism with a dominant trait
Answer:
B. Determine the phenotype of an organism with a dominant trait
Explanation:
have a nice day!
What type of energy change occurs as a match burns?
A.
There is an increase in total energy.
B.
Chemical energy changes to light and heat energy.
C.
Kinetic energy changes to potential energy.
D.
There is a decrease in kinetic energy.
Answer:
A
Explanation:
It has kinetic energy and chemical energy too, so A just sums up of those two.
Why does cellular respiration need photosynthesis?
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
Explanation:
didn't already answer this question???
If humans have 23 pairs of chromosomes, each carrying hundred to thousands of genes, roughly
how many genes are there in the human genome?
A) 23
B) 46
C) 1000
D) 20,000
E) 200,000
1. What are sediments? The new minerals created after chemical weathering Small pieces of rock or soil material Small sections of tectonic plates The new land created by deposition
Answer:
The new minerals created after chemical weathering
Explanation:
The new minerals created after chemical weathering because sediments are natural minerals which are produced as a result of chemical weathering of rocks which are transported by wind, ice, water through the forced of gravity. Sediments can consist of rock and minerals or remains of plants and animals that are deposited to a new place after weathering or erosion.
7,000,000 kilocalories are available at the producer level. The secondary consumers will
have
A. 700,000,000 kcal available
B. 7,000 kcal available
C. 700,000 kcal available
D. 70,000 kcal available