Of the 23 pairs of chromosomes in the human body, how many pairs are homologous?
A. 23
B. 22
Answers
Answer:
B. 22
Explanation:
Humans have a total of 46 chromosomes, but there are only 22 pairs of homologous autosomal chromosomes
Related Questions
im giving brain to correct answer!
The photo shows a hydra. What are hydras tissues made of?
A. Specialized cells
B. organs
C. bones
D. organ systems
Answers
Answer: B. organs
Explanation:
Answer:
Explanation:
SPECIALIZED CELLS I got is wrong when I tried organs on my exam!!!!!!!!!!!
What are the four different types of deserts?
Answers
Answer:
Explanation:
Name Type of Desert Location
Antarctic Polar Antarctica
Arctic Polar Alaska, Canada, Greenland, Iceland
Sahara Subtropical Northern Africa
Answer:
1) hot and dry deserts or subtropical deserts
2) semi-arid deserts
3) coastal deserts
4) cold (or polar) deserts
1 and 2 pls!! Will give brainliest for the right answer:)
Answers
Answer:
1; b 2; a
Explanation:
Answer:
1.)c
2.)a
Explanation:
Neurons are categorized by the
A
direction in which they carry impulses.
B
amount of metabolic activity that takes place.
C
number of dendrites that branch out.
D
number of impulses that they carry.
Answers
Afferent neurons carry impulses from the tissue/organs to the brain. Efferent neurons carry impulses from the train out to efferent cells in the tissues.
Order the following words for Transcription
1 pre-mRNA
2.Gene
3 DNA
4mRNA
Answers
Answer:
2. Gene
3. DNA
1. Pre-mRNA
4. mRNA
Explanation:
Transcription is the first step of gene expression in which a DNA molecule serves as template for the synthesis of mRNA. In the process of transcription, a Gene present on the DNA molecule is transcribed by RNA polymerase using complementary base pairing rule.
After the gene is transcribed, a pre-mRNA is formed. This mRNA is so called because it is immature. The pre-mRNA undergoes processing such as polyadenylation, splicing etc. to become a mRNA.
Hence, based on this, the order is:
Gene → DNA → pre-mRNA → mRNA
A dog, Skipper, is roaming around the neighborhood. Skipper passes one of
his favorite spots and lifts his leg to urinate on a fire hydrant. Three
systems at work are:
Answers
Answer:
5. Muscular
6. Skeletal
12.Excretory
Explanation:
He lifts his leg, meaning his using skeletal and he is removing waste from his body using muscular & excretory.
Anyways, just wanted to let you I think you're in my class. We go to the same school. Have a great summer break !
type fghj in 3/7 block so i know you saw my message :)
DNA: TAC GCG TAC CGG ATC
mRNA:
Amino acids: HELP[
Answers
Answer:
AUG CGC AUG GCC UAG
Explanation:
Replace thymine (T) with uracil (U)
Can you please watch and answer how you feel after? Its about the ocean it a trick the human mind plays. It will be in the comments! Erase spaces!
Answers
Watch what..............??
Answer:
Sorry, what video? I don't see any video.
Explanation:
Anyways, the ocean is quite precious and there are many documentarys that show that. I love the marine life!
Help please someone please what is the answer
Answers
false
explanation:
acid rain is not acid precipitation
acid rain contains acidic substances which are dispersed into the atmosphere
while acid precipitation involves sleet, snow, fog and cloud vapor
acid rain is limited to a period of a year but acid precipitation happens all year
but it does cause chemical pollution due to the sulfur dioxide and nitrogen oxides are released in the air.
Explanation: falseeeeee
In which layer of the atmosphere does most condensation occur?
A) troposphere B) stratosphere C) ozone layer D) mesosphere E) ionosphere
Answers
Answer:
condensation occurs in the troposphere
if you had $5000 what would you do with it and why?
Answers
Answer:
pay off student loans
Explanation:
Answer:
I know some people are against this but I would get myself some hunting gear, put some money away for further things, get my favorite snacks, save for Christmas, and then I would put the rest towards my family's medical needs because my family means the world to me.
What percentage of DNA comes from
each parent during sexual reproduction?
Answers
Answer:
50 %
Explanation:
So, each sperm contains 50% of the father's genes and each egg contains 50% of the mother's genes. This makes gametes different from other cells in the body
Answer:
50 from each parent is the correct answer
how do i get rid of hicups?????
Answers
Answer:
just hold your breath for as long as you can
Explanation:
Answer:
Explanation:
Hold your breath and swallow three times.
Breathe into a paper bag but stop before you get lightheaded!
Drink a glass of water quickly.
Swallow a teaspoon of sugar.
Pull on your tongue.
Gargle with water.
i just asked go ogle :D
How do bacteria respond to their environment? Think back to how viruses mutate. What do you predict can happen to bacterial DNA?
Answers
Answer:
Well they respond pretty well to other environment and they adapt
Two distinct bands appear in a single lane at the completion of an SDS-PAGE analysis of an unknown protein. Select one: a. These bands represent two subunits of a homodimer. b. Each band represents a different sized subunit of a multimeric protein. c. Each band represents a protein subunit with different charge to mass ratio. d. These bands represent two subunits of a heterodimer. e. These bands represent two separate subunits of identical size.
Answers
Answer:
b. Each band represents a different-sized subunit of a multimeric protein.
Explanation:
SDS-PAGE analysis allows the separation and discrimination of proteins according to their molecular weight. The technique separates proteins in an electromagnetic field.
The SDS-PAGE technique makes proteins move in solid support -gel- by the action of the electric field. The distance reached by each protein is proportional to their molecular weight. The protein separation from a mixture results in bands that reflect their size.
SDS is a detergent that denaturalizes the protein and sets a relation charge size, such as that the motion of the protein in the gel is proportional to its weight. The bigger the protein is, the stronger interaction with the polyacrylamide gel there will be. The speed of displacement in the electromagnetic field is inversely proportional to the protein size.
Scientists have proposed more than two dozen ways to define species. One commonly used definition, called the biological species concept, holds that populations belong to the same species if they can contribute genes to a common gene pool. Reproductive barriers block gene flow between different species. Gene flow between populations tends to hold the gene pool of a species together. Three of the most prominent definitions of species are the biological species concept, the phylogenetic species concept, and the morphological species concept. For each characteristic, identify the a
Answers
Complete question:
Scientists have proposed more than two dozen ways to define species. One commonly used definition, called the biological species concept, holds that populations belong to the same species if they can contribute genes to a common gene pool. Reproductive barriers block gene flow between different species. Gene flow between populations tends to hold the gene pool of a species together.
Part A - Comparing species definitions
Three of the most prominent definitions of species are the biological species concept, the phylogenetic species concept, and the morphological species (morphospecies) concept.
Drag each characteristic to the appropriate bin based on the species concept(s) to which it applies → You will find this in the attached files
Answer:
Not applicable for extinct species → Biological Based on evolutionary history → Phylogenetic Relies on similarities in structure → Morphological Accommodates asexual reproduction / Species acceptance criteria can be subjective → Morphological and PhylogeneticUsed by scientists in classification → Morphological, Phylogenetic, and BiologicalExplanation:
The biological concept states that species are population groups that -in a real or potential way- can mate and reproduce, but are reproductively isolated from other groups.
Individuals belonging to a species cannot reproduce with members of other species.
This biological concept has limitations. Its application might present difficulties in concern with asexual reproduction species, such as bacteria, rotifer, cnidarians, plants, and etcetera.
Besides, this concept cannot be applied to the past because it is difficult to deduce reproductive capability between extinct species.
Finally, this concept is not adequate concerning hybridization zones, something to be expected considering evolutionary processes. This is the reason why it has been less accepted by botanists, as some plant species hybridize with other species.
The phylogenetic species concept defines species on a determined time and through time, and these are the horizontal and vertical species concepts, respectively. The species group is considered to be the less inclusive monophyletic group.
According to the phylogenetic concept, a species is a monophyletic group whose organisms share synapomorphies.
The establishment of species relies on molecular markers.
The morphological species concept defines species according to the shared morphological characteristics shared by all the members of the species. It is a descriptive method to separate species.
When a group differs considerably at a morphological level from another group, it is defined as a different species.
Some limitations might emerge from this species concept. It does not consider variability among individuals,
Individuals of the same species might be polymorphic, exhibiting morphological differences between organisms. These individuals would be considered to be different species following the morphological concept. Some different species might be morphologically similar, despite being different. These species might be considered as one following the morphological concept.Help please true or false
Answers
Answer:
false
Explanation:
because it's false
Answer:
The answer correct false called photosynthesis
What control mechanisms might prevent cells from producing too much of the amino acid glycine?
Answers
Which of the following is a natural process that can quickly put large amounts of gas and solid materials directly into the stratosphere?
A. an earthquake
B. a volcanic eruption
C. a landslide
D. a flood
Answers
What is the cell membrane so important?
A) Because only prokaryotes have it
B) Helps maintain homeostasis (Equilibrium) by regulating which materials enter and leave the cell
C0 It acts as a barrier between the inside of the cell and the outer environment.
Answers
the answer is B because ell membrane helps to maintain homeostasis
What kind of disorder might result from a DNA Mutation?
A. none of the above
B. A disorder caused by an event such as an accident
C. An infectious disease caused by a pathogen
D. An inherited genetic disease
Answers
Answer:
some well-known inherited genetic disorders include cystic fibrosis, sickle cell anemia, Tay-Sachs disease, phenylketonuria and color-blindness, among many others. All of these disorders are caused by the mutation of a single gene.
Explanation:
13 The environment can affect a person's health. Which of the following diseases
would be most adversely affected by cigarette smoke?
F emphysema and Parkinson's disease
Gasthma and gonorrhea
H asthma and Parkinson's disease
I emphysema and asthma
Answers
what did I do wrong?
what is the difference between elevation and altitude?
Answers
What percentage of the global water supply is fresh water? 6 percent 35 percent 1 percent 10 percent
Answers
Answer: i know it woluld be 48 because you add all the numnbers that you provided then you subtract it from 100 and get 48%
Explanation:
pls mark brainliest
Precipitation that does not permeate the ground runs off the surface quickly. It forms small streams that widen and become longer. Where does the water from these streams drain?
A. springs
B. wells
C. aquifers
D. rivers
Answers
Answer:
rivers because smaller bodies of water always drain into bigger ones
Which of the following correctly describes the effect of endocrine disrupters on humans?
a.
They destroy normal human hormones.
b.
They destroy cells that hormones would normally target.
c.
They prevent hormones from binding to the cells they target.
d.
They destroy endocrine glands that would normally release necessary hormones.
Answers
Answer: b
Explanation:
Explain the basic process of transcription. Include a description of the major intracellular structures involved.
Answers
Answer:
Transcription is the cellular process of RNA synthesis by decoding the information contained in a DNA fragment
Explanation:
Transcription is the process by which the genetic information contained in a fragment of DNA called 'gene' is used as a template to synthesize an RNA molecule, usually, a messenger RNA (mRNA), which is subsequently used to synthesize a protein by the process of translation. In eukaryotic organisms, transcription involves a DNA template strand, which contains both non-coding (i.e., promoter, introns) and conding (i.e, exons) regions, and an RNA polymerase that adds nucleotides to the growing RNA strand using as a template a DNA strand. Both in prokaryotes and eukaryotes, transcription occurs in three basic steps: 1-initiation, where DNA strands separate, 2- elongation, where the RNA polymerase moves on the DNA sequence to synthesize an RNA molecule, and 3-termination, where transcription terminates depending on the sequence in the RNA (eukaryotic transcription has an additional step known as RNA processing).
If a sample of DNA is 21% adenine, it would be % cytosine.
Answers
Answer: 28%
Explanation:
Use Chargaff's rules which states that 100% is total of all 4 bases and Adenine and Thymine need to have 1:1 ratio and Cytosine and Guanine need to have 1:1 ratio
21% Adenine and 21% Thymine
21% + 21% = 42 100 - 42 = 56 56 / 2 = 28
28% Cytosine and 28% Guanine
How do laws reduce air pollution?
Answers
Answer:
Laws reduce air pollution by a number of things, this could be by issuing a fine of about £20 or above. This is the most common way yet im sure in more serious cases prison sentences are issued.
Which of the following is NOT a function of an antibiotic?
A. targeting the ribosome that inhibits protein synthesis, causing the cell to not function correctly
B. attacking the mitochondria, inhibiting the production of sugars that give the cell energy
C. inhibiting the production of the cell wall and breaking down what is present
Answers
Answer:
B. attacking the mitochondria, inhibiting the production of sugars that give the cell energy
Explanation:
Antibiotics can't attack on the mitochondria of the cell because mitochondria provides energy to the cell. Mitochondria is also known as power house of the cell means that it provides energy to the cell in order to continue its activities. If antibiotic attack on mitochondria of the cell, the cell has no energy for performing its activities that leads to cell death so that's why we can say that antibiotic can't attack on the mitochondria of the cell.