Answer:
C
Explanation:
Q. Which one of the following properties does NOT give the water the ability to become a suitable medium for chemical reactions?
a. Helps the ionization of salts
b. It is considered a good solvent for salts
C. Gives off the heat produced from the chemical reactions
d. It has a specific heat capacity.
Answer: it is third one i guess
Explanation:
When the dry-bulb temperature is 22°C and the wet-bulb temperature is 13°C, the relative
humidity is
1. 10%
2. 33%
3. 41%
4. 59%
Answer:
33 percent is wright
hope it may help you
3 Peroxisomes are cellular organelles: A. with their own genome B. present only in protists C. without membrane OR D. collaborating with the nucleus O E site of some oxidation reactions
Answer:
E.site of some oxidation reactions
6. The probability that the two offspring you produced share every genotype in common is extremely low. Explain why they are likely to be different.
Answer:
Sexual reproduction is able to generate genetic variation in offspring by 1-independent assortment and 2-recombination during meiosis, and 3-random fertilization.
Explanation:
Sexual reproduction is a type of reproduction that increases the amount of genetic variation in offspring by three main mechanisms: independent assortment of homologous chromosome pairs and recombination during meiosis, and random union of gametes during fertilization. First, sexual reproduction is associated with the independent assortment of chromosomes during meiosis, i.e., the orientation of homologous chromosome pairs is a random process that is different for every cell that undergoes meiosis. In consequence, chromosomes assort randomly into gametes, thereby the segregation of alleles of a gene pair is independent of the segregation of another set of alleles of a different gene (as stated in the law of independent assortment). Second, sexual reproduction generates genetic variation by recombination, which is the exchange of genetic material between non-sister chromatids during meiosis I (prophase I). This genetic process (recombination) is able to generate new alleles in offspring. Third, sexual reproduction also involves the random union of two haploids (n) gametes during fertilization, which results in the formation of a diploid (2n) zygote that develops into a new individual. In humans, the sperm cell has 8 million possible (2²³) chromosome combinations, which fertilizes an ovum cell that also has approximately 8 million chromosome combinations, thereby producing a tremendous genetic variation in offspring (around 64 trillion possible zygote combinations).
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BIOL-041-CR: Biology, Part 1 / Unit 1: Biology: The Study of Life /12: Cha
3. What is the name of the process whereby some organisms are able to keep their internal conditions suitable for living?
homeostasis
O reproduction
Ο Ο Ο Ο
O photosynthesis
O metabolism
4. In order to keep a steady population, animals in a population must reproduce at a rate that is at least equal to
O the rate of deaths
twice the number of births from the previous year
O the current population
O half the number of deaths
Answer:
3) homeostasis
Explanation:
is the process where by some oranism keep their internal conditions suitable for living
For each function listed below, name the associated structure: Function Structure Rigid cellular support __________________ Flexible cellular boundary __________________ Site of cellular respiration* __________________ Site of photosynthesis
Answer:
cell wall
mitochondria
chloroplast
The cell membrane is a flexible cellular boundary, respiration takes place in mitochondria, and photosynthesis in the chloroplast.
What are cellular organelles?An organelle is a subcellular structure that, like an organ in the body, has one or more specific tasks to carry out within the cell. The nucleus, which houses genetic material, the mitochondria, which generate chemical energy, and the ribosomes, which put together proteins, are some of the more significant cell organelles.
The nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, vesicles, and vacuoles are among the organelles found in animal cells. Despite not being protected by a membrane, ribosomes are frequently referred to as organelles in eukaryotic cells.
Thus, the cell is covered by a flexible cell membrane. Mitochondria is a site of cellular respiration, while chloroplast is a site of photosynthesis.
Learn more about cellular organelles, here:
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One of the livers main functions is to detoxify potentially toxic substances. Which organelle would you expect liver cells to have in abundance?
liver contain abundance of smooth endoplasmic reticulum
Select all of the characteristic monosaccharide features that are absent in this molecule: H O H CO о -C-H H-C -O CH H-C- -O H H-C-H H
Answer:
Carboxyl functional group.
Explanation:
Carboxyl functional group is the feature or characteristic which us absent in the monosaccharide. The carboxyl group is an organic, functional group comprising of a carbon atom which is double-bonded to an oxygen atom and have singly bond with a hydroxyl group. In other words we can say that it is a carbonyl group (C=O) that has a hydroxyl group (O-H) which is attached to the carbon atom.
5. Shawn has a hypothesis that fungicides harm bee development. Using what you now know, describe an experiment to test Shawn’s hypothesis. Be sure your response includes what data should be collected and how you would collect it.
Answer:
Yes.
Explanation:
Yes, the fungicides harm bee development by causing changes in behavior, immune health, and reproduction etc. For verifying this hypothesis, we have to take two environments, in one environment fungicides are applied to the plants while on the other environment, there is no fungicide applied to the plants. Th result shows that the bees are affected and act abnormal where fungicides are applied as compared to those bees which are normal in behaviour and other features.
the prime mover of inspiration is the blank during normal quiet breathing expiration is a passive process as this muscle relaxes into its original dome shape. provide conditions when expiration becomes an active process or forced. explain
Answer:
The prime agonist of inspiration is the diaphragm muscle.
The conditions when expiration becomes an active process is : Emphysema, Pneumonia, Bronchitis.
-Expiration is the passive process as there is elastic recoil of lungs following inspiration without contraction of any muscles.
-The elastic fibers in alveoli are damages or filled with mucus and fluid in the disease such as conditions such as emphysema or pneumonia.
-Elastic recoil of lungs.
-Hence, muscle contraction is required to forcefully exhale the air from lungs. Internal intercostal muscles contract to pull the ribs downward and remove air from the lungs.
Outermost layer of virion fullfills which of the following functions maturation biosynthesis release attachment
Match the rocks with the geological processes that create them.
igneous rocks
sedimentary rocks
metamorphic rocks
They are formed when liquid
magma cools and solidifles
beneath or above Earth's
surface.
They are molded by heat and
pressure deep inside Earth.
The heat comes from magma.
Pressure is exerted by the
motion of Earth's plates and
the weight of other rocks.
They are a result of weathering
and lithification, which is often
aided by the flow of water.
Answer:
Igneous rocks:
-They are formed when liquid magma cools and solidifies beneath or above Earth’s surface.
Sedimentary rocks:
-They are a result if weathering and lithification, which is often aided by the flow of water.
Metamorphic rocks:
-They are molded by heat and pressure deep inside Earth.
-The heat comes from magma.
-Pressure is exerted by the motion of Earth’s plates and the weight of other rocks.
Explanation:
These are all I can do. You gave 5 sentence choices right? Hope this helps!
Answer:
The answer is Igneous rocks, Metamorphic rocks, and Sedimentary rocks
Explanation:
When blood pH becomes overly acidic, respiration and kidney function change to bring the acidity back to its normal pH level of 7.4. What does this process best exemplify
Answer:
homeostasis
Explanation:
Homeostasis has to do with processes that maintain the internal balance within an organism. It can succinctly be defined as the process of regulating an organism's internal environment. The process of homeostasis is very important in the maintenance of important indicators of balance in the body such as body temperature, body pH, etc.
Hence, when blood pH becomes overly acidic, respiration and kidney function change to bring the acidity back to its normal pH level of 7.4. This is a homeostatic response.
11.
The temperature of a body of water influences
vegetation patterns
global warming
the formation of deserts
the temperature of the air above it
Methylene blue can be used to stain DNA because it: (2 pts) forms ionic bonds with DNA changes the pH and therefore the structure of DNA makes DNA electron dense is an effective chemical fixative for cells is none of the above
Answer: Methylene blue can be used to stain DNA of a cell because it (forms ionic bonds with DNA).
Explanation:
To examine the components of a cell usually under a microscope, a stain or dye is being used to provide a clear and defined view of the area under study.
The deoxyribonucleic acid (DNA) of a cell which contains the hereditary information of the cell is located in the nucleus.
Methylene blue is a type of stain used by biologists which helps them view microscopic life in brilliant color. It is a cationic stain (positively charged blue dye); and binds to negatively charged parts of the cells, such as nucleus (DNA) and RNA in the cytoplasm (with lower affinity).
When DNA of a cell comes in contact with methylene blue on a slide, their opposite charges attract, causing methylene blue's "rings" to slide in between the "rungs" of the DNA "ladder." As a result, a rich blue stain that identifies the location of the cell nucleus can be observed. This produces a photosensitive reaction which can then be viewed under the microscope.
Therefore is can be used to stain the DNA of cell because it forms ionic bonds with DNA.
Question 9
What is the main difference between a prokaryote and eukaryote cell?
Answers:
The presence of a cell wall
The presence of genomic DNA
The absence of genomic DNA
Crossing over
The absence of a cell wall
Question 10
Answer:
Crossing over
Explanation:
Prokaryotic cells are cells that do not possess a membrane bound nucleus to house their genetic material e.g bacteria while eukaryotic cells possess a membrane bound nucleus that houses their genetic material e.g plants.
One important characteristics of prokaryotic cells is that they do not undergo any form of sexual reproduction, hence, cannot undergo MEIOSIS, which only occurs in sexual reproducing organisms. Prokaryotes reproduce asexually by binary fission.
Crossing over is a unique process that only occurs during meiosis. Since prokaryotic cells do not undergo meiosis, this means that crossing over is the difference between prokaryotic cells and eukaryotic cells in this question.
QUESTION 8
Which of the following occurs during cell division in prokaryotes?
Answers pick one:
Spindle fiber attachment
DNA replication
Histone production
All of the above
None of the aboveا
Answer:
Explanation:
Prokaryotes are single cell organisms, including bacteria, which divides through binary fission where the daughter cell is a complete replica of the father cell.
Eukaryotes are multi-cell organism, which reproduce either through mitosis or meoisis. Meoisis is sexual reproduction while mitosis is asexual reproduction
A reproductive cell must differ from other normal body cells. The reproductive cell must ______________ because it will soon fuse with another reproductive cell to form a new individual
I'm not 100% sure what the exact answer is to this, because lots of things could be said about what gametes need to do for reproduction.
I suppose since it says that it's combining with another cell, it's hinting at the fact that reproductive cells are haploid.
If this is multiple choice I would choose the choice that has to do with gametes being haploid.
A reproductive cell must differ from other normal body. The reproductive cell must Haploid because it will soon fuse with another reproductive cell to form a new individual.
How is a reproductive cell specialized?The requires the union of two specialized cells, called gametes, each of which contains one set of chromosomes.
Thus, haploid is the answer.
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Why do you think so many people seem to not care about the environmental issues we are facing?
Answer:
People are not aware of their causes and impacts.
Explanation:
First, people just seem to think that a little bit of harm won't impact the world at all, but that little bit for everyone adds up and the magnitude is a lot worse than people would imagine. Next, even if they/we do know the scale, they don't know how to help or are not interested enough to try and fix the problem. We all think that we won't be able to help enough to fix the issue.
When body temperature increases, thermoreceptors are stimulated and send nerve signals to the CNS. The CNS sends motor signals to sweat glands, which attempt to reduce body temperature. This is an example of a __________ reflex.a. organ.b. stretch.c. withdrawal.d. visceral.
Answer:
d. visceral.
Explanation:
The visceral reflex is one that happens autonomously in the body, aiming to maintain the balance of the body through quick responses to some specific impulses. An example of a visceral reflex is the reduction in body temperature with the release of sweat from the sweat glands.
The visceral reflexes are controlled by the autonomic nervous system, using the sympathetic and parasympathetic nervous system.
130 and 14C are isotopes of 12C, which has 6 electrons, 6 protons, and 6 neutrons. What is the arrangement of subatomic particles in 14c?
A. 6 electrons, 7 protons, and 6 neutrons.
The correct answer is C. 6 electrons, 6 protons, and 8 neutrons.
Explanation
An isotope is a type of atom that is characterized by having a nucleus with a different number of neutrons. Additionally, isotope atoms are those that have the same number of protons in the nucleus (in the case of carbon 6 protons), but different mass numbers. In the case of the isotope of carbon, it has 8 neutrons (2 more neutrons than the regular carbon) and 6 protons in the nucleus, that is, that its mass is 14 (6 protons + 8 neutrons equals 14). According to the above, the correct answer is C.
8. Two rabbits are bred together. One is heterozygous for agouti coat
(genotype: Cch) and the other is albino. What are the possible phenotypes
of their offspring? Construct a Punnett square to support your answer.
Answer:
- Parental cross = Cch x chch
- F1 = 1/2 Cch (agouti coat); 1/2 chch (albino coat) >> 1:1 phenotypic ratio
Punnett square:
ch ch
C Cch Cch
ch chch chch
Explanation:
A heterozygous individual is an individual who has two different gene variants (i.e., alleles) at a particular locus. In this case, individuals having the "agouti coat" trait are heterozygous carrying both 'C' and 'ch' alleles. On the other hand, a homo-zygous individual has the same allele at a given locus (here, the 'chch' genotype associated with the albino phenotype). Therefore, as observed in the Punnett Square above, when a heterozygous parent is crossed with a homo-zygous recessive parent for a single gene, alleles segregate in the gametes of both parents so an expected 1:1 phenotypic ratio will be observed.
Why do scientists study seismographs?
To analyse mineral content from earth's crust
Answer:
To determine the location of an epicenter
Explanation:
A seismogram is a graph output by a seismograph ; a record of the shaking and vibration of the ground. By studying seismograms, scientists learn a lot about Earth's internal structure, like how fast the waves are moving and what type of material the waves are passing through.
You isolate a variant of the Hfr parent in question 6 that only shows recombination of the his+ and trp+ genes. The cross was ( HFR lac+, gal+, trp+, his+, strr X F- lac-, gal-, trp-, his-, strs ). This strain most likely:_________.
a. Contains an F' his+ trp
b. Has become F-
c. Contains an Hfr translocation
d. No longer mates as a merry diploid
e. Not enough information is given
Answer:
The correct answer is - b. has become F-.
Explanation:
In the case of the cross of two different strains, some genetic material moves to the F- strain from the Hfr strain, but due to genome size, it's not possible that all the genes can pass into a single bacterium.
Instead of complete transfer, each individual F- cell gets a different and random subset of genes from the Hfr. There is no translocation and F' does not contain his+ trp+.
Vasopressin works on
Answer:
To treat diabetes insipidus, which is caused by a lack of this naturally occurring pituitary hormone in the body. And used to treat or prevent certain conditions of the stomach after surgery or during abdominal x-rays.
What is the role of the spindle fibers in mitosis?
Answer:
Spindle fibers are a type of protein that splits a cell's genetic material. During both kinds of nuclear division, mitosis and meiosis, the spindle is required to evenly divide the chromosomes in a mother cell into two daughter cells. The spindle fibers are referred to as the mitotic spindle during mitosis.
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HOPE IT HELP.....
HAVE A GREAT DAY!!
Review Questions
1. If a diploid eukaryotic cell contains 14 pairs of chromosomes for a total of 2n = 28, how
many chromosomes will be in the resulting products of cellular division if the cell
undergoes: mitosis?meiosis?
2. If a haploid eukaryotic cell contains 10 chromosomes for a total of n = 10. How many
chromosomes will be in the resulting daughter cells if this cell undergoes mitosis?
3. By what process do homologous chromosomes exchange portions of their DNA during
meiosis?
4. In what phase does the answer to #3 occur?
5. How many mature ova will be produced from each primary oocyte?
6. How many mature sperm will be produced from each primary spermatocyte?
7. Do the homologous chromosomes separate during meiosis I or meiosis II?
8. Do the sister chromatids separate during meiosis I or meiosis II?
9. What is a polar body?
10. List the phases of mitosis and briefly describe what happens in each phase:
Answer:
6==. During spermatogenesis, four sperm result from each primary spermatocyte, which divides into two haploid secondary spermatocytes; these cells will go through a second meiotic division to produce four spermatids
Why does water stop traveling through the soil and remain in an aquifer?
Answer:
Water remains in an aquifer because it has met up with an impermiable layer of clay or rock.
9.
I've been called the storage tank
By those with little taste
I'm a sack filled with water,
Food, enzymes, and waste
What am I?
A)Golgi Body (Complex)
B)Endoplasmic Reticulum
C)Nucleus
D)Ribosomes
E)Cell membrane
F)Cell wall
G)Vacuole
H)Lysosomes
I)Vesicles
J)Chloroplast
K)Chromosomes
L)Mitocondria
Answer: G)Vacuole
Explanation:
G)Vacuole is the answer. Hope this helps!
What is rcbL, and why is it a particularly useful molecule for studying evolutionary relationships in plants and green algae
Answer:
RBCL denotes for 'rubisco protein.' It is characterized as 'a plant enzyme which catalyzes both the fixing of carbon dioxide found in atmosphere during photosynthesis and the reverse process of photorespiration.' It plays a very significant role in studying, as well as, in evaluating relations associated with phylogenetics in plants primarily along with green algae as it assists them to produce energy molecules by using carbon dioxide from the atmosphere. It has therefore been the key factor behind a number of organic carbon that is discovered in our surrounding biosphere.
