Help please and thank you
A student observes cell division in two different cells of a lily plant.
Cell A
germ cell in the anther of a lily
producing sperm cells
Cell B
cell in the root tip of an onion
producing root cells
What number of divisions does each cell undergo in a single cycle of cell division?
Cell A
Cell B
1
2
O
Cell A
Cell B
TIN
O
Cell A
Cell B
2
1
2
Cell A
Cell B
4
Answer:
Where I have used the term "chromosome complement," I am simply referring to the "complete" chromosome makeup of the nucleus of a cell in the flowering plant life cycle. The Merriam Webster Third New International Dictionary has many definitions for complement, but the one I am using is "the quantity or number required to fill a thing or make it complete." On the chromosome questions I want the "complete" chromosomes (represented by letters) for various cells and nuclei in the plant life cycle. For example, if ABCD refers to the chromosomes of an egg and abcd refers to the chromosomes of a sperm; then AaBbCcDd refers to the complete chromosomes of a fertilized egg or zygote (ABCD + abcd = AaBbCcDd). In a number of questions I have referred to the chromosome complement of a specific cell or nucleus, such as the zygote. In this case the chromosome complement of the zygote would be AaBbCcDd. The chromosome complement of the embryo would also be AaBbCcDd. Just think of the chromosome complement as the complete chromosome makeup of a cell where large and small case letters stand for the actual chromosomes. If there is one of each letter, then the cell is haploid (e.g. ABCD or abcd). If there are two of each letter, then the cell is diploid (e.g. AaBbCcDd). If there are three of each letter, then the cell is triploid (e.g. AAaBBbCCcDDd). If there are four of each letter, then the cell is tetraploid (e.g. AAaaBBbbCCccDDdd).
In the following questions, the term haploid (1n) refers to one set of chromosomes. This is typically the number of chromosomes found in the single nuclei of sex cells (gametes). In the flowering plant life cycle, this is also the chromosome number of the three nuclei within a germinated pollen grain (pollen tube) and the eight nuclei within an embryo sac. In plants, the haploid part of the life cycle is called the gametophyte. The normal haploid number for a human egg or sperm is 23 chromosomes (n = 23). The term diploid refers to two sets of chromosomes resulting from the union of the sperm and the egg. This is typically the number of chromosomes found in the nuclei of body cells (somatic cells) of a plant or animal. In plants, the diploid part of the life cycle is called the sporophyte. In a normal human, the diploid number is 46 chromosomes (2n = 46). The following link to life cycle patterns may be helpful in understanding the gametophyte and sporophyte parts of a life cycle. In the diagrams, everything above the red horizontal line is diploid (sporophyte) and everything below the red line is haploid (gametophyte). The terms sporophyte and gametophyte are used in the life cycles of plants, fungi and algae, but not animals.
HELP BIO
whichever lad/lass is right gets branliest and a light saber
Which phrase, if placed in box X, would correctly complete the flowchart shown below?
Decreased concentration of oxygen in leaf cells
Increased use of starch in root cells
Increased concentration of glucose in leaf cells
Decreased ATP in root cells
Answer: Increased concentration of glucose in leaf cells
Explanation:
Based off the flowchart, the process that it's describing is photosynthesis because during this process sunlight and CO2 are taken in by a plant to produce glucose. If we are exposed to sunlight and are increasing the use of CO2, then there must be a higher concentration of glucose in the leaf cells. Glucose is a product of photosynthesis.
Which of the following does not represent a condition required for natural selection to occur?
I NEEEDDDD HEEELPPPP PLEEEASEEE
Answer:3rd option
Explanation: Trust
Define the following :
-self-concept
-self motivation
-volunteer
-self-image
-Adolescents
Answer:
Self-concept is the set of ideas that make up the image that each person has about himself, that is, it is the opinion that an individual forges about himself. That sentence carries a certain value judgment. Self-concept: set of elements that a person uses to describe himself. Self-motivation is giving the reasons, the drive, the enthusiasm and the interest that provoke a specific action or a certain behavior. Volunteer is the person who, by his own choice, dedicates part of a part of his time to solidary, altruistic action, without receiving remuneration in return. The stage that comes after childhood and that ranges from puberty to the full development of the body is known as adolescence. Self-image is the value we have in relation to ourselves.
Explanation:
Self-concept: set of elements that a person uses to describe himself. The ability to motivate yourself is what is known as self-motivation. This is an important skill, as it encourages people to continue progressing even in the face of setbacks, to seize opportunities and to show commitment to what they want to achieve. Volunteer is that person who joins an organization in a free way to help altruistically in various social activities. When we speak of self-image we refer to the image that our subconscious has of ourselves. Adolescence is understood as the period of human development after childhood and before adulthood, in which the biological, sexual, social and psychological changes necessary to form a socially mature individual and physically prepared for reproduction take place.
Please answer quick!! Given the following template strand, write in the sequence of the complementary DNA
strand.
Template DNA strand:
TAC GAA GTC CCT TAG
Complementary DNA strand:
Answer:
ATG CTT CAG GGA ATC
Explanation:
Using Chargaff's rule:
A=T
G=C
You can find the DNA complentary strand
Which of these statements is true about internal respiration?
[a] Production of ATP
[b] Exchange of gases between the bloodstream and tissue cells
[c] Exchange of gases between alveoli and the bloodstream
[d] Breathing between the atmosphere and the alveoli
Answer:
c
Explanation:
because I don't know how to exam tho
Exchange of gases between alveoli and the bloodstream ( Option C )
Internal respiration is the process of exchanging gases ( i.e. carbon dioxide and oxygen ) between the bloodstream and the alveoli of an organism. as seen in human.
Internal respiration ( exchange of gases) occurs between Alveoli and the bloodstream. While External respiration occurs between the atmosphere and the alveoli.Also the Alveoli is important in both external and internal respiration. but for internal respiration, the alveoli exchanges gases with the bloodstream before it is passed to the internal issues .
Hence we can conclude that the true statement about internal respiration is ; Exchange of gases between the alveoli and the bloodstream.
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how are organisms classified into domains?
When the land or oceans are heated unevenly
form.
Answer:
What's your question?
Explanation:
Explain a situation in which a cell would need to use an input of energy to
transport materials across the cell membrane.
Use the following terms: Natural Selection, Variation, Mutation, Adaptation, Overproduction, Descent with Modification, Evolution, Population, Species, Heritability, and Fitness and show the relationship between them that lead to the result, Evolution.
Answer:
Variations in species led to evolution. Some species have desirable traits that are beneficial to their survival. Some species have undesirable traits that are not beneficial to their survival. E.g. peppered moths are not easily seen by predators because they camouflage with the bark, black moths are easily seen by predators so they are eaten. In the example mentioned, the peppered moths have a beneficial trait, this is also known as fitness, because the organism is fit for survival, unlike the black moths. Overtime the population of black moths decreases because they are not fit for survival, therefore the black moths cannot reproduce offspring that also have black wings. However, the population of peppered moths increases, because the peppered moths are able to reproduce offspring. Those offspring inherit their parents' traits, which make them have peppered wings too.
In which type of symbiotic relationship does one organism benefit and the other is neither helped nor harmed?
A. Competition
B. Commensalism
C. Mutualism
D. Parasitism
Answer:
Commensalism
Explanation:
Mutualism- both benefit
Parasitism- One benefits, the other is harmed
Competion- fite
Answer:
commensalism
Explanation:
just did the test
Chemicals used to kill insects and other pests that diminish crop yields are called
A) asbestos
B) pesticides
C) carbon sinks
D) myrmecophytes
E) carcinogens
Answer:
B) Pesticides
Explanation:
HELP! Information from dna is transcripted into__
Answer:
1) MRNA
2) Triplet code
3) Amino acid
4) protein
PLEASE ANSWER I WILL GIVE BRAINLIEST!!! If two babies both had red tails, would their genotypes for that trait have to be identical? Show the possible genotypes.
HELP PLEASE IM BEGGING YOU
Answer:
You have the right answer, its B.
Explanation:
Think of an object, person place at home that functions similar to the cytoplasm .
What two molecules are found in all three domains of life as an energy source and the genetic material?
1. ATP and glucose
2. DNA and atp
3. dna and rna
4. atp and glycolysis
Answer:
DNA and RNA
Explanation:
In humans, the "A" allele codes for Type A blood, the "B" allele codes for Type B blood, and the "o" allele codes for Type O blood. "A" and "B" are both dominant to "o." A and B are co-dominant to each other.
What is the probability of a Type AB parent and a Type O parent producing a Type AB child?
A. 50%
B. 25%
C. 0%
D. 100%
We learned that Robert Hooke named cells from the Latin, cella, which means "small room". Do you think Mr. Hooke was observing plant or animals cells when he named them? How do you know?
Answer:
Plant cells
Explanation:
Visually, plant cells are more rectangular and organized as compared to animal cells which are more diverse in shape. I hope this can help you!
How does population growth differ between developing countries and developed countries? What might account for these differences?
Answer:
Developing countries have a low life expectancy because things like water might be populated/scarce, the air may be polluted and immunisation might not be possible. But developed countries are more likely to have safe drinking water, and vaccines.
Please help on this one
Answer:
A. Class
Explanation:
As you look at Animal l column and Animal V column you can see their first difference appears in the class row.
The International Fisheries Commission was formed to:
A. Help conserve salmon
B. Control halibut fishing
C. Study fish biology
D. Develop new alternatives to trawl fishing
Answer:
B. Control halibut fishing
Explanation:
I hope that this helped you ;)
Answer:
B
Explanation:
Bc my test said so
How many anatomical characteristics do Cetaceans share with Mammals?
Answer:
Anatomy suggests that Cetaceans are more closely related to mammals than fish since they share more similarities with the mammals, such as a 4-chambered heart and lungs. What does anatomy say about the ancestry of Cetaceans?
Explanation:
Hope it helps! Correct me if I am wrong :>
Anatomy suggests that Cetaceans more closely resemble mammals. Cetaceans have a 4-chambered heart, lungs to breathe, giving birth to young ones, mammary glands, endothermic, etc.
What are Cetaceans?Cetaceans can be called aquatic mammals and it includes whales, dolphins, etc.
These are one of the most distinctive and highly specialized orders of mammals.
They are more likely to have anatomical characteristics of mammals than fish. As they have a 4-chambered heart, are endothermic, give birth to young ones, and have mammary glands, these are considered under mammals.
Thus, these are the characteristics that Cetaceans share with mammals.
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All of the following can take material into cells except
O active transport
O exocytosis
O endocytosis
O passive transport
Answer:
The correct answer is - exocytosis.
Explanation:
All of the given options of the transport mechanism are the transport of the substances either into the cell or out of the cell or both. Active transport is the transport mechanism that involves the transports of substances from the lower concentration region to the higher concentration region and utilize energy.
Endocytosis and exocytosis are the forms of active transport, however, endocytosis involves taking material into the cell and exocytosis out of the cell. Exocytosis is the form of active transport as it requires energy to moving materials from within a cell to the exterior of the cell.
Which of the following is true about cytokinesis in plant and animal cells
Which person is least likely to be concerned about potential long-term side
effects of genetically modified (GM) food?
A. A wealthy mother
B. The owner of an organic farm
C. A biology researcher
D. A child who is starving
HELP DUE IN 10 MINS!
Plants gather the sun’s energy with light-absorbing molecules called------such as ------
a. Chloroplasts, chlorophyll
b. Pigments, chlorophyll
c. Thylakoids, grana
Answer:
It's B; Pigments and Chlorophyll.
Hope you pass your assignment!
Answer:
b . pigments, chlorophyllWhich is NOT a function of the digestive system? *
Answer:
pump blood around the body
Explanation: The digestive system doesnt pump blood, but it does all the other ones.
Answer:
¨to rid the body of wastes¨.
Explanation:
also, if you get any wrong, press ¨view score¨ at the end, and then go back to the other tab and then press edit response. then you can see what ones you got wrong and keep doing that till you get 100% c: