True. Things such as a sponge, placozoa and stuff can be unicellular. But other bigger animals are multicellular, like a whale or dog.
Answer:true
Explanation:
how do scientists calibrate a molecular clock
Answer: mutations that natural selection can work on. 4.) How do scientists calibrate a molecular clock? ... they compare the number of positive mutations that have occurred in a particular species with the number of negative mutations that have occurred
Explanation:
. Occurs at the full and new Moon phases; Earth, Moon, and Sun are in alignment pulling the water in the same direction A spring tide B neap tide
How do
you
think
your
food sources
compare to the breakdown
Answer:
What we eat matters. The food choices we make every day have a big effect on the environment. The good news is that even small changes in what we buy and eat can add up to real environmental benefits, including fewer toxic chemicals, reduced global warming emissions, and preservation of our ocean resources.
Explanation:
The food choices we make every day have a big effect on the environment.
What are food sources?The good news is that even small changes in what we buy and eat can add up to real environmental benefits, including fewer toxic chemicals, reduced global warming emissions, and preservation of our ocean resources.
Some nutrients and dietary components are currently being underconsumed as a result of poor intakes of nutrient-dense meals and beverages from all food groups. The overall U.S. population is thought to be concerned about the dietary components calcium, potassium, dietary fiber, and vitamin D.
Examples of numerous nutrient-dense meals and drinks that are some of the best providers of these dietary components are given in the lists that follow.
These lists should be used by health practitioners to assist Americans identify the meals and drinks they like, those that reflect their cultural traditions and personal tastes, and those that also support their nutritional and food group needs.
Therefore, The food choices we make every day have a big effect on the environment.
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PLEASE answer all these questions if you can. 1 attempt for all
1.) Which of the following is true about prophase?
chromatin changes into chromosome form
all of the choice occur during prophase
chromosomes line up at the equator of the cell
cytokinesis occurs
2.) Which of the following is true about metaphase?
chromatin changes into chromosome form
chromosomes line up at the equator of the cell
all of the choice occur during metaphase
nucleolus disappears
3.) Which of the following describes the products of mitosis?
one cell identical to the parent
cell death
two unique cells
two daughter cells that have identical DNA to the parent
4.) What is the role of the spindle during cell division?
to separate the chromosomes
to break down the nuclear membrane
to divide the cell in half
to duplicate the DNA
5.) In what phase of mitosis are chromosomes first visible?
Interphase
Prophase
Telophase
Metaphase
6.) A centromere
holds two sister chromatids together
is an unduplicated chromosome
is half of a duplicated chromosome
forms the spindle fibers
7.) In which phase of meiosis would you see crossing over occur?
Anaphase I
Prophase I
Anaphase II
Prophase II
8.) Oogenesis produces __ viable cell/s, and spermatogenesis produces __ viable cell/s.
4, 2
4, 1
4, 4
1, 4
9) Haploid gametes produced in males are called sperm.
True
10.) Which of the following best describes a tetrad?
the spindle fibers at the end of telophase I
the four cells resulting from meiosis
homologous chromosomes during prophase I
tetrads are not present in meiosis, they are present mitosis
False
Answer:
1. a
2. b
3. d
4. a
5. b
6. d
7.b
8. im not sure abt this one, sry :(
9. yeah, true
10. c
Explanation:
Pro phase is the starting stage of the division where the cell division begins. Spindle fibers are broken into half and the type of division that is present in gametes is reduction division that is the meiosis. Synapsis occurs during mitosis.
What is synapsis ?It is defined as the stage in which the pairing of the homologous chromosomes take place.
Chromosomes do not line at the equator as the lining of the chromosomes at the equator occurs on the stage of mitosis where it is possible to see the V,J and L shapes of the paired chromosomes. After this stage the exchange of genetic material takes place.Chromatin do not change into chromosomes in the metaphase.
Mitosis is present only to make the duplicate copies of the cell. The identical daughter cells are made when the division of mitosis is taking place in the cell. Chromosomes are first visible in the prophase. A centromere holds two sister chromatids together.
In meiosis crossing over takes place in anaphase 1.
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In cats, the allele for black coat color is dominant over the allele for white coat color. If a white cat crossed with a heterozygous cat, what is the expected genotypic ratio? *
10 points
4BB : 0Bb : 0bb
2BB : 2Bb: 0bb
0BB : 2Bb: 2bb
0BB: 0Bb: 4bb
PLEASEEEEEEEEEEEEEEEE HELPPPPPPPPP
1. Describe the possible fates of blood lactate? (4 mrks)
2. Does gender affect the levels of lactate? If so, Why? (4mrks)
Answer:
1)When the oxygen level is low, carbohydrates break down for energy and produce lactic acid. Lactic acid levels rise with strenuous exercise or other conditions - such as heart failure, severe infection (sepsis), or shock - which reduces the flow of blood and oxygen throughout the body.
2) no gender differences in resting or peak blood lactate concentrations, nor in the rate of blood lactate removal of young adult men and women with similar aerobic fitness level expressed as ml.kg FFW1
Explanation:
..
Which two organs can both chemical and mechanical digestion take place?
A: Esophagus, Mouth
B: Mouth, Stomach
C: Small Intestine, Liver
D: Large Intestine, Stomach
Explain why there is such a large difference between the amount of protein
found in the plasma of the glomerulus and the amount of protein found in the
filtrate.
What is a cell, and how do you know ?
Answer:
The cell is the basic unit of life. Some organisms are made up of a single cell, like bacteria, while others are made up of trillions of cells. Human beings are made up of cells.
Explanation:
Answer:
Cell is the smallest structure,function and morphological units of living Organisms.
how do I know: from my biology teacher.❤❤
hope it's helpful ❤❤❤❤.
THANK YOU.
Which factors below do NOT influence how much energy a person needs.
Answer:
hair color
Explanation:
it doesn't come hafter about the color b
1. Choose the items that are Inferential Statistics. (Check all that apply)
Give the likelihood of data occurring by chance
Include the mean
Summarize the data
Tell you whether to call your mother about your results
Give a measure of statistical significance
Answer:
A, D, and E is correct
Explanation: I took the test and got this one correct.
The items that are inferential statistics among the options would be:
Give the likelihood of data occurring by chanceTell you whether to call your mother about your resultsGive a measure of statistical significanceThis is largely due to the fact that inferential statistics refer to the branch of statistics that draws conclusions from a set of data. It is as opposed to descriptive statistics which focus on summarizing, describing, arranging, and or categorizing data in such a way that trends are shown at a glance.
Statistical parameters such as mean, mode, and median only measures attributes of data relating to the measure of central tendencies. Data summary is purely descriptiveHence, the items selected are those that are conclusive and not descriptive.
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what does cellular respiration require
Answer:
Cellular respiration is the cellular process which transfers chemical energy from glucose to ATP.
Explanation:
Oxygen is essential to have efficient cellular respiration; most organisms need oxygen for a single purpose: to release energy from food for use by cells.
If your givens are: m= 32 kg, h= 73 m, g= 9.82 m/s^2, what is the Potential
Energy?
Answer:
potential energy=mgh=32×9.82×73=29939.52joule
What are the products of photosynthesis? .-.
Answer:
products of photosynthesis are glucose and oxygen
If a cell has 14 chromosomes, how many chromosomes will each daughter cell have after mitosis and cytokinesis?
Why is this important?
Answer: After mitiosis, each daughter cell will also have 12 chromosomes. Cytokinesis is just the last stage of telophase, where the cell completely forms the two daughter cells. Telophase does not form chromosomes.
Explanation:
If a cell has 14 chromosomes, there are 14 chromosomes in each daughter cell.
What happens in Mitosis?There are four stages of mitosis: prophase, metaphase, anaphase and telophase.
1) Prophase: chromatin into chromosomes, the nuclear envelope break down, chromosomes attach to spindle fibres by their centromeres.
2) Metaphase: chromosomes line up along the metaphase plate (centre of the cell)
3) Anaphase: sister chromatids are pulled to opposite poles of the cell
4) Telophase: nuclear envelope reforms, chromosomes unfold into chromatin, cytokinesis can begin.
If a cell has 14 chromosomes, there are 14 chromosomes in each daughter cell.
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Which animal has a bilaterally symmetrical body plan?
A jellyfish.
A lobster.
Coral.
Which statement best compares the aorta and the pulmonary vein?
O Both structures control the flow of blood.
O Both structures are involved in transporting oxygenated blood.
O Both structures separate the left and right atrium.
O Both structures carry plasma back into general circulation.
Answer:
Both structures are involved in transporting oxygenated blood.
Explanation:
Edge 2021
during DNA replication, what unzips the DNA ?
A.mutagens
B.RNA
C.chromosomes
D.proteins
Answer:
Proteins
Explanation:
Helicases are enzymes that bind and may even remodel nucleic acid or nucleic acid protein complexes. There are DNA and RNA helicases. DNA helicases are essential during DNA replication because they separate double-stranded DNA into single strands allowing each strand to be copied.
Will Give Brainliest
Which of the following events would most likely contribute to lowering the carrying capacity of a population?
A.
an increase in the water supply in the habitat
B.
a decrease in habitats due to human development or natural disasters
C.
an increase in the number of predators who eat the animal
D.
a decrease in the number of females in the population
Answer:
a decrease in habitats due to human development or natural disasters
Explanation:
its right and brainliest
Answer:
For the other person to get Brainliest
do you think it's possible to bring to life extinct animals from fossils? How do you think that would affect organism that exist today?
Answer:
Answer: Extinct Animals could become invasive, spread disease, outcompete important species, and have unknown effects on the ecosystem.
Marc and Dan are twins who like the same activities, and foods. At a recent doctor's appointment, Dan was told that he has type 2 diabetes. He has been feeling good and has not noticed any changes in his health. He does not understand why he has diabetes but this brother does not and why he has not had any noticeable symptoms. How would you explain this to him? Describe what the glycemic index is and how this is very important in developing a nutritional diet.
Answer:
The glycemic index allows people with diabetes to follow a balanced diet by consuming foods with a low glycemic index, which helps to avoid increasing the level of sugar in the blood.
Explanation:
The glycemic index is important to know when a certain food raises the level of sugar in the blood.
A good diet for people with diabetes is determined by foods that have a low glycemic index between 1 to 55; Some of the foods that can help us regulate the level of sugar in the blood are the following:
- Breads and cereals that are exclusively whole grains.
-Legumes like beans and lentils.
-Fruits such as: peach, pear, apples, cherries and prunes.
What are the two alleles for tongue rolling?
The stage in the cell cycle where cells spend the majority of their life.
Answer:
interphase
Explanation:
In cells, this busy stage of “living” is called interphase. Interphase is part of a cyclical growth process in all cells called the cell cycle. An average eukaryotic cell spends most of its life in the interphase part of the cell cycle, around 90% of its time, to be precise
Does DNA in prokaryotes and eukaryotes use the same nitrogenous base pairs?
Answer:
Ukaryotes consist of membrane bound nucleus whereas prokaryotes lack a membranebound nucleus.
Explanation:
Ukaryotes consist of membrane bound nucleus whereas prokaryotes lack a membranebound nucleus. Prokaryotic DNA is doublestranded and circular. ... The main difference between prokaryotic and eukaryotic DNA is that prokaryotic DNA is found in the cytoplasm whereas eukaryotic DNA is packed into the nucleus of the cell.
No, DNA in prokaryotes and eukaryotes does not use the same nitrogenous base pairs.
What is DNA?Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.
Moreover, deoxyribonucleic acid (DNA) is a molecule that contains the biological instructions that make each species unique. DNA, along with the instructions it contains, is passed from adult organisms to their offspring during reproduction.
Therefore, in all living things, DNA is essential for inheritance, coding for proteins, and providing instructions for life and its processes. DNA dictates how a human or animal develops and reproduces, and eventually dies.
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Describe how ions, water and sugar are obtained and
transported through plants.
6 mark
Answer:
Water and ions are obtained from soil and glucose is obtained from leaves.
Explanation:
Water and ions are absorbed by the plant through roots from the soil whereas glucose is produced in the leaves during the process of photosynthesis. Vascular bundles such as xylem and phloem transported water, ions and glucose within the body. Xylem moves water from roots to the upper water of plants such as leaves, stem etc whereas phloem transported glucose from leaves to other parts of plant.
Which phrases best identify characteristics of asexual reproduction?
Answer:
C. One parent, NO union of gametes, offspring genetically identical
Explanation:
This is only true for Asexual Reproduction. There is one parent only, no union of gametes, and the offspring is completely identical to the parent.
Hope it helps!
In the overall equation for photosynthesis, six molecules of carbon dioxide results in six molecules of
Answer:
Glucose,
Explanation:
6 molecules of carbon dioxide are required, one of each carbon atom is glucose
Does a particle of a liquid or particle of a gas have more kinetic energy
Answer:
Liquid because it's always moving somehow, so the particles have more kinetic energy
A semi-permeable cell membrane is most like a A college professor in a lecture. B small child in a high-chair. C bouncer at a club. D soldier in battle.
Answer: C
bouncer at a club.
Explanation: i did on flocabulary
Which molecule never moves across a biological membrane to any other locations in a cell?
Molecules that cannot easily pass through the bilayer include ions and small hydrophilic molecules, such as glucose, and Macromolecules, including proteins and RNA.
