Answer:
Spermatozoa: 23 chromatids
Ootid: 23 chromatids
Anaphase of mitosis: 92 chromatids
Oogonium prior to S phase: 46 chromatids
Explanation:
1) Spermatozoa, also known as sperm cell is a haploid gamete (n) that results from the meiotic division of a dipoid reproductive cell. Since there are 23 pairs of chromosomes or 46 chromosomes in human somatic cells, there will be 23 chromosomes in the spermatozoa. Also, meiotic division occurs twice and separates sister chromatids in meiosis II. Hence, spermatozoa will contain 23 chromosomes (n) with 1 chromosome each i.e. 23 chromatids
2) Ootid is a haploid cell that arises from the second meiotic division of a secondary oocyte. A primary oocyte, with 46 chromosomes/92 chromatids, undergoes meiosis I to produce secondary oocyte with 23 chromosome/46 chromatids, which in turn undergoes meiosis II to produce ootid with 23 chromosomes/23 chromatids (each chromatid is an individual chromosome).
3) Mitosis is the cell division that produces two identical diploid (2n) daughter cells. Note that, 46 chromosomes get replicated to form 92 chromatids. In the anaphase stage of mitosis, sister chromatids get pulled apart to opposite poles but still remain in the cell as cytokinesis is yet to occur.
4) Oogonium is the diploid (2n) cell that gives rise to primary oocyte via mitosis. Prior to the S phase where chromosomes replication occurs, Oogonium cell will contain 46 chromosomes and 46 chromatids.
8. The amount of energy the producers in this energy pyramid provide the primary
consumers is 54,000 joules. From this amount, 540 joules are provided to the tertiary
consumers. Based on this model, how much of the energy was provided to secondary
consumers?
Answer:
Energy provided to secondary consumers = 5,400
Explanation:
Given:
Primary consumers = 54,000 joules
Tertiary consumers = 540 joules
Find:
Energy provided to secondary consumers
Computation:
10 % energy is transfer to next user
So,
Primary consumers used 54,000 joules
So,
Energy provided to secondary consumers = 54,000 × 10%
Energy provided to secondary consumers = 5,400
Which statement describes the structure of lipids?
O composed of chains of monosaccharides
O composed of long chains of amino acids
O composed of single or double strands of nucleotides
O composed of a glycerol molecule bonded to fatty acid molecules
The statement which says that it is composed of a glycerol molecule bonded to fatty acid molecules, it is the glycerol molecule which holds up together the fatty acid molecules. The statement that is correct is option D.
What is the functional group in the fatty acid ?Fatty acid is the bio molecule in which the functional group is the carboxylic acid.
In molecule of the fats, the molecules of the fatty acids are linked to each of three of the carbons of the glycerol molecule with the ester bonds through oxygen atoms. While ester bond is forming on, 3 molecules are being released. Since the fats are consisted of three fatty acids with the glycerol but they are called as triacyl glycerol as well or the triglycerides.
A glycerol with the 3 fatty acids are attached with are referred as triglyceride , that is a sub constituent of the lipids or fat. It is formed from molecules of the glycerol with 3 fatty acids. The molecules of the triglycerides are main energy storing molecules of body of the animals that is mainly stored inside the adipose tissue.
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where would a pictograph not appear in a experimental outline
Answer:
somewhere on the outline
Answer:
Explanation:
Observations
How can a change to earth orbit affect earth climate apex
Answer:
Change over time
Explanation:
How do humans get carbon and how do we get rid of it?
Answer:
by breathing in..And breathing out.
Explanation:
our lungs take in oxegyn and breath out carbon dioxide
What might be the effects on iron deficiency?
The Scientific Method
Put these in order, top to bottom, from first in the process to last.
Investigation and Observations
Prediction
Summary
Hypothesis
Question
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Answer:
hey
Explanation:
as letters are to English language, blank is/are to genetic information
what is digestion??
Answer:
morjjhhhfligujcckgxjgxkgxgftixfjchkxdhshfzfyxkhgcgjf
The receptors on the ______ of a neuron receive(s) the transmitter released by other neurons.
Answer:
The receptors on the postsynaptic membrane (dendrites) of a neuron receive(s) the transmitter released by other neurons.
Explanation:
Neurons transmit nervous impulses. These cells are formed in general by a cellular body, dendrites and an axon. The dendrites are cytoplasmic extensions that receive stimuli from other cells. The axon is a long formation capable of conducting the electrochemical signals.
Every neuron forms connections with other neurons. These connections are known as synapsis. As it happens in every synapsis between neurons when a presynaptic neuron sends information, a neurotransmitter is released. This molecule is a chemical substance that travels through the synaptic cleft to the junctional area of the other neuron and binds to its receptors in the postsynaptic membrane, located in dendrites of the other neuron. This receptor is a protein structure that triggers an answer. The binding produces a depolarization of the cell called an excitatory postsynaptic potential. An action potential is initiated and spreads to the rest of the membrane depolarizing it. As long as the signal molecule is in the synaptic space, it keeps linking to its receptor and causing a postsynaptic answer. To stop this process, the neurotransmitter must be taken out from the synaptic space.
Compared with their counterparts in developed countries, individuals in developing nations typically have a
a
larger ecological footprint.
b
greater dependence on fossil fuels.
c
shorter life span.
d
higher standard of living.
Answer:b
Explanation:
What is the purpose of the EIS?
Answer:
Purpose of an EIS An Environmental Impact Statement (EIS) is a document prepared to describe the effects for proposed activities on the environment. "Environment," in this case, is defined as the natural and physical environment and the relationship of people with that environment
Explanation:
Which is an example of a herbivore?
A) fleas
B) hawks
C) bacteria
D) deer
Answer:
D
Explanation:
fleas feed on blood
bacteria eat decomposing flesh
hawks feed on rodents
Answer:
D) Deer
Explanation:
They eat plants
all organisms possess a genetic system based on what
Answer:
DNA
Explanation:
Deoxyribonucleic acid or DNA is defined as the genetic material in all the living organisms responsible for all the genetic activities in an organism.
DNA carries genetic instructions that are inherited from one generation to another generation. The DNA comprises of genes having specific genetic code that encodes the sequence of amino acid residues in proteins. DNA undergoes the process of replication and form several copies of it which are passed on to next generation.
Hence, the correct answer is "DNA".
All organisms possess a genetic system based on DNA as it is a hereditary material.
DNA is a hereditary material which is present in human beings as well as all other living organisms. Every cell which is present in an organism's body has DNA which is the same. Most of the DNA is situated in the cell's nucleus and small amount of it can be found in the cell's mitochondria as well.
Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.
As all genetic information is stored in DNA all genetic systems are based on DNA.
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4. CJ wanted to see if listening to music would make the basketball players make more baskets. On day one, he didn’t play any music and counted how many baskets they could make in 10 minutes. On day 2, he played rap music and counted the baskets, and on day 3, he played classical music and counted the baskets. a. Independent Variable (IV): _____________________________________________ b. Dependent Variable (DV): _____________________________________________ c. Control: ____________________________________________________________
Answer:
Independent variable- different kind of music played
Dependent variable- will listening to music make the players make more baskets?
Control- didnt play any music at all
Explanation:
CJ wanted to see if listening to music would make the basketball players make more baskets. Day 1, he didn't play any music and counted how many baskets they could make in 10 minutes. Day 2, he played rap music and counted the baskets. Day 3, he played classical music and counted the baskets.
What is independent variableThe Independent variable in above question is listing to music or not because it totally depend upon CJ that he is listing music or not.
Dependent variable
The dependent variable in above question is number of basket made by the players because it's totally depend on player that how much he want to made basket.
Controlled variable
The controlled variable in above question is 10 minute time period, players, height of the basket because it totally depend upon CJ that how much time they listen music and how he throw the basket so all above is controlled variable.
Therefore,CJ wanted to see if listening to music would make the basketball players make more baskets. Day 1, he didn't play any music and counted how many baskets they could make in 10 minutes. Day 2, he played rap music and counted the baskets. Day 3, he played classical music and counted the baskets.
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classifications of snail
J. J. Thomson concluded what from his experiment
Answer:
He discovered all atoms contain tiny negatively charged subatomic particles or electrons with cathode ray tubes.
Explanation:
What are five classes of protein found in prokaryotic cell membrane?
receptor proteins, transport proteins, resperatory proteins, binding proteins, attachment point proteins
Which state of matter will take both the volume and shape of the container that holds It?
Answer:
gases
Explanation:
in the gas phase the molecular forces are very weak
Traditional Chinese Medicine relied on the practice of___
which uses needles for pressing into pressure points on the body
Answer:
acupuncture
Explanation:
pretty much the definition of acupuncture. acupuncture was used and is used to today to heal and relax the body.
True or False? Fiber can reduce cholesterol levels and risk of heart attack, and can also prevent constipation.
how are saturated fats different from unsaturated fats
Answer:
Saturated fats have no double bonds in their chemical structure. They are “saturated” with hydrogen atoms. Because of their chemical structure, they have a solid consistency at room temperature. Unsaturated fats are typically liquid at room temperature. They differ from saturated fats in that their chemical structure contains one or more double bonds. They can be further categorized as: 3
Monounsaturated fats: This type of unsaturated fat contains only one double bond in its structure. Monounsaturated fats are typically liquid at room temperature and include canola oil and olive oil.
Polyunsaturated fats: This type of unsaturated fat contains two or more double bonds in their structure. They are liquid at room temperature. Polyunsaturated fats include safflower oil, sunflower oil, and corn oil.
Explanation:
Define monomer and polymer
Answer:
Monomer is a molecule that can be bonded to other identical molecules to form a polymer.
Polymer is a substance which has a molecular structure built up chiefly or completely from a large number of similar units bonded together
A monomer is a molecule that forms the basic unit for polymers, which are the building blocks of proteins
Polymer is a big molecule that forms from monomers, it consist of macromolecules (large molecules)
give any one adverse effecteffect of green house effects?
How many vowels does Appalachian have ?
Answer:
5
Explanation:
aeiou are vowels
Answer:
5
Explanation: AEIOU somtimes Y are vowels
What are observed and measured during an experiment; they are the experimental data
Answer:
Observation and measurements recorded during an experiment. All the variables that are kept the same throughout the experiment so they will not affect the results of the experiment. independent Variable. The variable which the experimenter changes so that he/she can observe the results of the experiment.
How MDMA affects the synapses in the brain
Answer:
MDMA affects the brain by increasing the activity of at least three neurotransmitters (the chemical messengers of brain cells): serotonin,89,90 dopamine, and norepinephrine.91 Like other amphetamines, MDMA enhances release of these neurotransmitters89–92 and/or blocks their reuptake,93,94 resulting in increased neurotransmitter levels within the synaptic cleft (the space between the neurons at a synapse).
Answer:
MDMA increases levels of these neurotransmitters within the synapse
Explanation:
tudy the graph above. What does the region labeled “A” represent? Question 2 options: Activation energy with a catalyst Energy of the products Activation energy without catalyst Reaction progress
Answer:
A. Activation energy with a catalyst
Answer:
A
Explanation:
Pill bugs are placed in a container where they have a choice of a wet or dry environment. researchers record how much time was spent on each side.
Answer:
This question is incomplete; the complete question is as follows:
Pillbugs are placed in a container where they have a choice of a wet or a dry environment. Researchers record how much time was spent on each side. What is the INDEPENDENT and DEPENDENT variables?
The independent variable is WET OR DRY ENVIRONMENT
The dependent variable is TIME SPENT
Explanation:
The independent variable in an experiment is the variable that the experimenter manipulates or changes in order to bring about an effect on the dependent variable.
Conversely, the dependent variable is the variable that the experimenter measures in an experiment. It is dependent on the independent variable.
In this question, the researchers placed pillbugs in containers that are either WET or DRY in order to measure how much time they spent in each side. Hence, the independent variable is the WET or DRY environment the pillbugs were placed because it is what the researcher changes while the dependent variable is the TIME SPENT because it is what the researchers measure.
How is mitochondrial DNA used in forensic science
The mitochondrial DNA team examines biological items of evidence from crime scenes to determine the mitochondrial DNA (mtDNA) sequence from samples such as hair, bones, and teeth. Typically, these items contain low concentrations of degraded DNA, making them unsuitable for nuclear DNA examinations.
Answer:
The mitochondrial DNA team examines biological items of evidence from crime scenes to determine the mitochondrial DNA (mtDNA) sequence from samples such as hair, bones, and teeth. Typically, these items contain low concentrations of degraded DNA, making them unsuitable for nuclear DNA examinations. Hope this helps