Answer:
DNA
Explanation:
Choose the correct statements 1.Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. 2.Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species. 3cross-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. 4.Self-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.
Answer: The correct statements are 1 and 2:
1.Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant.
2.Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.
Explanation:
Pollination is the transfer of pollen grains from an anthers to a receptive stigma. In most species of flowering plants, external agents bring about pollination. Also, flowers have evolved special structures and mechanisms to ensure successful pollination.
There are two types of pollination
--> Self pollination: This takes place when mature pollen grains from the anther of a flower fall on the stigma of the same flower or that of another flower on the same plant. This type of pollination brings the male gametes and egg cells of the same plant together. The resultant offspring show very little genetic variation.
--> Cross pollination: This occurs when mature pollen grains of a flower are transferred to the stigma of a flower of another plant of the same or closely related species. This brings the male gametes and egg cells of two different parent plants together. Therefore, there is greater genetic variation among the offspring.
True or false?
Submersibles make it possible for scientists to collect data from areas of the ocean that were previously unreachable.
Answer:
The answer is true :)
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Much love <3
Explanation:
WILL GIVE BRAINLIEST
who adapts, the population or individual
Answer:
to be honest i think the answer is the population
Explanation:
Answer:
Populations evolve through a process known as natural selection which allows individuals with beneficial traits for survival to breeding with other individuals who share those traits, eventually leading to offspring who only exhibit those superior traits.
Explanation:
Which of the following terms would Bb
represent in an organism?
A. phenotype
B. genotype
C. genetics
Why is it so important for us to decrease our use of fossil fuels?
A. The combustion of fossil fuels are causing a hole in the Ozone layer
B. The combustion of fossil fuels leads to an increase in atmospheric CO2 which leads to global climate change
C. The combustion of fossil fuels help us meet our energy demands, so it is not that important that we switch to alternatives.
D. Fossil Fuels do not harm the environment, but we are running out of them so we need alternatives.
help me please please
Answer: it
Explanation: I know
Answer:
B.
Explanation:
Fossil fuels definitely harm the environment, and their supply is depleting. So that takes out answers C and D, leaving A and B. The main cause of ozone depletion and the ozone hole is manufactured chemicals being released into the air. While CO2 from fossil fuels does have an effect on worsening the hole, it has a much higher effect on global climate change.
two multipule choich questions
Answer:
B. Attach to a host cell
A.
Explanation:
Part C-Answer true or false:
a. If a plant cell is placed in a salt solution, the central vacuole will shrink
b. If a red blood cell is placed in distilled water, it will shrink
c. If a plant cell is placed in distilled water, the cell membrane will move away from the cell wall
d. If a red blood cell is placed in a salt solution, the salt will enter the cells, giving them a strange appearance
LOOK AT ATTACHED PHOTO FOR QUESTION! WILL GIVE BRAINLIEST.
Please correct me if I am wrong for the third one
Answer:
1. Hypotonic
2.Isotonic
3.Hypertonic
Explanation:
Number 1 is hypo tonic because solute is going into the cell. The cell is getting bigger and expanding. You can think of Hypotonic as getting bigger by using Hypo which can be Hippo. Hippos grow bigger over time.
Number 2 is Isotonic. The water is going in and out at the same rate. Therefore, nothing really changes here.
Number 3 is Hypertonic because the cell has shrunk.
Which nitrogenous base would pair with adenine during DNA replication?
A
O cytosine
<
B
O guanine
C
Othymine
D
ouracil
The nitrogenous base would pair with adenine during DNA replication is othymine. Thus, option C is correct.
What are nitrogenous base?
Replication relies on complementary base pairing, that is the principle explained by Chargaff's rules and adenine (A) always bonds with thymine (T) and cytosine (C) always bonds with guanine (G). 18% became cytosine pairs with G. A pairs with T. T and C are not complementary base pairs, but we know that if molecules consists of 32% T, it must have 32%.
The discovery of the structure of DNA was useful because it revealed how mRNA was used to make proteins. There are four nitrogen bases of DNA nucleotides are such as adinine, thymine, guanine and cytosine.
HDL stands for high-density lipoprotein or good cholesterol which absord cholesterol and send it to lever. The lever then flushes it from the body. High-density lipoprotein can lower your risk for heart disease and stroke.
Therefore, The nitrogenous base would pair with adenine during DNA replication is othymine. Thus, option C is correct.
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an organism uses the energy from food to travel across the forest. This is an example of conversion from _____.
a) chemical energy to kinetic energy
b) kinetic energy to potential energy
c) kinetic energy to chemical energy
d) thermal energy to chemical energy
Answer:
A
Explanation:
FOOD IS CHEMICAL, KINETIC IS ENERGY SO its A
The totality of a cell's DNA is referred to as its
Answer:
genome
Explanation:
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how does the different types of cells that make up the non-specific immunity team work together?
Answer:
non-specific immune cell is an immune cell (such as a macrophage, neutrophil, or dendritic cell) that responds to many antigens, not just one antigen. Non-specific immune cells function in the first line of defense against infection or injury.
Please answer the question
Please help
List the three domains of life and provide an example of an organism for each.
Answer:
Explanation:
All life can be classified into three domains: Bacteria, Archaea, and Eukarya
Organisms in the domain Eukarya keep their genetic material in a nucleus and include the plants, animals, fungi, and protists.
Which of the following is the complimentary DNA strand for the sequence shown below?
ACT GCA
Please explain, if possible.
The complimentary DNA strand for the sequence ACT GCA is TGA CGT.
What is DNA?DNA stands for deoxyribonucleic acid which is defined as a polymer made up of two polynucleotide chains which coil around each other to form a double helix.
Primarily DNA is located in the cell nucleus called nuclear DNA, but a small amount of DNA can also be found in mitochondria called mitochondrial DNA or mtDNA, so mitochondria are structures within cells that store energy from food that converts into energy.
The information in DNA is stored in the form of code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T) which are bond to each other by hydrogen bond like A with T with 2 hydrogen bonds while C with G with 3 hydrogen bonds. Like for above given information, ACT GCA complimentary strand is TGA CGT
Thus, The complimentary DNA strand for the sequence ACT GCA is TGA CGT.
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Why did the color of the peppered moth change?
The moths’ life cycle changed.
The environment changed.
The amount of variation in the moth population changed.
The number of individual moths in the population changed.
Answer:
The environment changed.
Explanation:
Hope this will help
Answer:
The environment changed.
Explanation:
I took the test and I got it correct
Which of the following will result from the bottleneck effect?
A. Increase genetic diversity
B. Decrease genetic diversity
C. Adaptation of species
D. Reproductive Isolation
Answer:
B. Decrease genetic diversity
Explanation:
Answer:
Explanation:
decrease in genetic diversity because only some species will reproduce adequately due to the bottleneck effect
why does my mom and dad always moan when they think I'm sleep
Answer:
they're just wrestling and playing games
Explanation:
What type of mutation occurs when part of a chromosome is missing after replication?
Answer:
The correct answer is deletion
Explanation:
It occurs when a chromosome breaks and some genetic material is lost.
What is the difference between a substrate and an active site?
Answer:
a reactant in a chemical reaction is called a substrate when acted upon by enzyme. an active site is the part of an enzyme to which substrates bind and where a reaction is catalyzed. :)
Q.19. During which period did the first flowering plants (angiosperms) appear?
a) Triassic
b) Silurian
C) Jurassic
d) Cretaceous
Answer:
Cretaceous
Explanation:
They began changing the way the world looked almost as soon as they appeared on Earth about 130 million years ago, during the Cretaceous period. That's relatively recent in geologic time: If all Earth's history were compressed into an hour, flowering plants would exist for only the last 90 seconds
Topic is about blood types.
Answer:h
Explanation:
"Crossing Over" occurs in Prophase 1 of Meiosis.
True
False
Answer:
true
Explanation:
Answer:
Crossing over occurs during prophase I of meiosis before tetrads are aligned along the equator in metaphase I. By meiosis II, only sister chromatids remain and homologous chromosomes have been moved to separate cells. Recall that the point of crossing over is to increase genetic diversity.
Explanation:
during which stage of mitosis do the chromosomes line up along the middle of dividing cell
Answer:
Metaphase
Explanation:
Where are coastlines located ?
Answer:
at the confluence between the sea and the land at the time of the highest tide
sorry if this answer wrong:(
Which of the following statement is true about fossil ?
Answer:
there are no statements...
Explanation:
Answer:
Explanation:The deeper you go into the Earth the older the fossils will be. So, in the diagram you have provided we see that fossil #5 is the oldest and fossil #2 is the youngest.
The order of age goes like this (from youngest to oldest):
1. Fossil #2
2. Fossil #1
3. Fossil #4
4. Fossil #3
5. Fossil #5
Therefore, the only correct answer would be that fossil #4 is younger than fossil #3.
Evaluate the model.select that do NOT accurately identify the structures labeled in the picture. Choose all that apply.
Answer:
C.)Genes,E are pairs of chromosomes that code for traits.
D.)Genes,G, are segments of chromosomes that carry traits
Explanation:
Write a 2 paragraph summary about the structure of DNA from the information on the first page.
FYI the picture is attached
Answer:
DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.
The four types of nitrogen bases found in nucleotides are: adenine (A), thymine (T), guanine (G) and cytosine (C). The order, or sequence, of these bases determines what biological instructions are contained in a strand of DNA. For example, the sequence ATCGTT might instruct for blue eyes, while ATCGCT might instruct for brown. The complete DNA instruction book, or genome, for a human contains about 3 billion bases and about 20,000 genes on 23 pairs of chromosomes.
I hope this works and I helped :3
Explanation:
What is the era of the multicellular algae
Answer:
its the phanerozoic era