Answer:
the cell wall!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Explanation:
it coversssssssssssssssssssss the cell and protects it
Select the part whose main job is to direct a plant cell's activities by sending instructions to
different parts of the cell.
vacuole
chloroplasts
mitochondria
nucleus
Please hurry I’m in a rush
Nucleus part main job is to direct a plant cell's activities by sending instructions to different parts of the cell.
What is the short definition of a plant cell?Plant cells are eukaryotic cells with a genuine nucleus and particular organelles to carry out particular tasks. Plant cells do, however, include several organelles that are unique from those seen in other eukaryotic cells.
Where can you find plant cells?Roots, stems, leaves, flowers, and reproductive structures are only a few of the major classes of cells and tissues that are formed when plant cells differentiate from undifferentiated meristematic cells, which are similar to the stem cells of animals.
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HELP PLZZZ!!!......Which feature is created by wave erosion?
A)loess
B)delta
C)rill
D)stack
Answer:
the answer is d stack
Explanation:
A feature which is created by wave erosion is Stack. Thus, the correct option is D.
What is Wave erosion?Wave erosion can be defined as the waves which are creating a variety of landforms along with a shoreline. Sea cliffs generally occur when the waves erode rock, resulting in the high slopes formation. Wave energy results into production of erosional formations such as cliffs, wave cut platforms, sea arches, and the sea stacks. These all are features of wave erosion.
Sea wave erosion is accomplished primarily by the hydraulic pressure, the impact of waves that are striking the seashore, and through the abrasion that is wearing, grinding, or rubbing away by the friction by sand and pebbles that are agitated incessantly by the water and wave-cut platform.
Therefore, the correct option is D.
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How do human sex chromosomes keep the numbers of males and females roughly equal?
Answer:
It is simple mathematics , because sex chromosome XX are found in female and XY in male the remaining 22 pairs are the same in both.
Explanation:
I looked it up. I'm sorry if it's wrong.
True or False? Many marine organisms depend on estuaries during at least some point of their life.
Answer:
False
Explanation:
It is false because it is not true.
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Cellular respiration involves a reaction between glucose and oxygen to form_____
1: carbon dioxide
2: water
3: all of these
4: energy
Answer:
3. All of these
Explanation:
When the reaction of cellular respiration occurs, carbon dioxide and water is created while energy gets released.
Answer:
3: all of these
Explanation:
They actually form ATP, which is essentially energy. Byproducts are water and carbon dioxide. I would say all of these answers are true! Remember though, ATP (energy) is the main product while water and carbon dioxide are byproducts.
Nietzsche believes that aesthetics is not as promising as religion.
true or false
Answer:
True
Explanation:
Believe in me
The belief of Nietzsche that aesthetics is not as promising as religion is definitely true.
What is Aesthetics?Aesthetics may be defined as a branch of philosophy that deals with the nature of beauty, art, and taste and with the creation and appreciation of beauty.
Religion is significantly a part of life that is different from the aspects of aesthetics, eating items, and thought processes.
Religion is something that deals with the concept of peace, joy, and prosperity among the people of the same or different religions.
Therefore, the belief of Nietzsche that aesthetics is not as promising as religion is definitely true.
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Living cells cannot use heat to provide the activation energy for biochemical reactions because
What's the biggest animal in the world?
What does geological time have to do with rocks?
Answer: Measuring the amounts of radioactive elements in rocks let scientists useabsolute dating to give ages to each chunk of time on the geologic time scale. For example, they are now able to state that the Jurassic began about 200 million years ago and that it lasted for about 55 million years.
Explanation:
Mutations leading to changes that can be inherited by the next generation have to be introduced at the _______ level.
Answer:
same
Explanation:
WHAT TYPE OF MUTATION IS THIS?
Answer:
Missense mutation. This type of mutation is a change in one DNA base pair that results in the substitution of one amino acid for another in the protein made by a gene. Nonsense mutation. A nonsense mutation is also a change in one DNA base pair
Explanation:
Woodpeckers peck trees to find food and make nests. What would happen if
most of the trees are cut down?
Answer:
the wood packers wouldnt have a home to live in anymore. the effect of this means that the habitat for them and other animals is destroyed and they could start to die and become endangered species. this is my opinion
Explanation:
This is from what I have learned so far
Many signaling pathways have multiple transducer proteins, for example in a multi-enzyme phosphorylation cascade - one of the purposes for this is: _________.
a. to prevent damage to the receptor protein
b. to amplify the signal
c. all choices are correct
d. to avoid gene duplication
e. to conserve ATP and/or GTP
Answer:
b. to amplify the signal
Explanation:
A multi-enzyme phosphorylation cascade is a series of signaling events where one enzyme phosphorylates to another, then this last enzyme acts to phosphorylate another protein and so successively, thereby triggering a chain reaction that leads to the phosphorylation of hundreds or even thousands of proteins. A multi-enzyme phosphorylation cascade is known to increase the number of activated (phosphorylated) proteins at each step of the signaling cascade. Phosphorylation is a posttranslational modification capable of activating proteins during long periods, thereby a phosphorylation cascade also enables the activation of multiple proteins before these proteins become inactive again.
One of the purposes of a multi-enzyme phosphorylation cascade is signal amplification, as shown in option B.
We can arrive at this answer because:
A multi-enzyme phosphorylation cascade allows the emission of a sequence of signals, which occur simultaneously.These signals are created from a series of enzymes, each of which emits a signal by phosphorylating a protein.This all promotes thousands of phosphorylations to be promoted at the same time, all giving off signals.This simultaneous emission of signals extends the range of these signals and allows the phosphorylated proteins to emit more signals, further expanding their reception.In this case, we can state that the multi-enzyme phosphorylation cascade has the function of amplifying an emitted signal.
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- Which molecule synthesized by plants is a major source of chemical energy for
cellular processes in both plants and animals?
Answer:
I think Glucose
Explanation:
At which type of boundary do rocks react to tectonic stress and pull away leading to the formation of new crust?
Answer:
Divergent boundary.
Explanation:
At divergent plate boundaries, plates react to tectonic stress and move away from each other. Magma from the mantle hardens on the edge of each plate, forming new crust. I hope this helps!
11
Sea otters move into the ocean bay. The eat all the sea urchins. This change will cause the
A. Kelp to have less food
B. crabs to have less food
C. Sea ducks to have more food
D.Arctic foxes to have more food
The presence of sea otters in an ocean bay will result in a reduction in the amount of food available to carbs because they feed on sea urchins. Therefore, option (B) is correct.
What is food chain?The linear relationship between creatures that demonstrates how they obtain energy by feeding on one another is referred to as the food chain.
The information provided in this inquiry suggests that sea otters migrate into the ocean bay and consume all of the sea urchins there.
This leads one to believe that they cut down on the food supply of another eater of urchins, such as carbs. Because of this, the introduction of sea otters into the ocean bay will result in there being less food available for carbs.
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Which characteristic of life distinguishes a fire and a flowering plant?
Answer:
crytaExplanation:
Answer:
The use of energy is a life characteristic that distinguishes fire from a flowering plant
Explanation:
When fire is put on, it makes use of oxygen and releases carbon dioxide and other gases. Burning of fire makes use of heat energy
If the original strand reads ATT-CCC-GCA what is the complementary strand?
Explanation:
Problem Set 4 Answers
1a. The template DNA strand, from which the mRNA is synthesized, is 5’ CAAACTACCCTGGGTTGCCAT 3’
(RNA synthesis proceeds in a 5’ à 3’ direction, so the template strand and the mRNA will be complementary to each other)
b. The coding DNA strand, which is complementary to the template strand, is 5’ ATGGCAACCCAGGGTAGTTTG 3’
c. The sequence of the mRNA is 5’ AUGGCAACCCAGGGUAGUUUG 3’
(the sequence of the mRNA is complementary to the template strand and identical to the coding strand with U substituted for T)
d. The third codon is 5’ ACC 3’. Therefore, the corresponding anti-codon is 5’ GGU 3’
2. Below is a table for the genetic code:
T
C
A
G
T
TTT Phe (F)
TTC "
TTA Leu (L)
TTG "
TCT Ser (S)
TCC "
TCA "
TCG "
TAT Tyr (Y)
TAC "
TAA Stop
TAG Stop
TGT Cys (C)
TGC "
TGA Stop
TGG Trp (W)
C
CTT Leu (L)
CTC "
CTA "
CTG "
CCT Pro (P)
CCC "
CCA "
CCG "
CAT His (H)
CAC "
CAA Gln (Q)
CAG "
CGT Arg (R)
CGC "
CGA "
CGG "
A
ATT Ile (I)
ATC "
ATA "
ATG Met (M)
ACT Thr (T)
ACC "
ACA "
ACG "
AAT Asn (N)
AAC "
AAA Lys (K)
AAG "
AGT Ser (S)
AGC "
AGA Arg (R)
AGG "
G
GTT Val (V)
GTC "
GTA "
GTG "
GCT Ala (A)
GCC "
GCA "
GCG "
GAT Asp (D)
GAC "
GAA Glu (E)
GAG "
GGT Gly (G)
GGC "
GGA "
GGG "
a. The following codons can be mutated by one base to produce an amber codon:
CAG Gln
AAG Lys
GAG Glu
TCG Ser
TTG Leu
TGG Trp
TAA Stop
TAT Tyr
TAC Tyr
The complementary strand will read TAA-GGG-CGT since the A is complementary to T and C is to G nucleotide.
What are nucleotides?A biological molecule known as a nucleotide has the basic building blocks of a nitrogenous base, pentose sugar, and phosphate. As polynucleotides, DNA and RNA are composed of a chain of monomers with various nitrogenous bases. The execution of metabolic and physiological processes requires nucleotides.
Building blocks of nucleic acids, energy storage, carriers of activated metabolites for biosynthesis, structural moieties of coenzymes, and metabolic regulators are all roles that nucleotides play in the physiology of animals.
Adenine and thymine and guanine and cytosine are the proper bases to couple with in DNA. Therefore, the complementary strand will read TAA-GGG-CGT since the A is complementary to T and C is to G nucleotide.
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what are the cells that divide to produce gametes ?
Answer:
cells needed for sexual reproduction
Explanation:
so that during fertilization,the total number of chromosomes will be 46..
What are the cells that divide to produce gametes? germ cells
What is a gamete?It is the reproductive cell of an organism. They are haploid in nature.
How many types of gametes are there?There is a male gamete that is termed sperm (animals) or pollen grain (plants) and a female gamete that is termed ovum (animals) or egg (plants).
What kind of division occurs prior to gamete formation?Meiosis, or reductional division, occurs prior to gamete formation.
What is its significance?It ensures that after fertilization, the normal diploid number is maintained.
What kinds of cells undergo this division to produce gametes?Germ cells are the cells that produce gametes.
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For the Hill Reaction, you used DCIP dye at a concentration of 1x10-4 M. Our lab technicians have stock solution at a concentration of 100mM. Explain how you would make 100mL of the DCIP for you to use in a Hill Reaction lab.
Answer:
by diluting the DCIP dye stock solution 1000 times. It can be done by diluting 0.1 ml of the DCIP dye stock solution with 99.9 ml of distilled water
Explanation:
1 millimolar (mM) = 0.001 M
1.0 × 10⁻⁴ Molar (M) = 0.0001 M = 0.1 mM
Stock solution = 100 mM = 0.1 M
100 mM DCIP dye solution diluited 1000 times >> 0.1 mM = 1 x 10⁻⁴ M
Do you believe that all of our actions can be attributed to the nervous system? Does your memory of an event trigger your responses? Why or why not?
Answer:
The nervous system is made up of all the nerve cells in your body. It is through the nervous system that we communicate with the outside world and, at the same time, many mechanisms inside our body are controlled. The nervous system takes in information through our senses, processes the information and triggers reactions, such as making your muscles move or causing you to feel pain. For example, if you touch a hot plate, you reflexively pull back your hand and your nerves simultaneously send pain signals to your brain. Metabolic processes are also controlled by the nervous system.
Explanation:
2. What information did Watson and Crick use for their model ?
The crust of the earth sometimes will move along fractures called
fissures
earthquakes
faults
folds
Answer:
fault
Explanation:
the other ones dont even make sense
Question:
The crust of the earth sometimes will move along fractures called?
Answer:
Faults.
1) What is a sphincter muscle?
2)Name TWO places in the alimentary canal where sphincter muscles are found?
Answer:
1-A ring-shaped muscle that relaxes or tightens to open or close a passage or opening in the body.
2-Sphincters are specialized muscles that are located at the upper esophagus (upper esophageal sphincter (UES) and the gastroesophageal junction
Explanation:
When the partial pressure of O2 in venous blood is 30 Torr, the saturation of myoglobin with O2 is _______, while the saturation of hemoglobin with O2 is ______.
Answer:
0.91, 0.55
Explanation:
When the partial pressure of O2 in venous blood is 30 Torr, the saturation of myoglobin with O2 is 0.91 while the saturation of hemoglobin with O2 is 0.55
what is the role of the grana in chloroplast?
Answer:
Grana are the structures formed of coin like structures called thyllakoids that encloses chlorophyll for absorbtion of light essential for photosynthesis.And grana also give green colour to chloroplast.
Explanation:
which of the following is not a constant?
a. plant height
b. types of beans
c. amount of fertilizer
d. hours of sun exposure
Answer:
a. plant height.
Explanation:
As you can see in the diagram the plant heights are varied.
Regarding the General Adaptation Syndrome, a short term response to stress in which glycogen is broken down to glucose is characteristic of the
The complete question is as follows:
Regarding the General Adaptation Syndrome, a short term response to stress in which glycogen is broken down to glucose is characteristic of the stage. 1) Alarm reaction 2) Stage of resistance 3) Stage of exhaustion
Answer:
The General Adaptation Syndrome or GAS explains the pattern of responses that body experinces in response to prompted by a stressor. There are three phases of this syndrome:-
1. Alarm reaction:
Sympathetic system and Hypothalamopituitary axis activated by the stress result in reaction by body.
2. Stage of resistance:
The hormone that is releases continusoly in this stage by the zona fasciculata layer of adrenal cortex is cortisol to maintain arousal.
3. Stage of exhaustion:
In abscence of enough blood sugar or glucose in the body, the body initiates breakdown of the glycogen (stored sugar in muscles mosty) with the help of hormone known as glucagon to covert it to glucose so that it can be used by the cellular respiration.
1) Jupiter, mars, and_______ have wind
2) ______ means to wear away
3) at a wind farm they harvest_______ energy
Answer:
1)Earth
2)disappear
3)Solar energy
Explanation:
I am not sure but hope it helps let me know if its correct.
GOOD LUCK!
HELP PLSSSS
Question 24
2 pts
What is the difference between a question and a hypothesis?
A question is an assumption and the hypothesis is the answer to the assumption.
A question is developed from some observations and the hypothesis is a tentative explanation for that
question.
A question is what you end up with after the test and the hypothesis is a summary of the conclusions.
A question is the summary of data collected and the hypothesis is the interpretation of the data
Question 25
2 pts.
Answer:
A question is developed from some observations and the hypothesis is a tentative explanation for that
Explanation: