Answer:
In cells, somemolecules can movedown theirconcentration gradients by crossing the lipid portion of the membrane directly, while others must pass through membrane proteins in a process called facilitated diffusion.
Explanation:
please mark as brainlist answers
100 g of a mystery metal at 250 C is added to 400 mL of water at 15 C. The final temperature of the system is 15.9 C. What is the heat capacity
of the mystery metal?
(PLEASE HELP need the answer by 10/21/20
11:00pm)
Answer:
c = 0.064 j/g.°C
Explanation:
Given data:
Mass of metal = 100 g
Initial temperature of metal = 250°C
Volume of water = 400 mL
Initial temperature of water = 15°C
Final temperature = 15.9°C
Heat capacity of metal = ?
Solution:
First of all we will calculate the heat lost by metal into water.
ΔT= 15.9°C - 15°C
ΔT= 0.9 °C
q = mcΔT
q = 400 g× 4.184 j/g.°C × 0.9 °C
q = 1506.24 j
Specific heat capacity of meta;
ΔT = 15.9°C - 250°C
ΔT = -234.1 °C
q = mcΔT
-1506.24 j = 100 g× c × -234.1 °C
(negative sign with q value indicate heat is lost by metal)
-1506.24 j = -23410 g.°C × c
c = -1506.24 j /-23410 g.°C
c = 0.064 j/g.°C
Pls help me for brainliest
Answer:
b new experiments will be conducted until evidence supporting the accepted theories is obtained
Answer:
C. The accepted theory will be revised or replaced
Why are plants in the alpine biome typically low growing?
a
Answer:
They have limited access to nutrients
Explanation:
I guess you forgot to but the answer choices, but that's okay!!!
Answer: Because The soil in the alpine biome is rocky and nutrient poor. Plants that live in the alpine biome must be suited to the nutrient poor soil.
Explanation: They take longer to grow because of there environment
Which of the following would not be considered an observation in terms of the scientific method? A. tasting a pasta sauce after adding a new ingredient B. looking at a blood sample through a microscope C. a dog buries a bone in the backyard D.listening to bats of different materials hitting a baseball
Answer:
C. a dog buries a bone in the backyard
Explanation:
A dog burying a bone in the backyard is not an observation in terms of scientific methods.
Observation is the process of acquiring data about a phenomenon under study.
Most times, senses are used in making observations. Our sense of taste, hearing, sight etc. comes handy when making observation.
Also, we can use some specialized equipment to make observations.
A dog burying a bone in the backyard is not an observation. None of the senses nor instruments are used to gather any relevant information.What is the purpose of Mitosis? *
A. To produce an egg and a sperm cell.
B. To produce a new organism (like bacteria).
C. To produce a new cell (NOT a new organism).
D. To differentiate.
Answer:
C.
Explanation: Mitosis is a process where a single cell divides into two identical daughter cells (cell division). During mitosis one cell? divides once to form two identical cells. The major purpose of mitosis is for growth and to replace worn out cells.
Hope this helps! Have a nice day!
Answer:
C. to produce a new cell
Explanation:
Mitosis consists in replicating the genetic material of a mother cell in order to make two identical daughter cells; this is a diploid process. In order to make an egg or sperm cell and eventually a new organism, the correct process would be meiosis, since it combines the DNA between two cells and it is an haploid process.
How many people have you sacrificed to floor gang?
Answer:
85
Explanation:
I lost count after 738
I'm pretty sure it's well over a thousand but I can't be sure
What is located outside of the center of the atom?
Answer:
Nucleus
Explanation:
Protons and neutrons are found in the nucleus.
What does it represent?
Answer:
3
Explanation:
The arrows show the transfer of energy through prey and predator. When the deer eats the leaves, energy from the plant is transferred to the deer.
All of the following are nitrogenous bases of DNA, EXCEPT -
guanine.
adenine.
uracil.
thymine.
Answer:
adenine
Explanation:
Answer:
uracil
Explanation:
The 4 bases of DNA are adenine, guanine, thymine and cytosine.
Describe the steps of Meiosis I and Meiosis II.
Answer:
Hello
Explanation:
Overview of the Stages of Meiosis
Interphase. There are two stages or phases of meiosis: meiosis I and meiosis II. Before a dividing cell enters meiosis,...
Prophase I. Chromosomes condense and attach to the nuclear envelope. Synapsis occurs (a pair of homologous chromosomes...
Metaphase I. Tetrads align at the metaphase plate. Note that the centromeres of homologous...
Hope This Helps!!
Describe the relationship between photosynthesis and cellular respiration.
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
Explanation:
BEST ANSWER WILL GET BRAINLIEST!
Skin cells,
A: Have terminally differentiated
B: Become quiescent quickly
C: Become senescent quickly
D: Continually replicate
Which type of cell undergoes terminal differentiation?,
A: Stem cells
B: Epithelial cells
C: Hair cells
D: Heart cells
DNA replicates in the,
A: Cytoplasm
B: Cell membrane
C: Endoplasmic Reticulum
D: Nucleus
Which of the following might affect gene expression in a complex organism?,
A: The cells adjacency to other kinds of cells
B: The number of chromosomes being copied
C: The amount of time a cell takes to replicate
D: The ability to reverse terminal differentiation
What replicates during mitosis?,
A: Cytoplasm
B: Proteins
C: Organelles
D: DNA
Answer:1B 2.D 3.D 4.C 5.D not sure about 4 and 5 but the rest are right
Explanation:
Answer:
(Not using letters as they vary)
1. Skin cells...
become senescent quickly.
2. Which type of cell undergoes terminal differentiation?
Heart cells
3. DNA replicates in the...
Nucleus
4. Which of the following might affect gene expression in a complex organism?
The types of cells near the site
5. What replicates during mitosis?
cells
Explanation:
Hope this helps :D
Need answer ASAP!!
Which describes a species?
A. organisms that live in the same area
B. organisms that breed and produce fertile offspring
C. organisms that look similar
Answer:
B
Explanation:
organisms that breed and produce fertile offspring
Answer:
B. organisms that breed and produce fertile offspring
Explanation:
Verified correct with test results.
3. Which of the following is a defining characteristic of a prokaryotic cell?
a. The method of cellular Respiration
b. The composition of the cell membrane
C. Absence of a membrane-bound nucleus
d. The method of movement
Answer:
C
Explanation:
Prokaryotic cells do not have any membrane-bound organelles, only eukaryotes do.
The prokaryotic cell is a simple primitive cell, unlike the complex eukaryotic cells. The absence of a membrane-bound nucleus is a characteristic of prokaryotes. Thus, option C is correct.
What is a prokaryotic cell?Prokaryotes have been the cells that have lived on earth for millions of years ago. They are made of single cells and hence are unicellular. Unlike the eukaryotic cell, they have simple mechanisms of living and reproduction.
They lack a centrally located defined nucleus that is not covered in any membrane and lies simply in the cytoplasmic material. Also, they lack organelles that make them different.
The genetic material is located in a concentrated form in a structure called the nucleoid that lacks a nuclear membrane.
Therefore, option C. the prokaryote lacks a membrane-bound nucleus.
Learn more about prokaryotes, here:
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Which of the following does NOT describe an acute injury?
over-stretching a muscle
popping a joint out of place
breaking an arm or leg bone
developing lung cancer
Answer:
developing lung cancer
Explanation:
i got it right on the assignment
Answer:
Developing lung cancer
Explanation: Edge 2021
What is the approximate diameter of the Zika virus?
The nucleus is surrounded by a membrane. This membrane has pores that enable the nucleus to carry out one of its functions. What do these pores allow to happen?
A) nutrients that are stored in the nucleus to enter the cytoplasm
B) proteins that are made in the nucleus to pass into the cytoplasm
C) waste substances to enter the nucleus
D) genetic information to pass from the nucleus to the cytoplasm
Answer:
D
Explanation:
The nucleus contains the genetic information of the cell. When the cell needs instruction to make protiens, Rna carries those instructions out of the cell because DNA is too large to fit through the pores. Proteins are made in the ribosomes.
what do you think is a way for geologist to locate ore bodies? justify your answer
Answer:
Explanation:
what do you think is a way for geologist to locate ore bodies? justify your answer
From my research, there is lots of information on how to extract ore, but I can't find any information on how these ore deposits are found in the first place, apart from 'looking for surface formations'. So, what kind of formations would exist for different types of ore? Are there any other ways of finding ore?
what is the average human body temperature?
Answer: average oral temperature is 97.5˚ or stated as 36.5–37.5 °C
Explanation:
Answer:
98.6 degrees Fahrenheit.
Explanation:
What type of cell is shown in the diagram above? Explain your answer.
Answer:
Plant Cell
Explanation:
It is shaped like a rectangle and has a huge vacuole which is the biggest thing in a plant cell. Your welcome :)
If a person combat the disease without a vaccine introduced to his body,such immunity is known as
natural active immunity
natural passive immunity
Artificial active immunity
artificial passive immunity
Answer:natural active immunity
Explanation:lol it took too long
How would you describe the difference in the motion of the sled from when the people first start pushing to when the sled is halfway down the hill?
The difference in the motion of the sled from when the people first start pushing to when the sled is halfway down the hill will be described as after starting off much more slowly, it picks up speed significantly by the bottom of the slope.
At the top of the hill, a sled has pushed itself. If we then apply a tiny push, the sled's initial speed will be 0, indicating that the sled's only starting energy is gravitational potential energy. Therefore, assuming there is no friction, the sled's greatest height will be equal to its initial brightness. So the slides will never make up for a bump that is higher than its starting point. The sled's highest point is equal to its initial height because of the rule of conservation of mechanical energy. The sled will never make it up if they restrict it if the friction is seated.
To learn more about Friction visit: https://brainly.com/question/28356847
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what is the basic of the cell membrane
Answer:
Cell membranes are composed primarily of fatty-acid-based lipids and proteins.
Explanation:
Many people try to eliminate fat from their diets. Which is one reason it is
necessary for humans to eat fat?
Answer:
the internal organs of the body is cushioned by fat. fat is adipose tissue stored in the body. fat is as important as such other micro molecules such as protein carbohydrates. they serve the body in many ways out of those one of the important function is protection of internal organs.
What are the disadvantages of polygamous in animals
Answer:
The principal disadvantage of monogamy is a lack of variety. Monogamy has the potential to lead to routine, and possibly boredom. People often equate excitement in a relationship with the ability to be with a number of individuals, potentially as part of an open or sometimes polyamorous relationship.
Explanation:
what characteristics are affected by genetics?
Answer:
Well.
Explanation:
1. Weight
2. Height
3. Chronic Diseases
4. Skin color
5. Eye color
6. Race
7. Hair color
8. And the overall shape of your whole body (ie, head shape)
Answer:
The characteristics that are impacted by genetics are :
-The eye color
-The nose shape
-Hair color
-Face shape
-Skin color
-And any type of beauty mark someone has
How will help preserve kitchen
tools to avoid rusting?
Enter the correct 4 digit code (no spaces)
Answer:1243
Explanation:
Answer:
4123
Explanation:
I'm working on the same except mine says level two
A. Is the suspect guilty of the crime? B. How do you know?
WILL MARK BRAINLIEST FOR COMPLETE AND CORRECT ANSWER!
Answer:
A: yes
Explanation:
B: Sample three is a mixture of the suspect and victims. Putting it simply, if you line up the victims DNA and remove it from sample 2 you are left with a sample of DNA that is identical to the suspects.
8.The advantage of light microscope over electrons microscope:
Ait doesn't require electric relay
Bit is easier to move from place to place
Cit is so expensive
DA and B
Answer:
may be D is the right answer because
electrons microscope it not easy to handle and so expensive but light microscope is easy to handle and less experience