Answer:
D
The cell is 80% water, and the cell's environment is 20% water.
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חו
Explanation:
The cell is 80% water, and the cell's environment is 20% water.
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חו,
The photo shows several Volvox, one of the simplest multicellular living things. Volvox have no tissue. What other three things do Volvox also likely lack?
A. Organs
B. Cells
C. Muscles
D Organ systems
Answer:
Muscles, organs, and organ systems
Explanation:
Ap*x
An earthquake wave travels from its source underground to the ocean floor. What will happen to the wave when it meets the water in the ocean?
Answer:
It will slow down.
Explanation: When waves change mediums it usually slows down. Got this from my teacher:)
Which of the following statements is true concerning humans?
Why don't siblings look exactly alike?
Accualy some do, but that's a little rare, so I'm guessing because each child gets some of there mom and dad's to genetics, one child might get some of there mom's but more of there dad's and the other might get some of there dad's and more or there mom's..? not sure if that makes any sense-
Which best describes the nucleus of an atom?
Answer:
A. It is the most massive part of the atom.
SOMEONE ANSWER ASAP!!!!
Which of these is true about immunity?
A
Antibodies protect us from getting the exact same virus twice.
B
Some people get the same virus over and over again.
C
People can only get a virus if they have received the vaccine for it.
D
Most people do not ever get viruses.
Answer:
A-Antibodies protect us from getting the exact same virus twice
Explanation:
Answer:
Ok So, I would say it would be A or B , because C is not true.
Explanation:
Why Do We Have Different Seasons
Let's look at the original hypotheses arising from the original question: "Does the size of the
substance affect its ability to diffuse across cell membranes?"
Small substances: If the size of a substance is important in its ability to
diffuse across a cell membrane, then small substances should be able to
freely diffuse across cell membranes.
?
Large substances: If the size of a substance is important in its ability to
diffuse across a cell membrane, then large substances should not be able
to freely diffuse across cell membranes.
?
Do the observations of H+?glucose and cortisol support the
hypotheses?
Explain your answer
Answer:
H1: false, the observations of the molecules do not support the hypothesis...
Explanation:
The cell membrane is comprised of a phospholipid bilayer, proteins, and cholesterol. These components help the membrane to maintain its selective permeability and concentration of solutes and water.
The lipid molecules have polar hydrophilic heads and hydrophobic tails. These only readily allow for the movement of small non polar molecules. Other substances, like charged ions and large molecules require transport proteins to move in and out of the cell. Hypothesis: H+ is small and should be able to move freely through the membrane, While glucose is large and cannot move freely
Observing H+, despite being very small these cannot easily pass through the membrane. They require transport proteins called channels for their free movement or passive movement across the membrane.For glucose, these molecules pass through specialized channels in facilitated diffusion. They move down their concentration gradient into the cell. To move out of the cell against its concentration gradient glucose requires ATP for active transport.Cortisol, is a large steroid hormone, taken into the cell by simple diffusion across the lipid membrane, down its concentration gradient.Which statement below is correct
Photosynthesis produces ATP, and cellular respiration requires light energy.
Photosynthesis produces carbon dioxide, and cellular respiration produces sugars.
Photosynthesis and cellular respiration occur in both plant and animal cells.
Photosynthesis produces the oxygen required for cellular respiration.
Photosynthesis and cellular respiration occur in both plant and animal cells.
DNA Sequence: T A C A C C T T G G G A C G A C T
What will be the amino acid sequence
Answer:
Explanation:
(protein) sequence: MET TRP ASN PRO ALA GA
Pleaseee help I’m failing kinda
Scientists recently discovered a single-celled, prokaryotic organism living deep in the ocean by thermal vents that can reach temperatures
as high as 100 degrees Celsius. This species will most likely be classified into which Kingdom?
O Kingdom Protista
O Kingdom Eubacteria
OKingdom Archaebacteria
OKingdom Fungi
Answer:Kingdom Archaebacteria
Explanation:
Kingdom Archaebacteria can withstand high heats up to 125 celcius
Which phrase describes a feature of a Mercator projection?
is least commonly used
sizes most features to scale
presents longitude lines as parallel
shows most accurately near the prime meridian
Answer:
C - presents longitude lines as parallel
Explanation:
Answer:
c
Explanation:
i am a man of smartness
Explain the relationship between the processes of breathing and cellular respiration
Cellular respiration uses oxygen to release the energy stored in food.
Explanation:
In breathing living organisms take oxygen and release the carbon dioxide it is similar to the aerobic respiration.
There are two types of respiration:
1. Aerobic respiration
2. Anaerobic respiration
Aerobic respiration
It is the breakdown of glucose molecule in the presence of oxygen to yield large amount of energy. Water and carbon dioxide are also produced as a byproduct.
Glucose + oxygen → carbon dioxide + water + 38ATP
Anaerobic Respiration
It is the breakdown of glucose molecule in the absence of oxygen and produce small amount of energy. Alcohol or lactic acid and carbon dioxide are also produced as byproducts.
Glucose→ lactic acid/alcohol + 2ATP + carbon dioxide!
During cell division a chromosome is made of two distinct strands called
A.centromeres
B.homologs
C.chromatids
D.daughter cells
When a small amount of salt is dissolved in a large amount of water the water is referred to as the?
A) mixture
B) solute
C) solvent
D) ion
Answer:
C) solvent....,........
The characteristics of two methods of heat transfer are listed below
Method A: does not transfer heat to solids and requires in medium for heat transfer
Method B: Requires a material medium and transfer heat from the hot into the cold end of a solid
Witch statement is correct?
A Method A confection in method B is radiation
B method A radiation and method B is convection
C method A radiation a method B is conduction
D method A convection in method B is conduction
C.Method A radiation a method B is conduction.This statement is correct.
The trait that overpowers and always shows up when the allele is present. A.Hybird traits B.Dominant traits C.Recessive traits
Answer:
B. Dominant traits
Explanation:
Dominant traits are as what the name implies, dominant over other traits. If something overpowers the other trait then it is a dominant trait.
Do animal cells have a nucleus ?
Answer:
Yes, animal cells do have a nucleus. If you were to look at the cell structure of an animal, you would see that they do indeed have a nucleus, with somewhat small vacuoles and other cell parts that humans and plants have. Animals do not have cell walls or chloroplasts like plants because they don't need those structures to function.
#teamtrees #WAP (Water And Plant)
is a banana a fruit berry or vegetable
Answer:
Raspberries are Not. It turns out berry is actually a botanical term, not a common English one. It turns out that blackberries, mulberries, and raspberries are not berries at all, but bananas, pumpkins, avocados and cucumbers are.
Explanation:
hope it helps
Answer:
A banana is a fruit
Technically speaking, a banana is a berry since it grown on a tree in bunches, but it's mostly accepted as a fruit.
Keep this in mind: Is it has seeds, it's a fruit, if it doesn't have seeds, it's a vegetable.
Explanation:
May I have brainliest please? :)
differentiate between arteries and veins what is the importance of capillaries in the circulatory system.
Answer:
Arteries-1.Involved in carrying pure, oxygenated blood and nutrient-rich blood.
2.Consists of three distinct layers, which are rigid, thicker and highly muscular.
3.Located deep within the body.
4.Red in colour.
5.Carry blood away from the heart to various parts of the body.
6.High pressure, as the blood flows by the pumping pressure of the heart.
7.Comparatively higher oxygen level.
8.The level of carbon dioxide is low
9.Lumina is narrow
10.Valves are absent
11.Arteries are at a greater risk of certain diseases like angina pectoris, atherosclerosis, etc.
Veins-1.Involved in carrying impure, deoxygenated blood
2.Consists of three distinct layers, which are thin and collapsible.
3.Peripherally located closer to the skin.
4.Blue in colour.
5.Carry blood towards the heart from the various parts of the body.
6.Low pressure, as the blood flows by the capillary action of the veins.
7.Comparatively low oxygen level.
8.The level of carbon dioxide is high
9.In upward direction from the body tissues to the heart.
10.Lumina is wide & Valves are present.
11.Veins are less susceptible to diseases such as varicose veins.
Though tiny, the capillaries are one of the most important parts of the circulatory system because it's through them that nutrients and oxygen are delivered to the cells. In addition, waste products such as carbon dioxide are also removed by the capillaries.
Explanation:
Hope this helps you
Crown me as brainliest:)
PLEASE HELP ASAP!!! GEOTROPISM
Answer:
Negative Geotropism
Explanation:
Positive Geotropism means growth of the plants towards the Gravitational force. e.g.It means When a plant's root grows towards Gravitational force . ... Negative Geotropism means growth of the plant against the Gravitational force. e.g. When a plant's steam grows towards sunlight.
Hope this helped!
~PumpkinSpice1
☼♥☼♥☼♥☼♥☼♥
When doing medical research with human subjects, which four limitations are unavoidable?
A- It’s often impossible to repeat trials on the same subjects.
B- Subjects may report an inaccurate medical history.
C- It can be difficult to control all possible variables.
D- It’s impossible to come up with testable scientific questions for human subjects.
E- There are ethical or privacy concerns to consider.
what are the 3 uses of ATP?
Answer: ATP is consumed for energy in processes including ion transport, muscle contraction, nerve impulse propagation, substrate phosphorylation, and chemical synthesis.
Explanation:
Which describes the function of a peptide bond?'
4) This is the word geologists use for loose pieces of minerals and rock. The particles are transported by wind, water, or ice,
and/or the force of gravity and eventually deposited.
Answer:sediment
Explanation:
guys remember me driplord123 comment if you do then add me again
Answer:
Nope...
Explanation:
Questions?
PLZ HELP ME!!!
why are cell membranes are described as phospholipid bilayers?
Answer:
Phospholipids, arranged in a bilayer, make up the basic fabric of the plasma membrane. They are well-suited for this role because they are amphipathic, meaning that they have both hydrophilic and hydrophobic regions. Chemical structure of a phospholipid, showing the hydrophilic head and hydrophobic tails.
Explanation:
Answer:
Phospholipids, arranged in a bilayer, make up the basic fabric of the plasma membrane. They are well-suited for this role because they are amphipathic, meaning that they have both hydrophilic and hydrophobic regions. Chemical structure of a phospholipid, showing the hydrophilic head and hydrophobic tails.
Explanation:
The relative concentration of solute inside and outside a cell can cause water molecules to move across the membrane. Which phrase would be an alternative title to the diagram
A. Facilitated Diffusion Across a Membrane
B. Osmosis Across a Membrane
C. Exocytosis in a Cell
D. Active transport in a cell
Which one of the following is a density-independent limiting factor for a group of kangaroo rats?
A) Stress
C) Amount of precipitation
B) Disease
D) Amount of grasses
Answer:
D.
Explanation:
Amount of grasses
...........
Which of the following are abiotic factors that shape ecosystems?
Group of answer choices