Question 7 (3 points)
(01.05 MC)
The distance time graphs for two objects are shown below:
Object A
Object B
Distance
(miles)
Distance
(miles)
Time
(hours)
Time
(hours)
Which statement is true? (3 points)
Ob
Both objects move at variable speeds.
Both objects move at a constant speed.
Object A is moving at constant speed but Object B is moving at variable speed.
Object A is moving at variable speed but Object B is moving at constant speed.
Od
Answer:
object b is moving at constant speed and object a is moving at variable speed
List the features of reptiles that indicate that they are higher vertebrates than amphibians.
Answer: Top 5 Characteristics of Reptiles. Reptiles Are Four-Legged Vertebrate Animals. Most Reptiles Lay Eggs. The Skin of Reptiles Is Covered With Scales (or Scutes) Reptiles Have Cold-Blooded Metabolisms. Reptiles Breathe With the Aid of Lungs.
Explanation:
Vertebrate animals are organisms that have a spinal column and use bones to support their weight. Scientists consider bones to be an organ of the skeletal system. What organ of a plant is most similar to a bone in animals.
A. Stem
B. Root system
C. Cell wall
D. Phloem
Answer: The stem, the stem keeps the plant stable. Much like our skeletal system.
The stem cells of the organ of a plant is most similar to a bone in animals. Hence option A is correct.
What is vertebrate?Vertebrate is defined as any terrestrial animal, which is the most prevalent subphylum of the phylum Chordata. Vertebrate animals are those that have a backbone. There are many vertebrates on the planet today, and they are divided into 7 classes according to their physiological and anatomical characteristics.
Stem cells are defined as unique human cells that can differentiate into a wide range of cell types, from brain cells to muscle cells. Stem cells can differentiate in the body into a wide range of various cell types. They act as the body's system for repairs. Adult stem cells and embryonic stem cells are the two primary categories of stem cells.
Thus, the stem cells of the organ of a plant is most similar to a bone in animals. Hence option A is correct.
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Which of these layers is the deepest?
Answer:
the answer is B. C horizon
Explanation:
AP3X
HELP ME NOW PLEASE
IM BEING TIMED
Isotopes of the same element will have a different number of neutrons, but the same number of protons.
Please select the best answer from the choices provided
T
F
Answer:
true
Explanation:
Atoms of the same element that contain the same number of protons, but different numbers of neutrons, are isotopes.
Answer:
TRUE!!!!!
Explanation:
Poggers
15. Explain how it would be possible to have a change in a single base of DNA, but have the protein NOT change and be functional.
Answer:
Nonsense mutation. A nonsense mutation is also a change in one DNA base pair. Instead of substituting one amino acid for another, however, the altered DNA sequence prematurely signals the cell to stop building a protein. This type of mutation results in a shortened protein that may function improperly or not at all.Sep 21, 2020
Explanation:
4. How to determine fats and oils in simple method?
5. Briefly describe the properties of triglycerides. (4 points)
6. What is the effect if eats food rich with saturated fats and
cholesterol? (3 points)
7. List 3 roles of triglycerides.
Answer:
5.Triglycerides are a type of fat. They are the most common type of fat in your body. They come from foods, especially butter, oils, and other fats you eat. ... Your body changes these extra calories into triglycerides and stores them in fat cells. When your body needs energy, it releases the triglycerides.
6.High LDL cholesterol increases your risk for heart disease and stroke. Weight gain. Many high-fat foods such as pizza, baked goods, and fried foods have a lot of saturated fat.
7.provide energy , primary form of energy storage , insulate and protect
Explanation:
The ans for the fourth question-
To a food sample (solution), add 2cm^3 of ethanol, then add 2cm^3 of distilled water.The test tube should then be lightly shaken
If the result is positive (If a lipid is present), a cloudy emulsion will form in the test tube.
Diffusion in membrane cell
Answer:
when small molecules pass through the lipid bilayer of a cell membrane simple passive diffusion occurs
Explanation:
Diffusion is one form of passive transport that doesn't require the expenditure of cellular energy. A molecule can diffuse passively through the cell membrane if it's lipid-soluble, uncharged, and very small, or if a carrier molecule can assist it. ... The assisted process is known as facilitated diffusion.
You now find new cells which contains 200 mM CaCl2 and 15 mM glucose. The cell membrane is permeable to Ca ions, impermeable to Cl- ions, impermeable to Na ions and impermeable to glucose. You transfer these cells into a solution which has 140 mM (NaCl) and 150 mM glucose. What happens to the cells after the solution and cell have come to equilibrium
Answer:
The correct answer would be - ions will move from solution 1 to solution 2 so the cell will shrink.
Explanation:
The concentration of CaCl2- = 200mM
CaCl2 dissociates in the three different ions in a solution and each has the same osmolarity
The concentration of glucose = 15 mM
So, the osmolarity of solution 1 would be:
3 × 200 + 15= 615 mM
Similarly, the osmolarity of the second solution would be
The concentration of NaCl = 140 mM
The concentration of glucose = 150 mM
NaCl dissociates in the two different ions in a solution and each has the same osmolarity
140×2+ 150= 430 mM
The solution has more concentration of ions than solution two so the movement of the calcium ion of the CaCl2- would be possible only and therefore, the cell in solution 1 will shrink.
(PLEASE HELP I WILL GIVE YOU 27 POINTS) Figure out how to make the diver sink.Figure out how to make the diver float again.Record your methods for changing the location of the diver in the space below.
this is for my science class please help me
Answer:
I have no idea
Explanation:
What invention allowed scientists to study cells for the first time? A- telescope B- scanning electron microscope (SEM) C- light microscope D- camera
The invention allowed scientists to study cells for the first time - C- light microscope.
The Discovery of the Cell The invention of the microscope in the 1600s enabled researchers to see cells for the first time
Robert Hooke named the empty chambers he observed in cork "cells."Anton van Leeuwenhoek was the first to observe living microorganisms.The discovery of the cell was made possible through the invention of the light microscope.Thus, The invention allowed scientists to study cells for the first time - C- light microscope.
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what are the three components of the cell theory
Answer: Sample Response.
Explanation: The first component of the cell theory says that all living things are made of cells. The second component of the cell theory states that cells are the basic structure and function of living things. The last component of the cell theory says that cells come from other cells.
are the cells above plant or animal?
What are 5 different types of heterotrophs, what do they eat, and give an example of an organism for each category.
Answer:
Five different types of heterotrophs are carnivores, herbivores, omnivores, scavengers, and detritivores.
Carnivores eat the meat of other animals. Example: Bear
Herbivores eat vegetation. Example: Deer
Omnivores eat a combination of both meat and vegetation. Example: Humans
Scavengers eat things left behind by carnivores and herbivores. Example: Raccoon
Detritivores eat small bits of organic matter, such as soil. Example: Worms
Edit: If you'd rather substitute one of those for a decomposer, Decomposers break down dead or decaying organisms. Example: Mushroom, or fungi.
Both the tropical rainforest in the tropical savanna experience or contain what
at what temperature are are particles more densely packed?
cold
warm
hot
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Why postharvest physiology is important to maintain sustainable food supply on this planet. Please give named examples and discuss various biological factors associated with produce deterioration after harvest
Answer:
Postharvest physiology plays a fundamental role in extending the shelf-life and quality of plant products. An example of postharvest physiology methodologies is by reducing the temperature to improve shelf-life before consumption
Explanation:
Postharvest physiology refers to the methodologies used for extending shelf-life and quality, thus being a critical issue in food systems. Postharvest approaches include chemical treatments, temperature reduction, cleaning and disinfection methods, etc. Crop varieties are genetically selected in order to maintain nutritional qualities of stored seeds for a long time after harvest. These seeds are also controlled during storage by using postharvest handling practices (e.g., chemical and enzyme inhibitors that extend shelf life).
What do you notice about the size of the two resulting cells (part of a gizmo)
Answer :Females generally produce a few but large gametes, whereas males produce large numbers of much smaller gametes.
Explanation:
which best describes what can happen as a result of radiation 
Explanation:
the answer is D..... radiation is the heat energy from the sun
Answer:
A car's inside temperature rises to over 100 degrees on a sunny day.
Explanation:
List three differences between light dependent and light-independent reactions of photosynthesis
what are the parts of the digestive system and their functions?
Mouth - break down food mechanically and chemically
Salivary Glands - produce saliva that contains enzymes which chemically break down food
Esophagus - move food from mouth to stomach through a process called peristalsis
Stomach - chemically break down food with stomach acid, mechanically break down food with the contracting of stomach muscles
Liver - creates bile that helps with digestion, stores, distributes and breaks down nutrients
Gallbladder - temporarily stores bile and squeezes it into the small intestine to break down fat droplets
Pancreas - produces pancreatic juice that contains digestive enzymes and bicarbonate
Small Intestine - absorbs nutrients from chyme
Large Intestine - absorbs water and dries out food, turning it into waste
Rectum - stores waste before it leaves the body
Anus - an opening where waste exits the body
Impaired muscular function in multiple sclerosis occurs due to frequent loss of nerve signals, one reason for loss of nerve impulses maybe:
A. loss of myelination in axons
B. death of neurons in brain
C. loss of cell bodies of neurons
D. none of the above
Which of the following is an essential amino acid?
Answer:
The 9 essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
Meiosis occurs only in the _____cells
Answer:
reproductive cells
Explanation:
Meiosis only occurs in reproductive cells
hope it helps!
Answer:
Meiosis occurs only in the reproductive cells.
hope it helps!
5. On vacation at a lake, Saira's mom sees an interesting-looking rock formation. Saira just learned
about rocks in geology class and tells her mom that the formation is made of gneiss, a type of
metamorphic rock. How did this metamorphic rock form?
Answer:it was heated and under pressure
Explanation:
Metamorphic rocks are formed from existing rocks, under high temperature and high pressure. This process is called metamorphism.
What is a metamorphic rock?Metamorphic rocks are those rocks that are formed from different kinds of rock like igneous, sedimentary, or gneiss rock under high pressure and intense temperature. They are rigid in nature.
In the formation of metamorphic rocks, firstly existing rock is broken down into small particles by physical, chemical, or biological agents. The process of breaking down rock is called weathering. Then erosion and transportation of these particles take place by the wind, water, or any biological agent.
The next step involves compaction after sedimentation. Thus, metamorphic rocks are formed from existing rocks.
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Which water conservation strategy is being used when a household uses eco-friendly cleaning products?
A:Reusing and recycling
B: limiting consumption
C: pollution prevention
D: eliminating losses
Need help ASAP
Answer:
Explanation:
Answer:
C: pollution prevention
Explanation:
Just took the test
Which of the following is a true statement about the sex of the newborn "male" child.
The father determined the sex which is XX
The mother determined the sex which is XX
The father determines the sex which is XY
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The mother determines the sex which is XY
None of the above are true
Answer:a
Explanation:
a beta 1,4 linkage is used to form lactose. sketch a hypothetical disaccharide where it instead links between two monosaccharide that form lactose via an alpha-1,6 formation
Answer:Oligosaccharides are built by the linkage of two or more monosaccharides by ... Two molecules of glucose are linked by an α-1,4-glycosidic bond to form the ... Sucrose, Lactose, and Maltose Are the Common Disaccharides ... The branches are formed by α-1,6-glycosidic bonds, present about once in 10 units (Figure 11.13).
Explanation: