DNA, which is a sequence of nucleotides, make up genes. Genes are DNA sequences that code of a functional protein and are controlled by a promoter region on the DNA. DNA, including genes within it, are supercoiled into chromosomes so they are able to fit in the cell. Otherwise, uncoiled DNA in a cell is much longer than the cell itself.
17. The SI unit for force is N.
18. When an Unbalanced force acts upon and object, the object will change speed and/or direction of motion.
19. Average speed is the speed averaged over a span of time. Instantaneous speed would be the speed at any given instance during that span of time.
20. Acceleration= (final velocity - initial velocity) / time
Final velocity= 0 m/s
Initial velocity= 25 m/s
Time = 40 sec.
So, acceleration (0 - 25) m/s / 40 sec.
Acceleration = -0.625 m/s^2
Long-term potentiation (LTP) is a process involving persistent strengthening of synapses that leads to a long-lasting increase in signal transmission between neurons.
long-term potentiation long lasting changes at neuronal levels that are involved in learning and memory increased responsiveness of a neuron due to synaptic changes.
LTP can be induced either by strong tetanic stimulation of a single pathway to a synapse, or cooperatively via the weaker stimulation of many. When one pathway into a synapse is stimulated weakly, it produces insufficient postsynaptic depolarization to induce LTP. Example of LTP is, if a mouse is placed in a pool of murky water, it will swim about until it finds a hidden platform to climb out on. With repetition, the mouse soon learns to locate the platform more quickly.
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I think the answer is flagella for movement. Because, prokaryotes don't have a nucleus, not all of them are unicellular, and I did not think that prokaryotes had organelles. But since is said "Select all that apply" I am assuming that the answer, or answers, are B and D. I hope this helps!
(No. of chromosome pairs) x 2 = (No. of chromosomes) ✅
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- Humans have 23 pairs of chromosomes, for a total of 46 chromosomes.
- The two types of chromosomes are:-
- - There are 22 pairs of autosomes in humans.
- - They are X and Y chromosomes. In the case of males, they have one X and one Y chromosome, while females possesses two X chromosomes.
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