19- B.
Calcium ions will enter through calcium channels
20-D.
Mitochondria is found both in plants and animals but not in bacteria.
21-C.
Cis face of Golgi complex lies towards nucleus and trans face lies towards plasma membrane.
23- A
Microtubules have microtubule organizing center.
The concentration of Ca^2+ is greater outside a cell relative to inside. Which of the following...
Which of the following binds ATP/ADP? a. microfilaments b. microtubules c. intermediate filaments d. microfilaments and microtubules e. microfilaments and intermediate filaments
Many drugs have the ability to disrupt the cytoskeletal structure of the cell. These drugs are useful in the study of microtubules and microfilaments. a. What are some of the drugs used to study microfilaments? b. What are some of the drugs used to study microtubules? c. What additional technique with applications similar to these drugs is often used to study the cytoskeleton? d. Cancer is a disease in which cells divide uncontrollably. Many of the drugs used in the...
QUESTION 5 are part of the cytoskeleton. They reinforce cell shape and anchor some cell organelles. a. Microfilaments 1 point b. Microtubules c. Intermediate Filaments QUESTION 6 Which of the following would NOT be found in a prokaryotic cell? Oa. Nucleus 1 points b. Ribosome c. Capsule Od. Cell Wall QUESTION 7 1 points Sav are found in plants. They are channels between cells that are next to each other, and allow movement of water and sap between the cells....
The liver is involved in detoxification of many poisons and drugs. Which of the following structures is primarily involved in this process and therefore abundant in liver cells? A) rough ER B) smooth ER C) Golgi apparatus D) nuclear envelope E) transport vesicles Which of the following produces and modifies polysaccharides that will be secreted? A) lysosome B) vacuole C) mitochondrion D) Golgi apparatus E) peroxisome Which organelle often takes up much of the volume of a plant cell? A)...
Question 78 Which of the following statements about the cytoskeleton is TRUE? All eukaryotic cells have actin, microtubules, and intermediate filaments in their cytoplasm The cytoskeleton provides a rigid and unchangeable structure important for the shape of the cell. The three cytoskeletal filaments perform distinct tasks in the cell and act completely independently of one another Actin filaments and microtubules have an inherent polarity, with a plus end that grows more quickly than the minus end С. D Question 79...
Question 1 of 8 2.0 Points Which of the following statements about the cytoskeleton is false? A. The cytoskeleton is made up of three types of protein filaments. B. The cytoskeleton controls the location of organelles in eukaryotic cells. C. Covalent bonds between protein monomers hold together cytoskeletal filaments. D. The cytoskeleton of a cell can change in response to the environment. Reset Selection Question 2 of 8 2.0 Points Which of the following statements about the function of the...
2a.
The mitotic spindle is composed of a network of which cytoskeletal
filaments?
2b. Some type of chemotherapeutic drugs, used to treat cancer,
disrupt microtubules and the mitotic spindle. Why are drugs that
disrupt the mitotic spindle effective cancer treatment?
2c. In humans, both meiosis and mitosis start with a cell that
has ____ duplicated chromosomes. Remember, cells duplicate their
DNA during S phase in the cell cycle; this happens prior to meiosis
or mitosis. Meiosis includes two rounds of...
please helps me with simply define:
PART A: Osmosis Define the following terms. 1 Solution: 2 Solute: 3 Solvent: 4 Diffusion: 5 Selectively permeable: 6 Osmosis: 7 Hypotonic: 8 Hypertonic: 9 Isotonic: 10 Plasmolysis: 11 Turgor pressure: PART B: Cell Structure Identify the functions of the following organelles. Plant Cells 1 Chloroplasts: 2 Central vacuole: 3 Cell wall: Animal Cells 1 Lysosomes: 2 Centrioles: Plant and Animal Cells 1 Nucleolus: 2 Rough endoplasmic reticulum: 3 Smooth endoplasmic reticulum: 4 Golgi...
1. Which of the following are principles of cell theory? A. All living things are composed of one or more cells. B. Cells are the smallest unit of living organisms. C. New cells come only from pre-existing cells by cell division. D. Cells are the smallest unit of living organisms and new cells form from pre-existing cells by cell division. E. All living organisms are composed of one or more cells, cells are the smallest unit of living organisms, and...
QUESTION 1 A gene that encodes a protein that stimulates progression of the cell cycle is known as a proto-oncogene. True False QUESTION 2 Cytokinesis occurs after which stage or phase of the cell cycle? a. G2 b. S c. G0 d. G1 e. M phase QUESTION 3 During cell-cycle checkpoints, protein kinases known as CDKs phosphorylate target proteins only when they associate with a cyclin. True False QUESTION 4 During mitosis, many of the spindle fibers attach to chromosomes...